Taking into account the definition of Ideal Gas Law, the volume of the container, the pressure of the gas, the number of gas particles, and the temperature of the gas are related by the Ideal Gas Law.
Ideal Gas LawAn ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law:
P×V = n×R×T
where:
P is the gas pressure.V is the volume that occupies.T is its temperature.R is the ideal gas constant. The universal constant of ideal gases R has the same value for all gaseous substances. n is the number of moles of the gas. SummaryIn summary, the volume, the pressure, the number of gas particles, and the temperature are related by the Ideal Gas Law.
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A 43.40 mg sample of an alcohol contains 15.10 mg O, 22.6 mg C, and the rest is hydrogen. What its percent composition of carbon.
? % C
Answer:
The alcohol contains 15.10 mg O, and 22.6 mg C, and the rest is hydrogen. 15.10 / 43.40 = 37.49 %. Therefore, the percent composition of oxygen is 37.49 %.
The suspect’s ridge characteristics match the ridge characteristics that were gathered from the crime scene. What does this MOST likely mean?
A.
These fingerprints are from the same person.
B.
The probability is low that this is the same person.
C.
These footprints are from different people.
D.
A mistake was made when gathering evidence.
The suspect’s ridge characteristics match the ridge characteristics that were gathered from the crime scene means these fingerprints are from the same person.
Fingerprints have been used for long time in forensic identification purposes thanks to features within their patterns called ridge characteristics or also minutiae. All fingerprints fall into one of three basic overall patterns, the arch, the loop, and the whorl.
Humans have characteristically ridged skin on their fingertips, palms, and also soles. This roughened skin makes it easier to grip things and, up close as well, it appears as patterns of tiny ridges and furrows. The fingertips, palms, and soles can sometimes create a transfer of these patterns when they come into contact with surfaces and objects. The most important of these transfers are fingerprints, made when the tips of the fingers and thumbs make impressions.
So, If the ridge characteristics are matching then there is high chance that those fingerprints are of the same person.
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to determine the concentration (c) of a substance, the absorbance (A) range that produces the
maximum precision lies between 0.20 and 0.80. Suppose the molar absorptivity coefficient (E)
of a substance was found to be 7769 M cm. Using a cuvette with a 1 cm path length (!), what
range of concentrations will produce an absorbance between 0.20 and 0.80?
The range of concentrations that will produce an absorbance between 0.20 and 0.80 is 0.00258 - 0.01032 M.
What is concentration?
Longer attention spans, better mental and emotional control, and the ability to concentrate on one thing at a time are all signs of concentration. Concentration is "the capacity to focus all of your effort and attention with one thing, without thinking about other things." The Macmillan Dictionary defines concentration as "the process of giving your full attention to something." When concentrating, the mind is single-mindedly focused on the thing that is being concentrated on. This particular thought becomes the focus of all mental energy. It takes training to hone the skill of mind control and attention regulation, which is uncommon. The majority of people struggle to keep their attention under control and to keep their thoughts entirely on one thing for any length of time.
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The dew point for a day's weather is calculated to be 18°C.
Which statement is true based on the dew point?
O Water will condense if the air temperature drops below 18°C.
O Dew is unlikely to form on the ground if the temperature is below 18°C.
OIt is likely to rain if the temperature rises above 18°C.
O Water in the air will remain vapor below 18°C.
(Free ten points, thanks ya’ll for helping me on other questions)
Dew point for a day's weather is calculated to be 18°C, then the statement that is true based on the dew point is a)Water will condense if the air temperature drops below 18°C.
What is dew point?Dew point is that temperature to which air must be cooled to become saturated with water.
When it is cooled below the dew point, moisture capacity is reduced and water vapor will condense to form dew. When this takes place via contact with colder surface, dew will form on surface.
Dew point is affected by humidity. When there is more moisture in air , then dew point is higher.
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A chemical equation is shown below.
HgS + O2 → HgO + SO2
What are the coefficients that should be added to balance this equation? Use complete sentences to explain your answer.
Explain how this chemical reaction demonstrates the conservation of mass.
The coefficients that should be added to balance the chemical equation are: 2, 3, 2, 2
How do I determine the coefficients?Coefficients are numbers written before elements or compounds in a chemical equation in order to balance it.
