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Cambridge Chemistry Challenge

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Reply 1480

mu142857

Just finished.
Thanks again for the help on silver.
It was by far the most frustrating

Reply 1481

Northdene

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.
Hint 1800<answer<1900

(edited 11 years ago)

Reply 1482

Gotzz

Original post by Worldcitizen

Still can't figure out the answer to this.

Could you give me a few tips please?

Sorry for late reply, but I haven't got the answer yet.

Reply 1483

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

Reply 1484

mu142857

Original post by Scattereddreams

I believe that you need to look for the solubility of NaCl in water at 100ºC

Reply 1485

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?

Reply 1486

ltigers

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

Reply 1487

ChemistryQuiz

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?

(edited 11 years ago)

Reply 1488

ltigers

Original post by ChemistryQuiz

is the mass 325000 grams?
sorry, i mean 3255 grams?

Yes, your answe should be in the hundreds of thousands

Reply 1489

ChemistryQuiz

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!! :smile:

Reply 1490

Acruzen

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

Reply 1491

Scattereddreams

I'm in Rg since yesterday. I have problems in working out the final solution in SMILE. Can somebody help me?

Reply 1492

mu142857

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

Reply 1493

mu142857

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

Reply 1494

Worldcitizen

Original post by Gotzz

Sorry for late reply, but I haven't got the answer yet.

Thanks anyways.

I have got it now.

Reply 1495

ramkanwar55

Original post by Worldcitizen

Thanks anyways.

I have got it now.

can anyone help me with copper? Be, F, ?

Reply 1496

ramkanwar55

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

Reply 1497

ramkanwar55

Original post by DavidH20

Made world top 10! :biggrin:

well done

how did you do copper? even if you give me a vague hint besides atomic mass i'll be incredibly grateful :smile:

Reply 1498

User944645

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 :smile:

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...