Answers
7a. Using the mole ratio from the balanced chemical equation, we can set up the following proportion:
n(N₂)/n(NH₃) = 1/2
where n(N₂) is the number of moles of N₂ and n(NH₃) is the number of moles of NH₃. Solving for n(N₂), we get:
n(N₂) = (10.0 mol NH₃) / (2 mol N₂/mol NH₃) = 5.00 mol N2
Therefore, 5.00 moles of nitrogen would be needed to make 10.0 moles of ammonia.
7b. Using the same mole ratio as above, we can set up the following proportion:
n(NH₃)/n(H₂) = 2/3
where n(H₂) is the number of moles of H₂. Solving for n(NH₃), we get:
n(NH₃) = (9.00 mol H2) x (2 mol NH3/3 mol H₂) = 6.00 mol NH₃
Therefore, 6.00 moles of ammonia could be made by completely reacting 9.00 moles of hydrogen.
7c. Again, using the same mole ratio as above, we can set up the following proportion:
n(N₂)/n(H₂) = 1/3
where n(N₂) is the number of moles of N₂. Solving for n(H₂), we get:
n(H₂) = (7.41 mol N2) x (3 mol H₂/1 mol N₂) = 22.2 mol H₂
Therefore, 22.2 moles of hydrogen would be needed to react completely with 7.41 moles of nitrogen.
8a. The amounts of reactants consumed and the amount of product made can be calculated using stoichiometry, which is based on the mole ratio from the balanced chemical equation. However, the mole ratio from the balanced chemical equation cannot be interpreted as a ratio of masses, since the molar mass (and thus the mass) of each substance is different.
8b. The mole ratio from the balanced chemical equation is based on the number of moles of each substance, which is proportional to the mass of each substance. Therefore, by using the molar mass of each substance, we can convert the mole ratio to a mass ratio. However, the mole ratio itself cannot be interpreted as a ratio of masses.
9a. Yes, the mole ratio from a balanced chemical equation can be interpreted as a ratio of masses. This is because the mole ratio is determined based on the stoichiometric coefficients in the balanced equation, which represent the number of moles of each substance involved in the reaction. Since the molar mass (mass per mole) of each substance is known, the mole ratio can be used to determine a mass ratio.
9b. The mathematical concept that explains how the mole ratio from a balanced chemical equation can be interpreted as a ratio of masses is the mole-to-mole conversion factor. This conversion factor is based on the stoichiometric coefficients in the balanced equation, which represent the mole ratio between the reactants and products. By multiplying the mole ratio by the molar mass of a substance, the ratio can be converted to a mass ratio.
To solve the problem "What mass of nitrogen is needed to produce 30.0 g of ammonia?", we would need to use the concept of stoichiometry and mole-to-mole conversions. We can start by writing the balanced chemical equation for the reaction:
N₂(g) + 3H₂(g) → 2NH₃(g)
From the equation, we can see that the mole ratio of N2 to NH₃ is 1:2. We can use this ratio to determine the number of moles of N2 needed to produce 1 mole of NH₃:
1 mole N₂ : 2 moles NH₃
Next, we can use the molar mass of NH₃ to convert the moles of NH₃ to grams:
2 moles NH₃ x 17.03 g NH₃/mole = 34.06 g NH₃
So, for every 34.06 g of NH₃ produced, we need 1 mole of N₂. Using this information, we can set up a proportion to solve for the mass of N₂ needed to produce 30.0 g of NH₃:
1 mole N₂ : 34.06 g NH₃ = x moles N₂ : 30.0 g NH₃
Solving for x, we get:
x moles N₂ = (30.0 g NH₃ x 1 mole N₂) / 34.06 g NH₃ = 0.881 moles N₂
Finally, we can convert the moles of N₂ to grams using the molar mass of N₂:
0.881 moles N₂ x 28.01 g N₂/mole = 24.67 g N₂
Therefore, we would need 24.67 g of nitrogen to produce 30.0 g of ammonia.
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Related Questions
What is bonding all about in chemistry?
Answers
Answer:
It is like about a attraction between atoms, molecules, and more.
Find the molecular formula of a compound that has 0.6g of nitrogen, 1.4g of O, and a molar
mass of 92.1 g/mol.
Answers
Dinitrogen Tetraoxide (N2O4)
The molecular formula of a compound that has 0.6g of nitrogen, 1.4g of O, and a molar mass of 92.1 g/mol is Dinitrogen Tetra oxide (N₂O₄).
