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- CHE102 B urse Home KCHE102 Trad Exam 1 Item 6 Part A What is the mass of 3.00 L of an intravenous glucose solution with a density of 1.25 g/ml? Submit Request Answer Provide Feedback M10. The main difference between a dialysis membrane and a semipermeable osmotic membrane is a. the use of an emulsifying agent b. the size of the pore openings in the membrane c. the presence of charged particles on the membrane surface d. the presence or absence of a polyaccrylamide coating on the membrane surface e. no correct responseNEED ANSWER PLS FAST 50 g of NaCl has been dissolved in water to come up with a 120 mL of solution. The saline solution has a density of 1.3 g/mL. What is the concentration of the solution in terms of M? Responses A 6.27 M B 9. 17 M C 7.17 M D 0.66 M
- What is the [HA] (in mol L-1) of a solution containing 1.074 mol L-1 of a diprotic acid with pKA1 = 3.29 and pKA2 = 9.5 ? H2A + H2O = H30t + HA pkA1 HA + H20 = H3O+ + A2- pka2 Answer:What is the [HA¯] (in mol L-¹) of a solution containing 0.846 mol L-1 of a diprotic acid with pKÅ₁ = 4.82 and PKA2 = 9.19? Answer: H2A + H2OH3O++ HA¯ PKA1 HA¯ + H2O = H3O++ A²- PKA23. Calculate the molarity of a solution in which 0.250 moles of solute was dissolved in enough water to give 150. mL of solution. a. 1.67 x 10-3 M b. 0.167 M c. 1.67 M d. 0.600 M e. no correct response
- How many millimeters of concentrated HCl are needed to prepare 500mL of 0.25N HCl? 10.4 mL 11.4 mL 20.8 mL 22.8 mL Answer6. How many mL of 3.00 M CaCl2 solution would have to be diluted with water to produce 500.mL of 0.500 M solution? a. 167 b. 83.3 c. 60.2 d. 30.0 e. no correct responseWhat is the pK+ in the average human blood serum which contains18 mg of K+ per 100 mL? A. 0.74 B. 2.34 C. 3.64 D. 4.14 E. NO CORRECT
- Which of the following hormones increases blood glucose levels? a. glucagon and epinephrine b. insulin and epinephrine c. insulin and glucagon d. more than one correct response e. no correct responseWhich of the following statements concerning a saturated solution is incorrect? a. undissolved solute must be present b. undissolved solute may or may not be present c. undissolved solute, if present, is in equilibrium with dissolved solvent d. no correct responseLL ర N R O no correct response 22. Calculate the molar concentration of OH in a water solution that has a molar concentration of H* equal to 2.84 x 10-6. O 3.52 x 10-9 O 2.84 x 108 O 5.93 x 10-5 O 1.68 x 10-3 O no correct response MacBook Air 000 F4 F5 F6 F7 24 V 9- 9 08.