(b) Calculate the temperature of the product mixture if the methane and air are both at an initial temperature of 0.0°C. Assume a stoichiometric ratio of methane to oxygen from the air, with air being 21% O₂ by volume (c of CO₂ = 57.2 J/mol·K; c of H₂O(g) = 36.0 J/mol·K; c of N₂ = 30.5 J/mol·K).

Answers

Answer 1

Temperature of the product mixture is 10314.79 K

Given Data,

 Mass = 37.196 g

 Temperature = - 0.2°C

Given reaction is shown as:

 CH₄ + 2O₂ →CO₂ + 2H₂O

Hence,

Moles of CH₄ burned = Mass of  CH₄/ Molar mass of  CH₄

                                   = 37.196g/16.0491g

                                   = 2.32 mol

Now,

moles of O₂ needed = 2.32 × 2

                                   = 4.64 moles

Moles of CO₂ produced = 2.32 moles

Moles of H₂O produced = 2.32 × 2

                                         = 4.64 moles

Now,

 Given

 Formation of CO₂= 393.5 × 10³ J/m

  Formation of H₂O = 285.8×10³ J/m

Hence,

 Heat absorbed by methane + heat absorbed by oxygen =  Formation of     CO₂+Formation of H₂O

   Now,

2.32×35.14 ×dT + 4.64×29.214×dT = 2.32× 393.5 × 10³ + 4.64× 285.8×10³

 81.52dT+135.55dT = 2239032

dT = 10314.79 K

Thus from the above conclusion we can say that ,Temperature of the product mixture is 10314.79 K.

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Related Questions

bronze is an alloy, or mixture, of copper and tin. the alloy initially contains kg copper and kg tin. suppose you change the amount of copper by kg (i.e., add copper if is positive but remove copper if is negative). the concentration of copper in the new alloy is a function of :

Answers

The concentration of copper in the new alloy is a function of the change in the amount of copper added or removed (i.e., the value of kg).

When copper is added, the proportion of copper in the alloy increases, resulting in a higher concentration of copper. Conversely, when copper is removed, the proportion of tin in the alloy increases, resulting in a lower concentration of copper.
The concentration of copper in the new alloy depends on the amount of copper added or removed.

This is an important factor to consider when creating bronze alloys for specific purposes, as the concentration of copper can affect the properties and characteristics of the alloy.

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The ____number can vary among atoms of the same element.

Answers

Answer:

Mass number

Explanation:

All atoms of the same element have the same number of protons, but some may have different numbers of neutrons, which would cause a different mass number

Answer:

The answer is mass number

If the metal from problem 4 was initially at room temperature (22 0 C), what would the final temperature of the metal be? You know that you add 120 joules of energy to the metal. What change in temperature would you observe Q = is energy as Heat, 120 Joulesm = mass in grams, 5.0 gramsc = is the specific heat capacity, 0.385 J/g°CΔT = the change in temperature, calculated as Final Temperature - Initial T120 = 5 * 0.385 * T120 = 1.925TT = 62°C of change in temperature

Answers

The question is mostly solved. The definition of heat is used for this problem which tells us:

\(Q=mCp\Delta T\)

Where,

Q is the heat added to the system, 120 J

m is the mass of the metal, 5.0 g

Cp is the specific heat of the metal, 0.385J/g°C

dT is the change of temperature:

\(\Delta T=T_2-T_1\)

T2 is the final temperature, unknown

T1 is the initial temperature, 22°C

We clear the final temperature from the equation:

\(\begin{gathered} Q=mCp(T_2-T_1) \\ Q=mCpT_2-mCpT_1 \\ T_2=\frac{Q+mCpT_1}{mCp} \end{gathered}\)

Now, we replace the known data:

\(T_2=\frac{120J+5.0g\times0.385\frac{J}{g\degree C}\times22\degree C}{5.0g\times0.385\frac{J}{g\degree C}}\)\(\begin{gathered} T_2=\frac{120+5.0\times0.385\times22}{5.0\times0.385}\degree C \\ T_2=84\degree C \end{gathered}\)

Answer:

The final temperature of the metal will be 84°C

The change in the temperature will be 84°C-22°C=62°C

10 grams of sodium hydroxide, NaOH, is dissolved in 0.25 liters of solution. Determine the molarity (M)

Answers

Answer:

1M

Explanation:

The molarity of a substance is defined as the number of moles of the substance divided by how many liters the solution is. NaOH has a molar mass of about 40 grams, meaning that 10 grams of it would be 0.25 moles. 0.25/0.25= a molarity of 1.

