Question

Number of electrons present in 2.2 gram of carbon dioxide ( CO2)

Answer 1

6.625×10²³

Explanation:

No. of moles of CO2 = 2.2÷44

No. of molecules = 2.2÷44×6.023×10²³

1 molecule = 22 electrons

Therefore, total no. of electrons = 2.2÷44×6.023×10²³×22

= 6.625×10²³

Answer 2

6.6253x10°23

Explanation:

Available:Required

Mass : Electron

2.2g : x

44g : 22NA

by cross multiplication,we get

x = 2.2 x 22 NA ÷ 44

x= 6.6253 x 10'23 .