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# Chem 10Stoichiometry

### Chemistry terms/concepts associated with equation stoichiometry.

The math relationships between amounts of reactants and products derived from balanced equations is called _?_. stoichiometry
Name of the reactant that runs out first in a reaction? limiting reactant
Name of the reactant that has more than is needed so some is left over? excess reactant
What is the name of the amount of product that should be formed based on stoichiometry calculations? theoretical yield
What is the name of the mount of product that is collected when the lab is performed? actual yield
You can use the ratio of how much product is collected compared to how much should have been collected to calculate what quantity? percent yield
What is the name of the process of performing conversions that is unit-driven (using 'railroad tracks')? factor-label method
How many steps are in a mole - mole problem grid? 2
How many steps are in a mass - mass problem grid? 4
How many steps are in a mass - gas volume (or vice versa) problem grid? 4
How many 4-step grids are needed when performing an excess-limiting problem which asks for amount of excess reactant leftover? 3
Is the limiting reactant always the reactant with the smaller mass? no
When can the percent yield be higher than 100% never... such an answer indicates some error has occurred
Which step in a 4-step grid uses coefficients from the balanced equation? 3rd
How does the instructor who made this study stack want students to round atomic masses ? nearest 0.1 (tenth)
In a 4-step grid, the # that goes with 'mol' in steps 2 and 4 is always... 1
For an excess-limiting double replacement reaction, both reactants should be solved for which product? the precipitate... it is followed by (s)
What is molar volume of a gas at STP? 22.4 L
How many steps are in a gas volume - gas volume problem grid? 2
What quantities are always conserved in a balanced equation? mass and atoms
What is conserved in this equation? H2(g) + Cl2(g) --> 2 HCl(g) mass, atoms, moles, and volume
What is the mole ratio of carbon dioxide to water in this equation? 6CO2(g) + 6H2O(l) –––> C6H12O6(s) + 9O2(g) 6 : 6 (do not reduce to 1 : 1)
What is the name for the process of canceling units in factor-label grids? dimensional analysis
What is standard temperature on the Celsius scale? 0 (zero)
What is standard pressure in atmospheres of pressure? 1 (one)
Standard pressure is the average pressure exerted by the atmosphere over a long time at what location? sea level
For a compound to be a precipitate, how must it be labelled on a solubility table? I (Insoluble)
Created by: goakley

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