Chemistry

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}

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

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

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