A genetic experiment with peas resulted in one sample of offspring that consisted of 424 green peas and 163 yellow peas.

a. Construct a 95​% confidence interval to estimate of the percentage of yellow peas.

b. It was expected that​ 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not​ 25%, do the results contradict​ expectations?

23 mg of nitrogen gas, assumed to behave ideally, at a pressure of 88 torr and at 22^oC undergoes an adiabatic free expansion into a vacuum (Joule experiment) to a final pressure of 34 torr.

a) Is the process reversible? Why or why not?
b) What is the final temperature of the system? Why? [ answer should be 22^oC]
c) What is ∆S for the system?

A genetic experiment with peas resulted in one sample of offspring that consisted of

423

green peas and

166

yellow peas.

a. Construct a

95​%

confidence interval to estimate of the percentage of yellow peas.

b. It was expected that​ 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not​ 25%, do the results contradict​ expectations?

Consider an HPLC analysis. Which term in the van Deemter equation plays a minimal role in
determining the theoretical plate height (H)? Justify your answer.

Consider a capillary column GC experiment. Which term in the van Deemter equation is most
strongly affected by increasing the inner diameter of the column? Justify your answer.

Part A

In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 ∘C. If 4.00 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CaCl2 is −82.8 kJ/mol.

Express your answer with the appropriate units.

Hints

The following question refers to the enzyme chymotrypsin.

For an experiment, you are asked to modify the sequence of chymotrypsin so that, it instead of cleaving C-terminal to a Phe/Tyr residue, it cleaves after Lys. Please describe the strategy you would take in your design, considering what you have learned. Please explain with clarity and detail.

A genetic experiment with peas resulted in one sample of offspring that consisted of

440

green peas and

163

yellow peas.

a. Construct a

95​%

confidence interval to estimate of the percentage of yellow peas.

b. It was expected that​ 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not​ 25%, do the results contradict​ expectations?

(3) You have a 5 M sucrose stock solution and need 90 mL of the three following solutions for your experiment: 0.5 M, 0.05 M, and 0.005 M sucrose, respectively. How will you prepare the 3 sucrose solutions you need? You can use a diagram to explain your answer.

Information on a packet of seeds claims that 93% of them will germinate. Of the 220 seeds that I planted, only 187 germinated.

Compute a 95% two-sided Agresti-Coull CI on the proportion of seeds that germinate. Use as a point estimator p^ the proportion of seeds that germinated during the experiment.
Round your answers to two decimal places