Answer:
C
Explanation:
Which of the following will result in a linear plot when the natural logarithm of the species concentration (Al) is plotted against time? A. A reaction rate that is dependent on concentration of only one of the reactants. B. A reaction rate that is dependent on concentration of all the reactants C. A reaction rate that is Independent of concentration of any of the reactants D. All of the above.
The result in a linear plot when the natural logarithm of the species concentration (Al) is plotted against time will be (A) A reaction rate is dependent on the concentration of only one reactant.
The linear plot between ln([A]) and time will follow the First-order reaction kinetics, that is as follows;
ln[A] = -kt + ln[A]0
In the above-mentioned equation;
k = rate constant
[A]0 = initial concentration of the reactant.
By the equation, it is confirmed that it is a linear plot between ln([A]) and t.
Therefore, A reaction rate is dependent on the concentration of only one reactant.
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What is the percentage yield of a reaction if the actual yield is 15 g and the theoretical yield is 22 g?
Considering the definition of percent yield, the percentage yield of the reaction is 68.18%.
Percent yieldTo determine the efficiency of a reaction, the percent yield is used, which describes the ratio of the actual yield to the theoretical yield.
The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:
percent yield= (actual yield÷ theoretical yield)× 100%
where:
In a chemical reaction it can happen that the reactants do not react completely or that their interaction generates other products. These factors decrease the yield of the reaction, leading to the actual yield.The theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product.Percent yield in this caseIn this case, you know:
actual yield= 15 gtheoretical yield= 22 gReplacing in the definition of percent yield:
percent yield= (15 g÷ 22 g)× 100%
Solving:
percent yield= 68.18%
Finally, the percentage yield is 68.18%.
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3 rules that ionic compounds must follow
Answer:
Explanation:
Name the metal by its elemental name.
Name the nonmetal by its elemental name and an -ide ending.
Name polyatomic ions by their names.
The answer to this question= 3 rules that ionic compounds must follow are-
While naming an ionic compound, the cation should be named first and then only the anion should be named.For the species having multiple charges, for example, FeO and Fe2O3, naming these ionic compounds become difficult so in these cases we specify the charges using roman numerals, and this method is called the Stock system.In the formation of ionic compounds, one must take into notice that the positive and negative charges should be well balanced. Ionic compounds are further defined to have very high melting and boiling pointIonic compounds must be soluble in water.To learn more about Ionic Compounds,
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During the manufacturing process to make light bulbs, an incandescent
light bulb is filled with Ar and a small amount of N₂ at about 0.80 atm of
pressure in a 20.°C facility. If the temperature inside the light bulb reaches
380°C when it is operational, what would the new pressure be inside the
light bulb?
The new pressure is 1.78 atm.
What Are The Gas Laws
The gas laws were developed in the early 17th century to help scientists determine volumes, amounts, pressures, and temperatures when it comes to gas-related issues. Three fundamental laws—Charles' Law, Boyle's Law, and Avogadro's Law—make up the gas laws (all of which will later combine into the General Gas Equation and Ideal Gas Law). The relationship between pressure, temperature, volume, and amount of gas is found using the three basic gas laws.
At initial, the pressure (Pi) is 0.80 atm.
At initial, the temperature (Ti) is (20+273)K that, is 293 K
The final temperature (T2) is (380+273)K that, is 653 K
Then, at constant volume:
P1/T1 = P1/T2
0.80/293 = P2/653
P2= 1.78
Therefore, the new pressure (P2) is 1.78 atm
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Draw the organic products formed when CH3CH2C≡C−Na+ reacts with BrCH2CH2CH2CH2OH
Strong nucleophile Sodiumbutyne reacts with 4-bromobutanol to produce a nucleophilic substitution reaction.
What is nucleophilic substitution reaction?Nucleophilic substitution reaction is defined as a series of reactions where a positively charged electrophile is attacked by an electron-rich nucleophile to remove a leaving group.
This causes the mass of the product to increase with the addition of more carbon atoms. The strong base sodiumbutyne reacts with the alcohol's hydrogen to produce an acid-base reaction. Consequently, lower mass product alkyne is formed.
