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According to the Following Thermochemical Equation,what Mass of HF (In

Question 73

Multiple Choice

According to the following thermochemical equation,what mass of HF (in g) must react in order to produce 345 kJ of energy? Assume excess SiO2. SiO2(s) + 4 HF(g) → SiF4(g) + 2 H2O(l) ΔH°rxn = -184 kJ


A) 42.7 g
B) 37.5 g
C) 150. g
D) 107 g
E) 173 g

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