To obtain the coefficients, we shall balance the equation. This is illustrated below.
HgS + O₂ → HgO + SO₂
There are 3 atoms of O on the right and 2 atoms on the left. It can be balance by writing 3 before O₂, 2 before HgO and 2 before SO₂ as shown below
HgS + 3O₂ → 2HgO + 2SO₂
There are 2 atoms of Hg on the right and 1 atom on the left. It can be balance by writing 2 before HgS as shown below
2HgS + 3O₂ → 2HgO + 2SO₂
Now, the equation is balanced!
Thus, the coefficients needed are 2, 3, 2, 2
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.How many moles of NaOH are required to prepare 1.98 L of a 0.285 M NaOH solution?
Answer: 0.5643 mol NaOH
Explanation:
First, I would start off with plugging in what you can for the molarity equation, which is:
M = mol/L
So, since you have 0.285M and 1.98 L you can plug that in where it fits. So it’d be:
0.285M = mol/1.98L
To isolate the mols on one side of the equation, you multiple both sides by 1.98 L. (Because it’s in the denominator. If you were trying to find L, you would divide by # of mols since it’s in the numerator).
After multiplying, your final answer should be 0.5643 mols of NaOH.
how solid particles are arranged
Explanation:
The particles in solids are arranged in a regular way. The particles in solids move only by vibrating about a fixed position. This gives solids a fixed shape and means that they cannot flow like liquids. The hotter a solid gets, the faster its particles vibrate.
Regarding fermentation:
This process allows energy production to continue in low 02 conditions.
Pyruvate acts as the fina. ectron acceptor, regenerating NAD+.
In humans, fermentations results in the production of lactate (lactic acid).
Fermentation in animals can provide quick burst of energy over a short period of
time.
All of these choices are correct.
Two ATP were created, two NAD+ were converted to two NADH + H+, and two glucose molecules were divided into two pyruvate molecules during the glycolysis process.
What transpires to pyruvate under anaerobic or low oxygen conditions?Anaerobic glycolysis predominates when there is no oxygen present (anaerobic conditions) and in cells without mitochondria. As lactate dehydrogenase reoxidizes NADH to NAD+, the pyruvate is degraded to lactate. Erythrocytes, which lack mitochondria, rely on this mechanism as a major source of ATP.
What happens to pyruvate if the cell's oxygen supply is low?Pyruvate will go through a process known as fermentation when oxygen is absent or if an organism is unable to engage in aerobic respiration.
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A sample of gas has a volume of 2.50 L at 536 kPa and 75.0 °C. What is the pressure (in atm) of the gas if it expands to 3.75 L at 25.0 °C?
How do i start this?
Answer:
3.02 atm
Explanation:
To find the final pressure, you need to use the Combined Gas Law:
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
In this equation, "P₁", "V₁", and "T₁" represent the initial pressure, volume, and temperature. "P₂", "V₂", and "T₂" represent the final pressure, volume, and temperature. You first need to convert the temperatures from Celsius to Kelvin (1°C = 273 K). You should convert the initial pressure from kPa to atm (1 atm = 101.3 kPa).
P₁ = 536 kPa / 101.3kPa = 5.29 atm P₂ = ? atm
V₁ = 2.50 L V₂ = 3.75 L
T₁ = 75.0 °C + 273 = 348 K T₂ = 25.0°C + 273 = 298 K
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex] <----- Combined Gas Law
[tex]\frac{(5.29atm)(2.50L)}{348K}=\frac{P_2(3.75L)}{298K}[/tex] <----- Insert values
[tex]0.0380=\frac{P_2(3.75L)}{298K}[/tex] <----- Simplify left side
[tex]11.32 = P_2(3.75L)[/tex] <----- Multiply both sides by 298 K
[tex]3.02 = P_2[/tex] <----- Divide both sides by 3.75 L
How much heat in KJ must be transferred to the following reaction to produce 198 gSI from SiO₂ (silica) and C (carbon) according to the following reaction scheme? SiO₂(s) + 2C(s) → Si(s) + 2CO(g) H=690kj
The heat energy required to produce one mole of silicon is given 690 KJ. Thus, to produce 198 g or 6.82 moles of Si is 4710.6 KJ.