Hope this helps!

0.10 moles of sodium sulfate is dissolved into 12 mL of solution. What is the molar concentration of the solution?
Your answer should have two significant figures (round your answer to one decimal place).

Answers

the molar concentration should be atleast 5mL off the solution since its disolved

Answer:

8.3

Explanation:

Convert mL to L.

12 mL×1 L1000 mL=0.012 L

Solve for molarity.

Molarity=moles of solute

liters of solution=0.10 mol0.012 L=8.3 M

Can someone help me ?

Can someone help me ?

Answers

Answer:

Tetrachlorodiborane or Diboron tetrachloride

Answer: the answer is A

Explanation:

Help me with my chemistry work

Help me with my chemistry work

Answers

why chemistry chemistry sucks

NH_3 + H_2O <-> NH_4(+) + OH(-)
Given the dissociation equation for ammonia, would you predict ammonia is a good conductor of electricity? Explain in terms of ions present in solution and level of dissociation. .

Answers

\((NH_4(+))\) No, ammonia is not a good conductor of electricity due to its low level of dissociation and the resulting low concentration of ions in the solution.

Ammonia (NH3) is not a good conductor of electricity in aqueous solution. In the dissociation equation \(NH_3 + H_2O < - > NH_4(+) + OH(-)\) , it can be observed that ammonia (\(NH3\)) reacts with water (H2O) to form ammonium ions \((NH_4(+))\) and hydroxide ions\((OH(-))\).Ammonium ions \((NH_4(+))\) and hydroxide ions \((OH(-))\)are present in the solution and can conduct electricity. However, the level of dissociation of ammonia is relatively low. Ammonia molecules tend to stay intact rather than dissociating into ions. As a result, the concentration of ions in the solution is low, leading to a poor conductivity of electricity.In order for a substance to be a good conductor of electricity, it requires a high concentration of ions and a significant level of dissociation. In the case of ammonia, the limited dissociation hinders the formation of a substantial number of ions in the solution, thereby reducing its conductivity.

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(Help please!! important test!!!) What property of matter are you measuring if you are using a triple beam balance? (2 points)

volume,
gravity,
mass, or
size

Answers

Answer:

mass

Explanation:

The triple beam balance is an instrument used to measure mass very precisely.

Why can’t you split an element in half?

Answers

Answer:

It depends on the atom, or more specifically, on the size of its nucleus. There is a competition between the electrical repulsion of the protons (that drives the nucleus apart) and the attraction of the protons and neutrons (due to chromodynamics). For nuclei above a certain size, the repulsion tends to win

Explanation:

hope this helps

A buffer is made by dissolving HC2H3O2 and NaC2H3O2 In water.
a) Write an equation that shows how this buffer neutralise added acid
b) Write an equation that shows how this buffer neutralises added base

Answers

A buffer is made by dissolving HC₂H₃O₂ and NaC₂H₃O₂ In water. The equation that shows how this buffer neutralise  acid added is

H⁺ + CH₃COO⁻ ⇄ CH₃COOH. The equation that shows how this buffer neutralises added base is H⁺ +OH⁻  ⇄ H₂O

Processes of dissociation in the solution containing weak CH₃COOH acid and its salt:

CH₃COOH ⇄ H⁺ + CH₃COO⁻                   Ka = 1.8 X 10⁻⁵

CH₃COONa ⇄ Na⁺ + CH₃COO⁻

At addition of acid in solution ions of hydrogen comunicate in weak acid:

H⁺ + CH₃COO⁻ ⇄ CH₃COOH.

At addition of the basis in solution ions of hydroxide comunicate in weak electrolyte - water: H⁺ +OH⁻  ⇄ H₂O

Therefore, the equation that shows how this buffer neutralise  acid added is H⁺ + CH₃COO⁻ ⇄ CH₃COOH. The equation that shows how this buffer neutralises base added  is H⁺ +OH⁻  ⇄ H₂O

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identify the correct statements regarding the use of stable oxygen isotopes in reconstructing ancient climates.

Answers

The use of stable oxygen isotopes in reconstructing ancient climates is a powerful tool that has contributed greatly to our understanding of past environmental changes. However, it is important to consider other factors that may influence the isotopic composition of precipitation and to use multiple lines of evidence when making interpretations about past climate conditions.

Stable oxygen isotopes (specifically, oxygen-18 and oxygen-16) are commonly used in reconstructing ancient climates because they can provide information about temperature and precipitation patterns.

1) Oxygen-18 is less abundant than oxygen-16 and has a slightly higher atomic mass. This means that it is preferentially incorporated into precipitation that forms at colder temperatures, such as snow and ice.

2) The ratio of oxygen-18 to oxygen-16 in carbonate minerals, such as those found in shells and corals, can also be used to reconstruct past temperatures. This is because the incorporation of oxygen isotopes into these minerals is influenced by both temperature and the isotopic composition of the water in which the organism lived.

3) Oxygen isotopes can also provide information about past precipitation patterns. For example, in regions where the dominant source of precipitation is from ocean evaporation, the oxygen isotope composition of precipitation can reflect the isotopic composition of the ocean water.

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IM STUCK ON THIS ONE.

a. 104 grams of copper with the temperature of 98.9 degrees celsius. is placed into a colorimeter with 63 grams of water and with the calorimeter is 2 grams. the initial temperature of the water is 22 degrees celsius. what would be the final temperature.

b. determine the temperature change of the copper? show your work

c. determine the temperature change of the water? show your work

d. If the specific heat capacity of water is 4.19 j/g celsius, calculate the energy absored by the water.show your work

e. determine the experimental specific heat capacity of the copper.show your work.

Answers

a. The final temperature is 29.9°C.

b. The temperature change of the copper is 69°C.

c. The temperature change of the water is 1.7°C.

d. The energy absorbed by the water is 1892.67 J

Copper Calorimeter Calculations

a. To find the final temperature, we can use the principle of conservation of energy, which states that the heat lost by the copper will be gained by the water and calorimeter. The equation we can use is:

heat lost by copper = heat gained by water + heat gained by calorimeter

The heat lost by the copper can be calculated using the equation:

Q = mcΔT

where Q is the heat lost, m is the mass of copper, c is the specific heat capacity of copper, and ΔT is the change in temperature.

Q = (104 g) * (0.385 J/g°C) * (98.9°C - T)

The heat gained by the water and calorimeter can be calculated using the equation:

Q = (m_water + m_calorimeter) * c_water * ΔT

where m_water is the mass of water, m_calorimeter is the mass of the calorimeter, c_water is the specific heat capacity of water, and ΔT is the change in temperature.

Q = (63 g + 2 g) * (4.19 J/g°C) * (T - 22°C)

Setting the two equations equal to each other and solving for T, we get:

(104 g) * (0.385 J/g°C) * (98.9°C - T) = (63 g + 2 g) * (4.19 J/g°C) * (T - 22°C)

Simplifying and solving for T, we get:

T = 29.9°C

Therefore, the final temperature is 29.9°C.

b. The temperature change of the copper can be calculated using the equation:

ΔT = (Q / (m * c))

where Q is the heat lost by the copper, m is the mass of copper, and c is the specific heat capacity of copper.

ΔT = (104 g) * (0.385 J/g°C) * (98.9°C - 29.9°C) / (104 g * 0.385 J/g°C)

ΔT = 69°C

Therefore, the temperature change of the copper is 69°C.

c. The temperature change of the water can be calculated using the equation:

ΔT = (Q / ((m_water + m_calorimeter) * c_water))

where Q is the heat gained by the water and calorimeter, m_water is the mass of water, m_calorimeter is the mass of the calorimeter, and c_water is the specific heat capacity of water.

