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# Cambridge Chemistry Challenge watch

1. Just finished.
Thanks again for the help on silver.
It was by far the most frustrating
2. HELP ON SILVER PLEASE! I got 1949 ish for my answer, is this anywhere near correct? Pleas help, I've been on this question for soooo long. Thanks in advance.
Never mind. I was so close. It turned out keep all your answers precise.
3. (Original post by Worldcitizen)
Still can't figure out the answer to this.

Could you give me a few tips please?
4. I've been stucked in Gold for hours. Can someone check what I'm doing?

Volume of the statue*Density of NaCl
g of NaCl*Molar mass
moles of NaCl=moles of H20
moles of H20*Molar mass
g of H20/Density of H2O

I'm tired of getting the wrong answer
5. (Original post by Scattereddreams)
I've been stucked in Gold for hours. Can someone check what I'm doing?

Volume of the statue*Density of NaCl
g of NaCl*Molar mass
moles of NaCl=moles of H20
moles of H20*Molar mass
g of H20/Density of H2O

I'm tired of getting the wrong answer
I believe that you need to look for the solubility of NaCl in water at 100ºC
6. I have been stuck on gold for a day now!!! i keep getting answers around 70 0000 ml. what am doing wrong? am i anywhere close to the answer?
7. (Original post by ChemistryQuiz)
I have been stuck on gold for a day now!!! i keep getting answers around 70 0000 ml. what am doing wrong? am i anywhere close to the answer?
The salt used was halite, not nacl.
Work out the mass the mass of the statue, and follow some instructions on how to calculate solubility
8. (Original post by ltigers)
The salt used was halite, not nacl.
Work out the mass the mass of the statue, and follow some instructions on how to calculate solubility
is the mass 325000 grams?
sorry, i mean 3255 grams?
9. (Original post by ChemistryQuiz)
is the mass 325000 grams?
sorry, i mean 3255 grams?
Yes, your answe should be in the hundreds of thousands
10. (Original post by ltigers)
Yes, your answe should be in the hundreds of thousands
Sorry for the late reply but thanks a lot for all your help!! Did it!!
11. (Original post by ltigers)
The salt used was halite, not nacl.
Work out the mass the mass of the statue, and follow some instructions on how to calculate solubility
NaCl is halite
12. I'm in Rg since yesterday. I have problems in working out the final solution in SMILE. Can somebody help me?
13. (Original post by Scattereddreams)
I'm in Rg since yesterday. I have problems in working out the final solution in SMILE. Can somebody help me?
Have you worked out the equation?
With regards to the products, I got the message saying to balance the equation.
Remember that if the two products SMILE formulae are A and B, the answer is A.B
That is how you balance it.
I hope it helps
14. (Original post by Scattereddreams)
I'm in Rg since yesterday. I have problems in working out the final solution in SMILE. Can somebody help me?
If you don't know how to convert the products into their SMILE formulae type it in on Google.
I found the SMILE formula for one of the products on ChemSpider
15. (Original post by Gotzz)
Thanks anyways.

I have got it now.
16. (Original post by Worldcitizen)
Thanks anyways.

I have got it now.
can anyone help me with copper? Be, F, ?
17. (Original post by ChemistryQuiz)
I know what is given for copper but how is it in order? Can anyone please help me out!!!

Got it!!
what did you get?
this is hideously confusing
18. (Original post by DavidH20)
well done
how did you do copper? even if you give me a vague hint besides atomic mass i'll be incredibly grateful
19. (Original post by ramkanwar55)
well done
how did you do copper? even if you give me a vague hint besides atomic mass i'll be incredibly grateful
I got the answer with a bit of lucky googling...the 1st and 2nd concerns a property shared by beryllium and fluorine related to the calculation of atomic mass.

That's the best I can give without just giving the answer...
20. (Original post by DavidH20)
I got the answer with a bit of lucky googling...the 1st and 2nd concerns a property shared by beryllium and fluorine related to the calculation of atomic mass.

That's the best I can give without just giving the answer...
got it, i dont get why i didnt see that haha

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