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Chemistry, 22.06.2019 00:30
This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.
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Chemistry, 22.06.2019 13:00
The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false
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Chemistry, 22.06.2019 14:30
Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?
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Students combine a magnesium nitrate solution with a sodium hydroxide solution at 20°c. A precipitat...
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