A stoichiometric computation in which the mass of the product is determined from the given mass of the reactants
What is mass-mass calcualation
100
In a chemical reaction, the atoms of a reactants are _______ in the products.
What is conserved (the same)
100
What is the conversion factor if looking for VOLUME, and given moles?
What is 22.4 L/1 mol
100
the substance completely used up in a chemical reaction
What is the limiting reagent
200
A conversion factor derived from the coefficients of a balanced equation interpreted in terms of moles
What is mole ratio
200
In a chemical reaction the mass of the reactants is ________ in the products
What is conserved (the same)
200
Volume is _____________ necessarily in a chemical reaction.
What is not conserved
200
If given mass, what is the flow conversions you would use to find volume, starting with:
Mass G -->
What is Mass G--> Moles G --> Moles W --> Volume W
200
the substance left over after a reaction takes place
What is excess reagent
300
The calculation of quantities in a chemical reaction
What is stoichiometry
300
To calculate the number of grams produced in a reaction given grams of given what are the general conversion factors starting with:
(grams G) X (1mol G/molar mass G) X
What is
(grams G) X (1mol G/molar mass G) X (mol ratio) X (molar mass W/ 1 mol W)
300
If you could drop 24 drops of copper into a beaker containing nitric acid, how many molecules of NO would be formed?
3 Cu + 8 HNO3 --> 3Cu(NO3)2 + 2NO + 4 H2O
What is 16
300
Given the reaction: 2 NO + O2 --> 2 NO2
If 10.5 L O2 react at STP, how many liters of NO2 are produced?
What is 21 L
300
the ratio of how much product is produced
What is percent yield
400
The amount of a substance that contains 6.02 X10^23 representative particles of a substance
What is a mole
400
How many grams of CO are needed to react with excess Fe2O3 to produce 630 g of Fe? The equation in this reaction is:
Fe2O3 + 3 CO --> 3 CO2 + 2 Fe
What is 948 g CO
400
How many grams of Cu would be needed to react with 3.0 mol HNO3?
3 Cu + 8 HNO3 --> 3Cu(NO3)2 + 4 H2O
What is 71.43 g
400
How many liters of oxygen are required to react completely with 2.4 L of hydrogen to form water?
2 H2 + O2 --> 2 H20
What is 1.2 L
400
A reaction that has been calculated to produce 75 g of CuO actually produced 70 g of CuO. What is the percent yield?
What is 93.33 %
500
The actual amount of a product in a chemical reaction
What is actual yield
500
If 6.0 g of H2 are made to react with excess CO, how many grans of CH3OH can theoretically be produced according to the following equation?
CO + 2 H2 --> CH3OH
What is 48 g
500
What can the coefficients in a chemical equation tell you?
What is number of molecules and moles.
500
How many liters of carbon dioxide at STP are produced when 70 g of calcium carbonate is heated according to the following equation:
CaCO3 --> CaO + CO2
What is 15.68 L
500
A 500 g of Al2(SO4)3 is made to react with 475 g of Ca(OH)2.
A total of 596 g of CaSO4 is produced. The balanced equation is :
Al2(SO4)3 + 3Ca(OH)2 --> 2 Al(OH)3 +3CaSO4
What is the is the excess reagent and how much of it do we need?