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Calculate the boiling points of a 8.50 m aqueous solution of fructose. Boiling point constants can be found in the list of constant.
Tb= In Celsius
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- Discuss the suitability of bromocresol green and thymol blue (2nd change only) for use as indicators in an acetic acid - sodium hydroxide titration. Paragraph в I A + v ...8:12 O A O • O lll 63% i 1 BioChem Prob.PNG BIOCHEMISTR Calculate the pH of the following buffers containing; 2.95M HC2H302 and 1.5M NaC2H3O2 а. ka = 1.8X10-5 b. 3.0MHF and 2.5M NaF ka = 6.8X104pH 7.54 PaCO2 28 mm Hg PaO2 45 mm Hg HCO3- 22 mEq/L. Please provide an IPAP, EPAP and FiO2 in ( values not words) Desired FiO2 = [PaO2 (desired) x FiO2 (known)] PaO2 (known)
- For the following results of Thermodynamics of Borax Solubility, the volume of Borax solution titrated by HCI is 8.00 mL. Table 1. Volumes of hydrochloric acid required to titrate a saturated borax solution at varying temperatures. The hydrochloric acid was a solution standardized at 0.2912 M. Borax Volume added (mL) Temp. (°C) 8.00 8.00 8.00 8.00 8.00 HCI Volume (mL) 50.5 33.75 40.7 27.02 30.0 17.95 20.2 13.43 10.3 8.55 Using Thermodynamic formula (R= 8.31 J/K•mol) and the above results, (e) AS° = (J/K⚫mol) Type your answer...For the following results of Thermodynamics of Borax Solubility, the volume of Borax solution titrated by HCI is 8.00 mL. Table 1. Volumes of hydrochloric acid required to titrate a saturated borax solution at varying temperatures. The hydrochloric acid was a solution standardized at 0.2912 M. Borax Volume added (mL) Temp. (°C) 8.00 8.00 8.00 8.00 8.00 HCI Volume (mL) 50.5 33.75 40.7 27.02 30.0 17.95 20.2 13.43 10.3 8.55 Using Thermodynamic formula (R= 8.31 J/K⚫mol) and the above results, (b) What is the y-intercept of the best fitting line for this data? Type your answer...how to calculate these? can you give me the steps or the equations for that? 2ul St.1 St.2 St.3 St.4 Absorbance 595nm 0.926 0.444 0.421 0.462 0.932 0.412 0.407 0.393 Ç Average Abs Corrected Abs 595nm 595nm 0.929 0.428 0.414 0.4275 0.5615 0.0605 0.0465 0.06 [Protein] (µg/ml) 103.98 11.20 8.61 11.11 Volume (ml) 20 40 8 4 [Total Protein] (ug) 2079.63 448.15 68.89 44.44
- Tirofiban (C22H36N₂O5S MWt = 440.6) is present as tirofiban HCI monohydrate MWt=495.1) at 0.281 mg/mL in a concentrated solution. (C22H36N2O5S.HCI.H₂O A solution for infusion is prepared by extracting 50 mL from a 250 mL bag of 5% glucose s and adding 50 mL of concentrated solution. Sonya who weighs weighs 60 kg requires a tirofiban dose of 0.4 mcg/kg/min for 30 minute- What volume would remain after 30 minutes? Answer: 94.53 mL X The correct answer is: 236 mL80mL of a 0.3M solution of hexapeptide Leu-His-Cys-Glu-Asn-Arg is adjusted to pH=pI. The solution is then titrated with 0.2M HCL to a final pH of 2.1. Sketch the titration curve, labelling the pH and volume axes. Indicate the volume of HCL needed to reach relevant pKa value and equivalence point(s)z Relevant pKa values are: 2.1, 4.3, 6.0, 8.3, 9.8, and 12.5.67. Purified water contains not more than 10 ppm of total solids. Express this concen- tration as a percentage. 67. 0.001% w/v
- Determine the fluoride ion concentration for a saturated solution of magnesium fluoride. K sp = 7.4 x 10-11The following values were taken from the Richard's table on the thermal death kinetics of B. stearothermophi. cal/mol K): (A=4.9x1037min', E=67.48 kcal/mol, R=1.987 Temperature, °C rate The cumulative del factor Specific constant k, min death -1 V 120 1.47 7.25 121 1.83 9.08 125 4.35 22.08 130 12.55 65.10 (i) The time taken for heating, cooling and holding periods in the sterilisation of a batch fermentor medium for the destruction of B. stearothermophilus were: time to heat from 100 to 121°C = 30 min time to cool from 121 to 100 °C =16 min time of holding at 121 °C = 12 min Calculate the destruction ratio (No/N) for the process. (ii) If the sterilisation were to be carried out continuously at 130 °C, and the heating and cooling characteristics were: time to heat from 100 to 130 °C = 2 min time to cool from 130 to 100 °C = 1 min what holding time would be required to achieve the same ratio of (No/N) as in section (i) above? State all the assumptions made in your calculations.NaOH.2L X.02mol/L = .004 mol, H3PO4.8L X.15 mol/L = .12 mol H₂PO4 HPO4² + H+ .108 mol start A. If 200 mls of 0.02 M NaoH is added to 800 mls of 0.15 M phosphoric acid buffer at pH 8.2, what is the resultant pH? (pK1 = 2.1, Pk2=7.2, pk3=12.2) add .004 mol OH- end .012mol -.004 .008 mol pH= pka + log [A-]/[HA] = 7.2 + log.112/.008 +.004 .112mol pH=8.35 B. If the same amount of NaOH in part A is added to 800 mls of water, what is the resulting pH? .004mol/1L =.004 [OH-] pOH = 2.4, pH -11.6