What is reaction enthalpy?Enthalpy of a reaction is the change in heat energy absorbed or released from a reaction. The enthalpy change of a reaction can be calculated from the standard enthalpy of formation of each of the reactants and products.
The given balanced reaction produces one mole of metallic silicon. The atomic mass of silicon is 29 g/mol. Thus 29 g of silicon is produced from one mole of silicon dioxide requiring an energy of 690 KJ.
Therefore, the 198 g of silicon, which is 198/29 = 6.82 moles of silicon needs 6.82 times the heat energy required for one mole
Heat energy = 6.82 × 690 KJ
= 4710.6 KJ.
Hence, the heat required to produce 198 g of Si from the given reaction is 4710.6 KJ.
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Hydrogen sulfide gas is a flammable gas. The gas burns with
a blue flame according to the following equation:
2 H₂S (g) + 3 O2 (g) => 2 SO2 (g) + 2 H₂O(g)
5.00 L of hydrogen sulfide gas and 7.00 L of oxygen were
allowed to react.
Calculate the theoretical yield, in L (liters), of sulfur dioxide.
All the gases were at the same temperature and pressure.
Answer:
4.67 liters of SO2 with sig figs
Explanation:
To do this reaction, we first must find the limiting agent.
in this problem, 5 liters of H2S are reacted with 7 liters of O2, and each two moles of H2S corresponds to 3 moles of O2. Assuming ideal behavior, 1 liter of H2S has the same number of moles as 1 liter of O2 has. So, 2 liters of H2S react with 3 liters of O2. To find the limiting reagent, focus on one reagent and calculate how much of the other reagents would be needed to fully consume that one reagent.
Focus on H2S:
5 liters of H2S would require 7.5 liters of O2 (since each 2 liters of H2S requires 3 liters of O2)
Focus on O2:
7 liters of O2 would require 14/3, or 4.666... liters of H2S.
Since we don't have 7.5 liters of O2 (we only have 7 liters) to react with all 5 liters of H2S, we would say that O2 is the limiting reagent, and that we have 7 liters of it.
Next, figure out how much product can be produced per mole of that limiting reagent. 3 moles of O2 and 2 moles of H2S turns into 2 moles of SO2 and 2 moles of H2O. Thus, the ratio of O2 to SO2 is 3:2
We have 7 liters of O2, and since the ratio of O2 to SO2 is 3:2, we can set up the equation:
7:x = 3:2 where x is the number of liters of SO2
cross multiply (or solve with another method) to get:
x = 14/3, or 4.666... liters of SO2
What is boric anhydride
¿What is boric anhydride
Called boron oxide, chemically we can find it in nature. have a white and odorless appearance. It has great benefits that help people of any age and gender, in the field of conventional medicine.
Boric acid or trioxoboric acid (III) is a slightly acidic chemical compound.
A LITTLE MORE CONCEPT :
Your Formula : [tex]\bold{H_3BO_3}[/tex]
Its Molar Mass: 61.83 g/mol
Its Density: 1.44 g/cm³
Its Melting Point: 170.9 °C
Its Soluble in: Water
His PH: 5.1
what will the kid have hair or no hair the mom has no hair also has two lowercase h the dad has hair also have two capital h the picture is the punnett square
Answer:
All of the children will have hair.
Explanation:
Since the Father has Dominant genes, for having hair, and the mother having recessive genes, for not having hair, the Dominant genes override the recessive, making the children have hair.
consider the following Equilibrium
N2(g) + 3H2(g) ⇔ 2NH3(g) + 92.2 kj
which of the following sets of conditions would maximize the production of ammonia in the reaction? explain.
A) Low pressure and high temperature
B) Low pressure and low temperature
C) High pressure and high temperature
D) high pressure and low temperature
Answer:
C) High pressure and low temperature
Explanation:
Le Chatelier's principle. There are 4 mols of gas on the reactants side and 2 moles of gas on the products, as well as some heat. By Le Chatelier's principle, if you increase the pressure (by presumably decreasing the volume), then equilibrium will push to the side with fewer moles, in this case ammonia. Since heat is on the products side, it works like a product. If you take away a product (decreasing temperature/product), then the reaction will push to ammonia to make up for the loss.
