Answers
The hybrid orbital of this molecule is B. sp³d
What do sp2 and sp3 hybridizations entail?Trigonal symmetry was used to generate a combination of s and p orbitals, which are kept at 1200. Ethylene (C2H4) sp3 hybridization is an example of sp2 hybridization. To create a novel hybrid orbital known as the sp3 sp3 orbital, one's' orbital and three 'p' orbitals of equal energy are mixed in this type: One of four new comparable orbitals that result from geometrically combining one s orbital and three p orbitals to create a normal tetrahedron's four corners.
Again, we refer to them as sp3 particles because they are made up of a single s orbital and three p orbitals. These degenerate hybrid orbitals are created to offset the s-p transition's energy upward.
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Related Questions
Glucose and fructose are simple sugars with the molecular formula C6H12O6. Sucrose (table
sugar) is a complex sugar with molecular formula C12H22O11 that consists of a glucose unit
covalently bound to a fructose unit (a water molecule is eliminated as a result of the reaction
between glucose and fructose to form sucrose).a. Calculate the energy released as heat when a typical table sugar cube of mass 1.5 g
is burned in air.
b. To what height could you climb on the energy a table sugar cube provides assuming
25 % of the energy is available for work?
c. The mass of a typical glucose tablet is 2.5 g. Calculate the energy released as heat
when a glucose tablet is burned in air.
d. To what height could you climb on the energy a tablet provides assuming 25% of
the energy is available for work?
Answers
The energy released as heat when a typical table sugar cube of mass 1.5 g is burned in air is 24.78 KJ energy.
What is energy?Energy is defined as the quantitative property that is transferred to a body or physical system and is visible in the performance of work as well as in the form of heat and light.
A. Table sugar is sucrose.
According to the data, its molecular formula is C12H22O11 and its molecular weight is 342 g when 1 mole of sucrose gives 5650 KJ/mole energy on combustion. 1.5 g equals 0.00438 moles of energy is 24.78 KJ.
B. According to Newton's laws, 25% of the above released energy is used for work, which equals 6.19 KJ.
6.19 KJ = 6190 joules
U= mgh
U= ENERGY = WORK
m = mass of the object here mass of a normal adult
g = gravity =9.8 m/s2
h = height in meters
The height that can be climbed based on the above data is = 12.63m.
C. When 1 mole of glucose gives 2805 KJ/mole energy on combustion, its molecular formula is C6H12O6
Molecular weight is 180 g.
2.5 g equates to 0.0138 moles producing 38.95 kJ of energy.
D. 25% of the previously released energy is used for work, which means
According to Newton's laws, 9.73kJ is used.
9.73 KJ = 9730 joules
U= mgh
U= ENERGY = WORK
m = mass of the object here mass of a normal adult
g = gravity =9.8 m/s2
h = height in meters
Height = 19.85m based on the above data
Thus, the energy released as heat when a typical table sugar cube of mass 1.5 g is burned in air is 24.78 KJ energy.
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It's the northern summer solstice. Explain what would happen to the length of the day if you took a trip from Mexico City north to Anchorage, Alaska, and why.
Answers
Prior to and following the summer solstice, the sun angle is high and there are the most daylight minutes. The amount of daylight gets less as the sun starts to descend in the sky.
What is Northern Summer Solstice ?
The North Pole is tilted farther toward the sun on the June solstice than any other day of the year. As a result, the Northern Hemisphere will have its longest day and shortest night on June 21.
According to the Gregorian calendar, the June solstice is the solstice on Earth and takes place every year between June 20 and June 22. The June solstice is the summer solstice in the Northern Hemisphere and the winter solstice in the Southern Hemisphere. The northern solstice is another name for it.
Midsummer, also known as the summer solstice, is the time of year when a planet's rotational axis, or geographic pole, in either its northern or southern hemisphere, is most inclined toward the star it orbits. The Earth's maximum axial tilt toward the Sun is 23.44° on the summer solstice.
