Bài 2:
a: \(CaCl_2+2AgNO_3\rightarrow Ca\left(NO_3\right)_2+2AgCl\downarrow\)
\(n_{CaCl_2}=\dfrac{22.2}{83}\simeq0.3\left(mol\right)\)
=>\(n_{Ag\left(NO_3\right)}=0.15\left(mol\right)\)
\(m_{AgNO_3}=0.15\cdot170=25.5\left(g\right)\)
b: \(m_{Ca\left(NO_3\right)_2}=0.3\cdot136=40.8\left(g\right)\)
\(m_{AgCl}=0.15\cdot143.5=21.525\left(g\right)\)
Bài 4 : \(KOH+HNO3\rightarrow KNO_3+H_2O\)
Lí thuyết : 56 g -> 63 g ---> 101 g
Thực tế : x tấn -> y tấn ---> 1 tấn
Có : 1 tấn = 10000 g => \(\left\{{}\begin{matrix}x=\dfrac{10000.56}{101}=5544,55\left(g\right)\\y=\dfrac{10000.63}{101}=6237,62\left(g\right)\end{matrix}\right.\)