a) Balance the following equation (choose the best set of coefficients): ___Magnesium (s) + ___Hydrochloric acid → ___Magnesium chloride + ___Hydrogen [ Select ] ["1, 2, 1, 1", "2, 2, 1, 1", "2, 1, 2, 1"] b) A chemist starts with 4.5 grams of magnesium. How many moles of magnesium are present in this sample? You might need a periodic table for this question: 0 Periodic Table.pdf Actions [ Select ] ["4.50 mol", "0.185 mol", "0.375 mol", "109.35 mol"] c) How many moles of hydrogen gas should theoretically form when all 4.5g of Magnesium react? [ Select ] ["109.35 mol", "0.185 mol", "4.50 mol", "0.375 mol"]
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a) Balance the following equation (choose the best set of coefficients):
___Magnesium (s) + ___Hydrochloric acid → ___Magnesium chloride + ___Hydrogen
[ Select ] ["1, 2, 1, 1", "2, 2, 1, 1", "2, 1, 2, 1"]
b) A chemist starts with 4.5 grams of magnesium. How many moles of magnesium are present in this sample?
You might need a periodic table for this question: 0 Periodic Table.pdf
[ Select ] ["4.50 mol", "0.185 mol", "0.375 mol", "109.35 mol"]
c) How many moles of hydrogen gas should theoretically form when all 4.5g of Magnesium react? [ Select ] ["109.35 mol", "0.185 mol", "4.50 mol", "0.375 mol"]
d) How many grams of hydrogen gas should theoretically form when all 4.5g of Magnesium react? [ Select ] ["4.50 g", "0.374 g", "0.185 g", "218.70 g"]
e) If only 0.105 grams of hydrogen gas actually form, what is the percent yield for this reaction? [ Select ] ["1.9 %", "3.55 %", "28.1 %", "114 %"]
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e) If only 0.105 grams of hydrogen gas actually form, what is the percent yield for this reaction? [ Select ] ["1.9 %", "3.55 %", "28.1 %", "114 %"]
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