$1) CaCl_2$ canxi clorua

$M = 111(g/mol)$

$2) Al_2(SO_4)_3$ nhôm sunfat

$M = 342 (g/mol)$

$3) FeCO_3$ sắt (II) cacbonat

$M = 116 (g/mol)

$4) ZnO$ kẽm oxit

$M = 81 (g/mol)$

$5) Cu_2O$ đồng (I) oxit

M = 144 (g/mol)$

$6) NaOH$ natri hiđroxit

M = 40(g/mol)$ 

$7) Al_2O_3$ nhôm oxit

$M = 102 (g/mol)$

$8)H_2SO_4$ axit sunfuric

$M = 98 (g/mol)$

$9)K_2CO_3$ kali cabonat

$M = 138 (g/mol)$

$10)SO_2$ lưu huỳnh đioxit

$M = 64 (g/mol)$

$\text{#Kudo Shinichi}$

Em tham khảo nha :

\(\begin{array}{l}
1)\\
CaC{l_2}:Canxi\,clorua\\
M = 40 + 35,5 \times 2 = 111dvC\\
2)\\
A{l_2}{(S{O_4})_3}:\text{Nhôm sunfat}\\
M = 342dvC\\
3)\\
FeC{O_3}:\text{Sắt (II) cacbonat}\\
M = 116dvC\\
4)\\
ZnO:\text{Kẽm oxit}\\
M = 81dvC\\
5)\\
C{u_2}O:\text{Đồng (I) oxit}\\
M = 144dvC\\
6)\\
NaOH:Natri\,hidroxit\\
M = 40dvC\\
7)\\
A{l_2}{O_3}:\text{Nhôm oxit}\\
M = 102dvC\\
8)\\
{H_2}S{O_4}:Axit\,sunfuric\\
M = 98dvC\\
9)\\
{K_2}C{O_3}:Kali\,cacbonat\\
M = 138dvC\\
10)\\
S{O_3}:\text{Lưu huỳnh trioxit}\\
M = 80dvC
\end{array}\)