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Question

1.) S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2O

In the above equation, how many grams of water can be made when 17.7 moles of HNO3 are consumed?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Nitrogen	14
Sulfur	32
Oxygen	16

2.) 3 Cu + 8HNO3 → 3 Cu(NO3)2   + 2 NO + 4 H2O

In the above equation, how many grams of water can be made when 18 moles of HNO3 are consumed?

 

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Nitrogen	14
Copper	63.5
Oxygen	16

Answer 1

Standard stoichiometry, using mole ratios from the balanced reactions:

1) (17.7 mol HNO₃) * (2 mol H₂O /6 mol HNO₃) * (18g H₂O /1 mol H₂O) = 106.2 g H₂O.

2) (18 mol HNO₃) * (4 mol H₂O /8 mol HNO₃) * (18g H₂O /1 mol H₂O) = 162.0 g H₂O.