Formulas of Hydrates

Bellringer

• What is the molar mass of H₂O?

• What is the percent composition of H₂O?

• If you have 6 moles of water, how many grams of water do you have?

Objectives

• I will be able to calculate percent composition of water in a hydrate.

• I will experiment with a hydrate to find the percent water in it.

Hydrates

• ​Crystals which contain water molecules

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• Contains a specific ratio of water in a compound

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Open Ended

What is a hydrate?

Percent Composition of Water

Multiple Choice

How many moles of water are in $$2\ NaCl\ \circ\ 5\ H_2O$$ ?

• 2

• 5

• 3

• 10

Examples

Poll

How well do you understand the lesson today?

• Super confident

• Some practice could help

• A little confused

• No clue