PTHH: Mg + 2HCl -> MgCl2 + H2
Ta có: \(n_{MgCl_2}=\dfrac{9.10^{22}}{6.10^{23}}=0,15\left(mol\right)\)
Theo PTHH và đb, ta có:
\(n_{Mg}=n_{MgCl_2}=0,15\left(mol\right)\\ n_{HCl}=2.0,15=0,3\left(mol\right)\)
a) \(m_{Mg}=0,15.24=3,6\left(g\right)\)
b) \(m_{HCl}=0,3.36,5=10,95\left(g\right)\)
PTHH: Mg+2HCl->MgCl2+H2
\(n_{Mg}=n_{H_2}=\dfrac{9.10^{22}}{6.10^{23}}=0,15\left(mol\right)\)
\(n_{HCl}=2.n_{H_2}=2.0,15=0,3\left(mol\right)\)
a) \(m_{Mg}=0,15.24=3,6\left(g\right)\)
\(m_{HCl}=0,3.36,5=10,95\left(g\right)\)