More Mixed Naming Fun!
Name these compounds. They may be either ionic or covalent.
1)
LiOH __________________________________________
2)
PBr3 __________________________________________
3)
Na2SO4 __________________________________________
4)
(NH4)2S __________________________________________
5)
CaCO3 __________________________________________
6)
CF4 __________________________________________
7)
NaNO3 __________________________________________
8)
P2S3 __________________________________________
9)
Al(NO3)3 __________________________________________
10)
Mg(OH)2 __________________________________________
Write the formulas for the following compounds. Remember, they may be either ionic or covalent
compounds, so make sure you use the right method!
11)
potassium oxide __________________________________________
12)
phosphorus tribromide ________________________________________
13)
calcium hydroxide __________________________________________
14)
dinitrogen sulfide __________________________________________
15)
carbon monoxide __________________________________________
16)
diboron tetrahydride __________________________________________
17)
phosphorus pentabromide _____________________________________
18)
sulfur dichloride __________________________________________
19)
sodium carbonate __________________________________________
20)
aluminum acetate __________________________________________
More Mixed Naming Fun! - Answers
Name these compounds. They may be either ionic or covalent.
1)
LiOH
lithium hydroxide
2)
PBr3
phosphorus tribromide
3)
Na2SO4
sodium sulfate
4)
(NH4)2S
ammonium sulfide
5)
CaCO3
calcium carbonate
6)
CF4
carbon tetrafluoride
7)
NaNO3
sodium nitrate
8)
P2S3
diphosphorus trisulfide
9)
Al(NO3)3
aluminum nitrate
10)
Mg(OH)2
magnesium hydroxide
Write the formulas for the following compounds. Remember, they may be either ionic or covalent
compounds, so make sure you use the right method!
11)
potassium oxide
K2O
12)
phosphorus tribromide
PBr3
13)
calcium hydroxide
Ca(OH)2
14)
dinitrogen sulfide
N2S
15)
carbon monoxide
CO
16)
diboron tetrahydride
B2H4
17)
phosphorus pentabromide
PBr5
18)
sulfur dichloride
SCl2
19)
sodium carbonate
Na2CO3
20)
aluminum acetate
Al(C2H3O2)3
Percentage Composition Worksheet
Give the % composition of all elements in these compounds. Show all work!
________________________________________________________________
1)
ammonium sulfite
% N ______
% H ______
% S ______
% O ______
________________________________________________________________
2)
aluminum acetate
% Al ______
% C ______
% H ______
% O ______
________________________________________________________________
3)
sodium bromide
% Na ______
% Br ______
________________________________________________________________
4)
copper (II) hydroxide % Cu ______
% O ______
% H ______
________________________________________________________________
5)
magnesium carbonate % Mg ______
% C ______
% O ______
________________________________________________________________
6)
iron (II) phosphate
% Fe ______
% P ______
% O ______
________________________________________________________________
7)
beryllium nitride
% Be ______
% N ______
________________________________________________________________
8)
potassium cyanide
% K ______
% C ______
% N ______
________________________________________________________________
9)
manganese (III) nitrate
% Mn ______
% N ______
% O ______
________________________________________________________________
10)
lithium phosphide
% Li ______
% P ______
________________________________________________________________
11)
nickel (III) sulfate
% Ni ______
% S ______
% O ______
________________________________________________________________
Percentage Composition Worksheet – Answer Key
Give the % composition of all elements in these compounds. Show all work!
________________________________________________________________
1)
ammonium sulfite
%N
24.1
%H
6.9
%S
27.6
%O
41.3
________________________________________________________________
2)
aluminum acetate
% Al 13.2
%C
35.3
%H
4.4
%O
47.1
________________________________________________________________
3)
sodium bromide
% Na 22.4
% Br 77.6
________________________________________________________________
4)
copper (II) hydroxide % Cu 65.1
%O
32.8
%H
2.1
________________________________________________________________
5)
magnesium carbonate % Mg 28.8
%C
14.2
% O 56.9
________________________________________________________________
6)
iron (II) phosphate
% Fe 46.8
%P
17.3
%O
35.8
________________________________________________________________
7)
beryllium nitride
% Be 49.1
%N
50.9
________________________________________________________________
8)
potassium cyanide
%K
60.1
%C
18.4
%N
21.5
________________________________________________________________
9)
manganese (III) nitrate
% Mn 22.8
%N
17.4
%O
59.8
________________________________________________________________
10)
lithium phosphide
% Li
40.0
%P
60.0
________________________________________________________________
11)
nickel (III) sulfate
% Ni 28.9
%S
23.7
% O 47.3
________________________________________________________________
Percent Composition and Molecular Formula Worksheet
1)
What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and
29.0% oxygen?
2)
If the molar mass of the compound in problem 1 is 110 grams/mole, what’s the molecular
formula?
________________________________________________________________
3)
What’s the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and
65.0% oxygen?
4)
If the molar mass of the compound in problem 3 is 73.8 grams/mole, what’s the molecular
formula?
Percent Composition and Molecular Formula Worksheet Solutions
1)
What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and
29.0% oxygen?
C3H3O
2)
If the molar mass of the compound in problem 1 is 110 grams/mole, what’s the molecular
formula?
C6H6O2
________________________________________________________________
3)
What’s the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and
65.0% oxygen?
Li2CO3
4)
If the molar mass of the compound in problem 3 is 73.8 grams/mole, what’s the molecular
formula?
Li2CO3 (In this case, the molecular and empirical formulas are the same, a frequent
occurrence for inorganic compounds)
Molecular Formula Worksheet
Write the molecular formulas of the following compounds:
1)
A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole.
2)
A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole.
3)
A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole.
4)
A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole.
Molecular Formula Worksheet ANSWER KEY
Write the molecular formulas of the following compounds:
1)
A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole.
C4O2H8
2)
A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole.
C8H8O2
3)
A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole.
C2F2Br2O2
4)
A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole.
C2H8N