Prove that 1 ppm = 10-5 M for a formula weight of 100.
Solution Prep (a) The weight of MgCl2 required to create 1 kg of 1000 ppm Mg ion; (b)The weight of the 1000 ppm stock solution required to create a 15.0000 g of a 100 ppm sub-stock solution. (c) The weight of the 100 ppm solution required to create 15 g of each of the following: 1 ppm, 5 ppm, 10 ppm, 20 ppm, 30 ppm and 40 ppm Mg ion
4) Chemical Formula: CH100 IR: strong broad peak at 3300cm- 244)+2 = 10 PPM 5) Chemical Formula: C8H11N IR: Two weak peaks at 3350cm! Doublet, IH Triplet, IH Triplet, 1H Doublet, IH PPM
What is the structure of this compound? 1. Molecular Formula: CHCI 'H NMR 6 3.42 ppm, 1H, pentet 61.80 ppm, 2H, quartet 6 1.73 ppm, 2H, doublet 6 1.56 ppm, 2H, triplet 6 1.53 ppm, 2H, pentet 60.99 ppm, 6H, singlet PC NMR 8 57.2 ppm, 10 6 49.3 ppm, 1C 6 38.4 ppm, 1C 6 37.7 ppm, 1C 6 33.3 ppm, 10 6 30.9 ppm, 2C 8 22.4 ppm, 1C 60 50 40 10 IR: 2964 cm(s) 713 cm...
CCHIOH 25 418 so- o ppm 88 (M+) missing 100 ml Combined IR Spectroscopy and Mass Spectrometry Problems Determine the molecular formula and possible structures for each unknown based on the given spectra. Use the IR Correlation Table. Note: DOU = #Cs+1-0.5(#Hs-#Ns+#halogens). SHOW YOUR WORK! С и он or SO 0 ppm 88 (M) missing 100
Question 02 Show briefly how 1 ppm (by weight) is related to 1 mg/L (or 1 g/m) in dilute solutions (concentrations of pollutants are very small).
Question 1 2(a) Let m>1 be an odd natural number. Prove that 13-5.-(m-2) (- 2-4-6. (-1) (mod m) (m-1) (mod m [Hint : 1 i-(m-1 ) (mod m), 3 Ξ-(m-3) (mod ") , . .. , m-2 1-2 (mod m)] 14 (b) If p is an odd prime, prove that Hint: Use Part (a), and rearrange the Wilson's Theorem formula in two different ways
Determine the structural formula for each 8 PPM c. CSH10O2 =0 3H 3H 2H 2H 5 PPM CSH1002 d. 3H 3H 3H 1H PPM 45)
Check 200 180 160 120 80 60 40 20 0 140 a 100 ppm s, 3H t, 3 H d. 2 a. 2 H d. 2H s, 1 H 1 10 9 8 7 6 4 3 2 1 5 ppm 1) Which compound gives the following spectra? For the 'H-NMR assign all signals. Interpret mol peak and base peak in the mass spectrum if a mole peak exists. Assign at least two 13C signals, How does the IR spectrum...
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 148, an IR peak at 1680 cm'and gives the following H and 13C NMR spectra 3H зн 2H 2H 2H 3 5 2 7 6 4 PPM 160 140 180 60 220 200 20 0 120 100 80 40 PPM -
4. Formula-CsH40 48- 3sa 3000 2000 1000 3H 3H 3H 2H 2H 1H Г 1.4 PPM qamrymn 5.4 5.2 5.b 4.8 4.6 4.4 4.2 PPM 1.b 2.2 2.0 1.B 2.4 2Csa 6L'0141 08'e082 98162 e962 4. Formula-CsH40 48- 3sa 3000 2000 1000 3H 3H 3H 2H 2H 1H Г 1.4 PPM qamrymn 5.4 5.2 5.b 4.8 4.6 4.4 4.2 PPM 1.b 2.2 2.0 1.B 2.4 2Csa 6L'0141 08'e082 98162 e962