Thank you for using the Jiskha Homework Help Forum. Here is what I found on testing:
3. (slide down to field tests): http://www.odvinc.com/newsletters/sp97-2.html
In the cocaine formula for every N (14 g/mole) atom here are 17 C (12g) atoms and 2 H (1g) atoms
Therefore thee ratios of masses of those three elements must be:
N -- 14
C --17*12 = 204
H --2*1 =2
Now how many moles of C in 150 g CO2?
(I am going to use grams instead of milligrams for everything because we are only interested in ratios in the end)
mole of CO2 = 12 +32 = 44 g/mole
so we have 150/44 = 3.41 moles CO2
and therefore 3.41 moles of C
which is 3.41 * 12 = 40.9 grams of C
Now how many moles of H in 46.05 g of H2O?
mole of H2O = 2+16 = 18 g/mole
so we have 46.05/8 = 2.56 moles H2O
and thus 2*2.56 = 5.12 moles of H
Now check ratios of either moles or grams
moles C/moles H = 3.41/5.12 = .666
but we know that we need 17 moles C to every 2 moles H if it is cocaine!
check my arithmetic and do more similar analysis for Nitrogen as well
46/18 not 46/8
The calculation is right above but I typed 8 instead of 18
It says 21 moles of Hydrogen , not 2 !
Answer this Question
Chemistry - A compound containing only carbon, hydrogen and oxygen is subjected ...
chemistry - last one, i PROMISE A compound containing only C, H, O and Cr was ...
Chemistry- DrBob222 - 0.2g of an organic sample W, analysed by combustion ...
Chem - 3.297 g of a substance (containing only C, H, and O) is burned in a ...
Chemistry - The reaction: H2C2O4 + CuO + Heat = ? This reaction was produced in ...
chemistry - Combustion analysis, Empirical and Molecular formulas, help!? When 2...
Chemistry - Combustion analysis of 0.284 g of a compound containing C, H, and O ...
chemistry - Combustion analysis of 0.213 g of a compound containing C, H, and O ...
Chemistry - Combustion analysis of 0.343 g of a compound containing C, H, and O ...
Chemistry - Combustion analysis of a 1.00g sample of ascorbic acid yields 1.500g...