Question

The molar mass of carbon dioxide (CO2) is 44.01 g/mol. The molar mass of water (H2O) is 18.01 g/mol. A reaction uses 528 g of CO2. How many moles of water are used in this reaction?

Answer 1

A - 12.0

Step-by-step explanation:

Answer 2

CO₂ + H₂O -------> H₂CO₃

moles of CO₂ =
`(MASS of Carbon)/( MOLAR MASS)`

=
`(528 g)/(44.01 g / mol)`

= 11.997 mol

mole ratio of CO₂ : H₂O = 1 : 1

∴ moles of H₂O = (`11.997 mol ) * 1
= 11.997 mol
≈ 12 mol