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WorksheetsCHS Stoichiometry Review
Total questions: 18
Worksheet time: 1hrs 11mins
4Na + O2 --> 2Na2O
How many grams of Na2O will be produced if you start with 20.0 moles of O2?
620 grams
1900 grams
2480 grams
2479.08 grams
Calculate the volume of 321 grams of oxygen gas.
321 Liters
224.71 Liters
225 Liters
10.0 Liters
How many molecules of ammonia are contained in 15.4 moles of ammonia, NH3?
9.27*1024 molecules
6.26*1024 molecules
9.2708*1024 molecules
2.56*10-23 molecules
How many moles are present in 10.2 liters of Argon gas at STP?
229 moles
0.455357 moles
228 moles
0.455 moles
How many moles are in 35.4 g AsH3?
0.454 moles
0.19 moles
0.454163 moles
5.2 moles
Which definition best describes the mole?
A very long time
A number that describes how big something is
A unit of measurement
A chemistry term for some number of atoms
2C7H6O2 + 15O2 → 14CO2 + 6H2O
How many moles of oxygen gas are reacting in the balanced chemical equation above?
2
15
14
6
2SO2 + O2 --> 2SO3
If 13.7 moles of SO3 were produced, how many moles of oxygen gas were put into the reaction?
5.00 moles
6.85 moles
3.34 moles
27.4 moles
H = 50%
H = 14.3%
H = 7.8%
H = 28.1%
Which element has an abundance of 39.03% in the compound sodium phosphate, Na3PO4
Na
P
O
None of the above
This is what you call a reactant that you have enough of. The one that DOES NOT run out.
Limiting Reactant
Excess Reactant
Highly Reactant
Super Reactant
A limiting reactant is a reactant that.....
runs out during a chemical reaction
causes a reaction to stop
determines the amount of products that can be made
all of these
What is the molar mass of Al(NO3)3?
62.01 g/mol
88.99 g/mol
151.00 g/mol
213.01 g/mol
2Na + 2H2O → 2NaOH+ H2 How many grams of hydrogen are produced if
120 g of Na are available?
5.27 g
2.63 g
690 g
45 g
