state and explain the changes in mass that occur when zinc metal is heated in an open crucible?
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Answer:
Hydrates are ionic crystalline compounds that include water in their lattices. The water is able to provide stability to the structure due to its strong dipole. To find the hydration number of a compound, you can heat it to drive off the water, which allows you to quantify the escaped water and compare it with the amount of remaining anhydrous salt
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Explanation:
When copper is heated in an open crucible the mass increases because copper combines with atmospheric oxygen to form black copper oxide.
2Cu + O2 →2CuO.
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