A patient is admitted to the ICU with severe necrotizing pancreatitis. A few hours after admission, he developed increasing oxygen requirements and was intubated for hypoxemic respiratory failure. Intially, his oxygen saturation improved to the mid-90% range on an FiO2 of 0.5, but in the past 2 hours, the nurse has had to increase the FiO2 back to 0.7 and his SaO2 is still in the lower 90% range. The patient remains on a PEEP of 5 cmH2O. The respiratory therapist drew an ABG which shows pH 7.35, PCO2 38, PO2 60, HCO3 - 22 on an FiO2 of 0.8. The patient's repeat chest x-ray is shown a "ground glass appearance". An echocardiogram performed earlier in the day revealed normal left ventricular function. How do you explain his worsening oxygenation status? What can you do to improve his oxygenation? What other changes should you consider making in the ventilator settings? If his oxygen saturation fails to improve despite being on high levels of support (i.e., FiO2 of 1.0 and 20 cmH2O of PEEP), what other options do you have for improving his oxygenation?

A student reacted 100.0 mL of 0.9800 M HCl with 100.0 mL of 0.9900 M NH3. The density of                          
the reaction mixture was 1.02 g/mL and the heat capacity was 4.016 J/g K.                          
Calculate the enthalpy of neutralization by plotting and using the data shown below.

Time(min) Temp(oC)
0.0 23.25
0.5 23.27
1.0 23.28
1.5 23.30
2.0 23.30
3.0 23.35
4.0 23.44
4.5 23.47
mix ---------
5.5 28.75
6.0 28.50
7.0 28.55
8.0 28.48
9.0 28.32
10.0 28.25
11.0 28.20
12.0 28.05
13.0 27.96
14.0 27.80
15.0 27.75

Using the data provided in the excel file, show all of your work for the following calculations:

a.) mean temperature of unmixed reagents (oC)

b.) δελταT from graph (oC)

c.) q absorbed by reaction mixture (J)

d.) q absorbed by calorimeter, stirrer, and thermometer (J)

e.) q total absorbed (J)

f.) q total released (J)

g.) calculation to show limiting reagent

h.) deltaH neutralization for the reaction (kJ/mole of acid)

1). Nitromethane (CH3NO2) burns in air to produce significant amounts of heat. 2CH3NO2(l)+3/2O2(g)→2CO2(g)+3H2O(g)+N2(g) ΔH∘rxn=−1418kJ How much heat is produced by the complete reaction of 6.91 kg of nitromethane?

2). The air within a cylinder equipped with a piston absorbs 529 J of heat and expands from an initial volume of 0.10 L to a final volume of 0.87 Against an external pressure of 1.0 atm. What is the change in internal energy of the air within the cylinder?

3). The propane fuel (C3H8) used in gas barbeques burns according to this thermochemical equation. C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)ΔH∘rxn=−2044kJ​ If a pork roast must absorb 1.7×103 kJ to fully cook, and if only 13 % of the heat produced by the barbeque is actually absorbed by the roast, what mass of CO2 is emitted into the atmosphere during the grilling of the pork roast?

4). How much heat is required to warm 1.40 L of water from 20.0 ∘C to 100.0∘C? (Assume a density of 1.0g/mL for the water.)

The following table summarizes current prices of various default-free bonds with different maturities. Interest is paid semi-annually.

3.1 Compute the yield to maturity (YTM) and the theoretical spot rate for each of the four bonds. (14%)

3.2 Based on your answer in 3.1, compute, under the pure expectations theory, the forward rate on the six-month default-free bond six months from now. (4%)

3.3 Suppose you wanted to lock in an interest rate for an investment that beginsin one year and matures in one year. Under the pure expectations theory, what rate would you obtain if there are no arbitrage opportunities? Show your calculations. (3%)

3.4 Explain each of the following theories for the term structure of interest rates and discuss how each of them could explain an upward slope of the yield curve. (1) Pure expectations (unbiased) (2) Liquidity preference (term premium) (3) Market segmentation （12.3%）

The table below lists measured amounts (mg) of tar, carbon monoxide (CO), and nicotine in king size cigarettes of different brands. Tar 25 27 20 24 20 20 21 24 CO 18 16 16 16 16 16 14 17 Nicotine 1.5 1.7 1.1 1.6 1.1 1.0 1.2 1.4 Use the amounts of nicotine and carbon monoxide (CO).

1.Find the value of the linear correlation coefficient between amounts of nicotine and carbon monoxide.

