What is the mass number of an
atom which contains 21 electrons,
21 protons, and 24 neutrons?<...
Chemistry, 04.09.2020 06:01 lizdeleon248
What is the mass number of an
atom which contains 21 electrons,
21 protons, and 24 neutrons?
21
66
42
45
Answers: 2
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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.
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How many neutrons does an element have if its atomic number is 50 and its mass number is 166
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