Chemist relate units of counting, of mass, and of volume to a single quantity called the ___.
mole
The number of representative particles in a mole of substance is called ___.
Avogadro's number
To find the mass of a mole of a molecular compound, scientist add together the ___ of the atoms making up the molecule.
mass
When you substitute the unit grams for amu, you obtain the ___ of a molecular compound.
molecular mass
Because the representative particle of an ionic compound is its formula unit, the mass of one mole of an ionic compound is called its ___.
formula mass
There are ___ representative particles in a mole of any substance.
6.02x10��
the atoms, molecule, or ions present in a substance
representative particles
6.02x10��
Avogadro's number
the mass of one mole of a molecular compound
gram molecular mass
SI unit that measure the amount of a substance
mole
the atomic mass of an element expresses in grams
gram atomic mass
formula mass of an ionic substance expressed in grams
gram formula mass
(gaa, gma, gfm, mm) The mass, in grams, of one mole of an ionic compound
gfm
(gaa, gma, gfm, mm) The mass, in grams, of one mole of an element
gam
(gaa, gma, gfm, mm) The mass, in grams, of one mole of a molecular compound
gmm
(gaa, gma, gfm, mm) The general term used to identify the mass, in grams, of one mole of particles.
mm
(gaa, gma, gfm, mm) 1 mol sodium chloride, NaCl = 58g
gfm
(gaa, gma, gfm, mm) 1 mol water, H20 = 18g
gmm
(gaa, gma, gfm, mm) 1 mol gold, Au = 197g
gam
At STP (0 degree C and 1 atmosphere pressure) one mole of any gas occupies a volume of what?
22.4
The quantity one mole of any gas occupies at 22.4 L is called what?
molar volume
To determine the volume in liters of 2.0 mol of SO2 gas at STP, what would you use as a conversion factor?
22.4L/ mol
What is expressed in the units g/L, is used as a conversion factor when converting from volume to molar mass?
density
When converting between numbers of representative particles, masses, and volumes, you must always convert to what as an intermediate step?
mole
what is 22.4 L of a gas at STP called?
molar volume
what is 101.3kPa or 1 atm called?
standard pressure
what is 0 degree C called?
standard temperature
what is mass (in grams) of one mole of a substance?
molar mass
What is a means of relating mass, number of representative particles, and gaseous volume of a substance called?
molar road map
what is aluminum (atoms, molecules, or formula units)
atom
what is Br2
molecule
what is C3H8
molecule
what is PCl3
molecule
what is HF
molecule
What is HNO3?
molecule
what is CuS
formula unit
what is Mg3N2
formula unit
remember that molecules are ...
*nonmetal and a nonmetal
What is the percent by mass of each element in a compound?
percent compostition
The percent by mass of an element in a compound is the number of grams of the element per what amount of grams of the compound multiplied by 100%.
100
to calculate the percent by mass of an element in a known compound, divide the mass of the element in one mole by what and multiply by 100%?
atomic mass
What formula represents the lowest what ratio of the elements in a compound?
empirical formula; whole number
what formula of a compound is either the same as tits empirical formula or it is some whole number multiple of it?
molecular
What describes the actual number of atoms of each element in a molecule of a compound?
molecular formula
What is the lowest whole number ratio of atoms of the elements in a compound?
empirical formula
What is the percent mass of each element in a compound?
molecular formula
how to find the gmm?
you add all of the molecules of the formula unit. for example: C6H12O6 = 6(12)+ 12(1)+ 6(16)
how to find the gfm?
...