2.Use the data and determine whether there is sufficient evidence to support a claim of a linear correlation between amounts of nicotine and carbon monoxide. Find the P-value.

3.Based on the P-value, is there a linear correlation between the amounts of nicotine and carbon monoxide?

4.Using the data, and letting y represent the amount of carbon monoxide and letting x represent the amount of nicotine, find the regression equation.

5.Referring to the data in Question 16, The Raleigh brand king size cigarette is not included in the table, and it has 1.3 mg of nicotine. What is the best predicted amount of carbon monoxide?

Goal #2: Determine the aqueous concentration of IO3- in each sample by titration.

Fill the buret with the thiosulfate titrant. Drain some titrant out until the level is a milliliter or so below 0.0 mL. Make sure you don't have a bubble at the bottom stem of the buret (below the stopcock).

Carefully pipet 10.00 mL of your solution “A1” into a clean 250 mL Erlenmeyer flask.

Add 10 - 20 mL of deionized water.

Add 1/4 teaspoon (1 scoop using the white spoon provided in kit) of solid KI.

Add 3 ml of 1 M HCL. Swirl to mix. The solution should be a dark yellow-brown color.

QUESTION : Describe how you would make the three calcium solutions (solutions A, B, and C). Include glassware.

The three people described in the following table are categorized as unemployed by the Bureau of Labor Statistics.

Identify each person in the table as structurally, frictionally, or cyclically unemployed.

The following table shows data on frictional, cyclical, structural, and total unemployment for an economy.

True or False: This economy is not currently at its natural rate of unemployment.

True

False

1. If a small amount of strong base were added to a buffer made of a weak acid HA and the lithium salt of its conjugate base, LiA, the pH does not change very much because....

a. No reaction occurs

b. The strong base reacts with A^- to give HA

c. Adding a strong base changes the pKa of the base

d. The strong base reacts with HA to give A^-

e. The strong base reacts with the Li⁺ to give LiOH

2) Which one of the following 0.10 M aqueous solutions has the highest pH?

a. Sodium perchlorate

b. Magnesium dichromate

c. Barium nitrate

d. Sodium sulfate

e. Iron (III) chloride

3) What is the equilibrium equation for the reaction 1.0 Molar solution of lithium dichromate with water?

a. Li₂Cr₂O₇(aq) + H2O(l) <-- --> 2 Li(aq)+ + C₂O₇^2- (aq)

b. Li(aq)⁺ + H₂O(aq) <-- --> LiH(aq) ⁺ + ^-OH(aq)

c. H₃O⁺ + ^-OH <-- --> 2 H₂O

d. Cr₂O₇^2-(aq)+ 2 H₂O(l) <-- --> H₂Cr₂O₇(aq) + 2 ^-OH(aq)

e. Cr₂O₇^2- (aq) + H₂O(l) <-- -->HCr₂O₇^- (aq) + ^-OH(aq)

Consider the chemical reaction: C(s)+H2O(g)→CO(g)+H2(g)

How many liters of hydrogen gas are formed from the complete reaction of 1.16 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and temperature of 319 K. ( ANSWER SHOULD BE IN LITERS )

Express your answer using two significant figures.

CH3OH can be synthesized by the reaction:
CO(g)+2H2(g)→CH3OH(g)

How many liters of H2 gas, measured at 741 mmHg and 88 ∘C, are required to synthesize 0.68 mol of CH3OH?

Express your answer using two significant figures.

How many liters of CO gas, measured under the same conditions, are required?

The Tsetsekos Company was planning to finance an expansion. The principal executives of the company all agreed that an industrial company such as theirs should finance growth by means of common stock rather than by debt. However, they felt that the current $49 per share price of the company's common stock did not reflect its true worth, so they decided to sell a convertible security. They considered a convertible debenture but feared the burden of fixed interest charges if the common stock did not rise enough in price to make conversion attractive. They decided on an issue of convertible preferred stock, which would pay a dividend of $2.10 per share.

a. The conversion ratio will be 1.0; that is, each share of convertible preferred can be converted into a single share of common. Therefore, the convertible's par value (and also the issue price) will be equal to the conversion price, which in turn will be determined as a premium (i.e., the percentage by which the conversion price exceeds the stock price) over the current market price of the common stock. What will the conversion price be if it is set at a 14% premium? Round your answer to the nearest cent.

At a 20% premium? Round your answer to the nearest cent.