ΔT = ((63 g + 2 g) * (4.19 J/g°C) * (29.9°C - 22°C)) / ((63 g + 2 g) * (4.19 J/g°C))

ΔT = 1.7°C

Therefore, the temperature change of the water is 1.7°C.

d. The energy absorbed by the water can be calculated using the equation:

Q = (m_water * c_water * ΔT)

where m_water is the mass of water, c_water is the specific heat capacity of water, and ΔT is the temperature change of the water.

Q = (63 g) * (4.19 J/g°C) * (29.9°C - 22°C)

Q = 1892.67 J

Therefore, the energy absorbed by the water is 1892.67 J.

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pentanitrogen heptachloride formula

Answers

Answer:

Explanation:

this is the answer hope it helps!(:

pentanitrogen heptachloride formula

The chemical formula of pentanitrogen heptachloride is N₅Cl₇ as it has 5 nitrogen atoms and 7 chlorine atoms.

What is chemical formula?

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

There are four types of chemical formula:

1)empirical formula

2) structural formula

3)condensed formula

4)molecular formula

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Use the reaction to answer the question.CH4 + 202 CO₂ + 2H₂O-H-C: 412 kJ/molO=0: 496 kJ/molC-O: 743 kJ/molO-H: 463 kJ/molWhat is the total energy of the reaction?

Use the reaction to answer the question.CH4 + 202 CO + 2HO-H-C: 412 kJ/molO=0: 496 kJ/molC-O: 743 kJ/molO-H:

Answers

Answer:

The total energy reaction would be -698 kJ/mol.

Explanation:

The formula to calculate the enthalpy change of a reaction is the following:

\(\Delta H=\Sigma Bond\text{ energy reactants-}\Sigma Bond\text{ energy products.}\)

Let's calculate the bond energy for each reactant:

- CH4: As we have 4 bonds of H - C, the bond energy is 4 x 412 kJ/mol = 1648 kJ/mol.

- O2: As we have 1 bond of O = O, but we have 2 moles of O2, we just multiply the bond energy of O = O by two: 2 x 496 kJ/mol = 992 kJ/mol.

Now, let's calculate the bond energy for each product:

- CO2: As we have 2 bonds of C - O (O - C - O), the bond energy would be 2 x 743 kJ/mol = 1486 kJ/mol.

- H2O: As we have 2 bonds of O - H (O - H - O), and 2 moles of H2O, we multiply the bond energy by the number of bonds, and the number of moles: 2 x 2 x 463 kJ/mol = 1852 kJ/mol.

Finally, we just apply the given formula, like this:

\(\begin{gathered} \Delta H=(1648+992)\frac{kJ}{mol}-(1486+1852)\frac{kJ}{mol}, \\ \Delta H=(2640-3338)\frac{kJ}{mol}, \\ \Delta H=-698\frac{kJ}{mol}. \end{gathered}\)

The total energy reaction would be -698 kJ/mol.

HELP PLEASEEEEE HURRY!!

HELP PLEASEEEEE HURRY!!

Answers

Answer:

The answer is c

Explain anaerobic respiration with yeast in your own words

Answers

Answer:

Is breaking down of food substances in the abscence of Oxygen

which of the following expressions reperesents the magnitude of the magnetic field at point r?

Answers

Hi! To determine which expression represents the magnitude of the magnetic field at point r, please provide the list of expressions to choose from. Once you provide the options, I will be able to guide you through the process of finding the correct expression.

Which statement best describes a chemical change?
O A. A substance changes size or phase.
O B. Atoms are made and destroyed.
O C. The nuclei of atoms are rearranged.
O D. Substances form new substances.

Which statement best describes a chemical change?O A. A substance changes size or phase.O B. Atoms are

Answers

A. A substance changes size or phase.
D is probably your best bet, at least from what I know.

. if a cell culture has 3 x 105 cells per ml , and the culture flasks hold 75 ml of culture each and you have 12 flasks, how many cells are there in total?

