Question

Calculate the mass of 5 mole of CaCO3 in grams?

Answer 1

Molecular mass of CaCO3 =sum of all the masses of its components
.Ca=40u
O=16u
C=12u
Molecular mass=40+12+3x16
=40+12+48
=100u
Therefore,
molar mass of CaCO3 is 100g
100g of CaCO3 contains 1 mole.
? ------------------------------>   5moles
=100x5/1=500 gms
∴ 5moles of CaCO3 contains 500g

Answer 2

Answer:500g

Explanation:number of moles =5.

5= weight / molecular weight

5= weight / 40+12+48

5= weight / 100

5*100= weight

500g = weight

Therefore weight of 5 moles of CaCO3 is 500 grams