outline a lab experiment which could be done in order to determine delta H, delta G and dellta S of dissolution of Urea

After conducting an experiment, you report a p-value of less than .05 and an effect size of .82. Explain what this means.

In a double-slit interference experiment you are asked to use laser light of different wavelengths and determine the separation between adjacent maxima. You observe that this separation is greatest when you illuminate the double slit with In a double-slit interference experiment you are asked to use laser light of different wavelengths and determine the separation between adjacent maxima. You observe that this separation is greatest when you illuminate the double slit with:

1. yellow light.

2. red light.

3. blue light.

4. green light.

5. The separation is the same for all wavelengths.

a)Gilbert is doing a SDS-PAGE experiment and he cannot find sodium dodecyl sulfate (SDS) for the experiment. He wants to use the household detergent to replace SDS and he said that the cancer cells are easily being lysed even by household detergent. Will he have a successful SDSPAGE result? Discuss how SDS works.

b)Experiments have shown that a defective gene gives a defective enzyme. Hence there is argument of that one gene is responsible for making one enzyme. Discuss whether this statement is correct or not. Give ONE example to support.

After taking Biology 101 you decide continue in science and are hired as medical researcher at UH-Manoa.

Doctors have reported to you that they have observed that individuals taking a new headache medication called PAINFREE also have low blood pressure.

A. Design a simple experiment based on this observation. Include a hypothesis statement and your proposed experiment for the study.

B. Comment on if your study will be enough to make a conclusive statement about the drug PAINFREE. Explain why or why not

C. Discuss if their any ethical or societal implications of your proposed research.

One concern about the depletion of the ozone layer is that the increase in UV light will decrease crop yields. An experiment was conducted in a green house where soybean plants were exposed to varying levels of UV levels - measured in Dobson units. At the end of the experiment the yield (kg) was measured. A regression analysis was performed with the following results:

Term____|_Estimate__|_Std Error_|_t ratio_|_Prob>ltl_|_Lower 95%_|_Upper 95%

Intercept__3.9800118__0.053774__74.01___<.0001___3.8638398___4.0961838

uv_______-0.046285___0.010741__*hidden__0.0008_______****hidden****

A 95% confidence interval for the mean yield when the UV reading is 20 Dobson units is:

1.The equilibrium constant, Kc, for the reaction A(g) + B(g)  AB(g) is 115 at 25 oC. If 1.580 x 10‐1 mol of A and 4.721 x 10‐5 mol of B are introduced into a 1.00 liter vessel at 25 oC, calculate the equilibrium concentration of all species. Show your work using an ICE table.

2. (a) This experiment is separated into parts I and II. What are the [Fe3+] and [SCN‐] before mixing in each part?

(b) Briefly, explain why the concentrations of the Fe3+ and SCN‐ are different in the two parts of the experiment.

Suppose that you carried out a Bacterial transformation of E. coli HA101 with pGLO plasmid experiment in the lab. During the experiment, plates with bacteria were inoculated from +GLO and -GLO microfuge tubes (LB (-) plate, LB/amp (-) plate, LB/amp (+) plate, and LB/amp/ara (+) plate).

            5) What does LB (-) plate contain?

6) What does LB/ amp (-) plate contain?

7) What does LB/amp (+) plate contain?

8) What does LB/amp/ara (+) plate contain?

A student performs this experiment but does not have the flask boiling when dissolving the original sample. All other steps are performed correctly (using the minimum amount of solvent to dissolve as much of the sample as possible, etc.). What will be the effect on this student’s eventual percent recovery after recrystallization as a result of this mistake? Explain in one sentence.

A student performs this experiment but forgets to rinse the product after vacuum filtration. Which type(s) of impurity would likely be present the following week? Choose among: “soluble”, “insoluble”, “both”, or “neither”, and explain in one sentence.

1)When 5.352 grams of a hydrocarbon, C_xH_y, were burned in a combustion analysis apparatus, 18.38 grams of CO₂ and 3.010grams of H₂O were produced.
In a separate experiment, the molar mass of the compound was found to be 128.2 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon.

2)When 4.948 grams of a hydrocarbon, C_xH_y, were burned in a combustion analysis apparatus, 16.72 grams of CO₂ and 3.424grams of H₂O were produced.
In a separate experiment, the molar mass of the compound was found to be 26.04 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon.