ALL FORMULAS FOR MASS % MOLAR MASS ETC

Cation + Anion = Ionic Compouind

Ionic Compounds names with Metal + base name of non metal + ide

Binary Ionic Compounds Metal + charge of metal in roman numerals + base name of non metal + ide

Molecular Compounds only nonmetal compound prefix + name of 1st element + prefix name of second element ending in ide

Dont use prefix when there is only 1

Naming Acids
molecular compounds tht form ions when dissolved in water
composed of hydrogen , written first, one or more nonmetals second

Two types : Binary acids/ Oxyacids
two elements/ more , starts with hydro, ends in ic     Oxyacids can be ate or ite, never start with hydro

Mass of moleculr or formula unit

FORMULA MASS = (# OF ATOMS IN FIRST ELEMENT x ATOMIC MASS OF 1ST ELEMENT) + (#OF ATOMS IN 2ND x ATOMIC MASS OF SECOND)

BInary Acid - Hydro + something else
Molecular Compounds - Two non metals
Ionic Compound - Metal and nonmetal

oxyacid - more than two

Calculate number of moles -
                                 Agravado’s Number - 6.022 × 10²³

Use given number of molecules

Moles = # of molecules/ AG # (molecules/molecules over mol)

The given mass/ number of moles ^

Finding Molar Mass

    N = m/M

m = mass M = molar mass BTW - SMALLEST NUMBER IS MORE MOLES?

H2 - 2 C2 - 24 O4 - 64 = 90

Calculate Mass % - (total mass of element/molar mass of compound) x 100

Work backwards to find element
# of atoms/AG # then mass/by that #

Mass of molecules in compound
Find molar mass
convert molecules to mass - given mass/AG #

Find mass in grams - m(mass)= n . M

Finding atoms in element
Divide mass of element by molar mass

moles to atoms using AG # atoms/mol

Mass of element in compound
Find mass of missing element or the element in the question
convert mass of elements to moles - mass in compound/mass of element
divide bigger # of moles^ by smallest to get smallest whole number and that is the ratio