Mass of SnF₂ produced : 35.634 g
Further explanation
Reaction
Sn+2HF⇒SnF₂+H₂
mol Sn (Ar 118.710 g/mol) :
[tex]\tt \dfrac{45}{118.710}=0.379[/tex]
mol SnF₂ = mol Sn = 0.379
mass SnF₂ (MW=156.69 g/mol) :
[tex]\tt 0.379\times 156.69=59.39~g[/tex]⇒theoretical
[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\60\%=\dfrac{actual}{59.39}\times 100\%\\\\actual=0.6\times 59.39=35.634~g[/tex]
