Question

A runner weighs 560 N (about 130 lb), and 74% of this weight is water.

(a) How many moles of water are in the runner's body?
moles

(b) How many water molecules (H2O) are there?
molecules



I was able to get part (a), but I'm not sure how to get part (b)

Answer 1

multiply the number of moles by avagradro's number.

Answer 2

I'm getting 1.415*10^27, but my homework is telling me its wrong. Isn't Avogadro's number 6.022*10^23