Calculate the amount

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

Problem

Calculate the amount, in moles, present in a 175 mg sample of sodium chloride, NaCl. (Molar mass of NaCl = 58.44 g mol

^{-1}

.) (a)

3.00 \times 10^{-2}\;\text{mol}

(b)

3.00 \times 10^{-3}\;\text{mol}

(c)

7.61 \times 10^{-3}\;\text{mol}

(d)

5.84 \times 10^{-3}\;\text{mol}