Question

34. The number of moles of CO2 which contain 8.0 g of oxygen is:
A. 0.25
B. 0.50
C. 0.75
D. 1.0
​

Answer 1

to find number of mole the formula is

given mass/atomic,molecular, formula mass

Explanation:

given mass is 8

molar mass of CO2 is 44

so in this case we can say that 8/44 which is 0.1818181818181