Answers

If a cell culture has 3 x 105 cells per ml , and the culture flasks hold 75 ml of culture each and you have 12 flasks, The bond between K⁺ and Cl⁻ ions is an ionic bond.

What is ionic bond?

The main contact that takes place in ionic compounds is called ionic bonding, and it involves the electrostatic attraction between two atoms or ions with dramatically differing electronegativities. Along with covalent and metallic bonds, it is one of the most prevalent types of bonds. Ions are atoms, or collections of atoms, that have an electrical charge. Ions with a negative charge are produced by gaining electrons in atoms (called anions). Ions with a positive charge are created when atoms lose their electrons (called cations).

Electrovalence, as opposed to covalence, is the name for this transfer of electrons. The cation is a metal atom in the most straightforward scenario, while the anion is a nonmetal atom, however these ions can have more complex chemical compositions.

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Read The Pros and Cons of Plastic to explore some of the useful properties of plastics. Which properties of plastics allow them to be solutions to many complex problems in the world

Answers

Plastics have many useful properties that allow them to be solutions to complex problems. Some of these properties include flexibility, durability, and lightweight.

These properties make plastics suitable for a wide range of applications. For example, their flexibility allows them to be molded into various shapes, making them versatile for different products.

Their durability ensures that they can withstand wear and tear, making them long-lasting and reliable. Additionally, their lightweight nature makes them easy to transport and handle.

These properties of plastics make them ideal for solving complex problems in areas such as packaging, construction, healthcare, and transportation.

In summary, the flexibility, durability, and lightweight properties of plastics make them valuable solutions to many complex problems in the world.

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describe two things that happen to the particles of a substance when they are heated

Answers

Answer:

With an increase in temperature, the particles move faster as they gain kinetic energy, resulting in increased collision rates and an increased rate of diffusion.

Answer:

Increased collision rates and an increased rate of diffusion

Explanation:

When particles are heated up, space is being created. The atoms started to get "overly excited" and started to move faster than they usually do. When this happens, energy is released in the form of heat, light or etc. Because of this, kinetic energy increases and atoms colliding with each other happens more often. Hence with an increase in temperature, the particles move faster as they gain kinetic energy, resulting in increased collision rates and an increased rate of diffusion.

Gravity is best described as the attractive force___

A. that acts between magnets and iron
B. that acts between any two objects
C. that does not exist in space
D. hat does not affect orbiting satellites.

Correct answer- 5 star

Answers

Gravity is nest described as the attractive force that acts between any two objects on earth

Explanation:-

Gravity was found by Sir Eizak NewtonIt has formula given by

\(\\ \rm\Rrightarrow F=G\dfrac{Mm}{r^2}\)

B.that acts between any two objects

23. What is the molarity of NO3- in each solution?

a. 0.150 M KNO3
b. 0.150 M Ca(NO3)2
c. 0.150 M Al(NO3)3

Answers

Answer:

Explanation:

A) 0.150

B) 0.300

C) 0.450

hope it helps:)

What was the significance of Daniel Burham’s Plan of Chicago?

Answers

It became the model for the Chicago income and property tax program. He used this plan to avoid prosecution for the Chicago fire. This contest-winning design opened Chicago streets to new forms of transportation.

nitrogen and oxygen can react to form nitrite oxide gas. N2(g)+O2(g) arrow 2NO(g) delta h reaction = 180.6kj. if 2976 kj of heat is absorbed by the reaction how many moles of NO can be produced

Answers

The balanced equation for the reaction is N2(g) + O2(g) → 2NO(g).

The given value for the enthalpy change of the reaction is ΔH = 180.6 kJ. This value represents the heat released per mole of N2 reacted.

To determine the number of moles of NO produced, we need to calculate the moles of N2 reacted. Since the reaction is exothermic, the heat absorbed by the reaction is negative (-2976 kJ). However, it is not physically possible to have a negative number of moles. Therefore, we can conclude that no NO is produced in this case because the heat absorbed is insufficient to drive the reaction.

