Question

calculate the number of moles for the following :
52g of Helium
17g of water
22g of carbon dioxide. ​

Answer 1

Answer:

mole = mass in grams/ molecular mass

1) helium - molecular mass - 4.003 g

52 /4,003 = 12.99 mol

2) water - H2O - molecular mass - 18 g

17 /18 = 0,944mol

3) carbon dioxide - CO2 - molecular mass - 44g

22 /44 = 0,5 mol

Answer 2

Explanation:

molecular mass if h2o=18

no.of mol=52/18

= 2.8