Question

How many moles are in 25g of CO2?

With calculation show please

Answer 1

Here’s the answer! Let me know if you have any questions

Answer 2

0.568 moles (3 s.f.)

Explanation:

no. of moles= mass ÷mr

Mr (molecular mass) is the sum of atomic masses of the atoms in the compound. The atomic mass can be found from the periodic table.

Mr of CO₂

= 12 + 2(16)

= 44 amu

Thus, no. of moles

= 25 ÷44

= 0.568 moles (3 s.f.)