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.

1.      Define anisotropy and list the equation that describes fluorescence anisotropy.

2.      How do you think increasing temperature will affect the measured fluorescence anisotropy in this experiment (i.e. will it increase or decrease)? Why?

Describe some hypothesis regarding brain function you can test with fMRI. How would you set up an experiment to test this hypothesis. What would the subject do in the MRI machine?

An overzealous student decided to conduct an extraction and recrystallisation experiment by removing all the dichloromethane at the very beginning and then separating the solid residue of benzoic acid and acetanilide by recrystallisation. Explain why this procedure would be ineffective.

Organic II lab: Relative Rates of Electrophilic Aromatic Substitution

In this experiment, acetic acid is used as a catalyst for the electrophilic substitution on aromatic rings. Would this catalyst work with nitrobenzene? Explain your answer. _______________________________________________