Chemistry, 06.11.2020 20:30 gabriellax995
An element that is hydrated is heated, turning it anhydrous. is this a chemical or physical change?
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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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An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8
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An element that is hydrated is heated, turning it anhydrous. is this a chemical or physical change?...
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