Question

calculate the mass of co2 which contains the same number of molecules as are contained in 40g of oxygen

Answer 1

Solution.

Mass of carbon = 12 u

Mass of oxyegen= 16u

molecular mass of co2= 12+ 2*16

= 12+ 32

= 44 u= 1 mole

Now, molecules in 40g of 6.022* 10^23/44

Answer 2

Answer:

55 g of Co2

Explanation:

1 mole of O2 = 32 g

40 g = 40/32 = 1.25 mole

1.25 mole of Co2 = 44 * 1.25 = 55 g