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- In a neutral solution, the [H*] is : * 1.0x10-14M zero 1.0×107M O 1.0x10-7MNathan wants to take 50mg of Phenergan for his nausea. Phenergan comes packaged as 12.5mg per 2tsp. How many tsp of Phenergan should Nathan take?An adult takes about 12 breaths per minute, inhaling roughly 500 mL of air with each breath. The molar compositions of the inspired and expired gases are as follows: Species Inspired Gas (%) Expired Gas (%)O2 20.6 15.1CO2 0.0 3.7N2 77.4 75.0H2O 2.0 6.2The inspired gas is at 24°C and 1 atm, and the expired gas is at body temperature and pressure (37°C and 1 atm). Nitrogen is not transported into or out of the blood in the lungs. All nitrogen inhaled is exhaled. 1. Calculate the masses of O2, CO2, and H2O transferred from the pulmonary gases to the blood or vice versa (specify which) per minute. 2. Calculate the volume of air exhaled per milliliter inhaled. 3. At what rate (g/min) is this individual losing weight by merely breathing?
- Heliox is a helium‑oxygen mixture that may be used in scuba tanks for divers working at great depths. It is also used medically as a breathing treatment. A 5.25 L tank holds helium gas at a pressure of 1734 psi. A second 5.25 L tank holds oxygen at a pressure of 461.0 psi. The two gases are mixed in a 5.25 L tank. If the temperature remains the same throughout the process, what is the pressure of the gas mixture in the tank? Assume ideal gas behavior.5PROBLEM 12.27 (a) Use Table 12.5 to calculate the osmotic pressure of the hemodi- alysis solution at 25 °C. (b) If the osmotic pressure of blood at 25 °C is 7.70 atm, what is the direction of solvent movement across the semipermeable mem brane in dialysis? (Blood to dialysis solution or dialysis solution to blood)
- A doctor wants to prescribe a 70 kg patient a drug to be taken PO. In order to achieve an average steady-state plasma concentration (Css) of this drug in its therapeutic range, the patient needs to have a of Css of 597 μg/L. The VD of this drug is 2.3 L/kg, the F of this drug is 0.70, and the half-life of this drug is 12.9 hours. What is the necessary dosing regimen needed to achieve the desired Css? (units: mg/day, i.e., mg/24 h))1а. 2а. 2b. 2с. 62 3. 4. I.draw the alkane strucutre based off the IR spectrum, 1H NMR spectrum, and 13C NMR spectrum for this compound.
- Twenty observations on etch uniformity on silicon wafers are taken during a qualification experiment for a plasma etcher. The data are as follows: Etch Uniformity 5.34 6.65 4.76 5.98 7.25 6.00 7.55 5.54 5.62 6.21 5.97 7.35 5.44 4.39 4.98 5.25 6.35 4.61 6.00 5.32 (a) Discuss the normality assumption and its role in this problem. (b) Check normality by constructing a normal probability plot. What are your conclusions?What is the pH of a cleaning solution with a [H3O*] = 7.4 x 10-10 м НзО"? А. 7.4 В. 7.13 C. 8.13 D. 9.00 E. 9.13The vapor pressure of component C is 272 torr, and that of component E is 176 torr at 35°C. The C-E solution at 35C with x=0.200 has a vapor pressure of 904.2 torr and vapor composition of x=0.272. 1. Calculate y, for C 2.15 and for E 4.99 : in this solution. 2. Calculate a, for C 2.42 and for E 2.678 in this solution. 3. Calculate p,-p, for component C 2264.38 : (J/mol) and E 857.32 : (J/mol). 4. Calculate AmyG= -1092.22 : (J) for the corresponding ideal solution.