Thus, strong nucleophile Sodiumbutyne reacts with 4-bromobutanol to produce a nucleophilic substitution reaction.
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which of the following is not the correct chemical formula for the compound named? remember: transition elements have variable charges.
The name of the ionic compound is Copper(II) fluoride and its chemical formula is CuF₂.
Ionic compound
The compound which is formed when electron gets transferred from one atom to another atom is known as ionic compound. Ionic compounds are formed usually when a metal reacts with a non-metal.
The nomenclature for writing the formula of an ionic compound is given as:
1. The name of the positive ion is written first.
2. The name of the negative ion is written next and a suffix is added at the end of the negative ion. The suffix written at the end is '-ide'.
3. In case of transition metals, the oxidation states of the transition metals are written in roman numerals in bracket in-front of the positive ions.
CuF₂ is an ionic compound because the element copper is a metal and the element fluorine is a non-metal. The bond that is formed between a metal and a non-metal is always ionic in nature.
The oxidation state of copper in CuF₂ is, (+2)
Thus, the name of ionic compound is, Copper(II) fluoride and its chemical formula is CuF₂.
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Which pair of elements would most likely combine to form a salt?
Li and Ar
Ca and Al
Mg and Br
N and S
The pair of elements most likely to combine in order to form a salt would be Mg and Br. Option 3.
What are salts?Salts are chemical compounds formed by the combination of positive ions, usually from bases, and negative ions, usually from acids. In other words, salt cannot be formed from two positive or two negative ions.
Going by this definition:
Li and Ar are both positive ions and thus, cannot form a salt.Ca and Al are both positive ions and thus, cannot form a salt.N and S are both negative ions and cannot form a salt.On the other hand, Mg forms a positive ion, [tex]Mg^{2+[/tex], and Br forms a negative ion, [tex]Br^-[/tex]. Thus both can form a salt, unlike other options.
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Which of the following correctly identify the main types of oxidizing agents used in organic oxidation reactions?
A) Alkali metals dissolved in ammonia
B) Reagents containing H2 on a metal catalyst
C) Reagents containing a carbon-halogen bond
D) Reagents containing an oxygen-oxygen bond
E) Reagents containing an oxygen-metal bond
The following correctly identify the main types of oxidizing agents used in organic oxidation reactions :
D) Reagents containing an oxygen-oxygen bond
E) Reagents containing an oxygen-metal bond
The oxidation reaction are the reaction is the removal of the hydrogen is called as the oxidation reaction . the increases in the oxidation number or we can say that the loss of the electron are called as the oxidation reaction. The removal of the oxygen is called as the reduction reaction . the decreases in the oxidation number or the gain of the electron is the reduction reaction.
Thus, the Reagents containing an oxygen-oxygen bond and Reagents containing an oxygen-metal bond are main types of the oxidizing agents used in oxidation reaction.
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Based on your pH data, calculate the concentration of H3O+ and the degree of ionization of acetic acid in solution 1-3. Solution 1 pH=2.73 Solution 2 pH=2.93 Solution 3 pH=4.79 and hpw do these results compare with expected behavior.
10-6mol dm-3 of H3O + ions are present in pure water.
What occurs when acid is added to water in terms of the concentrations of H3O+ and OH?Acid reacts with water to release H+ ions, which combine with water to create H3O ions since they cannot live alone. This decreases the concentration of ions (H3O/OH-) per unit volume.
What is the pH of a solution with a concentration of hydronium ions H3O +) of 1.0x10 8 m?pH=−log(1×10−8M)=8. Consequently, the solution's pH value is 8.
How does the pH of a solution change depending on the amount of H3O+ ions present?The pH falls in solution when [H3O+] concentration rises. As a result, the solution's acidity rises.
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Evidence II
How did the suspects make the silver coins look gold?
The zinc coating makes the coin appear to have a new silver covering. Brass is created when a coin is heated in a Bunsen flame due to the migration of zinc into the copper's surface layer. This gives the coin a gold appearance.