What is the molecular formula?The molecular formula is the formula of the chemical name of the compound. It tells the composition or presence of atoms in a molecule. It defines the atoms or molecules present in a compound.
Dinitrogen Tetra oxide (N₂O₄) is a chemical name. It tells that this compound contains two atoms of nitrogen and four atoms of oxygen. The chemical name gives the quantity of the atoms.
The molar mass of a substance is the sum of its number of electrons or protons.
Molar mass /empirical formula
92.1 / 46 = 2.0 \
The formula will be (N₂O₄).
Thus, the molecular formula is Dinitrogen Tetra oxide (N₂O₄).
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Select the structure that corresponds
to the molecule name:
aniline
B.
A.
-NH₂
C. both
-NH₂
Enter
Answers
Answer:
B- \(C_{6} H_{5} NH_{2}\)Explanation:
Aniline is an organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is the simplest aromatic amine.
6. How many moles are in 8.30 x 1023 molecules of CO₂?
a.
b.
C.
d.
1.37
2.8
55.5
100
Answers
To find the order of a reaction with respect to one reactant, you will monitor the as the of . is changed.
Answers
The order of reaction is defined as the power to which the concentration of the reactants are raised in the rate equation of the reaction.
The order of reaction can be used to determine how a particular reactant affects the reaction. In order to find the order of a reaction with respect to a particular reactant, the concentration of the reactant is changed while keeping the concentration of other reactants constant. The rate of reaction is then measured and compared with the rate of reaction when the concentration of the reactant is not changed.The order of reaction with respect to a reactant can be determined using the following method:First, select a reactant whose order needs to be determined and change its concentration while keeping the concentration of other reactants constant. For example, if we want to find the order of reaction with respect to reactant A, we will change the concentration of A and keep the concentration of reactant B constant.Second, measure the rate of reaction at different concentrations of the reactant A. The rate of reaction can be measured by any suitable method such as change in color, pH, or by measuring the amount of product formed with time. A graph is plotted with rate of reaction on the y-axis and concentration of reactant A on the x-axis. The graph should be a straight line.Third, if the graph is a straight line passing through the origin, the order of reaction with respect to reactant A is one. If the graph is a straight line but does not pass through the origin, the order of reaction with respect to reactant A is two. If the graph is not a straight line, the order of reaction with respect to reactant A is either zero or fractional.For such more question on concentration
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An ion can be created when a .................... is lost or gained by an element.
Answers
Answer:
electron and ignore this woejdnks
a. Identify the structures shown in the diagram. b. Identify the information that is contained within these structures. c. Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person. d. Explain why the structures are in pairs.
Answers
The answer responses to the structures shown in the diagram are:
A. chromosomes
C. They would be the same.
B. They are in pairs because each one comes from a different parent.
What is the structure about?The chromosomes are in pairs because humans have a diploid number of chromosomes, meaning they have two sets of chromosomes, one inherited from each parent.
The nucleus is important in eukaryotic cells and has many important parts that help the cell work properly. There are some parts inside cells called the nuclear membrane, nucleoplasm, nucleolus, and chromatin. Chromatin is made up of DNA and other proteins.
Every part of a person's body has the same genes, but the way they are organized can be different in different types of cells. The chromosomes in our skin cells might not be the same as the chromosomes in our muscle cells, even if they come from the same person.
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Identify the structures shown.
A. chromosomes
B. mitochondria
C. nuclei
D. vacuoles
C
Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.
A. There would be longer.
B. They would be shorter.
C. They would be the same.
D. They would be different.
Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.
A. There would be longer.
B. They would be shorter.
C. They would be the same.
D. They would be different.
Explain why the structures are in pairs.
A. They aren't in pairs.
B. They are in pairs because each one comes from a different parent.
C. This cell is making a copy of itself.
D. The cell always has 2 copies in case 1 is damaged.
in the reaction 239/93 Np -> 239/94 Pu+X, what does X represent
Answers
In the reaction 239/93 Np -> 239/94 Pu + X, the symbol "X" represents an electron. Option C is correct.
This reaction involves the radioactive decay of Neptunium-239 (239/93 Np) into Plutonium-239 (239/94 Pu). Specifically, it undergoes beta decay, which involves the emission of an electron.
During beta decay, a neutron in the Neptunium-239 nucleus is converted into a proton, and an electron (also known as a beta particle) is emitted. The electron carries a negative charge (-1) and is represented by the symbol "e^-" or simply "e". It balances the charge and atomic number in the reaction equation.