Using the equation ΔH = -2976 kJ/mol N2, we can set up a proportion:

180.6 kJ/1 mol N2 = -2976 kJ/x mol N2

Solving for x, we find:

x = (-2976 kJ * 1 mol N2) / (180.6 kJ) ≈ -16.46 mol N2

Since the reaction produces 2 moles of NO for every mole of N2, the number of moles of NO produced is twice the number of moles of N2:

Moles of NO = 2 * (-16.46 mol) ≈ -32.92 mol

The given reaction is N2(g) + O2(g) → 2NO(g), and the enthalpy change of the reaction is ΔH = 180.6 kJ. If the reaction absorbs 2976 kJ of heat, the number of moles of NO that can be produced can be calculated. By setting up a proportion, we find that approximately -16.46 moles of N2 are reacted. Since the reaction produces 2 moles of NO for every mole of N2, the calculated moles of NO would be approximately -32.92. However, negative moles are not physically possible, indicating that no NO can be produced in this case due to insufficient heat absorbed by the reaction.

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What does it mean if something is insoluble?
A. It releases a gas upon reacting.
B. It will not dissolve in water.
C. It exists in a liquid state.
D. It is not reactive,

Answers

Answer:

It will not dissolve in water.

Explanation:

You're welcome

If something is insoluble it means that it will not dissolve in water. Therefore, option B is correct.

What is solubility?

Solubility can be defined as the maximum amount of Solute that can dissolve in a known solvent at a particular temperature. By changing the temperature of the solution, we can increase the solubility of a substance. Sparingly soluble solids or liquids can be fully liquified by increasing the temperature.

Solubility depends on the nature of the given solute and the solvent. Substances such as sugar, NaCl, etc dissolve in water while substances such as naphthalene can not dissolve in water.

An insoluble substance can be defined as a substance or solid that will not dissolve in a solvent even after mixing such as sand. For example, Sand, Stones, Oil, Flour, and wax. Examples, of soluble things, are Salt, Sugar, Vinegar, Coffee, and Lemon Juice.

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how many grams of sodium hydroxide are required to dissolve in 232 g of water to make a 2.88 m solution

Answers

Grams of Sodium hydroxide : 26.72 g

Further explanation

Molality shows the number of moles dissolved in every 1000 grams of solvent.

m = n. (1000 / p)

m = Molality

n = Number of moles of solute

p = Solvent mass (gram)

Can be written :

\(\tt m=\dfrac{mol~solute}{kg~solvent}\)

mol solute(NaOH)

m=2.88

kg solvent(water)=232 g=0.232 kg

\(\tt mol~solute=m\times kg~solvent\\\\mol~solute=2.88\times 0.232=0.668\)

mass of NaOH

\(\tt mass=mol\times MW\\\\mass=0.668\times 40~g/mol=26.72~g\)

Zn + 2HCl -> ZnCl2 + H2
Zn; 65.38 g/mol

A 3.79 L container can hold 0.15 moles H2 gas. What mass of Zn is required to generate 0.15 mol H2

Answers

Taking into account the reaction stoichiometry, the mass of Zn required to generate 0.15 mol of H₂ is 9.807 grams.

Reaction stoichiometry

In first place, the balanced reaction is:

Zn + 2 HCl  → ZnCl₂ + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Zn: 1 moleHCl: 2 moles ZnCl₂: 1 moleH₂: 1 mole

The molar mass of the compounds is:

Zn: 65.38 g/moleHCl: 36.45 g/moleZnCl₂: 136.28 g/moleH₂: 2 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Zn: 1 mole ×65.38 g/mole= 65.38 gramsHCl: 2 moles ×36.45 g/mole= 72.9 gramsZnCl₂: 1 mole ×136.28 g/mole= 136.28 gramsH₂: 1 mole ×2 g/mole= 2 grams

Mass of Zn required

The following rule of three can be applied: If by reaction stoichiometry 1 mole of H₂ is generated by 65.38 grams of Zn, 0.15 mole of H₂ is generated by how much mass of Zn?

mass of Zn= (0.15 mole of H₂× 65.38 grams of Zn)÷ 1 mole of H₂

mass of Zn= 9.807 grams

Finally, a mass of 9.807 grams of Zn are required.