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What is the mass in grams of carbon dioxide that would be required to react with 84.6 g of LiOH in the following chemical reaction? 2 LiOH(s) + CO₂(g) → Li₂CO₃(s) + H₂O(l)
Answers
The mass of CO₂ that would be required to react with 84.6g of LiOH in the following reaction would be 77.5g
According to the given reaction,
CO₂(g) + 2LiOH(g) --- Li₂CO₃ + H₂O(g)
? (84.6g)
As we know,
(mole of CO₂/coefficient) = (mole of LiOH/coefficient)
mole of CO₂/1 = (84.6/Molecular weight÷2)
(mass of CO₂/molecular weight of CO₂) = (84.6/molecular weight of LiOH÷2)
mass of CO₂/44 = 84.6/48
mass of CO₂ = 77.5g
Therefore, mass of CO₂ = 77.5g
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What is the percent abundance of the second and final isotope of lithium if first has a mass of
7.016004
and an abundance of
92.41%
Answers
The percent abundance of the second isotope of lithium that has a mass of 7.016004 and abundance of 92.41% is 6.465.
What is percent abundance?Isotopes are any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.
Thus, isotopes have the same atomic number but a different mass number.
The relative abundance of the isotope of an element is the percentage of atoms with a specific atomic mass found in a naturally occurring sample of an element.
According to this question, an isotope of lithium has a relative abundance of 92.41%. This means that the percentage abundance is calculated as follows:
92.41% × 7.016004 = 6.465amu
Therefore, 6.465 is the percentage abundance of the lithium isotope.
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Explain this statement
All group 1 metals react with cold water to form hydrogen and an alkali. The oxides of these metals are basic and their chlorides are soluble in water. The valency of each group 1 is one. Therefore the formula of its nitrate is MNO3
Answers
The formula should be MNO₃ because the valency of the metal and the nitrate ion both is 1 and thus the formula will be MN0₃.
Cold water causes a strong reaction between all alkali metals. Each time a reaction occurs, hydrogen gas is released along with the metal hydroxide. As you move down the group, the reaction gets faster and more violent. This demonstrates that as you move below Group 1, the alkali metals' reactivity rises.
Chlorides are created when any of the group 1 metals interact with chlorine. At room temperature, the chlorides are all white solids that dissolve to create a neutral solution. As you move down the group, the reactions get more forceful.
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Calculate either [H3O+] or [OH−] for each of the solutions at 25 °C. Solution A: [OH−]=3.29×10−7 M; [H3O+]= _________M Solution B: [H3O+]=9.63×10−9 M; [OH−]= ____________M Solution C: [H3O+]=6.49×10−4 M; [OH−]= __________M Which of these solutions are basic at 25 °C? Solution A: [OH−]=3.29×10−7 M Solution C: [H3O+]=6.49×10−4 M Solution B: [H3O+]=9.63×10−9 M
Answers
Solution A and B are BASIC
[tex]\begin{gathered} solution\text{ A: }[H_3O^+]=3.039\times10^{-8}M \\ solution\text{ B: }[OH^-]=1.038\times10^{-6}M \\ solution\text{ C: }[OH^-]=1.54\times10^{-11}M \end{gathered}[/tex]Explanations:Using the formula below to determine the concentration of the hydroxonium ion;
[tex]\begin{gathered} [H_3O^+][OH^-]=1\times10^{-14} \\ [H_3O^+]=\frac{1\times10^{-14}}{3.29\times10^{-7}} \\ [H_3O^+]=\frac{1}{3.29}\times10^{-14-(-7)} \\ [H_3O^+]=0.3039\times10^{^{-7}} \\ [H_3O^+]=3.039\times10^{-8}M \end{gathered}[/tex]Determine the pH
[tex]\begin{gathered} pH=-log[H_3O] \\ pH=-log(3.039\times10^{-8}) \\ pH=-(-7.5) \\ pH=7.5 \end{gathered}[/tex]This shows that the solution A is BASIC since the pH is greater than 7
For solution B
