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Chemistry, 22.06.2019 09:40, cheesecake1919
Which diagram shows the correct way to represent an ionic compound of magnesium oxide?
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Chemistry, 22.06.2019 12:30, masteroftheuniverse3
When a scientific theory has been tested and proved by the scientific community, it becomes a law
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Chemistry, 23.06.2019 06:50, isabellainksow87vn
The student repeated the experiment using a higher concentration of acid. the same volume of acid and the same mass of magnesium ribbon were used. what volume of hydrogen gas would have been produced after 60 seconds?
Answers: 1
Chemistry, 23.06.2019 07:30, jessicawelch25
In a laboratory determination of the atomic weight of tin, a sample of tin is weighed in a crucible. nitric acid is added, and the reaction proceeds to give a hydrated tin(iv)oxide plus no2and h2o. the hydrated tin(iv)oxide is then heated strongly and reacts as follows: sno2.xh2o(s)sno2(s)+ xh2o(g)the sno2is finally cooled and weighed in the crucible. explain the effect on the calculated atomic weight of tin that would result from each of the following experimental errors: (a)considerable spattering occurs when the nitric acid is added to the tin.(b)the hydrated tin(iv)oxide is not heated sufficiently to change it completely to tin oxide.
Answers: 2
Name two things that would be different on our planet if we did not have a magnetic field....
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