Chemistry, 11.12.2020 06:20 smariedegray
A chemist burns 160.0 g of Al in excess air to produce aluminum oxide, Al2O3. In the experiment she producds 260.0 g of solid aluminum oxide. The balanced chemical equation is: 4 Al + 3 O2 ο 2 Al2O3 a. Determine the theoretical yield. b. Determine the percent yield. 4. In the reaction of Zn with HCl, 140.15 g of ZnCl2 was actually formed, although the theoretical yield was 143 g. What was the percent yield? 5. 12.5 g of copper are reacted with an excess of chlorine gas, and 25.4 g of copper(II) chloride are obtained in the experiment. Calculate the theoretical yield and the percent yield. Cu + Cl2 ο CuCl2
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Chemistry, 22.06.2019 13:00
If two objects at different te,peraure are in contact with each other what happens to their temperature
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Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
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Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) β c2h2 (g) + caoh2 (s) =Ξ΄hβ414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) β 5ch2chco2h (g) =Ξ΄h132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Chemistry, 22.06.2019 21:30
What is the effect of returning nuclear reactor cooling water back into bodies of water?
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A chemist burns 160.0 g of Al in excess air to produce aluminum oxide, Al2O3. In the experiment she...
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