chemistry 7-3 and 7-4 Flashcards
1
Q
percent composition
A
must add up to a hundred
2
Q
formula mass
A
measured in amu, mass of formula
3
Q
molar mass
A
mass of a mole, measured in grams
4
Q
hydrates
A
compounds with water attached
5
Q
todd arliss
A
tiger shark
6
Q
empirical formula
A
simplest ratio of elements
7
Q
first step of finding emp formula
A
- change percent to grams
8
Q
second step of finding emp formula
A
- change grams to moles
9
Q
third step of finding emp formula
A
- divide by smallest amount
10
Q
fourth step of finding emp formula
A
- write formula
11
Q
molecular formula
A
multiply number by the emp formula
12
Q
number =
A
molecular mass / emp formula mass
13
Q
after you get the number you?
A
multiply it by emp formula.
