How many moles of molecules are in 40g of H2O?

Question

Ross Nichols

Chemistry

5 October, 19:24

How many moles of molecules are in 40g of H2O?

+4

Answers (2)

Know the Answer?

Emmanuel Christian · Answer 1

Molecular mass of H2O is: 16+2*1=18

so moles of 40g of H2O is: 40/18=2.22

Adelaide Mack · Answer 2

The question seems to be confusing but what I understood is that we are asked the number of moles for 40 g of H2O. The molar mass of H2O is the some of the atomic masses of the elements involved which would be 18.02 g/mol

40 g H2O (1 mol / 18.02 g) = 2.22 mol H2O

Hope this answers the question. Have a nice day.