Which answer below correctly identifies the type of change and the explanation for the change in calcium
carbonate?
physical change because even though a state change was observed, the calcium carbonate
retained its original properties
physical change because even though a particle size change was observed, the calcium
carbonate retained its original properties and was not transformed into a new substance
chemical change because a state change was observed, which indicated that the calcium
carbonate was transformed into a different substance
chemical change because a particle size change was observed, which indicated that the calcium
carbonate was transformed into a different substance
C
Answers: 1
Chemistry, 22.06.2019 14:50
How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.
Answers: 1
Chemistry, 22.06.2019 18:00
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
Answers: 1
Chemistry, 22.06.2019 18:30
The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false
Answers: 1
Which answer below correctly identifies the type of change and the explanation for the change in cal...
Mathematics, 21.07.2019 13:00
Physics, 21.07.2019 13:00
History, 21.07.2019 13:00
Mathematics, 21.07.2019 13:00
History, 21.07.2019 13:00