A 0.352 g sample of an unknown metallic element was found to contain atoms

CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A 0.352 g sample of an unknown metallic element was found to contain

6.70\times10^{21}

atoms. What is the experimental molar mass of the element? (a)

3.18\,\text{g mol}^{-1}

(b)

318\,\text{g mol}^{-1}

(c)

31.7\,\text{g mol}^{-1}

(d)

53.0\,\text{g mol}^{-1}