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Chemistry, 21.06.2019 22:00
Afamily is one another name for a group on the table of elements.
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Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
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Chemistry, 23.06.2019 10:30
Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol
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What is Ką for H3BO3(aq) = H+(aq) + H2B03 (aq)?...
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