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Consider the following system at equilibrium. caco3(s) ca2+(aq) + co32–(aq) the addition of which compound will cause a shift in equilibrium because of a common ion effect? ccl4 co2 cuso4 na2co3

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Compare and contrast physical changes with chemical changes.