# A solid hydrate weighing 2.682 grams was heated to drive off the water. A solid anhydrous residue...

## Question:

A solid hydrate weighing 2.682 grams was heated to drive off the water. A solid anhydrous residue remained, which weighed 1.420 grams.

a. Calculate the percent of water in the hydrate.

b. If the anhydrous residue has a formula weight of 142, how many moles of water are present in one mole of the hydrate?

## Hydrated Compound:

The hydrated compound contains a water molecule as the integral part of its molecular formula. For example, the formula for the hydrated copper sulfate is {eq}\rm CuSO_4\cdot 5H_2O {/eq}. It contains 5 molecules of water in its molecular formula.

## Answer and Explanation: 1

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View this answerWe are given that a solid hydrate weighing 2.682 grams was heated to drive off the water. A solid anhydrous residue remained, which weighed 1.420...

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Chapter 9 / Lesson 8Learn the anhydrate definition and what a hydrated compound is. Understand what an anhydrate is, the hydrate formula, and how to find the formula of the hydrate.

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