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WorksheetsStoichiometry
Total questions: 10
Worksheet time: 56mins
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
What mass of O2 will be needed to burn 36.1 g of B2H6?
What is the molar mass of NaOH?
40.00 g/mol
38.99 g/mol
23.99 g/mol
57.00 g/mol
18.26 mL of a 1.50 mol/L hydrochloric acid reacts with magnesium hydroxide. Calculate the mass of magnesium hydroxide needed for the reaction.
Mg(OH)2 + 2 HCl -> 2 H2O + MgCl2
Mg(OH)2 = 58.33 g/mol ; HCl = 36.46 g/mol
4.68 g Mg(OH)2
0.799 g Mg(OH)2
0.0274 Mg(OH)2
1.60 g Mg(OH)2
1Mg + 2H2O --> Mg(OH)2 + H2
What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium?
62.0 L
0.12 L
2.77 L
1.15 L
Mg3N2 + 3H2O ––> 3 MgO + 2NH3
If 10.3 L of ammonia gas at 20.0˚C and 0.989 atm is created, how many liters of water at STP are required?
0.423 L H2O
14.2 L H2O
0.204 L H2O
10.3 L H2O
If 25.0 mL of H3PO4 are neutralized by 42.6 mL of 0.103 M Ca(OH)2, what is [H3PO4]?
0.176 M
0.263 M
0.117 M
0.0585 M
What mass of O2 will be needed to burn 36.1 g of B2H6?
