CH 8 HW PART 2.pdf - CH 8 HW PART 2 Due 11:59pm on Sunday...

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CH 8 HW PART 2 Due: 11:59pm on Sunday, October 22, 2017 To understand how points are awarded, read the Grading Policy for this assignment. Moles of Reactants and Products Under certain circumstances, carbon dioxide, , can be made to react with hydrogen gas, , to produce methane, , and water vapor, : Part A How many moles of methane are produced when 71.1 of carbon dioxide gas react with excess hydrogen gas? Express your answer with the appropriate units. For example, write the unit moles as mol . Hint 1. How to approach the problem The relative molar amounts of reactants and products in a chemical reaction are determined by their coefficients (the number shown in front of each formula): In this reaction, has a coefficient of 1, has a coefficient of 4, has a coefficient of 1, and has a coefficient of 2. That means that 1 of carbon dioxide will react with 4 of hydrogen gas to produce 1 of methane and 2 of water vapor. Hint 2. Describe the relative molar amounts of carbon dioxide and methane What are the relative amounts (in moles) of carbon dioxide and methane in this reaction? ANSWER: Correct So if you know the number of moles of carbon dioxide that reacted, then you also know the number of moles of methane that were produced. ANSWER: The amount of is the amount of . four times one-quarter twice one-half equal to 71.1 Typesetting math: 89%
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Correct Part B How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 53.6 of water vapor? Express your answer with the appropriate units. For example, write the unit moles as mol . Hint 1. Describe the relative molar amounts of hydrogen and water What are the relative amounts (in moles) of hydrogen gas and water in this reaction? ANSWER: ANSWER: Correct Exercise 8.20 with eText link Chlorine gas reacts with fluorine gas according to the following balanced equation: Part A If the figure represents the amount of fluorine available to react, and assuming that there is more than enough chlorine to react with the above amount of fluorine, which of the following best represents the amount of chlorine trifluoride that would form upon complete reaction of all of the fluorine? The amount of is the amount of . four times one-quarter twice one-half equal to 107 Typesetting math: 89%
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ANSWER: Correct Exercise 8.22 Part A For the reaction, calculate how many moles of the product form when 0.041 of completely reacts. Assume that there is more than enough of the other reactant. Typesetting math: 89%
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Express your answer using two significant figures. ANSWER: Correct Part B For the reaction, calculate how many moles of the product form when 0.030 of completely reacts. Assume that there is more than enough of the other reactant. Express your answer using two significant figures. ANSWER: Correct Part C For the reaction, calculate how many moles of the product form when 0.044 of completely reacts.
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