What can you conclude from the deflection of a cathode ray in a magnetic field?
a. The ray must have a positive charge.
b. The ray must need to travel in a vacuum
c. The ray must be composed of charged particles.
d. The ray must be composed of iron.
We can you conclude from the deflection of a cathode ray in a magnetic field that the ray must be composed of charged particles. Hence Option C is correct
J.J. Thomson came to the conclusion that rays were and are primarily negatively charged particles present or moving in a set of a positive charge after completing the experiment. The structure of an atom was further understood by physicists thanks to this idea. He also made the important discovery that the cathode rays' or electrons' properties were independent of the cathode ray tube's kind of gas or the electrodes' material. All all, we can conclude from this that all atoms are made up primarily of electrons.
The positively charged particle is called a A tiny nucleus, also known as a nucleus, houses all of the positive charge and the majority of the mass of an atom. A proton is a positively charged subatomic particle. The majority of an atom's volume is made up of empty space.
The number of positively charged protons in the nucleus is equal to the number of electrons that are distributed outside the nucleus. This describes how an atom's overall electrical neutrality.
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How to manipulite a compound microscope?
Answer:
Remove the microscope from the cabinet USING both of your hands supporting the arm and the base.Place it on a flat surface.Turn the coarse adjustment knob to raise the body tube.Revolve the nosepiece.Put it on Low-power objective. ...Adjust the diaphragm.Adjust the mirror until there is good light.Explanation:
Thanks
Answer:
Explanation:
Look at the objective lens (3) and the stage from the side and turn the focus knob (4) so the stage moves upward. Move it up as far as it will go without letting the objective touch the coverslip. Look through the eyepiece (1) and move the focus knob until the image comes into focus.
Calculate the internal energy (in Joules) of a system that loses 134.8 J that is compressed with a pressure of 5.73 atm from 8.540 L to 1.00 L.
The change in the internal energy of the system is -4511.8 J.
What is the change in the internal energy?We know that according to the first law of thermodynamics, energy can neither be created nor destroyed but can be transformed from one form to the other.
Now we know that;
ΔE = q + w
ΔE = Change in internal energy
q = heat absorbed or evolved
w = work done
Now we have;
q = - 134.8 J (The system losses heat)
w = PdV
w = 5.73 (1.00 - 8.540)
w = -43.2 Latm or -4377 J
Then we have;
ΔE = - 134.8 J + (-4377 J)
ΔE = -4511.8 J
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An element E has the electron configuration [Kr] 5s24d105p2. The formula for the fluoride of E is most likely
Answer:
Sn (Tin)
Explanation:
All of the electron orbitals are filled up so look at where 5p2 is, which is Sn.
An element E has the electron configuration [Kr] 5s24d105p2. The formula for the fluoride of E is most likely to be Fe (iodine).
What is electronic configuration?Electronic configuration is defined as the distribution of electrons within its atomic orbitals. Atomic electron configurations are written using a standard notation that arranges all atomic subshells that contain electrons in a sequential order. The electron configuration is used to describe an atom's ground state orbitals, but it may also be used to depict an atom that has ionized into a cation or by compensating for any acquired or lost electrons in the orbitals after it, the anion.
It has a proton count of 53 and an atomic mass of 126.9. Iodine's atom, then, contains 53 electrons in the following configuration: 1s2, 2s2, 2p6, 3s2, 3d10, 4p6, 5s2, 4d10, 5p5 (Kr 4d10 5s2 5p5).
Thus, an element E has the electron configuration [Kr] 5s24d105p2. The formula for the fluoride of E is most likely to be Fe (iodine).
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A square chunk of plastic has a length of 5 cm,
width of 5 cm, and a height of 5 cm. It has a
g. What is its density?
mass of 200
The density of plastic of length of 5 cm, width of 5 cm, and a height of 5 cm would be 1.6 gm / cm3.
In this case
The dimensions of a square chunk of plastic is 5 cm x 5 cm x 5cm.
Mass, m = 200 gm
Density = Mass / Volume
It will form a cube. Hence, the Volume = side x side x side
So ,
d = 200 gm / 5cm x 5 cm x 5 cm
d = 1.6 gm / cm3
Hence , Density is equal to 1.6 gm / cm3.
