All reactions involving a change in temperature are exothermic.
a. true
b. false...
Chemistry, 30.09.2019 10:10 eddiewoods1935
All reactions involving a change in temperature are exothermic.
a. true
b. false
Answers: 1
Chemistry, 23.06.2019 11:00, jdisalle2808
Achemist weighed out 101.g of silver. calculate the number of moles of silver she weighed out.
Answers: 2
Chemistry, 23.06.2019 13:30, emmilicious
Malik formed a hypothesis that an increase in atmospheric oxygen levels by 10% would cause red-legged grasshoppers to grow larger than normal. suppose that malik performs an experiment to test his hypothesis. which of these actions would represent a scientific mistake in his experiment? a. he experiments on live grasshoppers instead of preserved ones. b. he focuses on red-legged grasshoppers instead of all kinds of grasshoppers. c. he varies the nitrogen and carbon dioxide levels in the air from one trial to the next. d. he conducts the experiment in a controlled lab setting with a lab partner. e. he measures the mass and length of his specimens at the start of each trial.
Answers: 1
Chemistry, 23.06.2019 15:30, kfull6027
The amount of iron in ore can be quantitatively determined by titrating a solution of the unknown with a standard solution of dichromate, cr2o72−. the net ionic equation is 6fe2+(aq)+cr2o72−(aq)+14h+(aq)→6fe3 +(aq)+2cr3+(aq)+7h2o(aq) part a the titration of 25.0 ml of an iron(ii) solution required 18.0 ml of a 0.230 m solution of dichromate to reach the equivalence point. what is the molarity of the iron(ii) solution?
Answers: 1
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