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- Give typed full explanation not a single word hand written otherwise leave it High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa ) to about 60,000 kPa (60,000,000 Pa ). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 3.17×108 Pa , what is its running pressure in torr? Express the pressure numerically in torr.Which sample has the greatest volume at 25C and 1atm? A) 5.00g O2, B) 5.00g He C) all have same D) 5.00g Ne Thanksa liquid compund was vaporized at 100 degrees C and 755 mmHg to give 185 mL of vapor. Th vapor weighed 0.427 grams. What is the molecular weight of the compound?
- Question: Making use of these two expressions for alveolar partial pressures for CO2 and O2 as a function of ventilation-perfusion ratio, develop a relationship between Pa,CO2 and Pa,O2 (please use algebra). Values Given: σO2 = 1.4 x 10-6 M/mmHgσCO2 = 3.3 x 10-5 M/mmHg Wv = 5.6 x 10-5MWA = σO2*Pa,O2(so, WA varies)KO2 is 4.2 x 10-5MZO = 2.2 mM = 0.0022 MRT = 1.7x104 mmHg/MKc = 9.46PV,O2 , PV,CO2 and Pi,O2 can be assumed constant and you should estimate these.As part of a laboratory analytical test, one pint of n-hexane is evaporated per hour in a small evaporation chamber. How much airflow is needed through the chamber to keep the concentration at 5 percent of the LEL? The specific gravity of n-hexane is 0.66, the molecular weight is 86, and the LEL is 1.1 percent.Prepare 1500mL of 0.5N H2SO4 solution with specific gravity of 1.84g/mL and assay of 97%
- If a patient added a 17-g measured dose of polyethylene glycol 3350 (miralax) to 180 mL of water to use as a laxative. If the given volume of the resultant mixture was 195.6 mL. Now, determine the apparent density of polyethylene glycol 3350 and the specific gravity of the mixture.Take the solution 10.12g, add 10mL of deionized water, and cool the solution to 0 degrees Celsius. How much CuSO4, 5H2O crystallizes out?What volume of 0.250 MHCl is required to produce 2.00 L of H2gas (assume excess Mg)at STP? Mg(s) + 2 HCl(aq) H2(g) + MgCl2(aq) A. 22.0 mL B. 360. mL C. 2.80 L D. 11.2 L E. 714mL