Term
|
Definition
(average value - true value)
---------------------------- x 100%
true value |
|
|
Term
|
Definition
(standard deviation)
--------------------- x 100%
mean(not S.D.'s mean) |
|
|
Term
|
Definition
|(Value 1 - Value 2)|
---------------------- x 100%
| Avg. of values | |
|
|
Term
| standard deviation (excel) |
|
Definition
| formulas > more functions > statistical > stdev.s |
|
|
Term
| measurements related to systematic error |
|
Definition
| absolute error and percent error |
|
|
Term
| measurements related to random error |
|
Definition
| standard deviation and coefficient of variation |
|
|
Term
| measurements related to accuracy |
|
Definition
| absolute error and percent error |
|
|
Term
| measurements related to precision |
|
Definition
| standard deviation and coefficient of variation |
|
|
Term
|
Definition
| closeness of measured value to the true value, correctness |
|
|
Term
|
Definition
| closeness of measured values to each other, reproducibility |
|
|
Term
| calculate moles of a substance given grams |
|
Definition
| # grams / molecular mass of compound |
|
|
Term
| calculate grams of substance given moles |
|
Definition
| multiply # moles by molecular mass of compound |
|
|
Term
| calculation for concentration |
|
Definition
| molarity, n (mols of substance) / volume of substance in liters or PPM |
|
|
Term
| calculate parts per million (PPM) |
|
Definition
| mass of substance in Mg / volume in liters |
|
|
Term
|
Definition
|
|
Term
|
Definition
| one amp = one coulomb of charge per second |
|
|
Term
|
Definition
| -1.602 x 10 ^ -19 coulombs |
|
|
Term
| 40 amp circuit how many coulombs per second? |
|
Definition
|
|
Term
| to find the total charge passed through a circuit |
|
Definition
| multiply time (in seconds) by # of amps passed through |
|
|
Term
| to find # of electrons passed through a circuit |
|
Definition
| multiply # coulombs by the charge of an electron (750C x [1/1.602x10^-19]) |
|
|
Term
| how to type 3.09 x 10^19 into excel |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| actual yield / theoretical yield x 100% |
|
|
Term
|
Definition
| - C calorimeter X Temperature change |
|
|
Term
| Delta H mol (enthalpy change per mol of fuel burned) |
|
Definition
| Q rxn / n burned (mols fuel burned) |
|
|
Term
| Delta H G (enthalpy change per gram of fuel burned) |
|
Definition
1) delta H mol / molecular mass of fuel
2) Q rxn / mass burned |
|
|
Term
| how to calculate energy of one photon |
|
Definition
|
|
Term
|
Definition
| plancks constant, 6.626x10^-34 joules per second |
|
|
Term
|
Definition
| speed of light, 2.9979x10^8 meters per second |
|
|
Term
|
Definition
| wavelength in nanometers (must be converted to meters in energy equation) |
|
|
Term
| how to convert from nanometers to meters |
|
Definition
| multiply the nanometers by (10^-9) |
|
|
Term
|
Definition
| moles of substance / volume in liters |
|
|
Term
|
Definition
| mass of substance in mg / volume in liters |
|
|
Term
| molarity dilution calculation |
|
Definition
|
|
Term
|
Definition
|
|
Term
| bond angle for trigonal planar |
|
Definition
|
|
Term
| bond angle for tetrahedral |
|
Definition
|
|
Term
| bond angle for trigonal bypyramidal |
|
Definition
|
|
Term
| bond angle for octahedral |
|
Definition
|
|
Term
| bond angle for 2 groups of electrons |
|
Definition
|
|
Term
| bond angle for 3 groups of electrons |
|
Definition
|
|
Term
| bond angle for 4 groups of electrons |
|
Definition
|
|
Term
| define hydrocarbons vapor pressure and solubility |
|
Definition
| high vapor pressure, insoluble |
|
|
Term
| define esters vapor pressure and solubility |
|
Definition
| high vapor pressure, high to moderate solubility |
|
|
Term
| define alcohols vapor pressure and solubility |
|
Definition
| low vapor pressure, high to moderate solubility |
|
|
Term
| molecular mass equation for chapter 8 |
|
Definition
| (Mgas)(R = .0821)(Tbath)/(ambient pressure in atm)(Vbottle volume of gas) |
|
|
Term
|
Definition
| Mincrease (avg) + M correction |
|
|
Term
| equation to find M correction |
|
Definition
| (MM air 29g/mol)(Sample VP atm)(Vbottle in L)/(.0821)(room temp kelvin) |
|
|
Term
| how to determine formula of ester or alcohol |
|
Definition
| divide its molecular mass by 15, round to nearest whole number, for esters 2 of these numbers will be O atoms, for alcohols one will be an O atom |
|
|
Term
| typical vapor pressure of ester and hydrocarbon |
|
Definition
|
|
Term
| typical vapor pressure of alcohol |
|
Definition
|
|