The following describes how zinc and sodium hydroxide react to generate sodium zincate:
Na2[Zn(OH)4](aq) + H2 = Zn(s) + 2NaOH(aq) + 2H2O(l) (g)
A wire or direct contact between the copper and the zinc, as in this case, is required for the plating reaction to occur in an electrochemical cell.
The following electrode reactions:
Zn(s) Zn2+(aq) + 2e- at the zinc electrode, then the zinc ions complex as [Zn(OH)4].
2–(aq)
Zn(s) + 4OH- at the copper electrode: [Zn(OH)4]2-(aq) + 2e- (aq)
The zinc coating gives the coin the appearance of having a silver coating.
To determine the amount of zinc added, weigh the coins both before and after plating.
Brass is created when the coin is heated under a Bunsen flame because the zinc migrates into
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The hybridization of orbitals on the central atom in a molecule is sp2. The electron-domain geometry about this central atom is __________. A. octahedral
B. linear
C. trigonal planar
D. trigonal bipyramidal
E. tetrahedral
Planar trigonal C, The triangular planar molecules have a center atom that is linked to three other atoms and is sp2 hybridized. if the structure consists of just two bonds and one pair of electrons.
Which SP, SP2 or SP3, is more stable?The electrons of sp3 hybridized species are held farther away from the nucleus than those of sp2 (33% s-character) and sp (50% s-character) hybridized species because the s orbital is retained farther away from the nucleus and has a lower energy than the p orbital. The more stable the electrons are, the nearer to the nucleus they are.
What hybridization is the most potent?A relationship gets stronger and lasts shorter as its s-character increases. the strongest bond is a sp–sp bond, and sp3−sp3 bond is weakest.
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Sam pipettes out 10 mL of 1.5 M AgNO3 solution and dilutes it to make the total volume of 30 mL. What is the concentration of the new solution?
The new concentration (molarity) of the solution is 0.5M.
According to this question, Sam pipettes dilutes 10ml of a 1.5 M AgNO3 solution with water until the final volume is 30 ml.
Formula =
C1V1 = C2V2
Where;
C1 = initial molarityC2 = final molarityV1 = in initial volumeV2 = final volume1.5 × 10 = 30 × C2
15 = 30C2
C2 = 15/30 = 0.5M
Therefore, the new molarity of the solution is 0.5M.
What is concentration in chemistry?
A measure of the concentration of a chemical variants, in peculiar of a solute in a solution, in terms of amount of object per unit volume of solution is called concentration. Its also called molarity, amount concentration or substance concentration.
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The three dienes(red) associated with compound A - C do not react similarly with a dienophile. One diene has a low activation barrier and reacts rapidly; one diene has a high activation barrier and any product formed will be highly reactive; and one diene is inactive. Select the answer that lists dienes A, B, and C from most reactive toward a Diels-Alder reaction to unreactive.
A) c,b,a
B) a,b,c
C) a,c,b
D) b,a,c
Please round answer to two decimal places
The percent composition of Ca in CaCl2 is ____ %
Consider one mole of CaCl₂ is given. The molar mass of CaCl₂ is 111 g/mol and mass of Ca is 40 g/mol. Thus, percent composition of Ca is 36.03 %.
What is percent composition?Percent composition of an element in a compound is the ratio of its mass in the compound to the total mass of the compound multiplied by 100.
Consider one mole of CaCl₂ is given. Atomic mass of Ca = 40 g/mol
atomic mass of Cl = 35.5 g/mol
2 moles of Cl = 35.5 × 2 = 71 g.
molar mass of CaCl₂ = 71 g + 40 g = 111 g/mol
The percent composition of Ca in one mole of CaCl₂ is:
= 40 g/ 111 g × 100
= 36.03%.
Therefore, the percent composition of Ca in one mole of CaCl₂ is 36.03 %.
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PLEASE HELP ME!!!!!
At what point does the mass have the most KINETIC ENERGY?
Answer: Kinetic energy is highest when the velocity is the highest.
Explanation:
In the following reaction, 8.24 mol of P4 mix with 24.2 mol of O₂.
P4 (s) + 5 O2 (g) → 2 P₂O5 (s)
a. Find the limiting reagent. Explain.
b. How many moles of P2O5 (s) will be produced?
C. How many grams of P₂O5 (s) will be produced?
The limiting reagent is O₂.
What is reagent?Reagents are substances used to facilitate or accelerate chemical reactions. They can be either synthesized in the laboratory or found naturally. Reagents can also serve as catalysts, solvents, buffers, surfactants, and/or scavengers. They are essential components of most chemical processes, enabling scientists and engineers to control and manipulate reactants and products. Reagents are also used to detect, measure, and identify substances in a variety of analytical procedures.
a. The limiting reagent is O₂. This is because there is less moles of O₂ than P4, so O₂ will be used up faster and will be the first reactant to be completely used up.
b. 24.2 mol of O₂ will react with 8.24 mol of P4, producing 16.16 mol of P₂O5 (s).
c. 16.16 mol of P₂O5 (s) will produce 143.1 g of P₂O5 (s). This is calculated by using the molar mass of P₂O5 (s): 143.1 g/mol.
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Use the table below to calculate the atomic
mass of element X. Then use the periodic table
to identify the element. Show all your work.
The element is Oxygen and the atomic mass is 15.99 or we could say
16 amu.
How would you define atomic mass?The weight of one atom in a chemical element is its atomic mass, denoted by the symbol ma. Protons, neutrons, and electrons, three subatomic atomic particles with atomic masses, are involved.
A chemical element's atoms are the basic building blocks of matter. An atom's central nucleus, which is composed of all of them, is surrounded by one or more negatively charged electrons. The positively charged nucleus contains one or more of the relatively heavy protons and neutrons.
15.995 x 99.762/100 = 15.956
16.999 x 0.00038 = 0.00645962
17.999 x 0.002 = 0.035998
The atomic mass of element X = 15.956+0.00645962+0.035998
For a total of approximately 16 or 15.99, we add these.
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Calculate the root mean square speed for a sample of neon gas (Ne) at 298K. Your answer should have three significant figures.Use R=8.314 J/(K mol).
The root mean square (rms) value for Ne gas at 298k is 606.954 m/s.
Root mean square (RMS) speed of a gas is given by,
[tex]V_{rms}[/tex]=[tex]\sqrt{3KbT/m}[/tex]
where Kb = 1.38*10^-23 JK^-1 is the boltzmann constant.
T=Temperature in kelvin
m=mass of one molecule or an atom of the gas (in Kg)
We can also write the above expression as,
[tex]V_{rms}[/tex]=[tex]\sqrt{3RT/Mm}[/tex] where, Mm/m=R/Kb
where, R=8.314 JK^-1 Mol^-1 is the universal gas constant.
Mm= molar mass of the gas in Kg
for the neon(Ne) gas, Mm=20.2g/mol=20.2*10^-3 kg/mol
T=298k
putting all the values in the above equation, we get
[tex]V_{rms}[/tex]=[tex]\sqrt{3(8.314 Jmol^-1 K^-1)*298K/20.2*10^-3Kmol^-1}[/tex]
=[tex]\sqrt{367.956*10^3 m^2s^-2}[/tex] ( Since, 1J=1kg m^2/s^2)
=606.954 m/s
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How much water has to be evaporated from 250ml of 1M Ca(OH)2 to make it 3M
[tex]\frac{1}{6}L[/tex] or 166.667 ml of water must be evaporated in order to make this solution 3M.
Explanation:1. Analyse the information.When the problem states "250ml of 1M Ca(OH)₂", it means that you have 250ml of a solution that contains 1 mole of solute (Ca(OH)₂) for each liter of the solution.
In order to make a 1M solution be a 3M solution, we'll have to remove some of the solvent liquid, in order to make it more concentrated.
2. Express the molarity.The original molarity is: M= Moles of solute (n) / Liters of solution (v).
3. Find the molarity.Since the problem states that the original molarity is 1M, we have 1 mole of solute per liter of solution in the original solution. Therefore, initial molarity is: [tex]M=\frac{1mol}{1liters}=\frac{0.250mol}{0.250L}[/tex]
250ml= 0.250 L.
