Biology, 19.12.2019 02:31 officialrogerfp3gf2s
An iron nail (fe) is placed into a solution of copper(ii) sulfate (cuso4). after some time, the blue color of the copper (ii) sulfate disappears and some copper-colored solid (cu) is found on the surface of the nail. the solution now contains iron (ii) sulfate (feso4), and the container feels warmer than before the reaction.
1. does this reaction absorb or release absorb or release energy? how do you know?
2. what do the color changes indicate?
Answers: 2
Biology, 21.06.2019 22:00
Which is the correct first step in finding the area of the base of a cylinder with a volume of 26x cubic meters and a height of 6.5 meters? v=bh 6.5=b(26x) v=bh v=26pi+(6.5) v=bh v=26pi(6.5) v=bh 26pi=b(6.5)
Answers: 1
Biology, 21.06.2019 22:30
Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.
Answers: 1
An iron nail (fe) is placed into a solution of copper(ii) sulfate (cuso4). after some time, the blue...
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