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Chemistry, 22.06.2019 13:30
How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123
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Chemistry, 22.06.2019 23:00
In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next
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Chemistry, 23.06.2019 02:00
Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?
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Chemistry, 23.06.2019 03:30
In general metals get as you move from left to right across the periodic table.
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Why is it expensive to bring electricity into urban areas?...
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