Question

Calculate the mass of 6.022 × 1023 molecule of Calcium carbonate (CaCO3).

Answer 1

the molecular mass of calcium is 40 u
the molecular mass of carbon is 12 u
the molecular mass of oxygen is16 u
so.
CaCO3=40 + 12+ 16*3
=100u
so, the mass of 6.022 into 10 raise to power 23 molecules of calcium carbonate is 100 unit

Answer 2

The mass of calcium carbonate is 100 grams.

Given: $6.022 × 10^{23}$ molecule of Calcium carbonate.

To find: We have to find the mass of calcium carbonate.

Solution:

We know that 1 mole of calcium carbonate has $6.022 × 10^{23}$ molecules.

Thus the mass of calcium carbonate will be-

The mass of calcium is 40 grams.

The mass of oxygen is 16 grams.

The mass s of carbon atoms is 12 grams.

Thus the mass of calcium carbonate is-

$40 + 12 + 16 \times 3 \\ = 100$

The mass of calcium carbonate is 100 grams.