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Flashcards in Moles, Horrific Moles Deck (16):
0

Atomic number

Amount of protons

1

Mass number

Amount of protons + neutrons

2

Isotopes

Same atomic number
Different mass

3

RFM (Mr)

Add all the RAM's of a substance

4

Mole

Mass of 1 mole of atoms expressed in grams

5

Avogadro constant

6 x 10^23 atoms of 1 mole

6

RAM (Ar)

Chlorine isotopes
Cl-35 (75%). (35x75) +
Cl-37 (25%). (25x37) = 3550
1 atom = 35.5

7

Solid- mole triangle

Mass
n / RFM

Mass in grams
Number of moles
RFM

8

Solution-mole triangle

n
c / v

Number of moles
Concentration
Volume

9

Gas- mole triangle

V
n / 24000

Volume
Number of moles
24000cm^3 / 24dm^3

10

Empirical formula

% of molecule / RAM = moles of atom

47.06% oxygen / 16 = 2.94 2.94 / 1.96 = 1.5
52.95% aluminium/ 27 =1.96 1.96 / 1.96 = 1

1:1.5 ---> 2:3 ratio

11

Empirical formula

10g hydrogen
80g oxygen

mass/RAM = amount of atoms
10 /1 =10mol
80 /16 =5mol

Find ratio

12

Amount dissolved (mol)

Volume of solution (cm) x concentration (dm) / 1000

13

Percentage yield

(Yield obtained / rhetorical yield) x 100

14

Mass of product by electrolysis

Current x time = charge

(RFM of product x mole of product) / ( moles of electrons x 96500)
X charge

15

Electrolysis equation steps

Q=I x T

Charge / 96000 = moles of electrons
(divide this with how many moles of electrons e-) x RAM