[tex]\begin{gathered} [OH^-]=\frac{1\times10^{-14}}{[H_3O^+]} \\ [OH^-]=\frac{1\times10^{-14}}{9.63\times10^{-9}} \\ [OH^-]=0.1038\times10^{-5}M \\ [OH^-]=1.038\times10^{-6}M \end{gathered}[/tex]Determine the pH
[tex]\begin{gathered} pH=-log[H_3O^+] \\ pH=-log(9.63\times10^{-9}) \\ pH=-(-8.02) \\ pH=8.02 \end{gathered}[/tex]This shows that the solution B is BASIC since the pH is greater than 7
For the solution C
[tex]\begin{gathered} [OH^-]=\frac{1\times10^{-14}}{[H_3O^+]} \\ [OH^-]=\frac{1\times10^{-14}}{6.49\times10^{-4}} \\ [OH^-]=0.1540\times10^{-10}M \\ [OH^-]=1.54\times10^{-11}M \end{gathered}[/tex]Determine the pH of the solution C
[tex]\begin{gathered} pH=-log[H_3O^+] \\ pH=-log(6.49\times10^{-4}) \\ pH=-(-3.19) \\ pH=3.19 \end{gathered}[/tex]Since the pH of the soution C is less than 7, hence the solution C is ACIDIC
what is the maximum number of electrons that can occupy the 3rd orbitals
Answers
Using the Linus Pauling electronic configuration rules, we can see that the total number of possible electrons in the orbital 3d is:
1s2 2s2 2p6 3s2 3p6 4s2 3d10, therefore the maximum amount if 10 electrons according to the rules of electronic configuration
Rosa is going to pour the liquid substance from the container shown into a large bucket.
Which observation will Rosa most likely make?
A. The mass of the liquid substance will increase.
B. The liquid substance will immediately turn into a gas.
C. The liquid substance will begin to change colors.
D. The liquid substance will take the shape of its container.
Answers
Anything around us that can be physically seen and touched are matter. Matter can be solid, liquid or gas. To solve this question we need to know the all properties of liquid so option D is correct option.
What is matter?Matter is a substance that has some mass and can occupy some volume. Matter that is given is liquid which has property that it occupies the volume of container in which it is kept.
There is a law called conservation of mass, mass can never be destroyed. To change and color of liquid we need to heat up the liquid and that we are not doing over here.
Thus option D is correct option.
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how many moles of electrons are needed to produce 53.5 mol of zinc
Answers
The 107 moles of electrons are needed to produce 53.5 mol of solid zinc.
What is an electron?The electron is a subatomic particle that contains a negative elementary charge. The electron's mass is approximate 1/1836th that of the proton and has an intrinsic angular momentum of a half-integer value. No two electrons can have the same quantum state.
An electron is bounded to the nucleus of an atom by the attractive Coulomb force. If the number of electrons differs from the nucleus's electrical charge is known as an ion. Each orbital has a unique set of quantum numbers that exist around the nucleus of an atom.
Solid zinc can be formed by chemical reactions:
Zn²⁺ + 2e⁻ → Zn (s)
One mole of zinc is produced when two moles of electrons are accepted by one mole of zinc ions
One mole of solid zinc is produced from electrons = 2 moles
The 53.5 mol of zinc will be produced from electrons = 2 × 53.5 = 107 mol
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When lithium chloride, LiCl, dissolves in water, which of the following is formed in aqueous solution?
Answers
When lithium chloride, LiCl, dissolves in water, it forms lithium ions, [tex]Li^{+}[/tex], in aqueous solution with water, [tex]H_{2}O[/tex].
Water has a higher solubility for lithium chloride than non-polar solvents. The LiCl crystal is destroyed as a result of the interactions between the ions and the polar water molecules, and the hydrogen bonding structure of the H2O molecules in the liquid water is also disrupted, allowing the ions to be incorporated among the water molecules.
