Ta có: \(n_{Mg}=\dfrac{4,8}{24}=0,2\left(mol\right)\)
PT: \(Mg+H_2SO_4\rightarrow MgSO_4+H_2\)
_____0,2_______0,2______0,2____0,2 (mol)
a, \(V_{H_2}=0,2.24,79=4,958\left(l\right)\)
b, \(m_{MgSO_4}=0,2.120=24\left(g\right)\)
c, \(C_{M_{H_2SO_4}}=\dfrac{0,2}{0,1}=2\left(M\right)\)