Question

Answer 1

MgCl₂ + H₂ nhỏ nkaaa

Answer 2

a, 

Mg + 2HCl → MgCl2 + H2

b,

\(nMg=nMgCl_2=\dfrac{12}{24}=0,5mol\)

\(mMgCl_2=n.M=0,5.95=47,5gam\)

c,

\(nH_2=nMg=0,5mol\)

=>\(VH_{2_{\left(đktc\right)}}=n.22,4=0,5.22,4=11,2\)\(lít\)