So confused need help with this graph and finding the correct answer

Chemistry
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    The number of grams of CuSO4 ⋅ 5 H2O that will dissolve in 100 g of H2O at 100°C.

Oct 4th, 2015

Thank you for the opportunity to help you with your question!

can u please provide the graph?

Please let me know if you need any clarification for the doubts. I'm always happy to answer your questions. Looking forward to help you again. thank you. :)
Oct 4th, 2015

The Solubility of copper sulphate is : 390 g/L

So For 100 g of water, volume = 100 ml ( assuming density = 1 gm/ml)

so the amount of copper sulphate required is 390 / 10 =39 grams.

Oct 4th, 2015
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Oct 4th, 2015

The number of grams of water required to dissolve 4.0 g of CuSO4 ⋅ 5 H2O at 100°C. 

Oct 4th, 2015

from the graph we can see that 160 g of copper sulphate dissolves in 100 g of water, so for 4 g of copper sulphate at 100degree celcius we need 100/ 160 * 4 = 2. 5 grams

so we need 2. 5 grams of water at 100°C.

Oct 4th, 2015
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so how could i figure out  The number of grams of water required to dissolve 18 g KNO3 at 100°C.

Oct 4th, 2015

you need to match the values by interpreting through the graph. on the x and y axis

Oct 4th, 2015
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i just dont get it, the graph makes no sense to me :(

Oct 4th, 2015

you have to  understand the graph.

Oct 5th, 2015

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Dec 3rd, 2016
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