What is density explain?
Density can be defined as the mass per unit volume. Density Symbol.
Density Formula: ρ = m/V,
where ρ is the density
m is the mass of the object and V can be defined as Volume.
What is a unit of density?
It is commonly expressed in units of grams per cubic cm.
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Could I have help with part 2 please (:
Mass spectrometer M+1 peak is small and m/z unit to the right of the main molecular ion peak
Mass spectrometry is an analytical tool useful for measuring to mass to charge ratio and one or more molecule present in a sample and there measurement can often be used to calculate the exact molecular weight of the sample components as well and there is a technique
Ionization: there are many type of ionization method are used in mass spectrometry method the classic method that most chemist are familiar with are electron impact and fast atom bombardmentDeflection : the ion are then deflected by magnetic field according to their masses and lighter they are the more deflectedDetection : different types of detector are used depending upon factor including dynamic range and special information retention and noise and suitability to the mass analyzerKnow more about peak
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PLEASE HELP
The molar mass of NO2 is
46.01 g/mol.
What is the mass
of 3.45 moles NO2?
[ ? ] g NO₂
Mass of NO2 is 158.73 grams
In chemistry, the most commonly used unit for molarity is the number of moles per liter, which is having the unit symbol mol/L or mol/dm3 in SI unit. A solution with a concentration of 1 mol/L is said to be 1 molar, commonly designated as 1 M.
To calculate the mass from the number of moles we use the below given formula;
number of moles = Weight of the substance
Molecular mass
Weight or mass = number of moles × molecular mass
weight = 3.45 × 46.01
= 158.73 grams
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The scientist describes a piece of glass as, “clear, one pound, and square.” What are they MOST likely describing?
A.
fragments and particles
B.
radial and concentric fractures
C.
physical properties
D.
chemical properties
If a scientist describes a piece of glass as, “clear, one pound, and square.” the thing he is MOST likely describing are C. physical properties
What is a Physical Property?This refers to the characteristics of a property that is measurable, and its shape can be observed, without any necessary outward or external change such as density, size, volume, etc
Hence, it can be seen that based on the given description, it is stated that a piece of glass contains the following properties: “clear, one pound, and square.” and this shows its physical properties.
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A solution has a volume of 375 ml and contains 42.5 g of NaCl. What is its molarity?
The molarity of the sodium chloride solution is 1.95 M.
What is the molarity?The term molarity has to do with the concentration of substance in mole per decimeter cubed. There are several units of concentration and in every case, there is always a given unit of concentration that is most apt to be used at that point.
Given that;
Mass of the sample = 42.5 g
Molar mass of NaCl = 58.5 g/mol
Volume of the solution = 375 ml or 0.375 L
Number of moles of NaCl = 42.5 g/58.5 g/mol = 0.73 moles
Molarity of the solution = 0.73 moles/0.375 L = 1.95 M
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Can someone please help with 28?
The two half cells are : Fe³⁺ + e⁻ ----> Fe²⁺
Cu²⁺ + 2e⁻ ---> Cu
The standard electrode potential E° cell = 0.43 V
The overall reaction is given as :
Fe³⁺ + Cu -----> Cu²⁺ + Fe²⁺
The two half cells are : Fe³⁺ + e⁻ ----> Fe²⁺ E° = 0.77 V
Cu²⁺ + 2e⁻ ---> Cu E° = 0.34 V
Cu ----> Cu²⁺ + 2e⁻ E° = - 0.34 V
The standard electrode potential E° cell = 0.77 V + (-0.34 V)
= 0.43 V
Thus, The two half cells are : Fe³⁺ + e⁻ ----> Fe²⁺
Cu²⁺ + 2e⁻ ---> Cu
The standard electrode potential E° cell = 0.43 V
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The X-rat on the right is pointing out an area on the back and bottom of tuts skull
Based on the x-ray, the thing that could have caused the injury in both of these images is that the wounds and cave-in of the broken bone can point to blunt force trauma, which may have resulted from a fall and hitting his head or from an animal striking him in the head.
