Question

Calvulate the number of moles in w0g of calcium carbonate

Answer 1

Moles is Given as given mass divided by molar mass.

Moles of w0g of CaC03 are:
w0/100= 0.01w0 mol.


Hope you get your answer.

Answer 2

Hellloo!!

Moles = given mass / molecular mass

here mass of CaCO3 is 100 gm

it means that you are trying to type 20 !!

So, moles = 20 / 100
moles = 0.2 moles!!

hope it helps