Question

calculate the mass in grams of 0.8 mole of Co2.

Answer 1

mole = weight/molecular weight
0.8=weight/44
wwight= 44×0.8 = 35.2gm

Answer 2

The mass of 0.8 moles of carbon dioxide is 35.2 grams.

Given: 0.8 moles of carbon dioxide.

To find: We have to find the mass.

Solution:

The mass of the oxygen atom is 16 and the mass of the carbon atom is 12.

Thus, the mass of carbon dioxide will be-

$12 + 16 \times2 \\ = 44$

The mass of carbon dioxide is 44 grams.

1 mole of carbon dioxide has a mass of 44 grams.

0.8 moles of carbon dioxide will have a mass-

$44 \times 0.8 \\ = 35.2$

The mass is 35.2

So, the mass of 0.8 moles of carbon dioxide is 35.2 grams.