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WorksheetsStoichiometric Calculations Quiz
Total questions: 10
Worksheet time: 12mins
Noah and Samuel are conducting a chemistry experiment. They are combining hydrogen gas (H2) and oxygen (O2) to produce water (H2O). If they start with 2 moles of hydrogen gas, what is the mole-to-mole ratio between the hydrogen gas they started with and the water they produced, according to the balanced chemical equation 2H2 + O2 → 2H2O?
1:1
3:1
1:2
2:1
Calculate the number of moles of oxygen gas (O2) required to react completely with 4 moles of hydrogen gas (H2) according to the chemical equation H2 + O2 → H2O.
How many grams of carbon dioxide (CO2) are produced when 5 moles of methane (CH4) react completely according to the balanced chemical equation CH4 + 2O2 → CO2 + 2H2O?
10
44
220
5
Calculate the mass of sodium hydroxide (NaOH) required to react completely with 25 grams of hydrochloric acid (HCl) according to the balanced chemical equation NaOH + HCl → NaCl + H2O.
24.5
30.2
27.4
15.8
What is the limiting reagent in the reaction between 10 grams of hydrogen gas (H2) and 20 grams of oxygen gas (O2) according to the balanced chemical equation:
2H2 + O2 → 2H2O?
watch the video if you're unsure about limiting reactants/reagents
H2
H2O
2H2O
O2
Calculate the percent yield if 25 grams of carbon dioxide (CO2) are produced in a reaction, and the theoretical yield is 30 grams.
90%
75%
83.33%
80%
How many moles of water (H2O) are produced when 2 moles of hydrogen gas (H2) react completely according to the balanced chemical equation 2H2 + O2 → 2H2O?
Determine the mass of ammonia (NH3) produced when 10 grams of nitrogen gas (N2) react completely according to the balanced chemical equation N2 + 3H2 → 2NH3.
60 grams
45 grams
20 grams
34 grams
What is the mole-to-mass ratio between carbon dioxide (CO2) and methane (CH4) when they react in a balanced chemical equation?
1:2
1:3
2:1
1:1
Calculate the mass of oxygen gas (O2) required to react completely with 5 grams of hydrogen gas (H2) according to the balanced chemical equation 2H2 + O2 → 2H2O is (a) .
10 grams
7 grams
5 grams
2 grams
