What is the total anion concentration (in mEq/L) of a solution that contains 5.0 mEq/L Na+ , 12.0 mEq/L Ca2+,and 2.0 mEq/L Li + ?
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What is the total anion concentration (in mEq/L) of a solution that contains 5.0 mEq/L Na+ , 12.0 mEq/L Ca2+,and 2.0 mEq/L Li + ?
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- To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 3 M NaCl (FW: 58.44 g/mol), and 5mM KH2PO4 (FW: 136.09 g/mol). How many grams of each will you need to make up 850 mL of PBS?It takes 175ml of 0.75 M H2SO4 to completely neutralize 285 ml of NaOH. What is the concentration of the NaOH solution?What would be the working stock concentration (in molarity) if you diluted 250 uL of a stock concentration of 10 uM in a total volume of 1 mL?
- Consider the titration of 50.00 mL of 0.160 M NH3 with 0.200 M HCl. Calculate the pH at the following volumes of the titrant: VT = 0.00 (Initial Stage) VT = 20.00 VT = 30.00 VT = 40.00 (Equivalence Point Stage) VT = 45.00 Kb = 1.76 x 10-5Using the formula V₁D₁ = V₂D2, what volume of a 1/100 (10-2) dilution would you need to produce 100 mL of a 1/10000 (10-4) dilution? (Note: provide your answer in decimal format to three decimal places.)A 1500 mL bag of 0.9% NaCl needs to have 9 grams of vancomycin added. How much water should the vancomycin be dissolved in prior to addition to ensure the resulting solution is isotonic with plasma? (SCE 0.06)
- 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 MWhat is the pH of the following buffer mixtures? (a) 100 mL 1 M acetic acid plus 100 mL 0.5 M sodium acetate (b) 250 mL 0.3 M phosphoric acid plus 250 mL 0.8 M KH2PO4A 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.