A hydrated salt is a solid that includes water molecules within its crystal structure. A student heated a 9. 10-gram sample of a hydrated salt to a constant mass of 5. 41 grams. What percent by mass of water did the salt contain?.

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answer:

My puppy

Explanation:

hopefully this helped :)

answer:

Rudy earned 63.5

Explanation:

So if all three friends earned 22 dollars and one got three times the amount of others he would have 66. 22×3 = 66. Then you would subtract 66-2.50= 63.5