A sample contains formula units of ( Al _ 2 ( SO _ 4 )_ 3 18 H _ 2 O )

CHEMISTRY · Single correct · CBSE · Chemistry · Acids, Bases and Salts · Acids, Bases and Salts

Problem

A sample contains

2.80\times10^{24}

formula units of

\text{Al}_{2}(\text{SO}_{4})_{3}\cdot18\text{H}_{2}\text{O}

. Determine the mass of water in the sample, expressed in kilograms and rounded to three significant figures. (a)

0.0838\,\text{kg}

(b)

1.34\,\text{kg}

(c)

1.51\,\text{kg}

(d)

15.1\,\text{kg}