Chemistry question concerning hydrate?

I'm not really sure how to go about this one so any help would be incredible. The question is as follows: a hydrate of copper (II) chloride has the formula CuCl2.xH20. The water in a 3.41 g sample of the hydrate was driven off by heating. The remaining sample had a mass of 2.69 g. Find the number of waters of... show more I'm not really sure how to go about this one so any help would be incredible. The question is as follows: a hydrate of copper (II) chloride has the formula CuCl2.xH20. The water in a 3.41 g sample of the hydrate was driven off by heating. The remaining sample had a mass of 2.69 g. Find the number of waters of hydration (x) in the hydrate. I worked with this for a while and got two different answers (2 and 4). If you could show me the correct steps it would be greatly, greatly appreciated. Thank you all in advance!
4 answers 4