The ions in the crystal lattice would not be attracted to non-polar molecules very strongly. LiCl would continue to be in the crystal structure while the non-polar molecules would continue to be attracted to one another by the weak London force.
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A sample of gas occupies 6.00 liters at a temperature of 200. K.
Answers
The question requires us to calculate the volume of a gas when its pressure is kept constant and its temperature is raised from 200 to 600 K.
The following information was provided by the question:
Initial volume of gas = V(1) = 6.00 L
Initial temperature of gas = T(1) = 200 K
Final temperature of gas = T(2) = 600 K
According to Charle's Law, the volume of a given confined gas under constant pressure increases as the temperature increases and decreases as the temperature decreases. In other words, the Charle's Law states that the volume of a given amount of gas is directly proportional to its temperature on the kelvin scale when the pressure is held constant
Mathematically, we can write this as:
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]where V(1) and T(1) refers to the volume and temperature of the gas at the initial state, and V(2) and T(2) refers to volume and temperature at the final state.
We can rearrange the equation above in order to calculate the final volume of a gas:
[tex]V_2=\frac{V_1\times T_2_{}}{T_1}[/tex]Now, we can apply the values given by the question to this equation and calculate the final volume of the gas:
[tex]V_2=\frac{(6.00L)\times(600K)}{(200K)}=18.0L[/tex]Therefore, the final volume of the gas when the temperature is increased under constant pressure is 18.0 L and the best option to answer this question is letter D.
The total pressure of a mixture of CO2 and O2 is 1.03 atm. If the pressure of the CO2 is 560. torr, what's the pressure of O2 in mmHg?
Answers
The pressure (in mmHg) of O₂, given that CO₂ has a pressure of 560 torr is 222.8 mmHg
We'll begin by converting 1.03 atm to torr. This can be obtained as follow:
1 atm = 760 torr
Therefore,
1.03 atm = (1.03 atm × 760 torr) / 1 atm
1.03 atm = 782.8 torr
Next, we shall determine the pressure of O₂. This can e obtained as follow:
Total pressure = 782.8 torr Pressure of CO₂ = 560 torrpressure of O₂ =?Total pressure = pressure of CO₂ + pressure of O₂
782.8 = 560 + pressure of O₂
Collect like terms
Pressure of O₂ = 782.8 - 560
Pressure of O₂ = 222.8 torr
Finally, we shall convert 222.8 torr to mmHg. This is illustrated below
Recall
760 torr = 760 mmHg
Therefore,
222.8 torr = 222.8 mmHg
Thus, we can conclude that the pressure of O₂ is 222.8 mmHg
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"What is the % TDS Coffee if the refractive index, np, is 1.3384 and the
equation that relates refractive index to % TDS Coffee is
np = 0.00175 (% TDS Coffee) + 1.3342"
Answers
The relation between %TDS coffee and refractive index is given by the formula:
np = 0.00175 (% TDS Coffee) + 1.3342
In the given case
np = 1.3384
So, substituting the value of np in the equation above, we get:
1.3384 = 0.00174 (%TDS Coffee) + 1.3342
⇒ 1.3384 - 1.3342 = 0.00174 (%TDS Coffee)
⇒ 0.0042 = 0.00174 (%TDS Coffee)
⇒ (%TDS Coffee) = 0.0042/0.00174
⇒ %TDS Coffee = 2.4137
Hence the value of %TDS Coffee is 2.4137
What is Refractive Index?How much light is twisted or refracted when it enters a material depends on the material's refractive index. The intensity of the reflected light (determined by Fresnel's equations), the critical angle for total internal reflection, and Brewster's angle are all influenced by the refractive indices.The refractive index can be thought of as the parameter that reduces the speed and wavelength of the radiation relative to their vacuum values: the speed of light in a medium is v = c/n and the wavelength in that medium is = 0/n, where 0 is the wavelength of that light in vacuum.This assumes that the refractive index of vacuum is 1, and it also assumes that the refractive index has no impact on the wave's frequency (f = v/).To learn more about Refractive Index, refer to:
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What is the pH of a solution that is 0.49 M in sodium borate and 0.39 M in boric acid?
