Alex built a model to show how light bends when placed into water. To do this, Alex filled a fish tank up with water, and shined a green laser through the water. The angle he shined the laser into the fish tank is the line above the water, and the angle that the light bent is seen below the water. What is a limitation of this model? The model cannot show how light bends. The model is unable to use different colors of light The model cannot calculate the speed of light The model is not 3 dimensional

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?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction