A sealed vial contains molecules of liquid water

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

Problem

A sealed vial contains 3.5×10223.5\times10^{22} molecules of liquid water. Calculate the amount of water, in moles, present in the vial. (a) 5.8×10−3 mol5.8\times10^{-3}\,\text{mol} (b) 3.5×10−2 mol3.5\times10^{-2}\,\text{mol} (c) 5.8×10−2 mol5.8\times10^{-2}\,\text{mol} (d) 5.8×10−1 mol5.8\times10^{-1}\,\text{mol}

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