basic approach to chemical equilibrium Flashcards
scientists throughout the world are adopting a standardized system of units known as
international system of units (SI)
what is the name unit and abbreviations of
1) mass
2) length
3) time
4) temp
5) amt. of substances
6) electric current
7) luminous intensity
1) kilogram (kg)
2) meter (m)
3) second (s)
4) kelvin (K)
5) mole (mol.)
6) ampere (A)
7) candela (cd)
it is a non-SI unit of length that is widely used to express the wavelength of very short radiation
ångstrom unit, Å
typical X-radiation lies in the range of
0.1 to 10Å
it is the SI unit for the amount of a chemical species
mole (mol)
avogadro’s number
(6.022 × 1023)
it is the mass of a substance per unit volume
density
what is the SI Unit of Density
kg/L or g/mL
it is the ratio of the mass of a substance to the mass of an equal volume of water
specific gravity
dilution of samples: always add concentrated ____ to ____ but never ____ when diluting _____
acid to water
water to acid solution
in dilution of solutions:
initial concentration times inverse of dilution factor =
final concentration
any dilution where the concentration decreases by the same quantity in each successive step
serial dilution
it produces solutions of progressively lower known concentrations from a concentrated stock solution. It does this through a series of step-wise dilutions in separate containers
serial dilution
a measured fraction of the volume of a liquid sample
aliquot
it is defined as the mass relationships among reacting chemical species.
stoichiometry
