Question

from 1 mole of CO2, 10 raise to power 23
molecules are removed. Find
remaining number of molecules?​

Answer 1

Explanation:

Molar mass of CO2=44g

Given mass = 1mole

Number of moles = 1/44

Number of moles=(number of molecules/Avogadro’s number)

⇒Number of molecules=Avogadro’s number×number of moles

⇒No. of molecules =6.022×10^23×1/44 =0.1368×10^23 Molecules in 1 moles

As 10^23 molecules are removed,

∴ No. of molecules left =0.1368×10^23-10^23 =0.1368

∴ No. of moles= (No. of molecules/Avogadro’s number) =(0.1368×10^23/6.23×10^23) =0.0219

Answer 2

Explanation:

1 into 10 raise to the power 23 / 44