What could have damaged King Tut's head, and how?It gave precise information necessary for a precise forensic reconstruction of King Tut. The 1,700 digitized X-ray images in cross section created by the CT scan showed the mummy from head to toe. It displayed a gray head, neck vertebrae, a hand, numerous pictures of rib cages, and a skull cut in half.
Note that researchers published its findings, concluding that the corpse's head was likely broken either during embalming or during research by archeologist Howard Carter's team, which found the mummy in 1922.
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See full question below
The x-ray on the right is pointing out an area on the back and bottom of Tut's skull. The large white part is Tut's skull. Notice the smaller white part that the arrow is pointing to. The separation between these two white areas indicate an injury to Tut's skull. What could have caused the injury in both of these images?
Since 0.450/0.160=2.81 , the second reaction contains 2.81 times the amount of reactant compared to Reaction 1. The reaction rate is proportional to the square of the amount of reactant, so the rate will increase by a factor of the square of 2.81.
The reaction rate is proportional to the square of the amount of reactant, so the rate will increase by a factor of the square of 2.81 is 7.8961
The rate of reaction is the speed at which reaction proceed and it often expressed in term to either the concentration of product that is formed in a unit of time or the concentration of reactant that is consumed in a unit of time and formula is concentration of any reactant or product as [reactant] or [product] so the concentration A can be represented as [A] and that of B as [B]
Here given data is
0.450/0.160=2.81 , the second reaction contains 2.81 times the amount of reactant compared to Reaction 1
Then square of 2.81 is (2.81)² = 7.8961
So the rate will increase by a factor of the square of 2.81 is 7.8961
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500.0 liters of a gas are prepared at 700.0 mmHg and 200.0 °C. The gas is placed into a tank under high pressure. When the tank
cools to 20.0 °C, the pressure of the gas is 30.0 atm. What is the volume of the gas?
1.530 L
153.3 L
24.75 L
9.510 L
The volume of the gas is 9.510 L
What is molar volume of gas?
The molar volume, symbol Vm, or of a substance in chemistry and related sciences is the ratio of the volume occupied by a material to the amount of substance, usually provided at a certain temperature and pressure. It is calculated by dividing the molar mass (M) by the mass density (): The SI measure for molar volume is cubic metres per mole (m3/mol), however it is more common to use cubic decimetres per mole (dm3/mol) for gases and cubic centimetres per mole (cm3/mol) for liquids and solids.
According to the combined gas equation,
P1V1/T1 = P2V2/T2
given a constant molar amount of gas
P1V1/T1 = P2V2/T2
V2 = 9.510 L
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what will the kids feet be webbed or have paws the mom has webbed feet the dad has paws the mom has capital f and lowercase f the dad has two lowercase f the picture is the punnett square
Answer:
its will be webbed
Explanation:
In the Calculations section you were asked to calculate the percent error in your Hess's Law determination. Discuss at least two possible sources of error that could contribute to your percent error.
The two possible sources of error that could contribute to your percent error include the following below:
Estimation processMeasuring instrument used.What is Percent error?This is a term which is referred to as the difference between the estimated value and the actual value in comparison to former and is usually expressed as a percentage.
However, there are different types of factors which contribute to this type of error and an example is the estimation process used which could result in non uniform value and also the type of measuring instrument and the conditions in which they are used.
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Step 3: Calculate the answer. The molar mass of americium-241 is 241.1 g/mol. A new smoke detector button contains . How many is this?
By the use of the Avogadro's number, the atoms are found to be 7.2 * 10^ 14 atoms in number.
What is the number of atoms ?We know that we can be able to use the Avogadro's number to be able to obtain the number of atoms that we can find in the atom. In this case, we have been told already that the molar mass of the atom is 241.1 g/mol. This implies that one mole of the atom does contain a mass of 241.1 g. With this settled, the number of atoms in one mole of the atom can be gotten as the Avogadro's number which is 6.02 * 10^23 atoms.
Thus we have;
If 241.1 g does contain about 6.02 * 10^23 atoms
2.90 * 10^-7 g would now be found to contain;
2.90 * 10^-7 g * 6.02 * 10^23 atoms/241.1 g
= 7.2 * 10^ 14 atoms
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Missing parts;
Calculate the answer. The molar mass of americkom-241 is 241.1 g/ mol. A new smoke detector button contains 0.290 micrograms