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Mighty Moles
Vocab
Magical Mole-Mole
Mysterious Mass-Mass
Name Your Limit (ing Reactant)
100
6.02 x 10^23 particles
What is one mole?
100
The molar mass of calcium hydroxide.
What is 74 g/mol?
100
The reactant which runs out first.
What is the limiting reactant?
200
Another name for the mole, after the scientist who studied it.
What is Avogadro's number?
200
Equations must be balanced so that they will obey this law.
What is the Law of Conservation of Mass/Matter?
200
actual yield/theoretical yield x 100 =
What is percent yield?
300
The unit factor for a problem involving molar mass.
What is 1 mole over x grams or x grams over 1 mole.
300
On the left side of the equation in front of the yields sign.
What are reactants?
300
Balance. ___Al + ___Fe3O4 ---> ___Al2O3 + ___Fe
What is 8 Al + 3 Fe3O4 ---> 4 Al2O3 + 9 Fe ?
300
The number of grams of magnesium in 7.00 moles.
What is 168 g?
300
The reagents which do not run out when the reaction stops.
What are the reactants/reagents in excess?
400
Represented by the coefficient in a balanced chemical equation.
What is the number of moles?
400
The thing that will cause your reaction to stop.
What is the limiting reactant/reagent? (when it runs out)
400
____Al2O3 --> ____Al + ____ O2 The number of grams of Al2O3 which decompose if 81 grams of Al react with oxygen gas.
What is 153 grams Al2O3?
400
500g HCl and 500g Ag Balancing the equation, then converting both masses of grams to moles.
What are the first steps to naming the limiting reactant?
500
The number of liters of one mole of a gas @ STP.
What is 22.4 L?
500
___H2 + ___ O2 --> ___ H2O The number of grams of oxygen gas which are needed to produce 10 grams of water.
What is 8.89 grams of O2?
500
___SnO2 + ___H2 → ___ Sn + ___H2O You have 36 g of SnO2 and 36 g of H2. Find the limiting reactant.
What is SnO2?