Question

The number of moles of CO2 which contain 8.0 g of oxygen

are:

A 1.0

B. 4.50

C. 0.50

D. 0.25​

Answer 1

32 g of oxygen is present in 44g of CO2

8g of oxygen is present in (44g/32g)×8g

= 11g of CO2

no of mol of CO2 = 11g/44g/mol

= 0.25mol