4. Convert the molarity to 3M.
As you may see, in order to make the molarity fraction equal 3M, we'll have to multiply the numerator by 3 or divide the denominator by the same number:
[tex]M=\frac{0.250mol}{0.250L/3}=\frac{0.250mol}{\frac{1}{12} L}[/tex]
5. Calculate the amount of solution evaporated.The amount of solution evaporated is given by the difference between the denominator of the molarity of the original expression and the new expression:
[tex](0.250-\frac{1}{12})\\ \\(\frac{3}{12}-\frac{1}{12})L\\ \\\frac{2}{12} L\\ \\\frac{1}{6} L[/tex]
6. Conclude.[tex]\frac{1}{6}L[/tex] or 166.667 ml of water must be evaporated in order to make this solution 3M. The ending product will have the following molarity:
[tex]M=\frac{0.250moles}{\frac{1}{12} L} =3M[/tex].
Suppose you heat a metal object with a mass of 32.4 g to 96.3 °C and transfer it to a calorimeter containing 100.0 g of water at 17.6 °C. The water and metal reach a final temperature of 24.8 °C. Metal in a covered cup with a thermometer and heat indicated as leaving the metal. What is the specific heat of the metal in J g ⋅ ∘ C ?
Specific heat capacity of a substance is the amount of heat required to raise the temperature by one degree Celsius of one gram of a substance. Therefore, the specific heat of the metal is 42.09J g ∘ C.
What is Enthalpy?Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Mathematically, Enthalpy is directly proportional to specific heat capacity of a substances. Internal energy is the sum of all kinds of energy that the particles of a matter can possess, for example translational energy. Rotational energy.
for metal for water
m×C×(final temperature - initial temperature) = m×C×(final temperature - initial temperature)
Substituting all the given values in the above equation, we get
32.4 g×C×( 24.8 °C- 96.3 °C) = 100.0 g×4.18×(24.8 °C- 17.6 °C)
-71.5×C= 3,009.6
C= 42.09J g ⋅ ∘ C
Therefore, the specific heat of the metal is 42.09J g ∘ C.
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Differentiate between an organic combustion reaction and an inorganic combustion reaction.
this experiment focuses on a chemical reaction based on alka-seltzer tablets, which you may have at home and even used yourself. however, we can still view this reaction through the chemical perspective we've been developing in this class. gg
Sodium bicarbonate and citric acid are used in this activity's interaction to create water and carbon dioxide.
HCO3- (aq) + H+ (aq) H2O (l) + CO2 (g)
Citric acid and sodium bicarbonate (NaHCO3) are also present in the pills Hydrogen ions (H+) and bicarbonate (HCO3-) are created when the tablet dissolves in water. The two compounds can then react in accordance with the reaction described above once they are in solution. The HCO3- and H+ must contact at the proper angle and with the appropriate amount of energy for the reaction to take place. Since there are more opportunities for collisions when the tablet is broken into more pieces and when the temperature is higher because the molecules are moving more quickly, the likelihood of this happening increases.Students will test out several scenarios for how Alka Seltzer tablets and water interact in this project. Students will start to understand what variables chemical engineers can regulate to achieve the desired outcome by varying temperature and the surface area available for reaction.It is customary to complete this task before making rockets in order to familiarize oneself with the reaction's characteristics before employing it in the Alka Seltzer Rockets exercise.Hence, Sodium bicarbonate and citric acid are used in this activity's interaction to create water and carbon dioxide.
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Pls pls help me
In wildlife photography, it is common for the subject to be placed in the middleground. What techniques do these experts use to put the focus on their subjects in the middleground? How have you used these techniques in your own photography practice?
The technique that wildlife photography experts use to put the focus on their subjects in the middle ground is called Deep Focus.
How do you use Deep focus when making a film?A narrow aperture is typically used to produce deep focus. Because a camera's aperture regulates how much light enters the lens, obtaining deep focus necessitates a bright picture or a lengthy exposure. A wide-angle lens also sharpens a bigger section of the image.
Deep focus in cinematography maintains a tight focus on all parts of an image, catching crucial actions in both the front and background.
Deep focus is used by directors for situations with significant movement in both the front and background of the frame. This type of staging is known as "deep space" or "deep staging" by directors because it involves the placing of performers, props, and set elements at tremendous depth.
A filmmaker must be able to capture a well-defined image for such a shot to succeed. Such sharpness is possible with a deep-focus photo.
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Which of the following best explains why more energy is required for the process occurring at 110 K than for the process occurring at 90 K? A. Intermolecular attractions are completely overcome during vaporization B. Intermolecular attractions in the solid phase are weaker than in the liquid phaseC. Electron clouds of methane molecules are less polarizable at lower temperaturesD. Vaporization involves larger increase in temperature
Vaporization totally overcomes intermolecular attractions. Water has an enthalpy of vaporization (energy required to boil) of 40.7 kJ/mol.
A is the ideal answer.
Which of the following best explains why CaF2 dissolves in water with a positive value for H?Which of the following best exemplifies how the positive value of H° for CaF2 dissolving in water is explained? In the crystal lattice, Ca2+ ions and F- ions have very potent ion-ion interactions.
Which of the following best justifies the claim and accurately determines whether Cl or Ar has the higher first-ionization energy?Due of its greater effective nuclear charge, Ar. The atomic radius and initial ionization energy of several elements are displayed in the table above.
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Classify each phase change as exothermic, endothermic, or neither exothermic or endothermic. Exothermic Endothermic Neither Answer Bank melting freezing vaporization sublimation deposition condensation Phase changes are transitions between solid, liquid, and gas phases. For example, ice melting is an example of a phase change from a solid (ice) to a liquid (water). Phase changes involve changes in energy. Which of the statements regarding phase changes are true? ✓ Melting is the conversion of a solid to a liquid. O Condensation is the conversion of a liquid to a solid. O Sublimation is the conversion of a solid to a gas. O Deposition is the conversion of a solid to a gas.
Melting, sublimation, and vaporizations are endothermic. Freezing, deposition, and condensation are exothermic.
What are endothermic and exothermic reactions?
Chemical processes referred to as endothermic reactions occur when the reactants take in heat energy from their environment to create products. These reactions produce a cooling effect by bringing the temperature of the space around them down. When a chemical connection is broken, energy is frequently released in the process. Similar to how physical bonds are formed, chemical bonds too require energy. There are numerous ways that energy can be provided or discharged (such as heat, light, and electricity). Endothermic reactions typically result in the creation of chemical bonds while absorbing heat from the environment.An exothermic reaction is one in which energy is given off as heat or light. The change in enthalpy (H) in an exothermic reaction will be negative. The net energy needed to start an exothermic reaction is therefore less than the net energy produced by the process, which makes sense. The net amount of heat energy that passes through a calorimeter, a device used to quantify the heat emitted by a chemical reaction, equals the opposite of the system's total energy change.Hence, all about exothermic and endothermic process.
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photosynthesis can be divided into the light dependent reaction and the light independent reaction. determine which of the following key terms would be associated with each reaction.
The light -dependent stage of photosynthesis contain the absorption of light via pigments consisting chlorophyll and the switch of electrons from water to generate ATP and NADPH. These reactions arise in the thylakoid membranes of the chloroplasts and also are referred to as the Hill response or the electron transport chain. Key phrases related to the light dependent stage are:
Chlorophyll: a pigment found in the chloroplasts of plants that absorbs light energy and converts it into chemical energy.Thylakoid: a flattened, stack-like membrane found in the chloroplasts of a plant life where the light-dependent reactions of photosynthesis arise.ATP: adenosine triphosphate, a molecule that stores and releases energy in cellsNADPH: nicotinamide adenine dinucleotide phosphate, a molecule that carries electrons and hydrogen ions and is involved in the synthesis of glucose and different natural compoundsElectron transport chain: a sequence of reactions where electrons are transferred from one molecule to another, producing energy which is used to supply ATPThe light-independent reactions of photosynthesis, additionally referred to as the Calvin cycle or the carbon fixation cycle, contain the conversion of carbon dioxide into glucose and different natural compounds by the usage of the energy saved in ATP and NADPH. These reactions arise in the stroma of the chloroplasts. Key phrases related to the mild-unbiased reactions include:
Calvin cycle: a sequence of reactions where carbon dioxide is transformed into glucose and different natural compounds by the usage of the energy saved in ATP and NADPHStroma: the fluid-filled space of the chloroplasts where the light-independent reactions of photosynthesis take place.Carbon fixation: the method of changing carbon dioxide into natural compoundsGlucose: a simple sugar this is a vital supply of energy for cells.Read more about photosynthesis at:
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Solution #2 will need to contain 11 g/L of cerium (IV) ammonium nitrate (Ce(NH4)2(NO3). We will need to prepare 50.0 mL of solution 2. How many grams of cerium (IV) ammonium nitrate will we need to measure out?
