1. A machine is programmed to produce tennis balls so that the mean bounce is 36cm when the ball is dropped from a platform. An experiment is conducted using 35 tennis balls. The 5% level of significance is to be used to test the hypothesis. The sample mean was computed to be 35.5 cm and the standard deviation of the sample is 0.9 cm. Is there evidence that the sample mean is less than 36 cm?

You have purified genomic RNA from the following viruses: Zika, and murine leukemia viruses. You performed an experiment where susceptible, permissive cells were separately transfected with one pure molecule of viral RNA. Which RNA will lead to a productive viral infection? Discuss the reasons why one RNA succeeds and the other fails. Be clear and convincing

In ¹⁹F NMR spectroscopy, the F nuclei behave just like protons in ¹H NMR spectroscopy in that they have a nuclear spin quantum number of 1/2. How many ¹⁹F NMR resonances do you expect for PF₅? (Assume a static structure. In other words, the axial and equatorial do NOT rapidly scramble and change positions on the timescale of the NMR experiment.)

Lysine is an amino acid which has the following elemental composition: C, H, O, N. In one experiment, 3.263 g of lysine was combusted to produce 5.910 g of CO2 and 2.835 g of H2O. Separate analysis determined that lysine is 19.17% N. The molar mass of lysine is 150 g/mol. Determine the empirical and molecular formulas of lysine.

Chapter 6 begins with some alternative explanations for recent changes in the homicide rate. Which of the explanations make the most sense to you? Why? How could you learn more about the effect on crime of one of the "causes" you have identified in a laboratory experiment? What type of study could you conduct in the community to assess its causal impact?

Hypothesis testing is based on the idea that if there is enough of a difference between your experimental sample and the comparison distribution, you can see the research supports your hypothesis.

Describe an experiment in which you would expect there to be a very small difference between the experimental sample and the comparison distribution. How small of a difference could there be for you to still be okay with rejecting the null hypothesis?

Organic II lab: Fischer Esterification: Preparation of Benzocaine

The protocol for this week’s experiment calls for the adjustment of the pH with sodium carbonate prior extracting the aqueous mixture with diethyl ether.

(a) Why is it necessary to adjust the pH to 8?

(b) Why would it be unwise to use strong bases such as NaOH or KOH in the pH adjustment? Illustrate your thoughts by a chemical reaction

A 5.193 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 9.255 grams of CO₂ and 3.790grams of H₂O are produced.

In a separate experiment, the molar mass is found to be 74.08 g/mol. Determine the empirical formula and the molecular formula of the organic compound.

Enter the elements in the order C, H, O

Trypsin is an enzyme that can digest the hydrophilic portions of membrane proteins, but it is unable to penetrate the lipid bilayer and enter a cell. Due to these properties, trypsin has been used in conjunction with SDS-PAGE to determine what proteins have an extracellular domain. Describe an experiment using trypsin to determine the sidedness of proteins of the erythrocyte membrane. BE SURE TO INCLUDE ANY RELEVANT CONTROLS