What is the net ionic charge of a calcium ion?
a. +1
b. -1
c. -2
d. +2...
Chemistry, 29.08.2019 13:50 jahnoibenjamin
What is the net ionic charge of a calcium ion?
a. +1
b. -1
c. -2
d. +2
Answers: 2
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How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?
Answers: 3
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Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
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Answers: 3
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How many atoms or molecules are there in a mole of a substance?
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