Mighty Moles
6.02 x 10^23 particles
What is one mole?
A process in which a substance (or substances) is changed into one or more new substances.
What is chemical reaction?
The molar mass of calcium hydroxide.
What is 74 g/mol?
The difference between the units of molecular or formula mass and the units of molar mass.
What is one is g and one is g/mol?
The reactant which runs out first.
What is the limiting reactant?
Another name for the mole, after the scientist who studied it.
What is Avogadro's number?
Equations must be balanced so that they will obey this law.
What is the Law of Conservation of Mass/Matter?
C5H12 + 8O2 = 5CO2 + 6H2O The number of moles of carbon dioxide can I make if I start with 16 moles of oxygen gas.
What is 10 moles?
You should look here when solving a mass-mass problem.
What is the periodic table?
actual yield/theoretical yield x 100 =
What is percent yield?
The unit factor for a problem involving molar mass.
What is 1 mole over x grams or x grams over 1 mole.
On the left side of the equation in front of the yields sign.
What are reactants?
Balance. ___Al + ___Fe3O4 ---> ___Al2O3 + ___Fe
What is 8 Al + 3 Fe3O4 ---> 4 Al2O3 + 9 Fe ?
The number of grams of magnesium in 7.00 moles.
What is 168 g?
The reagents which do not run out when the reaction stops.
What are the reactants/reagents in excess?
Represented by the coefficient in a balanced chemical equation.
What is the number of moles?
The thing that will cause your reaction to stop.
What is the limiting reactant/reagent? (when it runs out)
___CH4 + ___O2 --> ___ CO2 + ___H2O If I want to get 5.3 moles of water, how many moles of methane do I need?
What is 2.65 moles of methane?
____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?
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?
The number of liters of one mole of a gas @ STP.
What is 22.4 L?
The calculation of quantitative (measurable #) relationships of the reactants and products in a balanced chemical reaction.
What is stoichiometry?
To get these, look at the coefficients in the balanced equation.
What is the numbers for a mole/mole ratio.
___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?
___SnO2 + ___H2 → ___ Sn + ___H2O You have 36 g of SnO2 and 36 g of H2. Find the limiting reactant.
What is SnO2?