Calculate the molar mass of each of the following:

(a) $\left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4} \quad(\mathrm{b}) \mathrm{CH}_{2} \mathrm{Cl}_{2} \quad$ (c) $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O} \quad(\mathrm{d}) \mathrm{BrF}_{3}$

a) $\operatorname{Mr}\left(\left(\mathrm{NH}_{4}\right)_{3} \mathrm{PO}_{4}\right)=149 \mathrm{g} / \mathrm{mol}$

b) $\operatorname{Mr}\left(\mathrm{CH}_{2} \mathrm{Cl}_{2}\right)=84,91 \mathrm{g} / \mathrm{mol}$

c) $\mathrm{Mr}\left(\mathrm{CuSO}_{4} * 5 \mathrm{H}_{2} \mathrm{O}\right)=249,62 \mathrm{g} / \mathrm{mol}$

d) $\operatorname{Mr}\left(\mathrm{BrF}_{3}\right)=136,9 \mathrm{g} / \mathrm{mol}$

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