I want to thank your team (Jeff) for finding a new writer when you were unable to reach my existing writer to revise my paper. I appreciate your professionalism and efforts. Thanks
The mass of the hydrate was 11.3 g.
The same idea you’ve used to determine the formula of a hydrate applies in this case, only this time you’ll have to work backwards from the formula to determine the mass of the hydrate.
So, you know that you’re dealing with copper (II) sulfate pentahydrate, ##CuSO_4 * 5H_2O##. As you can see, for every 1 mole of anhydrous copper (II) sulfate, you get 5 moles of water.
You can use this to determine the percent by mass the water has in the total mass of the hydrate. To do this, use the molar masses of water and of the pentahydrate
##(5 * 18.015cancel(“g/mol”))/(249.685cancel(“g/mol”)) * 100 = “36.1% water”##
SIDE NOTE You multiply the molar mass of water by 5 because you have 5 moles of water per mole of pentahydrate, as mentioned earlier.
This means that you get 36.1 g of water for every 100 g of copper (II) sulfate pentahydrate. Likewise, you get 100 – 36.1 = 63.9 g of anhydrous copper (II) sulfate for every 100 g of pentahydrate.
Since you know the mass of the anhydrous salt, and what percentage of the total mass of the hydrate it has (63.9%), you can determine the mass of the hydrate by
##7.24cancel(“g “CuSO_4) * “100 g pentahydrate”/(63.9cancel(“g “CuSO_4)) = color(green)(“11.3 g”)## ##”pentahydrate”##
Here is a video discussing how to find the empirical formula of copper sulfate.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more