Answer:
C.106 ml
Explanation:
Boyle's Law P₁V₁ = P₂V₂ , but we need to make sure our pressure is in the same units, in this case we will convert torr to atm
811 torr * (1atm/760torr) = 1.067105263 atm
P₁V₁ = P₂V₂
(1.067105263 atm)(11.1 mL) = (0.112 atm)(V₂)
V₂ = 11.84486842/0.112
V₂ = 105.7577538 mL = 106 mL
Number of moles of Hydrogen gas produced = 2.5 moles
Given the balanced chemical equation,

This means, 1 mole of Mg and 2 moles of HCl gives 1 mole of Hydrogen gas.
Given that 2.5 moles of Magnesium is taken and an excess of Hydrochloric acid.
The mole ratio of Magnesium and Hydrogen = 1:1
Thus 2.5 moles of Magnesium with an excess of Hydrochloric acid will yield 2.5 moles of Hydrogen gas.
[By referring excess of HCl, we may assume that it contains at least 5 moles of HCl. Then only 2.5 moles of Mg will produce 2.5 moles of Hydrogen gas].
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Answer
2 It might be wrong
Explanation
due to there reactive rate?