The balanced equation for the reaction is:
239/93 Np -> 239/94 Pu + 0/-1 e
So, in summary, the symbol "X" in the reaction 239/93 Np -> 239/94 Pu + X represents an electron (e^-) emitted during the beta decay of Neptunium-239.
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COMPLETE QUESTION
in the reaction 239/93 Np -> 239/94 Pu+X, what does X represent
A. PROTON
B. POSITRON
C. ELECTRON
D. NEUTRON
Which of these is an example of a physical property?
A. Iron combines with oxygen to rust.
B. Potassium reacts in water to form a base.
C. Sodium metal is soft and malleable.
D. Sodium ignites when placed in water.
Answers
Which describes any compound that has at least one element from group 17
A.halide
B.noble gas
C.meltalloid
D.Transition metal
HELP
Answers
Assess It! Question #2: Which is not true about the Law of Conservation of Mass? A: Nothing is created B: The same number of atoms are in both the products and reactants C: New atoms are created when a new substance is formed D: Nothing is destroyed
Answers
Option C) New atoms are created when a new substance is formed is not true about the Law of Conservation of Mass.
The Law of Conservation of Mass states that "Mass can neither be created nor be destroyed". This means that the mass of an object will remain the same, regardless of the changes that occur to its form or composition. The law is a fundamental principle of physics and chemistry and is used to calculate the amount of matter that is present in a given sample.
The same number of atoms are in both the products and reactants as the mass of the reaction is conserved.
Since the same number of atoms are present in both reactants and products, then no new atoms or compounds are created in the process.
Hence, the correct option is C).
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2. What determines the focal length? (1 point)
O the thickness of a lens
O the hardness of a lens
O the curvature of a lens
O the width of a lens
Answers
Answer:
the correct answer would be the curvature of a lens
Determine the molarity of 1.2 mol KCl in 1.1 L of a solution?
Answers
Answer:
1.1 M
General Formulas and Concepts:
Molarity = moles of solute / liters of solutionExplanation:
Step 1: Define variables
1.2 mol KCL
1.1 L of solution
M = unknown
Step 2: Solve for Molarity
Substitute: M = 1.2 mol/1.1 LEvaluate: M = 1.09091Step 3: Check
We are given 2 sig figs. Follow sig fig rules.
1.09091 M ≈ 1.1 M
NO + H2-> N2 + H2O
Balance equation?
Answers
Answer:
2NO + 4H-> N2 + 2 H2O
Explanation:
Both sides must be equal. :)
What is the pH of a solution with an H+ ion concentration of 2.5e-4?
Answers
Answer: pH=-log[H+]
pH=-log(2.5x10^-4)
pH=3.6
Explanation:
The enthalpy of vaporization for methanol is 35.2 kJ/mol. Methanol has a vapor pressure of 1 atm at 64.7 oC. Using the Clausius-Clapeyron equation, what is the vapor pressure for methanol at 55.5 oC? Give your answer in atmospheres, to the third decimal point.
Answers
Answer: 55.5 oC is 0.014 atm (3rd decimal point)
Explanation:
The Clausius-Clapeyron equation is given as:
ln(P2/P1) = -(ΔH_vap/R) * (1/T2 - 1/T1)
where:
P1 = vapor pressure at temperature T1
P2 = vapor pressure at temperature T2
ΔH_vap = enthalpy of vaporization
R = gas constant = 8.314 J/(mol*K)
Converting the enthalpy of vaporization to J/mol:
ΔH_vap = 35.2 kJ/mol = 35,200 J/mol
Converting temperatures to Kelvin:
T1 = 64.7 + 273.15 = 337.85 K
T2 = 55.5 + 273.15 = 328.65 K
Substituting the values into the equation and solving for P2:
ln(P2/1 atm) = -(35,200 J/mol / 8.314 J/(mol*K)) * (1/328.65 K - 1/337.85 K)
ln(P2/1 atm) = -4.231
P2/1 atm = e^(-4.231)
P2 = 0.014 atm
Therefore, the vapor pressure for methanol at 55.5 oC is 0.014 atm, to the third decimal point.
Does the density of a liquid depend on its volume? Write your answer as a CER.
Answers
Answer: Yes
Explanation:
Density of a liquid depend on its volume. This is because Density is mass of liquid divided by volume.
Density is inversely proportional to volume.
