A. A chemistry student comes home from school and finds a leaky battery lying on the new living room carpet, where it's left a dark stain. Having just learned about acids and bases in school, he dashes to the kitchen, grabs something from the cupboard, and uses it to treat the stain.
Should he have grabbed a bottle of vinegar (acetic acid) or a box of baking soda (which contains HCO3–) to treat the spill? Explain your reasoning. (2 points)

b. Some substances, such as HPO42–, can act as acids or as bases. (2 points)
i. When HPO42– acts as an acid, what is its conjugate base? When it acts as a base, what is its conjugate acid? (1 point)
ii. The reaction between HPO42– and its conjugate acid creates a very important buffer inside your cells. Explain what a buffer does. (1 point)

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.

For questions 1 and 2, consider the following experimental data.hydrogen emission lines were detected at the following wavelengths (in nm): 121.6102.697.395.093.8question 1use the electromagnetic radiation classifications below and figure 1-1 in the introductory information for this lab (in the lab manual) to determine the nf value for the experimental data provided? wavelength, ? (nm) 650 700 550 600 400 450 500 visible spectrum wavelength, ? (m) 11 10 3 10 10 10 8 10 5 10 10 -10 10 9 10 10 10 10 -12 10 microwave radio infrared x-ray ultraviolet gamma 1020 1019 1018 1 1016 015 1014 01 12 109108 frequency, v (hz)a.1b. 2c. 3d. 4e. 5question 2using the data for the emission line with the longest wavelength, the known value of nf (from question 1 in this prelab), and the value of ni (deduced from the ? and nf values) calculate the rydberg constant for hydrogen (rh) in units of m-1.a) 1.097 x 10-11 m-1b) 5.921 x 107 m-1c) 1.097 x 10-2 m-1d) 9.252 x 106 m-1e) 1.097 x 107 m-1