Report your answer to 2 decimal places.
Answers
The pH of a solution that is 0.49 M in sodium borate and 0.39 M in boric acid is 9.359.
What is the pH of a solution?Generally, Sodium borate and boric acid mixture in a buffer solution follows the below way:
Salt = Sodium borate =0.37
[tex][tex]\phi k_a[/tex]=5.4 *10^{-10}$[tex]-\log k_a\\=-\log 5.4 *10^{-10}$[/tex]p k a=9.26[tex]&\quad \\P H = P K \\a+\log \left|\frac{\text { Salt }}{\text { acid }}\right| \\[/tex]\\because [tex]P H=9.26+\log \left|\frac{0.49}{0.39}\right| \\\\=9.359[/tex]
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Complete and balance the reaction for the reduction of silver ions by nitrite under basic conditions.
Ag+(aq)+NO−2(aq)⟶Ag(s)+NO−3(aq)
Answers
To see the total number of atoms of an element we need to multiply stoichiometry of that element to the number that is written on the foot of that element. Thus the balanced equation is
NaNO₂(aq)+AgNO₃(s)→NaNO₃(aq)+AgNO₂(s)
What is Balanced equation?Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side
The unbalanced equation is
NaNO₂(aq)+AgNO₃(s)→NaNO₃(aq)+AgNO₂(s)
Sodium atoms on reactant and product side is 1
Silver atoms on reactant and product side is 1
Nitrogen atoms on reactant side and product side is 2
Oxygen atom on reactant side and product side is 5
Thus the balanced reaction is
NaNO₂(aq)+AgNO₃(s)→NaNO₃(aq)+AgNO₂(s)
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How do I match this?
Answers
Answer:
Below
Explanation:
Br and I: Similar chemical properties
Cl and Se: Nonmetals
Dy and Es: Inner transition metals
Ca-39 and Ca-38: Isotopes
Bronze and pewter: Alloys
Al2+ and S2-: Ions
Solutions are found in many different places on earth, but one of the most common in our lives is soft drinks. Explain how a coke is a solution, how it is made, and how different factors like temperature and pressure can affect the character of asoft drink.
Answers
EXPLANATION:
Firstly, we need to define a solution
The solution is defined as a homogenous mixture of two or more substances in relative amounts that can be varied continuously.
Coke is an aqueous homogenous mixture of carbon dioxide, sugar, concentrate, etc The ingredient used in the production of coke are mixed in the right proportion and this make coke a homogenous solution
Temperature can affect the character of a coke. Carbonated soft drink tends to lose their fizz at high temperature. This is because as the temperature increases, the loss of carbon dioxide in the liquid will also increase.
Also, at high temperatures, the solubility of gases decreasese.
Sperm penetrate the oocyte using acrosomal enzymes. It must penetrate both the __________ (cellular layer) and the underlying ____________ (glycoprotein layer).
Answers
Answer:
I believe the answers are "granulosa cells" and "zona pellucida"
In sexual reproduction in humans, the sperm penetrate the oocyte using acrosomal enzymes. It must penetrate both the granulosa cells and zona pellucida.
What is sexual reproduction?
Sexual reproduction is a type of reproduction where the offsprings are produced by the combination of genetic material of two individuals which are of different sexes.
It is the dominant form of reproduction in living beings. Here, the genetic information is stored in chromosomes which are present in the nucleus of reproductive cells which are called gametes.Gametes fuse to form a diploid zygote.Zygote then develops into a new living being.
Because of sexual reproduction variations in living beings are possible because of reshuffling of genetic material. Here, haploid gametes form diploid zygotes except in case of bacteria.
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Carbohydrates serve as a vital source of chemical energy to the human body. Carbohydrates are broken down into smaller units of glucose, among other sugars, providing energy to various muscles and organs, including the brain. On average, for every 10.0 g of carbohydrates consumed, the body will store 170 kJ of energy.
Answers
The kilocalories of the 170KJ energy value = 40.6 kcal
What are carbohydrates?Carbohydrate is defined as the major class of nutrients in food and food products that are organic macromolecule which are capable of giving body energy when broken down to its smallest unit called glucose.
The functions of carbohydrates in the body include the following:
They provide energy to the body.They spare the use of proteins in the body for energy.They assist in lipid metabolism.For every 10 g of carbohydrates that is being consumed, 170 kilojoules of energy is obtained.
To convert 170 kilojoules to kilocalories;
1 kilocalorie = 4.184 kilojoules
X kcal = 170 kJ
make X kcal the subject of formula,
X kcal = 170/4.184
X kcal = 40.6 kilo calories.
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What is the pH of a solution prepared by adding 20.7 mL of 0.10 M sodium hydroxide to 60.5 mL of 0.21 M acetic acid solution?
Report your answer to 2 decimal places.
Answers
The pH of the solution can be obtained as 13.13.
What is the pH of the solution?The pH is the negative logarithm of thee concentration of the hydrogen ions that is present in the solution.
The Number of moles of sodium hydroxide = 20.7/1000 L * 0.10 M
= 2.07 * 10^-3 moles
Number of moles of acetic acid = 60.5/1000 * 0.21 M
= 1.27 * 10^-2 moles
Since the reaction is 1:1. the sodium hydroxide is in excess.
Number of moles of excess hydroxide = 1.27 * 10^-2 moles - 2.07 * 10^-3 moles = 0.011 moles
Total volume = 20.7 mL + 60.5 mL = 81.2 mL or 0.0812 L
Concentration of excess hydroxide ions = 0.011 moles/0.0812 L
= 0.135 M
pOH = -log(0.135 M)
= 0.87
pH = 14 - 0.87
= 13.13
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What is the pH of a 0.49 M solution of hydrocyanic acid?
Report your answer to 2 decimal places.
Answers
The pH of a 0.49 M solution of hydrocyanic acid is 0.31.
How to calculate pH?pH is a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.
The pH of a solution can be calculated using the following equation or expression:
pH = - log {H⁺}
According to this question, a 0.49 M solution of hydrocyanic acid. The pH can be calculated as follows:
pH = - log {0.49}
pH = 0.31
Therefore, 0.31 is the pH of the solution.
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Photosystem II is responsible for the production of _______ from the splitting of water.Question 22 options: oxygen electrons carbon dioxide G3P
Answers
The question requires us to specify the product obtained when the Photosystem II splits water.
First, we need to remember that splitting water means "breaking" water into its components.
In that sense, water splitting is the chemical reaction where water is broken down into oxygen and hydrogen:
[tex]2H_2O\rightarrow2H_2+O_2[/tex]With that concept in mind, we can say that the photosystem II will produce oxygen (option A).
Another important thing to remember about this system is that it captures photons (the energy from the light) and uses this energy to extract electrons from water.
At noon on a clear day, sunlight reaches the earth's surface at Madison, Wisconsin, with an average intensity of approximately 5.00 kJ·s−1·m−2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 7.60 cm2 area per second?
Answers
There are 2.08 x 10¹⁸ photons/sec.
Wave energy:
E = nhc/λ
3000 = (n x 6.63 x 10⁻³⁴ x 3 x 10⁸)/(510 x 10⁻⁹)
n = 7.69 x 10²¹ photons/sec/m²
2.70 cm² = 2.70 /10,000 m²
= 2.7 x 10⁻⁴
photons/sec = 7.69 x 10²¹ x 2.7 x 10⁻⁴
= 2.08 x 10¹⁸ photons/sec.
