Question

10. From 200 mg of carbon dioxide, 1021 molecules are removed. How many moles of the gas
are left?​

Answer 1

Required Answer:

☑First we will convert the milligram into gram.

☑Molar mass of carbon dioxide is 44g/mol. So, the mole of carbon dioxide present are 4.5×10−3mol.

☑So, the number of moles of CO2 left is 2.88×10−3.