The Mole
Avogadro's Number
What is 6.022 x 1023 OR 6.02 x1023
Balance the following equation:
H2 + O2 --> H2O
What is 2H2 + O2 --> 2H2O
2ZnS + 3O2 ---> 2ZnO + 2SO2
What is single replacement
2H2+O2→2H2O
The number of moles of O2 needed to react with 6 moles of H2.
What is 3
N2 + 3H2 --> 2NH3
The number of grams of NH3 that can be produced with 41.3g of H2.
What is 232g NH3
C2H6O + 3O2 --------> 2CO2 + 3H2O
The amount of carbon dioxide that ends up in the atmosphere when 80.0g of C2H6O combusts with 86.2g of oxygen.
What is 79.0g CO2
The molar mass of Sodium Bromide.
What is 102.89 g/mol
Balance the following equation:
Fe2O3 + C --> Fe + CO2
What is 2Fe2O3 + 3C --> 4Fe + 3CO2
P4 + 3O2 ---> 2P2O3
What is synthesis
2H2 + O2 --> 2H2O
The number of moles of water that can be produced when 4.44 mol of O2 react with excess hydrogen
What is 8.88 mol H2O.
N2 + 3H2 --> 2NH3
The amount of nitrogen needed to produce 232g NH3.
What is 191g.
C2H6O + 3O2 --------> 2CO2 + 3H2O
How much water can be produced when 80.0g C2H6O combusts with 86.2g O2?
What is 48.5g H2O
The number of moles in 3.25 x 1024 molecules of H2O.
What is 5.40 moles
Balance the following equation:
NaBr + Cl2 --> NaCl = Br2
What is 2NaBr + Cl2 --> 2NaCl + Br2
3 Hg(OH)2 + 2 H3PO4 → Hg3(PO4)2 + 6 H2O
What is double replacement
4Fe +3O2→2Fe2O3
The number of moles of Fe2O3 that can be produced when 5 moles of O2 react with iron.
What is 3.33 moles
MgO + 2NaCl --> MgCl2 + Na2O
The amount of NaCl required to react with 44.2g of MgO.
What is 129g NaCl.
C2H6O + 3O2 --------> 2CO2 + 3H2O
The percent yield if 44.1g of H2O are actually produced.
(Theoretical amount: 48.5g H2O)
What is 90.9%
OR
What is 91%
The number of grams of Ag2S in 0.546 moles.
What is 135g
Balance the following equation:
FeCl3 + MgO --> Fe2O3 + MgCl2
What is 2FeCl3 + 3MgO ---> Fe2O3 + 3MgCl2
Predict the products and balance the equation:
SnO2 + 2 H2 →
SnO2 + 2 H2 → Sn + 2 H2O
4Fe +3O2→2Fe2O3
The number of moles of Fe necessary to produce 9 moles of Fe2O3.
What is 18 moles Fe
MgO + 2NaCl --> MgCl2 + Na2O
The number of g of MgCl2 produced when 129g of NaCl react with magnesium oxide.
What is 105g MgCl2.
3Cu + 8HNO3 ----------> 3Cu(NO3)2 + 2NO + H2O
The limiting reagent when 50.0g HNO3 react with 50.0g Cu.
What is HNO3
The number of molecules of NH3 in 10.5g of NH3.
What is 3.71 x 1023 molecules
Balance the following equation:
Li + H3PO4 ---> H2 + Li3PO4
What is 6Li + 2H3PO4 ---> 3H2 + 2Li3PO4
Predict the products and balance the equation:
B2Br6 + 6 HNO3 →
What is B2Br6 + 6 HNO3 → 2 B(NO3)3 + 6 HBr
C2H6O + 3 O2 --> 2 CO2 + 3 H2O
The number of moles of CO2 produced when 12.3 moles of O2 react with 4.1 moles of C2H6O.
What is 8.2 moles CO2
3Cu + 8HNO3 ----------> 3Cu(NO3)2 + 2NO + H2O
The number of grams of HNO3 necessary to produce 100.0g of Cu(NO3)2
What is 89.61g HNO3
3Cu + 8HNO3 ----------> 3Cu(NO3)2 + 2NO + H2O
The excess copper left over after the reaction is run.
What is 31.2g Cu left over.