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## sara1234 Group Title What number would you write before water in the formula for calcium carbonate nonahydrate? 4 5 7 9 one year ago one year ago

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1. undeadboss Group Title

this is an algebra room not science

2. sara1234 Group Title

opss does anyone know the answer thou?

3. undeadboss Group Title

i dont thats for sure...sorry

4. oldrin.bataku Group Title

Calcium carbonate nonahydrate is a hydrous compound of calcium carbonate $$CaCO_3$$ and water $$H_2O$$. The number of $$H_2O$$ molecules is denoted by a Greek prefix in the name of the hydrate; nona- means nine. This means we can write our compound as $$CaCO_3\cdot 9H_2O$$. http://en.wikipedia.org/wiki/Hydrate#Inorganic_chemistry