# A 6.165-gram sample of an unknown hydrate of cobalt(II) bromide is heated until all the water of...

## Question:

A 6.165-gram sample of an unknown hydrate of cobalt(II) bromide is heated until all the water of hydration is removed. The {eq}CoBr_2 {/eq} that remains has a mass of 4.637 grams. What is the value of {eq}n {/eq} in the formula {eq}CoBr_2 \cdot nH_2O {/eq} for this hydrate?

## Hydrated Metal Salts:

Often metal salts are found in their hydrated forms. These hydrated metal salts contain water molecules that reside in the crystal structures. The physical properties of metal salts are affected by the presence of these water molecules.

## Answer and Explanation: 1

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View this answerThe mass **(m)** of water present in the hydrated {eq}\rm CoBr_2
{/eq} is calculated from the difference in the mass between hydrated {eq}\rm...

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Chapter 28 / Lesson 24What is molar mass? Learn the definition of molar mass and how it relates to the periodic table. See examples of how to use the molar mass formula.

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