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does The Bohr model of the atom correctly predicts the energy levels of the hydrogen atom, which has a single electron.

Answers

Answer:False. The Bohr model correctly predicts energy levels of hydrogen and hydrogen-like atoms.

Explanation:

Other Questions
The client is exercising. the nurse understands that exercise has what effect on the body? select all that apply. 1) The value, V, in dollars, of an antique solid wood dining set t years after it is purchased can be modelled by the function. v(t)=5500+6t^3/ 0.002t^2 +1 , t 0 At what rate is the value of the dining set changing at exactly 10 years after its purchase? Explain the meaning of this result using rate of change2) Find the equation of the tangent line (in y = mx + b form) to the graph of the function f(x) = sin(x) + 1 at x = rad which statements best describes david mcclelland's acquired needs theory? How was the environment negatively affected by boom-bust cycles? For the Decay 121 Sn 121 Sn + Y 121 Sn" (1" 2 121 Sn (I" = 5 2 The possible transitions are: 0 A M2, E3, M4, E5, M6, E7 B. E2, E3,E4, MS, M6, M7 CM2 and E3 D.E2, M3, E4, M5, E6, M7 T/F; The viewWillAppear method executes anytime a View is about to become active. So far this year, the average monthly revenue at the Newport Times is $63,886. That is 15%less than the monthly average was last year. What was the average last year? What are the factors that Thomas identified in the Social Relational Model? In what way was the recreation industry in the regionsimilar to farming, ranching, and mining in earlier times? They wereallsimilar because Before 509 B.C., a king ruled Rome. Then, the city established the Roman Republic with power divided among 3 branches of government. Why do you think the Romans wanted to govern themselves in this way? Manuel bought a new deep fryer. The regular price of the deep fryer was $235.50. He bought it on sale with a 20% discount. Sales tax of 8% is applied to the discounted total. What was the sale price with tax of Manuelis air fryer to the nearest cent? Solve the equation for x do not include "x=" in your answer -2+/3x-2=6 Find the area of the green shaded sector of the circle. Show all of your work. Write your answer in terms of pi. A 15-cm 20-cm printed circuit board whose components are not allowed to come into direct contact with air for reliability reasons is to be cooled by passing cool air through a 20-cm-long channel of rectangular cross section 0.2 cm 14 cm drilled into the board. The heat generated by the electronic components is conducted across the thin layer of the board to the channel, where it is removed by air that enters the channel at 15C. The heat flux at the top surface of the channel can be considered to be uniform, and heat transfer through other surfaces is negligible. If the velocity of the air at the inlet of the channel is not to exceed 4 m/s and the surface temperature of the channel is to remain under 50C, determine the maximum total power of the electronic components that can safely be mounted on this circuit board. As a first approximation, assume flow is fully developed in the channel. Evaluate properties of air at a bulk mean temperature of 25C. Is this a good assumption? Sodium-24 has a half-life of 14.8 hours. How much of a 734.7 mg sodium-24 sample will remain after 3.7 days? mass remaining: mg What happen to a comet as it get close to the sunA.it forms long tails made of gas and dust b.BrightenC.it explodes D.its melt Or dissapearI need the answer Now Pls answer it quickly asap For the safety acronym see it, what does the s stand for? Mario Gillespie owns 200 shares of Asset InvestmentCorporation. He paid $32.75 per share. Asset Investmentpays a $5.00 per share dividend.a. What is the total annual dividend?b. What is the annual yield? solution to 8n is less than72 you need to buy some filing cabinets. you know that cabinet x costs $10 per unit, requires 6 square feet of floor space, and holds 8 cubic feet of files. cabinet y costs $20 per unit, requires 8 square feet of floor space, and holds 12 cubic feet of files. you have been given $140 for this purchase, though you don't have to spend that much. the office has room for no more than 72 square feet of cabinets. how many of which model should you buy, in order to maximize storage volume (cubic feet)