Chemistry, 25.08.2019 09:20 disneyshree9427
Acube of limestone is slower to react in a beaker of acetic acid than the same amount of limestone in powder form. which is the best reason that the cube takes longer to react? . a. it is under greater pressure, which requires more energy to break bonds.. b. it is more concentrated, which causes fewer collisions of reactant molecules.. c. it has less surface area, which causes fewer collisions of reactant molecules. d. it has reactants with higher activation energies so it takes longer to break bonds.
Answers: 1
Chemistry, 22.06.2019 11:00
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
Chemistry, 22.06.2019 13:30
1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6
Answers: 2
Chemistry, 23.06.2019 00:00
(04.05 hc) analyze the given diagram of the carbon cycle below. part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.
Answers: 3
Acube of limestone is slower to react in a beaker of acetic acid than the same amount of limestone i...
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