8 -1 Wonderland presently emit to the atmosphere 8.26 x 10 moles day of 8 2 NOx and 1.87 x 10° moles day of SO2. We assume that all of the emitted NOX and SO2 are precipitated back over the Wonderland as HNO3 and H2 SO4, respectively. The area of Wonderland is 780580 km and the mean precipitation rate 700 mm/year. Assuming that HNO3 and H2SO4 are the only impurities in the rain, Show that the resulting mean pH of precipitation over the Wonderland is 3.09.

Ksp = 6.7 x 10-³1 for Cr(OH)3 at 25 °C, what is the molar concentration of Cr³+ at 25 °C? M (example: type in 3.4E-5 for 3.4x10-5). Please pay attention to the number of sig. figs. in your answer. The molar concentration of OH is

Group I Cations of 6 M HCI; centrifuge for ~1 minute. Decant the solution and add an additional one or two drops of 6 M HCI; if no additional precipitate forms, the precipitation is complete. If it was incomplete, centrifuge to obtain the additional solid; then decant the liquid, add 1 or 2 drops of 6 M HCI, and repeat the procedure until no precipitate forms. Discard the supernatant into the appropriate waste container or keep for later experiments if your instructor so indicates. Add 1.5 mL of cold deionized or distilled water to the precipitate to wash; agitate, centrifuge, and discard the water to the appropriate waste container. Repeat the wash procedure. The solid contains Pb2*, Ag*, and/or Hg22*. Step 2. Separation of Pb2*. Add 1 mL of boiling water to the solid from step 1. Agitate, centrifuge, and decant the liquid. Repeat the extraction, combining the supernatant. The liquid should contain Pb?* if any is present. Step 3. Testing for Pb2*. Add 2 or 3 drops of 0.2 M K2CRO4…

Describe how to calculate the ocean concentration of CO32- using the data collected from 2015. You do not need to calculate it (only mention what data, constants and equations are needed).​​​​​​​