Question

(i) Calculate the number of mole of the following:
(a)90 gms of H2O
(b)88 gms of CO​

Answer 1

Answer:

a) 5 moles

b)22 / 7 moles

Explanation:

no. of moles = given mass / molar mass

molar mass of h = 1

molar mass of o =16

molar mass of c=12

molar mass of h2o=2+16=18

molar mass of co= 12+16=28