Question

which of the following contain the same number of molecules as 9 g of water?
a-14 g of nitrogen gas
b-32 g of oxygen gas
c-44 g of CO2 gas

Answer 1

Answer:

a

Explanation:

9 g of water is 9 g/ 18 g/mol = 0.5mol

a) 14 g of N2 gas is 14 g/ 28 g/mol = 0.5 mol

b) 32 g of gas is 32 g/ 32 g/mol = 1 mol