What can you conclude about the effect of dilution on the pH of a buffer solution such as buffer A (10 mL of sodium bicarbonate + 10 mL of sodium carbonate) in your experiment? Explain your answers.

During this distillation experiment, a student collects a 10.00 mL fraction consisting of 70% ethyl acetate and 30% n-butyl acetate (by volume). What is the mole fraction of n-butyl acetate in this sample?

Search for the thought experiment called “Maxwell’s demon” and summarize its importance regarding the second law of thermodynamics in your own words in a half a page long essay. Add the references at the end of the essay.

In Young's double-slit experiment, what happens to the spacing between the fringes if

(a) the slit separation is increased?

(b) the wavelength of the incident light is decreased?

(c) if the distance between the slits and the viewing screen is increased?

In the laboratory, a general chemistry student measured the pH of a 0.532 M aqueous solution of acetylsalicylic acid (aspirin), HC9H7O4 to be 1.885. Use the information she obtained to determine the Ka for this acid.

Ka(experiment) =

Design an experiment for the wound/healing assay, describe how you would manipulate the following parameters that specifically relate to this assay:

- Independent variables, describe two

- Dependent variables, describe two

- Constants

In an experiment involving the oxidation of Borneol to camphor, the camphor produced began melting at 146C but was fully melted at 176C. Does this indicate impurities and which of these do I use as my experimental melting point?

In one of your experiments, you give that preparation a drug that blocks voltage-gated Ca++ channels: in another , you give tetanus toxin to the preparation. How will synaptic transmission be affected in each experiment?

Songbirds living in cities experience lower fitness than songbirds living in rural areas.

1. Create a hypothesis to explain the observation.
2. Design an experiment to test this hypothesis.
3. Make a prediction about your result.