If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below.

Question

SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g)
ÄHrxn=?kJ

Answer 1

Wouldn't it be
15.0 kJ x (4 x atomic mass F/1.50) = ??
Check my thinking.

Answer 2

814