Poly Atomic Ions and Metric units

Question 1

NH₄

Answer 1

Ammonium

Question 2

H₃O+

Answer 2

Hydronium

Question 3

CH₃CO₂-

Answer 3

Acetate

Question 4

HCO₃

Answer 4

Bicarbonate

Question 5

CN-

Answer 5

Cyanide

Question 6

OH-

Answer 6

Hydroxide

Question 7

NO₃-

Answer 7

Nitrate

Question 8

NO₂

Answer 8

Nitrite

Question 9

CI0₄-

Answer 9

Perchlorate

Question 10

CO₃²-

Answer 10

Carbonate

Question 11

SO₄^2-

Answer 11

sulfate

Question 12

SO₃^2-

Answer 12

sulfite

Question 13

PO₄^3-

Answer 13

Phosphate

Question 14

milli

Answer 14

10^-3

Question 15

centi

Answer 15

10^-2

Question 16

Kilo

Answer 16

10^3

Question 17

mega(M)

Answer 17

10^6

Question 18

what are the steps to determining the molecular formula given present composition for Atoms in the formula?

example: what is the molecular formula of the substance that is 70% by mass iron and 30% by mass oxygen

Answer 18

1) start w/ 100 grams of substance

70g Fe and 30g O = 100g total

2) figure out how many moles of each substance are present in

70g Fe X (1 mol fe)/56g) and 30g 0 X(1mol O/16g)

3) simplfy fractions for each

70g Fe/(56g/mol) = 5/4 and 30 g O/(16g/mol)= 15/8

4) flip one of the fractions and multiply both fractions together
5) simplify final fraction and one side will be Fe and the other will be O
6) write emprical formula

Question 19

List steps to determin limiting reagent?

Answer 19

1) Find molecular weights of reactants
2) Find # of moles of each reactant from supplied weights
3) compare reactants to eachother to see which will run out first

Question 20

what are the 7 rules to assigning oxidation states

Answer 20

1) elements in standard state =0
2) sum of oxidative states in compound must equal 0 or charge
3) group 1 metals = +1 and Group 2 metals= +2
4) Hydrogen =+1 bound to something more Eneg than C and 0 when bound to C
5) flourine = -1
6) oxygen =-2
7) other Halogens = -1

Question 21

What are the exceptions to the Oxidation state rule concerning Oxygen?

Answer 21

Peroxides (H202 and Na2O2)

Question 22

How is the oxidation number of a transition metal stated?

Answer 22

roman number

Question 23

what does the romen number in iron(II) chloride and Iron (III) chloride mean?

Answer 23

The oxidative state for that element.