Chemistry, 12.04.2021 14:00 leannamat2106
0.25 g of a hydrocarbon CxHy on combustion forms 0.7860g of carbon(IV)oxide and 0.3210g of water. When the hydrocarbon is vapourised it occupies 80cm3 at s. t.p. Determine the formula of the hydrocarbonâ
Answers: 3
Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
Answers: 1
Chemistry, 22.06.2019 11:30
Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?
Answers: 2
0.25 g of a hydrocarbon CxHy on combustion forms 0.7860g of carbon(IV)oxide and 0.3210g of water. Wh...
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