Hitting a square meter solar panel at right angles requires about 30,000 photons per second producing 1 watt of energy at 100% efficiency. The numbers obtained without assuming constant spectral power distribution and photon energy will be dealt with in a later post, but for now, we assume that a daylight standard D bulb at 5300 K will work around 11,000 Suffice it to say. Chemical reactions in the body not only release energy and produce heat, but they also release small amounts of photons, the elementary particles of light.
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Please HELP!!!?! Describe competitive and noncompetitive in inhibitors describe how mutations can lead to resistance with non-competitive inhibitors
Answers
Competitive inhibitors - Binds to the enzyme in place of substrate by competing against the substrate
Non-competitive inhibitors - Binds to other position than the active site and blocks the activation of the enzyme without competing against the substrate
The mutations could change the shape of the binding site of non-competitive inhibitor thus preventing the binding.
Enzymes are proteins that could be activated if a substrate attaches itself to the receptor of the enzyme like a lock and key. The shape of the substrate should fit the receptor in the enzyme to activate it.
Inhibitors are structures similar to the substrate. It prevents the activation of the enzyme.
Competitive inhibitors are structures that binds to the enzyme in place of substrate i.e., it competes with the substrate to attach itself to the enzyme.
Non-competitive inhibitors are structures that does not compete with the substrate. In an enzyme, there may be more than one binding site. The non-competitive inhibitor would attach to other position and blocks the activation of the enzyme.
Mutations can change the structure of the molecule and thus the function. The mutations could change the shape of the binding site of non-competitive inhibitor thus preventing the binding. This would result in resistance of the enzyme with non-competitive inhibitor.
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5) if a doctor prescribed 1.75 x 10^21 molecules of ibuprofen, how many regular strength pills would this be?
Answers
Answer:
[tex]3\text{ regular strength pills}[/tex]Explanation:
Here, we want to get the number of regular strength pills of ibuprofen
To get this,we firstly need to get the number of moles
We can get this by dividing this value by the number of molecules in 1 mole which is:
[tex]6.02\text{ }\times10^{23}[/tex]Mathematically, we have this as:
[tex]\frac{1.75\times10^{21}}{6.02\times10^{23}}\text{ = 0.00291}[/tex]From earlier calcuations, 1 pill of regular strength ibuprofen contains 0.000963 moles
The number of pills that will contain overall 0.00291 moles will be:
[tex]\frac{0.00291}{0.000963}\text{ = 3 pills}[/tex]An oil tanker holds 3.24 • 10^7 gallons of crude oil. The mass of the oil is 2.13 • 10^8 pounds. What is the density of the oil in kilograms per liter?
Answers
Answer
The density of the oil in kilograms per liter is 0.78775
Explanation
Note: 1 gallon = 3.78541 liters
1 pound = 0.453592 kilogram
Given:
The gallons (volume) of crude oil = 3.24 x 10⁷ gallons
The mass of the crude oil = 2.13 x 10⁸ pounds
Conversion:
The volume in liters of 3.24 x 10⁷ gallons of crude oil will be
[tex]\begin{gathered} =3.78541\times3.24\times10^7 \\ =1.22647\times10^8\text{ liters} \end{gathered}[/tex]Also, the mass in kilograms of 2.13 x 10⁸ pounds of crude oil will be
[tex]\begin{gathered} =0.453592\times2.13\times10^8 \\ =9.6615\times10^7\text{ kilograms} \end{gathered}[/tex]Now, we shall use the formula below to calculate the density
[tex]\begin{gathered} \text{Density = }\frac{Mass\text{ in kilograms}}{\text{Volume in liter}} \\ \text{Mass in kilograms = 9.6615 }\times10^7 \\ Volume\text{ in liters =}1.22647\times10^8 \\ \therefore Density\text{ in kilograms per liter = }\frac{\text{9.6615 }\times10^7}{1.22647\times10^8}=0.78775^{} \end{gathered}[/tex]Which of the following solutions has the highest boiling point?
