2.
Ba (s) +
CoBr, (aq) à
BaBr, (aq) +
Co (s)
Given the unbalanced equation...
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Based on the position vs. time graph which velocity vs. time graph would correspond to the data
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Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
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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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