Question

S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O

In the above equation how many moles of water can be made when 190.7 grams of HNO3 are consumed?

Answer 1

18.17 g

Step-by-step explanation:

From the coefficients of the equation, we know that.for every 6 moles of nitric acid consumed, 2 moles of water are produced.

Nitric acid has a formula mass of 63.012 g/mol, so 190.7 g is about 190.7/63.012 = 3.0264 mol.

Thus, we need 3.0264(2/6) = 1.0088 mol of water.

Water has a formula mass of 18.015 g/mol, so the answer is (18.015)(1.0088), which is 18.17 g to 4 sf.