Question

calculate the number of moles in 18 gram of Oxygen gas and 12 gram of carbon dioxide gas​

Answer 1

Answer:

firstly find molecular mass of O2 i.e. 32u

moles = given mass / molecular mass

moles = 18/32

moles = 0.5625

and

the molecular mass of CO2 is 44u

moles = given mass / molecular mass

moles = 12/44

moles = 0.27

Answer 2

Answer:

1.18/32=0.5625 , 2. 12/44 = 0.2727

Explanation: