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
What is 2?
This is the amount of magnesium chloride produced (in grams) if 20.0 g of magnesium reacts with excess hydrochloric acid according to: Mg + HCl → MgCl2 + H2
What is 39.2 grams?
This is the ingredient that runs out first if you have 5 cups of flour, 9 eggs, and 3 tbsp of oil with a recipe requiring 2 cups flour, 3 eggs, and 1 tbsp oil to make 4 waffles
What is flour?
The percent yield tells you a relationship between the _________ yield and experimental/actual yield of a certain product
What is 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
What is 1?
This is the amount of lithium nitride produced (in grams) if 5.50g of lithium reacts with an excess of nitrogen gas according to: 6 Li + N2 → 2 Li3N
What is 9.16 grams?
In a chemical reaction, reactants that are not completely used up when the reaction is finished are called
What are excess reactants?
This is the actual amount of grams produced by a reaction if the theoretical yield is 42.0 grams of product and the percent yield is 75%
What is 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 (in grams) when a chemist reacts 14.4 g of CaO with an excess of CO2
What is 25.7 grams?
Determine the limiting reactant if you are starting out with 100 grams of each reactant according to: SO2 + 2 NaOH → Na2SO3 + H2O
What is NaOH?
This is the percent yield when a 8.5 g sample of NH3 produces 4.5 g of NO according to: 4 NH3 + 5 O2 → 4 NO + 6 H2O
What is 30%?
In the reaction represented by the equation 2 Al2O3 → 4 Al + 3 O2, 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
What is 329 g?
This is the theoretical yield of silicon carbide if 50.0 grams of silicon dioxide reacts with 79.1 grams of carbon according to: SiO2 + C → SiC + CO
What is 33.3 g?
This is the percent yield if 155 grams of calcium carbonate is reacted with 250 grams of hydrochloric acid and 142 grams of calcium chloride is obtained?
CaCO3 + 2 HCl → CaCl2 + CO2 + H2O
What is 56.6%?
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
What is 0.663 grams?
This is the amount (in grams) of lead chloride formed if 135.8 g of sodium chloride reacts with 95.7 g of lead (II) in a single replacement reaction
What is 128.06 g?
This is the percent yield of CuS given that you start with 15.5 g Na2S and 12.1 g CuSO4 if the actual amount of CuS produced was 3.05 g
Na2S + CuSO4 → Na2SO4 + CuS
What is 42.1%?