\(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\)
PTHH :
\(Mg+2HCl\rightarrow MgCl_2+H_2\uparrow\)
0,1 0,1 0,1
\(m_{MgCl_2}=0,1.95=9,5\left(g\right)\)
\(V_{H_2}=0,1.24,79=2,479\left(l\right)\)
Ta có: \(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\)
PT: \(Mg+2HCl\rightarrow MgCl_2+H_2\)
Theo PT: \(n_{MgCl_2}=n_{H_2}=n_{Mg}=0,1\left(mol\right)\)
\(\Rightarrow m_{MgCl_2}=0,1.95=9,5\left(g\right)\)
\(V_{H_2}=0,1.24,79=2,479\left(l\right)\)