Which of the following molecules may show a pure rotational microwave absorption spectrum: (i) \(\mathrm{H}_{2}\), (ii) HCl, (iii) \(\mathrm{CH}_{4}\), (iv) \(\mathrm{CH}_{3} \mathrm{Cl} \text {, }\) (v) \(\mathrm{CH}_{2} \mathrm{Cl}_{2}\)?
Text Transcription:
H_2
CH_4
CH_3CI
CH_2CI_2
1 -18 Lecture 3 -25 Calorimetry . @ constant =P pressure 0Hr×n= -qso ,n= -(MCPOT ) rxn -9 obj ' use Cpso. obj ,ob#ect j UseCpobj And C , Pobjz e . to 99.8°C in CC 23.5°C Final 25 "C SH = 0.444 . g . nickel heated . Placed w/ 150g Hzo @ . temp Ni = . Cn ; J/ C 4.1851 C SH Cnzj Calculate mass of Ni originally heated . into moot = mcot (150×4.18=65-23.5)=420 = mn ; Mccfft = 30g 0.44 4) (25-99.8) Ni ( ] ' bomb ' calorimeter 1-7 Calorimetry @ constant V = mcrot % e. . + HZO g Hzy , £02 (g) → (g) ; 0.5g Hz Calculate energy released per gram of Hz (g)
