The most abundant element in the earths crust is oxygen
Answer:
see attached
Explanation:
Two methods are shown in attached notes... Method I is based upon Experimental Rate Trends; Method II is the 'Ratio Method'.
Mass of SnF₂ produced : 35.634 g
<h3>Further explanation</h3>
Reaction
Sn+2HF⇒SnF₂+H₂
mol Sn (Ar 118.710 g/mol) :
mol SnF₂ = mol Sn = 0.379
mass SnF₂ (MW=156.69 g/mol) :
⇒theoretical