Question

How many CO2 molecules are there in 5 moles of CO2?​

Answer 1

1 mole of carbon dioxide consist of 6.023 x10^23 molecules. Hence 5 mole of carbon dioxide consists of 3.01 x10^24 molecules.

Answer 2

3.011 ×
`10^(24)` molecules

Step-by-step explanation:

Basics:

• 1 mole of Carbon (C) = 6.022 ×
  `10^(23)` atoms

• 1 mole of Oxygen (O) = 6.022 ×
  `10^(23)` atoms

• 1 mole of O2 = 6.022 ×
  `10^(23)` molecules = 12.044 ×
  `10^(23)` atoms [Since, each molecule of O2 contains 2 atoms of O]
• 1 mole of CO2 = 6.022 ×
  `10^(23)` molecules = 18.066 ×
  `10^(23)` atoms [Since, each molecule of CO2 contains 2 atoms of O and 1 atom of C]

To find:

• No. of molecules in 5 moles of CO2

Solution:

As we know that,

1 mole of Carbon Dioxide (CO2) includes, 6.022 ×
`10^(23)` molecules

Also has, 18.066 ×
`10^(23)` atoms in it.

Then,

5 moles of CO2 will have = 5 × 6.022 ×
`10^(23)` molecules

= 30.11 ×
`10^(23)` molecules OR 3.011 ×
`10^(24)` molecules

And hence, it has 90.33 ×
`10^(23)` atoms present in it.

Hence,

The number of molecules in 5 moles of CO2 is 3.011 ×
`10^(24)` molecules

(Ans)