# Calculate the percentage of water of hydration in barium chloride crystals (the atomic weight of Ba is about 137.4 g/mol)?

##### 1 Answer

14.75%

#### Explanation:

You'll need to start off by knowing the formula of the barium chloride crystals, which is barium chloride dihydrate,

When the 1 mole of hydrate crystals are heated, you will be left with 1 mole of the anhydrous crystal (

To calculate the percentage of water of hydration, we'll need to find the molar mass of water (

We can then proceed to calculating the percentage of water of hydration in barium chloride crystals: