Answer:
A chemical reaction occurs when a substance is rearranged to form a new substance. It is possible to identify if this has taken place from one of the five signs of chemical change. <u><em>These changes include color change, temperature change, precipitate formation, gas production and light emission.</em></u>
Explanation:
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Answer:
<h3>0.4998545877562891</h3>
Explanation:
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Moving the electron away from the nucleus requires energy, so the electrons in the outer shell will have more energy than ones in the inner shell. Electrons always have a charge of -1, so the charge in the inner and outer shell will be the same. Therefore the answer is 3
Answer:
Explanation:
Amount of silver
= 1.25 x .9 = 1.125
amount of copper = 1.25 x .1 = .125
equivalent weight of silver = 108
gram equivalent of silver in the alloy = 1.125 / 108 = .01041
This will precipitate in the form of copper in equivalent amount of copper
equivalent of copper precipitated = .01041
grm of copper for silver = .01041 x equivalent weight of copper
= .01041 x 63.5 / 2 = .3305 gram
Total copper precipitated
= .125 + .3305
= .4555 gm