Chemistry, 27.09.2019 06:00 ZVSaniya0420
When heated, calcium carbonate goes through a chemical reaction, and produces calcium oxide (quick lime) powder and carbon
dioxide gas. a chemist performed this reaction in a lab and found that the mass of the calcium oxide (quick lime) was less than the
mass of the calcium carbonate. what is the reason behind this decrease in mass?
a. the carbon dioxide molecules produced were unstable and lighter in mass.
b. calcium oxide crystals produced break up at room temperature, leading to the difference in
c. carbon dioxide is produced, and as a gas, it was not captured to measure its mass.
d.
the calcium oxide crystals produced were unstable and lighter in mass.
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Answers: 2
Chemistry, 22.06.2019 11:00, hannah5143
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
Answers: 2
When heated, calcium carbonate goes through a chemical reaction, and produces calcium oxide (quick l...
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