Across Down 2. Stored energy through electrochemical reaction 4. Organic matter from plants, animals, and microorganisms 7. Clean energy: sources are constantly replenished 1. Most common greenhouse gas emitted by burning of fossil fuels; a major contributor to the worsening effects of global warming 3. Energy comes from active volcanic sites 9. Sources that will run out and cannot be replenished for thousands or even millions of years 10. Comes from the energy of moving water and/or turbines 5. Energy comes from carbon deposits 6. Sun is the primary energy source 8. Uses the breeze to move turbines

bë 4 Absorbance of a solution increases with increasing Wavelength Temperature Concentration Frequency

Given a Ka value of 1.3 X 10-10 for phenol (a benzene with an alcohol group on it-aromatic alcohols are acidic-who knew?), what is its pKa? 7.20    8.75    6.80    9.89

What absorbance corresponds to 1% transmittance? To 50% transmittance?

LOD TRANSMITTANCE1% D 4000 O ketone Oester 3000 2000 O carboxylic acid O aldehyde O alcohol O nitrile (i.e., RCN) O None of these other choices is correct. HAVENUMBERI-I 1500 1000 500

What happens to the electronically excited molecule specifically throughphotophysical and photochemical processes?

Indicate the functional groups present in the IR spectra shown below (you may choose more than one answer): choices: N-H group C≡N group Alkene (C=C) group C=O group Aromatic ring group O-H group Alkyne (C≡C) group

U stane Part A [H3O+] = 1.8 × 10–8 M Express your answer using two decimal places. pH = Submit Part B VD| ΑΣΦ Request Answer pH = 2 [H₂O¹] =2.5 x 10-² M Express your answer using two decimal places. Submit VE ΑΣΦ Request Answer À bp Ć ? 4

Given the Ka values, estimate the pKa value of each of the following acids without using a calculator (that is, is it between 3 and 4, between 9 and 10, and so on?):

Chemistry 1. Expected Signals ('H NMR and ¹3C NMR) TEUERSutet In the boxes provided, indicate the number of signals that would be expected in the 'H NMR and 13C NMR 13C NMR ¹H NMR 13C NMR ¹H NMR 13C NMR ¹H NMR HOT H-N 13C NMR 1H NMR 13C NMR ¹H NMR 13C NMR ¹H NMR