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Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?
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Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?
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What is the atomic weight of an element if 4 grams of it contains 2.98 x 10^22 atoms?...
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