Monday
December 9, 2013

Total # Posts: 282

Math
Solve the piece wise function when f(17) f(x) = f(x-3)+2 if x > 10 -5 if x <= 10 Would the answer be 1? Thanks

Chemistry
A mole of a pure substance contains 6.02x10^23 atoms. Alway true, sometime true or never true? -I was thinking sometime true since a pure substance can be like H2O but H2O have 3 "atoms" (Is this what you call individual part of H2O?). Each "atoms" have 6.0...

Chemistry
Since there is 5H2O is about 36% of CUSO4 + 5H2O , would there be about 16 g of residue left over? Thanks

Chemistry
If 25 grams of copper(II) sulfate pentahydrate were heated until all water was removed, how much residue would remain?- Could someone help me understand this question? I don't understand it at all. Thanks

Chemistry
Dr.Bob, do you think there is a formula for animals fats? I can only find the different formula for different lipids. Thanks

Chemistry
Is there a chemical formula for animal fats? - Would the lipids chemical formula be the same as animal fats? Thanks

Chemistry
DrBob, let say the mass of H2O is 18 g. Would 1 gram of water be about 0.05 mole of H2O? Thanks

Chemistry
I did a lab that involve cooking meat and finding the mass of lipids, meat tissue and water. For a chicken sample the original mass was 20 gram. After cooking there was 15.5g of meat, and 1.5 g of oil, and 1 g of water. I am missing 2 g of the original mass. Anyone have any id...

Chemistry
Thank you so much for that explanation!

Chemistry
The problem ask what is the mass of iron(iii) chloride contains 2.35 x 10^23 chloride ions. I understand the molar mass is 162.20 g/mol. - 2.35 x 10^23 chloride ions would be around 0.39 moles. - The work that my teacher gave me is 0.39 moles * (1 mol FeCl3 / 3 mol chloride io...

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