As density increases, volume decreases and vice versa. The density for water is 1g/ milliliter but it changes with changes in temperature or there are impurities dissolved in it. Ice is less dense that liquid water and it's the major reason it's float because it's volume is inversely proportional to it's density.
I NEED HELP FAST THIS IS DUE AT 9:00
All atoms of the same ___________ have the same properties
Elements
Compounds
Mixtures
Chemicals
Answers
The Universal Space Agency wants to know the results of your Sim investigation. Write your report to the lead chemist, explaining why drops of liquid water appeared on the outside of the cold, but not the warm, soda can. Use evidence from your investigation in your explanation.
Answers
Answer:
due to warm temperature
Explanation:
Explanation:
There is water present in liquid form instead of liquid nitrogen on the outer side of the can because of the temperature present in the surrounding environment. The temperature around the can is little warm which is favourable for the water but not for the liquid nitrogen. The liquid nitrogen present in liquid state when the temperature of the surrounding is too cold. if it is warm, the liquid nitrogen starts boiling and converts into gaseous state so that's why the warmer temperature is responsible for the presence of water not the liquid nitrogen.
what properties of a natural resource make it useful for humans as a materials or energy source?
Answers
The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.
What are natural resources?The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.
Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.
Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.
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In order to determine the answer to a chemistry problem, a student first converted the given percentages to mole by assuming the sample size was 100 grams. Then the student divide by the smallest mole amount of the elements present. Finally the student used the ratios to write a formula. Which of the following best describes the problem the student likely solved?
a. Determined percent composition
b. None of the above
c. Determining molecular formula
d. Determining empirical formula
Answers
Answer: d. Determining empirical formula
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
Step 1: If percentage are given then we are taking total mass is 100 grams. So, the mass of each element is equal to the percentage given.
Step 2 : convert given masses into moles
Step 3 : For the mole ratio, divide each value of moles by the smallest number of moles calculated
Step 4: The mole ratio gives the empirical formula of the compund.
Is it a spontaneous or non-spontaneous change?
During an exothermic chemical reaction, two moles of gaseous reactants are turned into four moles of gaseous products.
Spontaneous Non-spontaneous
During an endothermic chemical reaction, four moles of gaseous reactants are turned into two moles of gaseous products.
Spontaneous Non-spontaneous
A gas expands without absorbing or releasing heat.
Spontaneous Non-spontaneous
Answers
Formula
RnF3+
(2) Lewis dot structure
Answers
Formation of RnF₃⁺ will nat takes place easily or if it is form then it will decompose easily.
What is the Lewis dot structure?Lewis dot structure of any compound tells about the bonding and outermost electrons present in all the entities present in that compound.
Radon is a noble gas atom and have stable electronic configuration, but still they form radon flouride products due to the high electronegativity of flourine it attracts the lone pair of electrons of radon.
For the formation of compound promotion of 1, 2 or 3 electrons from the 6p orbital to the vaccant 6d orbitals will give rise to 2, 4 or half filled orbitals so they will form only products with odd number of atoms.
Hence RnF₃⁺ will not form any compound.
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Why does Jim say he is not including the location of Treasure Island in chapters 1-3 of Treasure Island?
A. He does not remember where it is.
B. There is still treasure on it.
C. It is too dangerous of a place.
D. He is ashamed of what happened there.
Answers
Jim say that he is not including in the location of Treasure Island because 'it is too dangerous of a place'.
What do you mean by Treasure Island?
Treasure Island is an 1883 adventure novel by Scottish author Robert Louis Stevenson. It tells the story of Jim Hawkins, a young man on a quest to find buried treasure on a tropical island. The novel is regarded as a classic of children's literature, and it is one of the most frequently dramatized novels of all time.
Treasure Island is a fictitious island full of danger and adventure. Jim understands that visiting this island would be dangerous, so he has decided to stay away. He believes it is too dangerous a location to include in his travels.
Hence, option C is correct.
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WHAT IS THE MOLAR MASS FOR AMMONIUM SULFIDE?
A. 59.1g/mol
B.82.2g/mol
C.50.1g/mol
Answers
Answer:
68g/mol
Explanation:
The formula of ammonium sulfide is:
Ammonium sulfide = (NH₄)₂S
The molar mass of a compound is the mass in gram of one mole of the substance. In a compound, it is expressed gram formula mass or gram-molecular weight.
