Question

What is the mass of 4.5 moles of CO2? Given atomic mass of Carbon =12u and Oxygen =16u

Answer 1

Answer:

198u

Explanation:

mass of 1 mole of CO2 if atomic mass of carbon is 12u and for oxygen 16 u is 44 so for 4.5 moles it is 4.5 ×44= 198

Answer 2

The mass of 4.5 moles of CO2 is 198.

* Molar mass refers to the mass of one mole of a substance.

It is the addition of the atomic masses of all the individual atoms that it is made up of.

* The molar mass of CO2 is calculated as:

Sum of atomic mass of carbon and oxygen.

CO2 = C+ 2O = 12 + ( 16*2) = 44u

So mass of 1 mole of CO2 = 44u

Hence, mass of 4.5 moles of CO2 = 198u.