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Calcium atoms have 20 protons, but tend to form ions with a 2+ charge. How many electrons does the ion have? *
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Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)
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Chemistry, 21.06.2019 20:20
Calculate the molarity of the solution. 6.02 x 1022 molecules of hci (molecular weight = 36.5 g/mole) in 2.0 liters of water m
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Chemistry, 21.06.2019 21:30
How air particles exert a pressure on the inside of the balloon
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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.
Answers: 2
Calcium atoms have 20 protons, but tend to form ions with a 2+ charge. How
many electrons does the...
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