The mass (in grams) of (NH₄)₂Ce(NO₃)₆ needed, given that the concentration of the solution is 11 g/L, is 0.55 g
How do I determine the mass of (NH₄)₂Ce(NO₃)₆?The concentration of a solution in grams per liter is defined as follow:
Concentration = mass / volume
Using the above formula, we can calculate the mass of (NH₄)₂Ce(NO₃)₆ needed to prepare the solution. This is illustrated below:
Concentration = 11 g/LVolume = 50 mL = 50 / 1000 = 0.05 LMass =?Concentration = mass / volume
11 = mass / 0.05
Cross multiply
Mass = 11 × 0.05
Mass = 0.55 g
Thus, the mass of (NH₄)₂Ce(NO₃)₆ needed is 0.55 g
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we saw that in the tlc plates, the 9-fluorenone moves far up the plate than the 9-fluorenol. that means that 9-fluorenone is a. 9-fluorenone is a larger moleculeb. 9-fluorenone is less polar than 9-fluorenol so it travels farther up the TLC plate.c. 9-fluorenone is aromatic so it travels farther up the TLC plated. 9-fluorenone is warmer than 9-fluorenol so it travels farther up the TLC plate
Polar molecules would move further in a liquid solution than in a non-polar solvent because they are more closely bound to polar solvents.
What does 9-fluorenone serve?The precursor 9-fluorenone has been used in the synthesis of a wide range of organic the electronic devices. Here are a few the typical instances: creation of the host for the blue and green organic light-emitting diodes (PHOLEDs).
Where is fluorene found?As the second most common PAH, fluorene is often present as a gas from a number of the sources, including tobacco smoke, resinous pitch, petroleum refining, exhaust fumes gases, and gasoline.
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A carbohydrate with two sugar units would be a(n) __________. A. Polysaccharide
B. Monosaccharide
C. Carbosaccharide
D. Oligosaccharide
A carbohydrate with two sugar units would be a(n) oligosaccharide. Correct answer: letter D.
This is because an oligosaccharide is a carbohydrate that contains two to ten sugar molecules, making it a carbohydrate with two sugar units.
What are carbohydrates?Are a type of organic compound found in living things. They are composed of carbon, hydrogen and oxygen in the ratio of C:H:O = 1:2:1. Carbohydrates are the main source of energy for the body and are found in many foods, such as:
GrainsFruitsVegetablesDairy productsThey can be further divided into simple carbohydrates, such as sugar, and complex carbohydrates, such as starch.
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Identify the reactants and products at each electrode in the overall reaction for this voltaic cell. Chemical Species (4 items) (Drag and drop into the appropriate area below) H2(g) Mg?'(aq) Mg(s) H(aq) Reactants and Products Product Reactant
The state symbols for the reactants, products, and addition are as follows: Mg(s) + H2SO4 (aq) MgSO4 (aq) + H2 (g), where the sole reactants are H+(aq) and Fe (s). H2 is the offered product (g).
What are H2 O2's reactant and product?Energy is released and the molecules of hydrogen and oxygen can join to generate either water or hydrogen peroxide when the molecules of H2 and O2 are mixed and allowed to react.
What substances are the reactants and products in this reaction?The substance or substances to the left of the arrow in a chemical equation are the reactants. Reactants are substances that are present at the beginning of a chemical reaction. The substance or substances to the right of the arrow are products.
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