Question

100g of calcium carbonate find out the no of moles and molecules in calcium carbonate

Answer 1

$numer \: of \: moles \: = \frac{given \: mass}{molecular \: mass}$

Given mass = 100g

Molecular mass = 100u

$no \: of \: moles \: = \frac{100}{100} \: = \: 1 \: mole$

$no \: of \: molecules \: = no \: of \: moles \: \times avogadro \: no \\ = \: 1 \times 6.022 \times 10 {}^{23} = 6.022 \times 10 {}^{23}$