Hydrogen Fluoride Will React with Glass (Silicon Dioxide,SiO₂)according to the Equation

question 21

Multiple Choice

Hydrogen fluoride will react with glass (silicon dioxide,SiO₂) according to the equation below.What mass of HF is required to react completely with 16.0 g of glass?[Molar masses: Si,28.09 g/mol; F,19.00 g/mol; H,1.01 g/mol; O,16.00 g/mol] 4HF(g) + SiO₂(s) → SiF₄(g) + 2H₂O(g)

• A)5.33 g
• B)21.3 g
• C)64.0 g
• D)80.0 g
• E)320 g

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