Using the formula

CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance

Problem

Using the formula

n=\frac{m}{M}

, calculate the amount in moles of the following: (1)

10.0\,\text{g}

of sodium (2)

0.5\,\text{kg}

\mathrm{NaCl}

(3)

0.25\,\text{g}

\mathrm{KMnO_4}

(4)

3.0\,\text{kg}

\mathrm{CO_2}

(5)

15.0\,\text{g}

\mathrm{Br_2}

(6)

1\,\text{g}

\mathrm{H_2O}