The chemical equation for the formation of water is 2H2 +

Chapter 9, Problem 9.1.51

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QUESTION:

The chemical equation for the formation of water is 2H2 + O2 2H2O a. If 3.3 mol O2 are used, how many moles of H2 are needed? b. How many moles O2 must react with excess H2 to form 6.72 mol H2O? c. If you wanted to make 8.12 mol H2O, how many moles of H2 would you need?

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QUESTION:

The chemical equation for the formation of water is 2H2 + O2 2H2O a. If 3.3 mol O2 are used, how many moles of H2 are needed? b. How many moles O2 must react with excess H2 to form 6.72 mol H2O? c. If you wanted to make 8.12 mol H2O, how many moles of H2 would you need?

ANSWER:

Step 1 of 3

a) The balanced chemical equation for the formation of water is

The ratio of dihydrogen and dioxygen in the balanced chemical equation is 2:1

According to the question,

If 3.3 mol of  are used then no. of moles of  are needed are twice the moles of oxygen, i.e.,

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