Em tham khảo nha:
\(\begin{array}{l}
a)\\
{M_{FeS{O_4}}} = {M_{Fe}} + {M_S} + 4 \times {M_O} = 56 + 32 + 16 \times 4 = 152dvC\\
b)\\
{M_{A{g_3}P{O_4}}} = 3 \times {M_{Ag}} + {M_P} + 4 \times {M_O}\\
\Rightarrow {M_{A{g_3}P{O_4}}} = 3 \times 108 + 31 + 16 \times 4 = 410\,dvC'\\
c)\\
{M_{Ca{{(N{O_3})}_2}}} = {M_{Ca}} + 2 \times {M_N} + 6 \times {M_O}\\
\Rightarrow {M_{Ca{{(N{O_3})}_2}}} = 40 + 2 \times 14 + 6 \times 16 = 164\,dvC\\
d)\\
{M_{N{a_2}O}} = 2 \times {M_{Na}} + {M_O} = 2 \times 23 + 16 = 62\,dvC\\
e)\\
{M_{BaC{O_3}}} = {M_{Ba}} + {M_C} + 3 \times {M_O} = 137 + 12 + 16 \times 3 = 197dvC
\end{array}\)
