Câu 3
\(n_{O_2}=\dfrac{8}{32}=0,25mol\\ V_{O_2,đkc}=0,25.24,79=6,1975l\)
Câu 4
\(a.C_{\%AgNO_3}=\dfrac{34}{34+66}\cdot100\%=34\%\\ b.n_{AgNO_3}=\dfrac{34}{170}=0,2mol\\ C_{M_{AgNO_3}}=\dfrac{0,2}{0,1}=2M\)
Câu 5
\(a.C_{\%CuSO_4}=\dfrac{8}{8+40}\cdot100\approx16,67\%\\ b.n_{CuSO_4}=\dfrac{8}{160}=0,05mol\\ C_{M_{CuSO_4}}=\dfrac{0,05}{0,05}=1M\)
Câu 1
\(a.\) \(Iron+Hydrochloric\) \(acid\rightarrow Iron\) \(chloride+hyrogen\)
\(b.\) \(Fe+2HCl\rightarrow FeCl_2+H_2\)
Câu 2
\(a.n_{CaCO_3}=\dfrac{10}{100}=0,1mol\\ CaCO_3\xrightarrow[t^0]{}CaO+CO_2\\ n_{CO_2\left(lt\right)}=n_{CaO\left(lt\right)}=n_{CaCO_3}=0,1mol\\ V_{CO_2,đkc}=0,1.24,79=2,479l\\ b.m_{CaO\left(lt\right)}=0,1.56=5,6g\\ H=\dfrac{4}{5,6}\cdot100\%\approx71,43\%\)
