Question

a flask contains 6.6g of carbon dioxide calculate (c=12,o=16)
1. the no. of moles of carbon dioxide present in the flask ​

Answer 1

The no. of moles of carbon dioxide is 90.3×10²¹

Explanation:

Total mass of CO₂=12+2×16

                               ⇒12+32

                                ⇒44

      44 g of carbon dioxide contain 6.023× 10²³ mol of carbon dioxide

 then,6.6 g of carbon dioxide contain $\frac{6.023\times10^2^3 \times6.6}{44}$

                                                             ⇒90.3×10²¹