Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What does it mean for a reactant to be a limiting reactant?
it all reacts and limits how much product can be formed
it does not all react, and has no affect on the amount of product formed
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If 4 g of calcium reacts with oxygen from the air, which is most likely to be a limiting reactant, the calcium or the oxygen?
calcium
oxygen
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Calcium oxide and water react in a 1: 1 ratio:
CaO + H2O ➔ Ca(OH)2
In a reaction between 3 moles of calcium oxide and 7 moles of water, what is the limiting reactant?
water
calcium oxide
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What does it mean for a reactant to be in excess?
it all reacts and limits how much product can be formed
it does not all react, and has no affect on the amount of product formed
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Sulfur dioxide and oxygen react together in a 2:1 ratio:
2SO2 + O2 ➔ 2SO3
In a reaction between 1.8 moles of sulfur dioxide, and 1 mole of oxygen, which reactant will be in excess?
sulfur dioxide
oxygen
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What mass of hydrogen is formed when 4.00 g of magnesium reacts with excess sulfuric acid?
Mg + H2SO4 ➔ MgSO4 + H2
Give your answer to 3 significant figures.
g
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What mass of potassium reacts with 8.00 g of oxygen?
4K + O2 ➔ 2K2O
g
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What mass of chlorine reacts with 32.4 g of aluminium?
2Al + 3Cl2 ➔ 2AlCl3
g
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What mass of carbon dioxide is made when 21.6 g of pentane (C5H12) burns in oxygen?
C5H12 + 8O2 ➔ 5CO2 + 6H2O
g
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What mass of nitrogen would react with 15.0 g of hydrogen?
N2 + 3H2 ➔ 2NH3
g
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