Chemistry, 11.07.2019 10:40 RiyaTailz3346
If you change the number of protons in an atom, you get a completely different a. model b. compound c. molecule d. element
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Which of these are physical changes in matter? check all that apply boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese
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Chemistry, 23.06.2019 05:00
1. true or false: minerals are inorganic. true false 2. inorganic means that something has never been found alive 3. halite is another name for and is a mineral with a cubic crystal pattern. table salt rock salt
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Chemistry, 23.06.2019 07:20
Which of the following are acids or bases? 1. sodium hydrogen 2. barium hydroxide solution 3. carbonate solution
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Chemistry, 23.06.2019 07:30
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)ď‚®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
If you change the number of protons in an atom, you get a completely different a. model b. compound...
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