Answer:In regards to writing the formula, we know that magnesium has a charge of 1+ and sulfate, SO4, has a charge of 1-. Sulfate is a polyatomic ion so the charge of the whole thing is (SO4)1-. When you combine them you end up with MgSO4 and the "heptahydrate" is seven water molecules.
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ok off topic but are you in k12 loll
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Each element consists of indivisible, minute particles called atoms.
All atoms of a given element are identical.
Atoms of different elements have different masses.
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Maybe lol, because if one is an in and another is a neutral, it makes two balls, then afterwards, you'll need a big stick!
