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WorksheetsMoles + Conversions
Total questions: 19
Worksheet time: 1hrs 6mins
How many eggs in 4 dozen eggs?
12
48
40
4
A mole of carbon =
6.02 x 1023 carbon atoms
12.011 carbon atoms
one big ol' diamond
6.02 x 1023 atoms of carbon weighs _____
6.02 x 1023 g/mol
12.011 g/mol
12.011(6.02 x 1023) g/mol
Balanced the Equation
Panic
Find molar mass
Balance the following reaction :
CaC2 + H₂O --> C₂H₂ + Ca(OH)₂
1,2,2,2
1,2,1,1
2,1,1,1
2,1,2,1
What is the mole ratio of magnesium oxide and iron?
3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe
3 mol Mg : 2 mol Fe
2 mol MgO : 3 mol Fe
1 mol Fe : 2 mol Fe
3 mol MgO : 2 mol Fe
What is the mole ratio of oxygen gas to water?
2 H2 + O2 → 2 H2O
1:2
3:4
4:3
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
How many moles of aluminum oxide can you produce if you have 2 moles of Al?
4 Al + 3 O2 --> 2 Al2O3
3 mole
2 mole
1 mole
0.5 mole
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
N2 + 3H2 → 2NH3
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
N2 + 3 H2 → 2 NH3
6
2
3
1
Balance the reaction.
How many moles of iron can be made from 6 moles H2?
Fe2O3 + H2 → Fe + H2O
4 moles Fe
6 moles Fe
9 moles Fe
2 moles Fe
What units are molar mass in?
Moles
Grams
Grams per mole
Atoms
What is the molar mass of Calcium (Ca)?
20 g/mol
41 mol
40 g/mol
40 mol
Calculate the molar mass of propane
C3H8
13 g/mol
44 g/mol
99 g/mol
Calculate the molar mass of ammonium sulfate
(NH4)2SO4
132 g/mol
130 g/mol
34 g/mol
Balance the equation.
How many moles of HgO are needed to produce 125 g of O2 ?
HgO --> Hg + O2
7.81 mol HgO
4.32 mol HgO
9,000 mol HgO
3.89 mol HgO
How many grams of magnesium chloride are produced if 4.67 moles of HCl react?
Mg + 2 HCl --> MgCl2 + H2
222 g MgCl2
4.67 g MgCl2
94 g MgCl2
How many grams of N2 are produced if 4.03 moles of NH3 react?
4 NH3 + 3 O2 --> 2 N2 + 6 H2O
28.0 g N2
56.4 g N2
2.02 g N2
