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Flashcards in Principles of Chemistry Deck (10):
1

define a mixture

components in VARIABLE proportion and NOT chemically bonded to each other

2

give the formula for relative atomic mass

sum of (isotope mass x isotope abundance) / 100

3

what is Avogadro's number

6.02 x 10^23

4

give the formula for volume of a gas

V= mol x 24000

5

give the formula for percentage yield

% yield = (actual product/theoretical amount) x 100%

6

give the two formulas to calculate charge

charge= current x time
charge = mol of e- x 96500

7

define empirical formula

empirical formula of a compound gives the SMALLEST RATIO of elements in the compound

8

define molecular formula

it gives the actual number of ATOMS of EACH ELEMENT in a MOLECULE of the compound

9

how do you find molecular formula

1. find empirical formula
2. find formula mass of 1^
3. divide formula mass by the empirical formula mass 2^
4. multiply empirical formula mass by answer in 3^

10

define a compound

two or more different elements in FIXED proportions, joined by strong BONDS