3. Severely dehydrated patients may be given a "physiological buffered saline" (PBS) solution wit...
3 Severely dehydrated patients may be given a "physiological buffered saline" (PBS) solution with a pH of about 7.4 intravenously to restore thbeir fluid balance Do vou think that PBS would contain only sodium chloride in the solution? Justify your answer. www .4- Honda. Use the dilution equation to calculate the number of milliliters of 3.00 M NaCl needed to make 400.0 mL of a PBS solution with a final sodium chloride concentration of 0.154 M. Show your work. Calculate...
Severly dehydrated patients may be given a “physiological buffer saline” (PBS) solution with a pH of 7.4 intravenously to restore their fluid balance. Do you think that PBS would contain only sodium chloride in the solution? justify your answer.
Phosphate buffered saline (PBS) is a buffer solution commonly used in biological research. The buffer helps to maintain a constant pH. The osmolality and ion concentrations of the solution usually match those of the human body. A) You need to prepare a stock solution at pH 7.00 with KH2PO4 and Na2HPO4 (pKa =7.21). What would be the respective concentration of these substances if you wish to obtain the final phosphate concentration [HPO4 −2 ] + [H2PO4 − ] = 0.3...
Johnny wished to create a 0.300 M NaCl solution. Johnny only had 50.0 mL of water, however. To create his goal solution, Johnny knew he needed to know the molar mass of NaCl, which was [Select ] Next, to find the the number of moles of Naci he needed, Johnny simply multiplied the [Select] by the volume of water, in liters, which was [Select) L. Then, he calculated the number of grams of NaCl he needed taking this number of...
Quiz 8 X What is the molarity of 0.945 L of a solution that contains 0.227 moles of Fe(NO3)3? M 0.227 nol O.945L 응급주 240 M O.227 0.445 24.02M 240 What is the molarity of a solution that contains 50.0 grams of sodium hydroxide, NaOH, in 855 mL of solution? The molar mass of NaOH is 40.0 grams. imoi 1,25 moi No DH 509 409 S0 1585 M M: .SSL n 1,25 T55 mL L 3 What mass of zinc...
Show calculations for the solutions. Solutions for DNA cloning and DNA analysis a. 0.5M EDTA (disodium ethylenediaminetetra-acetate; tw 372.2), pH8.0 prepare 50mL hint: the disodium salt of EDTA will not go into solution until the pH of the solution is close to 8.0. To accomplish this, you will need to add approximately 2g of NaOH pellets b. 50XTAE (Tris-acetate/EDTA) (working solution at 1x is 0.04M Tris-acetate, 0.001M EDTA) Make 100mL 2M Tris base (fw 121.1) 5.71mL glacial acetic acid 0.05M...
i 52) (a) Use the enderson-Hasselbalch equation to calculate the pH of a buffer solution that is 0.45 M in and 0.15 M in NH,. (b) How would you prepare arn (The Ks for NH, is 1.8 x 10) NH4CI-NH, buffer that has a pHi of 9.007 of 0.100 M. The relevant equilibrium is shown below. What is the pH of this buffer solution? 9 54) At 40 C, the pH of water is 6.77, what is lon-Product Constant for...
Please answer #2 php/ 20 %20Extra%20Credit%20-%20Spring%2020 18.pdf CHEM 108- Extra Credit-Spring 2018 IMPORTANT: Show ALL your work. Don't forget the significant figures and units!! Would the following mixtures result in buffer solutions? (Justify your answers) 1. a 100.0 ml, of 0.10 M NH, 100.0 mL of0.15 M NHaCl b. 50.0 mL of 0.10 M HCIO4, 35.0 mL if 0.15 M NaCIO c. 125.0 ml, of 0.15 CH?NH2. 120.0 mL of 0.25 M CHNE ICI d. 165.0 mL of 0.10 M...
53) A buffer solution contains carbonic acid (H CO) and sodium bi carbonate (NaHCO), each at a concentration of 0.100 M. The relevant equilibrium is shown below. What is H:COs(ag)+ HOo (a)+HCOs (ag) K.-4.5x 10 54) At 40 C, the pH of water is 6.77, what is lon-Prodact Constant for Water, Kw.at 40°C 55) If a solution of acetic acid has a pH-2.74 and a pK474, wh in the solution? Show your calculations is the ratio of (CH Co/ICOH) 56)...
You are given a stock solution of ribosylated collagen. In order to complete your experiment, you will need four 1ml aliquots of ribosylated collagen in phosphate buffered saline (1M), each containing 67.5 ng/ml. The stock concentration is 10 ug/ml, What steps are required to achieve the required concentrations? During lab a classmate accidentally breaks an Erlenmeyer flask: a single shard causes a 50mm laceration between his elbow and wrist. You decide that the best way to keep the wound clean...