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WorksheetsMass Chemistry
Total questions: 20
Worksheet time: 51mins
What is the mass of CO2 produced when 35g of O2 reacts?
N2 + 3 H2 → 2 NH3
How many moles of NH3 will be formed from 1 mole of H2?
4 moles
2/3 moles
3/2 moles
6 moles
How many grams of hydrogen are produced if 120 g of Na are available?
What is the first thing you must do to solve a stoichiometry problem?
Write a Balanced Equation
Panic
Write an Unbalanced Equation
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2H2 + O2 → 2H2O
How many moles of water can be produced if 8 moles H2 are used?
4 moles
8 moles
16 moles
2 moles
How many moles of oxygen are consumed if 8 moles H2 are used?
In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?
10/6
3/4
4/3
2/3
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
1/2
2/1
3/4
4/3
What is the molar mass of table salt (NaCl)?
116.89 g/mol
35.45 g/mol
22.99 g/mol
58.44 g/mol
What is the molar mass of NaOH?
40.00 g/mol
38.99 g/mol
23.99 g/mol
57.00 g/mol
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
2NaClO3 (s) → 2NaCl (s) + 3O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
NaClO3 = 106.44 g/mol ; O2 = 32.00 g/mol
256 g of O2
576 g of O2
288 g of O2
384 g of O2
Cl2 + 2KBr → Br2 + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
KCl = 74.55 g/mol ; KBr = 119.00 g/mol
749 g
223 g
479 g
814 g
From the reaction: B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
B2H6 = 27.68 g/mol
13.8 g O2
3.91 mol of O2
125 g O2
41.7 g O2
4NH3+6NO --> 5N2 + 6H2O
How many grams of hydrogen are produced if 120 g of Na are available?
Mg + 2HCl --> MgCl2 + H2
