Chemistry Help Please

Question

S   +   6 HNO₃ →  H₂SO₄  +  6 NO₂  +   2 H₂O

In the above equation, how many grams of water can be made when 12.8 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

Answer 1

Hi Brooks (aka Abygail S.?)

A lot of these same questions have been asked previously by one or another posters. They are NOT difficult, so you should learn how to do them yourself. They all pretty much involve the same concepts.

Covert grams to moles and moles to grams. Use the mole ratios in the balanced equation. That's it!

S   +   6HNO₃ ==> H₂SO₄  +  6NO₂  +   2H₂O ... balanced equation

molar mass H₂O = 2x1 + 16 = 18 g / mol

12.8 mols HNO₃ x 2 mols H₂O / 6 mols HNO₃ x 18 g H₂O / mol H₂O = 76.8 g H₂O

See also: https://www.wyzant.com/resources/answers/880647/s-6-hno3-h2so4-6-no2-2-h2o