It is determined by the addition of the component atomic masses and then expressed in grams;
Atomic mass of N = 14, H = 1 and S = 32
(NH₄)₂S = 2[14 + 4(1)] + 32 = 36 + 32 = 68g/mol
HELPPPPP
what is the percent yield if the theoretical yield is 73g and the actual yield is 62g?
Answers
The percent yield, given that the theoretical yield is 73 grams and the actual yield is 62 grams, is 84.9%
How do I determine the percentage yield?Percentage yield is defined according to the following formula:
Percentage yield = (Actual yield / Theoretical yield) × 100
From the question given above, the following data were obtained:
Theoretical yield = 73 gramsActual yield = 62 gramsPercentage yield =?Using the above formula, we can obtain the percentage yield as shown below:
Percentage yield = (Actual yield / Theoretical yield) × 100
Percentage yield = (62 / 73) × 100
Percentage yield = 84.9%
Thus, from the above calculation, we can conclude that the percentage yield is 84.9%
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How many silicon atoms are in a piece of glass weighing 6.240
Answers
Assuming that the glass is made entirely of silicon dioxide (SiO2), which is a common component of glass, we can calculate the number of silicon atoms based on the molecular weight of SiO2 and the weight of the glass.
How many silicon atoms are in a piece of glass weighing 6.240?The molecular weight of SiO2 is approximately 60 g/mol. Therefore, 6.240 g of SiO2 corresponds to:
6.240 g SiO2 × (1 mol SiO2/60 g SiO2) = 0.104 mol SiO2
Since each molecule of SiO2 contains one silicon atom, the number of silicon atoms in the piece of glass can be calculated by multiplying the number of moles of SiO2 by Avogadro's number (6.022 × 10^23 atoms/mol):
0.104 mol SiO2 × (6.022 × 10^23 atoms/mol) = 6.26 × 10^22 silicon atoms
Therefore, there are approximately 6.26 × 10^22 silicon atoms in a piece of glass weighing 6.240 g, assuming the glass is made entirely of SiO2.
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Determine the formula mass of each compound
Na₂SO4
Answers
The compound is 142.
Solution:
Mass of Na = 23
Mass of S = 32
Mass of O = 16
Therefore, the molecular mass of Na2SO4
=(23 * 2)+32+(16 * 4)
= 46+32+64
= 142
The mass of a formula is obtained by summing the masses of the individual atoms in the compound's formula. Correct chemical formulas are electrically neutral no net gain or loss of electrons so ions can be considered atoms in chemical formula mass calculations. Weight is a measure of weight acting on the mass.
The sum of the atomic masses of all atoms appearing in the cumulative or simple formula of a compound is called the formula mass. The formula unit of any compound is determined by multiplying the number of moles of a given compound by Avogadro's number. The formula is a weight equal to mass divided by gravitational acceleration. Convert weight measured in pounds to Newtons.
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Double bonds can act as Lewis bases, sharing their electrons with Lewis acids.
A. Use curved arrows to show how the alkene below will react with HCl.
B. Make the ends of your arrows specify the origin and destination of reorganizing electrons.
C. Draw the resulting carbocation.
Answers
Answer:
See explanation and image attached
Explanation:
The reaction between an alkene and a hydrogen halide is an addition reaction. The ends of the arrow in the image attached shows the movement of electrons during the reaction of the alkene shown with HCl.
The carbocation intermediate formed in the reaction is also shown. Since the alkene is symmetrically substituted, only one product is obtained.
hydrogen and oxygen reacts chemically to form water. how much water would form if 14.8 grams of hydrogen reacted with 34.8 grams of oxygen
Answers
The mass of water that can be obtained is 2.2 g of water.
What is the mass of the water?We know that in the case that we have here, we are going to depend on the stoichiometry of the reaction and this is very important in the determination of the amount of the water that can be formed.
Now we can see that the reaction equation can be written from the fact that; \(2H_{2} (g) + O_{2} (g) ---- > 2H_{2} O(g)\). Then we can see that in this kind of chemical reaction we have to apply the stoichiometry.
Number of moles of the hydrogen = 14.8g/2 g/mol = 7.4 moles
Number of moles of oxygen = 34.8 g/32 g/mol = 1.1 moles
Given that 2 moles of hydrogen reacts with 1 mole of oxygen
7.4 moles of hydrogen reacts with 7.4 * 1/2
= 3.7 moles
Hence oxygen is the limiting reactant.
1 mole of oxygen produces 2 moles of water
1.1 moles of oxygen would produce 1.1 * 2/1
= 2.2 moles of water
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