Kaochlor, a 10% (m/v) KCl solution, is an oral electrolyte supplement administered for potassium deficiency. How many milliequivalents of K+ are in a 30 mL dose?
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Kaochlor, a 10% (m/v) KCl solution, is an oral electrolyte supplement administered for potassium deficiency. How many milliequivalents of K+ are in a 30 mL dose?
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- You are supplied with the following: NaCl (Mr = 58.443 g/mol) 2.5 M Tris-Cl, pH 8 oplossing / solution (1 Litre) EDTA, sodium salt (Mr = 380.2 g/mol) 10 % Sodium dodecyl sulfate solution Proteinase K solution (50 mg dissolved in 1 ml ddH2O)You need a digestion buffer consisting of the following: 15 mM NaCl 75 mM Tris-Cl, pH 8 16 mM EDTA, pH 8 0.8 % Sodium dodecyl sulfate 0.75 mg/ml proteinase KCalculate: How will you prepare 500 ml of the digestion buffer?A 5% dextrose in 1/2 normal saline (D5 1/2 NS) solution is commonly administered to patients needing post-operative IV fluids. How could you prepare 500 mL of this solution? Dextrose is 5% (m/v) and the NaCl is 0.45% (m/v).A concentrated lidocaine solution contains lidocaine 1 g/5 mL. How many milliliters of this injection should be used to prepare a 500 mL IV infusion containing 8 mg/mL of lidocaine in D5W? Do not round.
- What is the molarity of a NaOH solution if 48.0 mLneutralizes 35.0 mL of 0.144 M H2SO4?In order to make a solution of the concentration 0.364 M, what mass of NaCl should bedissolved in 152 mL of water?You are supplied with the following: NaCl (Mr = 58.443 g/mol) 250 mM Tris-Cl, pH 8 solution (1 Litre) EDTA, sodium salt (Mr = 380.2 g/mol) 13 % Sodium dodecyl sulfate solution Proteinase K solution (150 mg dissolved in 1 ml ddH2O) You need a digestion buffer consisting of the following: 23.5 mM NaCl 750 uM Tris-Cl, pH 8 38 mM EDTA, pH 8 1.2 % Sodium dodecyl sulfate 1.75 mg/ml proteinase K Calculate: How will you prepare 750 ml of the digestion buffer? Show all your steps and calculations and remember to explain how exactly you will make it up.
- A 35 mL of solution of hydrochloric acid is neutralized by 15 mL of 0.5 M potassium hydroxide. What is the concentration of hydrochloric acid? The balanced equation is HCI + KOH - H,O + KCI O 0.75 M O 0.25 M O 0.214 M O 0.786 MThe-carotene molecule has λmax 450 nm and ɛ = 15.000 m2 / mol. Calculate the expected absorbance value for a solution in which 0.1 mg is dissolved in 10 mL of water. ( β-carotene, C40H56, 536 g/mol path length 1 cm)200 microliters of a standard solution of 0.200 mg/mL caffeine was mixed with 4.8 mL of 50 mM sodium phosphate buffer, pH 3: methanol (60:40 v/v). What is the concentration of caffeine, in mg/mL, in this solution? Give your answer to two significant figures.
- Rocephin (ceftriaxone sodium) 370 mg IM stat.The label on the ceftriaxone states to reconstitute the 1 g vial with 2.1 mL of sterile water for injection, which results in a strength of 405 mg/mL. How many milliliters will you administer?Guanosine (C10H13N5O5) in solution has a maximum absorbance at a wavelength of 275 nm. The molar extinction co-efficient at this wavelength is 84M−1cm−1and the path length is 24.7 cm. Through the use of a spectrophotometer, it is found that the that A275= 1.48. What is the concentration of the guanosine solution in grams/litre? Molecular weights (g/mol): C-12, H-1, N-14, O-16 Select one: A. 0.201869 g/L B. 0.435188 g/L C. 0.059919 g/L D. 0.294046 g/L E. 0.000713 g/LA 0.0284 M aqueous solution of lactic acid, HC3H5O3, a substance that accumulates in the blood and muscles during physical activity, is found to be 6.7% ionized. Determine the value of Ka for lactic acid.