Chemistry Chapter 6
Terms
undefined, object
copy deck
- Diatomic Elements
- elements that, in there elemental state, exist in nature as pairs of bonded atoms.
- mole
- the number of particles equal to the number of atoms in exactly 12g of Carbon 12
- Avagadro's Number
-
a) Its the number of particles in a mole
b) its 6.02x10^23 - Atomic Mass
- the wighted average atomic mass of all naturally occuring atoms of an element (includes isotopes and their abundances)
- Gram atomic mass
- the mass in grams of one mole of atoms in an element
- molecular mass
- the sum of all the atomic masses of all the atoms in a molecule
- gram molecular mass
- the mass in grams of one mole of molecules
- formula mass
- the sum of the atomic masses of all of the atoms in a formula unit
- gram formula mass
- the mass in grams of one mole of formula units in a compound
- Molar Gas Volume
- one mole of any gas at STP has a volume of 22.4L
-
Empirical Formula Problems
a)40.2%K, 26.9%Cr, 32.9%O
b)21.8%Mg, 27.9%P, 50.3%O -
a)
b)