Which of the following solutions has the lowest boiling point?
Answers
Boiling point of Alcl3 would be highest .
As, i of Na2S= 3
2) i of NaNO3= 2
3) i of Alcl3= 4
4) i of Sucrose= 1 (As it doesn't show any kind of dissociation)
5) i of Mg(clo4)2= 3
What is boiling point elevation?Although we're assuming water as the solvent, boiling point elevation also depends on the solute concentration and the number of particles the solute breaks down into. The total number of particles in solution affects aggregative qualities like boiling point elevation. Here, water is the solvent. As a result, the boiling point of all solutions will be elevated above the boiling point of water.
Boiling point van't hoff factor.
What is van't hoff factor ?The Van't Hoff factor is the ratio of a substance's mass concentration to the concentration of the particles it dissolves into. How much a substance associates or dissociates in a solution is determined by the Van't Hoff factor.
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explain state function and exact differential?
Answers
Answer:
State Function: A system will be said to have a state function when its properties are independent of the path followed to carry out the state and it is fixated on a particular state.
Examples of state function are Pressure, Temperature, Mass, Volume & all the thermodynamics quantity (H, G, A, U, S).
A quantity which depends on the path followed is known as a path function. In thermodynamics, there are only two path functions: work and heat.
Exact differential: The differential of a state function for an infinitesimally small change in its property is called an exact differential.
Mathematically say phi is a function of x and y,
[tex] \phi \: = f(x, y)[/tex]
The overall change in phi i.e. dΦ will be,
[tex]d \phi \: = ( \frac{∂ \phi}{∂x})_ydx + ( \frac{∂ \phi}{∂y})_xdy[/tex]
let,
[tex]( \frac{ ∂\phi}{∂x})_y = m,( \frac{∂ \phi}{∂y})_x = n[/tex]
if Φ is a state function of x and y then,
[tex]( \frac{ ∂m}{∂y})_x =( \frac{ ∂n}{∂x})_y[/tex]
Cross reciprocality theorem.
substituting the value of m & n,
[tex][\frac{ ∂}{∂y}( \frac{ ∂\phi}{∂x})_y]_x =[ \frac{ ∂}{∂x}( \frac{ ∂\phi}{∂y})_x]_y[/tex]
Simplifying,
[tex] \frac{ {∂}^{2} \phi }{∂y \cdot ∂x} = \frac{ {∂}^{2} \phi }{∂x \cdot ∂y}[/tex]
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What is the IUPAC name for the compound shown?
Answers
The IUPAC name of the compound given in the question is 2,2,3-trimethylpentane
How do I name organic compound?The naming of organic compounds has been made easier, owning to the the rules of the international union of pure and applied chemistry (IUPAC).
The IUPAC naming of organic compounds can be obtained by following these steps:
Locate the longest continuous carbon chain.Identify the substituent groups attached to the compound.Give the substituents groups the lowest count by identifying their location.Combine the above to get the name of the compound.With the above information in mind, we can name the compound as follow:
The longest continuous carbon chain is 5 i.e pentaneThe substituent group attached is methylThere are three methyl group of which two are located at carbon 2, and one at carbon 3Thus, the IUPAC name of the compound is:
2,2,3-trimethylpentane
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Question 1
The hybridization of the central nitrogen atom in the molecule N 20 is
Answers
Answer:
NO2 has sp2 hybridization in the traditional sense.
Explanation:
Single electron orbitals are often pure, unhybridized p-orbitals, such those seen in the methyl free radical.
However, when the central atom is joined to strongly electronegative atoms or groups, the single electron orbital is said to be hybridized. It happens as a result of the core atom's decreasing electron density, which draws in odd electron orbital density and reduces the size of the odd electron orbital. As a result, the odd-electron orbital takes on some "s" character and becomes hybridized.
ClO2, ClO3, and CF3 are sp3 hybridized for the same reason.