Question

How many molecules are in 7 moles of carbon dioxide molecules?​

Answer 1

• Atomic mass of
  `\sf CO_(2)` -

`\sf \implies 12 + ( 16* 2) \\`

`\sf \implies 12 + 32 \\`

`\sf \implies 44 \\`

That means one mole of
`\sf CO_(2)`has a mass of 44 g.

1 mole of carbon dioxide is equal to
`\sf 6.02 * 10^(23)\\` molecules of carbon dioxide.Then, 7 moles is equal to -

`\sf \implies 7* 6.02* 10^(23) molecules \\`

`\sf \implies 4.214 * 10^(24) \\`

Answer 2

There are 4.2x1024 molecules in 7 moles of CO2