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17 Cards in this Set

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  • Back
measure of how close a series of measures are to one another
measure of how close a measurement comes to the actual or true value of whatever is measured
atomic number
equals the number of protons

#protons = #electrons

mass number - atomic number =
What is the Heisenberg uncertainty principle?
*it is impossible to know exactly both the velocity and the position of a particle at the same time
Theoretical Yield
*How much you're SUPPOSED to get
-Given: number of moles of CO2
Find: grams of CO2
multiply #moles x molar mass CO2
=grams CO2 = theoretical yield
Actual Yield
*found by experiment
-given to you in problem
Percent Yield
Actual Yield/Theoretical Yield
Limiting Reagent
-limits or determines the amount of product that can be formed in a reaction
Given: x mol of O2; x mol of C7H16
x mol of 02/leading coefficient of O2
x mol of C7H16/leading coefficient of C7H16
*whichever is smaller is the limiting reagent and will run out first*
Excess Reagent
-the reactant that is not completely used up in a reaction
take limiting reagent and multiply it by the mole ratio
e.g. 0.521 mol C7H16 x 11 mol O2/1 mol C7H16
C7H16 + 11O2 = 7CO2 + 8H2O
To find the moles of products, what must be used on the left side of the equation?
limiting reagent

for example:
Given: .521 mol of C7H16 and 11 mol of 16.2 mol of O2
*C7H16 is limiting reagent*
-use C7H16 to find moles of products: CO2 and H2O
Organic Chemistry
study of carbon-containing substances
Inorganic chemistry
substances that do not contain carbon: mainly nonliving things
Analytical chemistry
concerned w/ composition of substances
Physical chemistry
theories and experiments that describe the behavior of chemicals
the study of the chemistry of living organisms
e.g. blood clotting, digestion, respiration, etc.
As we move from left to right across the periodic table, electronegativity....
As we move down the periodic table, electronegativity...