What number of moles of O2 will be produced by the decomposition of 5.8 mol of water?
2.9 mol
100
What mass of oxygen will be required to react with 44.1 g C3H8
C3H8 + 5O2 --> 3CO2 + 4H20
160 g O2
100
2H2 + CO → CH3OH
What is the limiting reactant if 68.5 g of CO is reacted with
8.6 g of H2?
H2
200
2H2O --> 2H2 + O2
Decomposition
200
Is KCl soluble in water?
Yes, no precipitate will form
200
Calculate the number of moles of oxygen required to react with exactly 4.3 mol propane
C3H8 + 5O2 --> 3CO2 + 4H2O
21.5 mole of O2
200
Calculate the mass of I2 needed to react with 35.0 g Al
2Al + 3I2 --> 2AlI3
495g I2
200
A reaction actually yielded 5.0 g. The theoretical yield was 7.0g. Calculate the percent yield
71.4%
300
CH4 + 2O2 --> CO2 + 2H2O
Combustion
300
If KOH and Fe(NO3)3 are reacted, will a precipitate form?
yes, Fe(OH)3 is not soluble in water
300
What part of a chemical equation allows us to determine how much product we can get from a known amount of reactants?
Coefficient
300
2LiOH + CO2 --> Li2CO3 + H2O
What mass of CO2 can 1.00 X 10^3 g of lithium hydroxide absorb
9.2 X 10^2 g CO2
300
2H2 + CO → CH3OH
a) Calculate the theoretical yield of CH3OH if 68.5 g of CO is reacted with 8.6 g of H2.
Theoretical yield = 68.8 g
400
2KNO3 + BaCl2 --> 2KCl + Ba(NO3)2
Double Replacement
400
If KNO3 and BaCl2 are reacted, will a precipitate form?
No, all products are soluble.
400
Give at least three ways to interpret the coefficient in a chemical equation.
molecules, atoms, moles, dozens, etc
400
Why do you need to convert mass to moles in stoichiometry problems?
moles are equivalent, mass is not.
400
Aluminum reacts with chlorine gas to
form aluminum chloride via the following reaction:
2Al + 3Cl2 ---> 2AlCl3
How many grams of aluminum chloride could be
produced from
48.9 g
500
HCl + KOH --> KCl + H2O
What is Acid Base
500
NH4Cl and Pb(NO3)2 react. Write the balanced equation. Will a precipitate form?
2NH4Cl + Pb(NO3)2 -->2NH4NO3 + PbCl2
PbCL2 is insoluble so there will be a precipitate.
500
Calculate the number of moles of NH3 that can be made from 1.3 mol H2
N2 + 3H2 --> 2NH3
0.867 mol
500
Make your own mass-to-mass question.
Varies
500
3 FeCl2 + 2 Na3PO4 --> Fe3(PO4)2 + 6 NaCl
If 23 grams of iron (II) chloride reacts with 41 grams of sodium phosphate, what is the limiting reagent? How much sodium chloride can be formed?