Molecular Formulas

Question 1

Caffeine

Answer 1

C8 H10 N4 O2

Question 2

Laughing gas
Nitrous oxide/ Dinitrogen oxide

Answer 2

N2 O

Question 3

Water
Dihydrogen oxide

Answer 3

H2 O

Question 4

Ammonia
Trihydrogen nitride

Answer 4

N H3

Question 5

Dry ice
Solid carbon dioxide

Answer 5

C O2

Question 6

Table salt
Sodium chloride

Answer 6

Na Cl

Question 7

Marble, chalk, limestone
Calcium carbonate

Answer 7

Ca C O3

Question 8

Quicklime
Calcium oxide

Answer 8

CaO

Question 9

Slaked lime
Calcium hydroxide

Answer 9

Ca (OH)2

Question 10

Baking soda
Sodium hydrogen carbonate

Answer 10

Na H C O3

Question 11

Washing soda
Sodium carbonate decahydrate

Answer 11

Na2 C O3 • 10H2O

Question 12

Epsom salt
Magnesium sulfate heptahydrate

Answer 12

Mg S O4 • 7H2O

Question 13

Milk of magnesia
Magnesium hydroxide

Answer 13

Mg (OH)2

Question 14

Gypsum
Calcium sulfate dihydrate

Answer 14

Ca S O4 • 2H2O

Question 15

Chalcopyrite

Answer 15

CuFeS2

Question 16

Aspirin
Acetylsalicylic acid

Question 17

Dolomite

Answer 17

Ca C O3 • Mg C O3

Question 18

KHP
Potassium hydrogen phthalate

Answer 18

K H C8 H4 O4

Question 19

Sodium azide

Answer 19

-automobile air bags

Na N3

Question 20

Glauber’s salt

Answer 20

Na2 S O4 . 10H2O

Question 21

Rochelle salt

Answer 21

K N O C4 H4 O6 .4H2O

Question 22

Melamine

Answer 22

C3 H6 N6

Question 23

Saltpeter
Potassium nitrate

Answer 23

K NO3
Gunpowder
Charcoal, sulfur, saltpeter

Question 24

Olvanil

Answer 24

C26 H43 N O2

Question 25

Calgon
Sodium hexametaphosphate

Answer 25

Na2[Na4(PO3)6]

Question 26

Hydrazine

Answer 26

N2H4

Question 27

Nitroglycerin

Answer 27

C3 H5 N3 O9

Question 28

Cleveite

Answer 28

U O2

Question 29

Chlorophyll

Answer 29

C55 H72 Mg N4 O5

Question 30

Human DNA

Answer 30

C39 H50 O22 N15 P3

Question 31

Alum

Answer 31

Al2 (SO4)3 . 14H2O