Mix
This is the branch of chemistry that deals with mass relationships in compounds and reactions.
What is Stoichiometry
This is the coefficient of hydrogen gas in the balanced form of the following reaction: H2 + O2 --> H2O
2
This is the amount of magnesium chloride produced (in grams) if 20.0 g of magnesium react with excess hydrochloric acid Mg + HCl -------> MgCl2 + H2
39.2 grams
This is the ingredient that is the limiting reactant if you have 5 cups of flour, 9 eggs and 3 tbs of oil? Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles
flour
The percent yield tells you a relationship between the _________ yield and actual yield of a certain product.
theoretical
In a chemical reaction, these numbers can be used to determine the mole ratio of any reactants and/or products.
What are coefficients?
This is the coefficient in front of nitrogen gas in the correctly balanced form of the equation:
(NH4)NO2 --> N2 + H2O
1
This is the amount of lithium nitride produced if 5.50g of Lithium reacts with an excess of nitrogen gas. The reaction: 6Li + N2 --> 2Li3N
What is 9.16 grams
In a chemical reaction, reactants that are not use up when the reaction is finished are called
What is excess reactants
This is the actual amount of grams produced if the theoretical yield of a reaction is 42.0 grams of product and the percent yield is 75%.
32 g
These are the units of molar mass.
What is g/mol.
This is the amount of moles of water that are made from complete reaction of 2.2 moles of oxygen gas with hydrogen gas Given the reaction:
2H2 + O2 → 2H2O
What is 4.4 moles
This is the amount of calcium carbonate produced when a chemist reacts 5.75L of CaO with an excess of CO2. The reaction: CaO + CO2 ---> CaCO3
25.7 grams.
There are 100.0 grams of each reactant available. Determine the limiting reactant in this equation.
SO2 + 2NaOH → Na2SO3 + H2O
NaOH
This is the percent yield when a sample of 8.5 g NH3 on oxidation produces 4.5 g of NO. Reaction:
4 NH3 + 5 O2 → 4 NO + 6 H2O
30%
In the reaction represented by the equation 2Al2O3 --> 4Al + 3O2, this is the mole ratio of Aluminum to Aluminum Oxide.
What is 4:2
This is the amount of moles of H2 that can be made from the complete reaction of 3.0 moles of Al Given:
2 Al + 6 HCl → 2 AlCl3 + 3 H2
What is 4.5 moles
This is the amount (in grams) of zinc chloride produced from the reaction of 202.7 grams of lithium chloride and an excess of zinc. 2LiCl + Zn ---> ZnCl2 + 2Li
329 g
This is the theoretical yield of silicon carbide if 50.0 grams of silicon dioxide reacts with 79.1 grams of Carbon. SiO2 + C → SiC + CO
33.3 g
Double Jeopardy
This is the percent yield if 155 grams of calcium carbonate is treated with 250 grams of hydrochloric acid and 142 grams of calcium chloride is obtained? CaCO3 + HCl → CaCl2 + CO2 + H2O
56.6%
Double Jeopardy!!!
This is the molar mass of Copper (II) sulfate.
What is a 160 g/mol?
This is how many moles of LiOH are required to react 20 moles of CO2 in the following reaction: CO2 + 2LiOH --> Li2CO3 + H2O
What is 40 moles.
This is the amount (in grams) of aluminum oxide produced from the reaction of 0.353 grams solid aluminum with an excess of oxygen gas. 4Al + 3O2 ---> 2Al2O3
0.663 grams.
This is the amount (g) of lead chloride formed if 135.8g of sodium chloride reacts with 95.7g of lead(II) in a single replacement reaction. 2NaCl + Pb ---> PbCl2 + 2Na
128.06g
A reaction with a calculated yield of 9.23 g produced 7.89 g of product. What is the percent yield of this reaction?
85.5%