Calculate the following:

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

Problem

Calculate the following: (a) The number of moles of sodium atoms in

10.0\,\text{g}

of sodium. (b) The mass of

0.300\,\text{mol}

\mathrm{Cu}(\mathrm{NO}_3)_2

. (c) The relative formula mass if

0.250\,\text{mol}

of the substance has a mass of

54.0\,\text{g}

. (d) The number of moles in

250\,\text{cm}^3

of methane at STP. (e) The volume of

0.25\,\text{mol}

\mathrm{CO}_2

at STP. (f) The concentration of

300\,\text{cm}^3

of solution containing

0.20\,\text{mol}

of solute. (g) The number of moles of NaCl in

75\,\text{cm}^3

of solution with a concentration of

0.15\,\text{mol dm}^{-3}

. (h) The concentration of

150\,\text{cm}^3

of solution that contains

2.50\,\text{g}

\mathrm{FeSO}_4