5. Show your calculations from Experiment 1: Ideal Gas Law - Finding Percent H2O2 with Yeast for determining the theoretical number of moles of O2 if the hydrogen peroxide were a 100% solution. Table 1: Temperature, Pressure, and Volume Data

Temperature of Distilled H20

Room Pressure

Initial Volume of Air (mL)

Final Volume of Air (mL)

Volume of O2 collected (Final Volume-Initial Volume)

22 C

1 atm

10 mL

70 mL

60 mL

Table 2: Reaction Time Data

Time Reaction Started

Time Reaction Ended

Reaction Time (Seconds)

11:10

11:13

180 seconds

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

Geothermal energy for industrial use is available almost anywhere. a.true b.false

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium