4. A chemist working for a drug company synthesizes four molecules that bind to the androgen receptor. You carry out a quantitative binding assay for each of these compounds using a purified androgen receptor preparation and determine the following K, values for the compounds: A. 1X 10*M B. 1X 10°M C. 2.5 X 10°M D. 1X 101°M Which of the compounds has the greatest affinity for the androgen receptor?
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- You are viewing Sonjae Wallace's screen REC View Options Q8: Level 3+ (Unit 13, L.G. 11) Given the following information: O1 + H,0 = HOI + OH H,0 = %H;0* + ½OH K, = 5 x 104 K2 = 1 x 107 What is the value of K for the rxn HOI + H,0 = 01+ H,0*? A. 2 x 10-11 B. 5 x 10 11 C. 2x 10-4 D. 4 x 104 To: Type P Type here to search a brt %23 * 4 5 Q Y. LL M alt alt ctri15.1 mg of β-carotene resulted in a blood plasma level of 43 nmol L-1 of Vitamin A.100% of the β-carotene is converted to Vitamin A (286 g mol-1), and that absorption of β-carotene occurs predominately in the small intestine in an aqueous volume of 600 mL, estimate the equilibrium constant for the reaction below:the ratio is 2 molecules of Vitamin A converted by enzymes from 1 molecule of β-caroteneVitamin A (intestine) ⇌Vitamin A (plasma)The undissociated base (B) is present in the greatest concentration, with the products being present in relatively smaller amounts in this equilibrium mixture. How would this affect the magnitude of Kb? Do you expect it to be small or large? Which is the strongest base? Name of base Ammonia (NH3) Methylamine (CH3NH2) Ethylamine (C2H5NH2) Diethylamine (C2H5)2NH Pyridine (CSH5N) Kb value 1.76 x 10-5 Why? 4.4 x 10-4 5.6 x 10-4 Which is the weakest base? 1.3 x 10-3 1.7 x 10-9 Why? The larger the Kb the (stronger/weaker) the base. Since a weak base dissociates incompletely setting up an equilibrium, what method could you think of that you could use to determine the concentration of [OH"] ions given the initial concentration of the acid and its Kb?
- Write the Ksp expression for the sparingly soluble compound calcium phosphate, Ca3(PO4)2. Ksp = If either the numerator or denominator is 1, please enter 1.Write the Ksp expression for the sparingly soluble compound silver phosphate, Ag3PO4. Ksp = If either the numerator or denominator is 1, please enter 1.2. Is the following equilibrium reaction homogeneous or hetero- geneous? CaF₂ (s) Ca²+ (aq) + 2F- (aq) + heat 3. Write the equilibrium constant expression for the reaction CaF₂ (s) Ca²+ (aq) + 2F- (aq) + heat. 2
- The following reactions all have K > 1.1) C9H7O4- (aq) + HF (aq) HC9H7O4 (aq) + F- (aq)2) CH3COO- (aq) + HF (aq) F- (aq) + CH3COOH (aq)3) HC9H7O4 (aq) + CH3COO- (aq) CH3COOH (aq) + C9H7O4- (aq)Arrange the substances based on their relative acid strength. CH3COOH HF F- C9H7O4- HC9H7O4 CH3COO- strongest acid intermediate acid weakest acid not a Bronsted-Lowry acidConsider the following equilibria:Ca(OH)2(s) ⇌⇌ Ca2+(aq) + 2 OH-(aq) K1 = 6.5 x 10-6 H2O(l) ⇌⇌ H+(aq) + OH-(aq) K2 = 1.0 x 10-14Given these equilibria, what is the equilibrium constant, K, for the following reaction?Ca(OH)2(s) + 2 H+(aq) ⇌⇌ Ca2+(aq) + 2 H2O(l)The following reactions all have K < 1.1) HCOO- (aq) + C6H5COOH (aq) HCOOH (aq) + C6H5COO- (aq)2) NO2- (aq) + C6H5COOH (aq) C6H5COO- (aq) + HNO2 (aq)3) HCOOH (aq) + NO2- (aq) HNO2 (aq) + HCOO- (aq)Arrange the substances based on their relative BASE strength. HNO2 NO2- C6H5COO- C6H5COOH HCOO- HCOOH strongest base intermediate base weakest base not a Bronsted-Lowry base
- The value of K, for ethylamine, C,H¿NH, is 4.30×104. Write the equation for the reaction that goes with this equilibrium constant. + +[Review Topics] [References] Consider the following system at equilibrium where AH = 92.7 kJ, and K = 1.80 x 10-4, at 298 K. NH₂HS(s) → NH3 (9) + H₂S(g) When some moles of NH4HS(s) are added to the equilibrium system at constant temperature: The value of Ke Oincreases Odecreases Oremains the same 20 E The value of Qc Ois greater than Ke Ois equal to Ke O is less than Ke C The reaction must Orun in the forward direction to reestablish equilibrium. Orun in the reverse direction to feestablish equilibrium. Oremain the same. It is already at equilibrium. The number of moles of NH3 will Oincrease O decrease Oremain the same $ 4 Submit Answer 8888 R 7 F V Show Hint % 5 Retry Entire Group T G Cengage Learning | Cengage Technical Support A 6 B 9 more group attempts remaining MacBook Air Y H & 7 N C * 00 8 M ( 9 K O V O L P V 4) Previous Next> Save and Exit AWrite the dissociation equation for c2h2o4 (acid or base), write the expression for the constant equilibrium according to the law of mass action for c2h2o4, from pKa calculate the value of Ka and Kb for c2h2o4