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Chemistry, 23.06.2019 04:10
Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction
Answers: 1
Chemistry, 23.06.2019 09:30
The earth's surface is (science) a: studied using seismic waves b: constantly changing over time c: only studied indirectly d: the same today as million of years
Answers: 1
Chemistry, 23.06.2019 10:00
1.9 mol hcl and 3.9 mol naoh react according to the equation hcl + naoh ββ nacl + h2o . if the limiting reactant is hcl, calculate the amount of nacl formed.
Answers: 1
Elements in the 2nd family/group gain or lose electrons? *...
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