Please show as much work as possible but also write neatly :) Thank you so much...
please show all work and write neatly. when solving the 50ml and 100ml please explain how to find the ph. 5. Consider the titration of 100.0 mL of 0.100 M H2NNH>/hydrazine (Ky = 3.0 x 10-6) by 0.200 M HNO3. Assume that hydrazine is monoprotic. Determine the following: a. pH before any HNO3 is added b. volume of base to reach the equivalence point c. pH when 20.0 mL of HNO, has been added d. pH when 25.0 mL of...
15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.462 M HNO2 (Ka for HNO2 = 4.0 x 10–4). What is the equilibrium concentration of NO2– ions?
Please show work as neatly as possible, thank you so much in advance! Decide whether or not the method of undetermined coefficients can be applied to find a particular solution of the given equation. 60''(x) - 70(x) = 4x sin 2x + 4x cos 2x Choose the correct answer below. O O Yes No
Please show all workings please. Thank you so much!! Phenol (C6H5OH) is an aromatic compound that is soluble in water. The pK, for phenol is 9.95. Questions A27-A29 consider separate solutions of phenol prepared by dissolving 0.0250 moles of phenol in water and making the volume of the solution up to 500 mL. Question A27 The pH of the phenol solution is closest to? A. 0.05 B. 1.3 C. 5.6 D. 6.6 E. 10.0 (2 minutes) Question A28 What is...
Please show work, thank you 2. a) Consider a 100.0 mL sample of 0.175 M H2Cro,. For H2CrO, K. = 0.18 & Ka2 = 3.2 x 10-7. i) Determine the pH of this solution. i) What percentage of H CrO, ionizes? What percentage of HCrO iii) Rank concentration of the molecules ions present in solution from lowest concentration to the highest ionizes? concentration. i) Determine the pH. concentration. i) Determine the pH b) Consider a 100.0 ml, sample of 0.175...
Please show work as neatly as possible, thank you so much in advance! The auxiliary equation for the given differential equation has complex roots. Find a general solution. y" - 6y' +45y = 0 y(t) =]
help please! thank you! 2. In the Spectrophotometric analysis of your unknown compound you will create a standard curve with a stock solution of 0.400 M Cu. Determine the concentration of Cu in tubes 1 -4. Complete the values here and in this same table in your lab book. tube Contents Concentration of Cu ions (M Approximately 10 mL of1 M HNO 4.0 mL of 0.400 M Cu (stock standard) and 6.0 mL 1 M HNO 2 7.0 mL of...
Red blood cells transport oxygen throughout our body. However, oxygen can also dissolve in blood plasma (Henry's law constant = 3.74 '10-2 mol/L atm at body temperature, 37°C). What is the concentration of oxygen in blood (M) for a scuba diver at a depth where the pressure is 2.0 atm. Assume the mole fraction of oxygen in the tank is 0.21. O 0.11 M 1.3 x 10-2M 7.8 x 10-3M 2.7 x 10-3M 1.6 x 10-2M
This is a Biochemistry 200 level question, please answer neatly and as soon as possible. Thank you! QUESTION 2 The kinetics parameters of several enzymes are listed below. Arrange the enzymes in order of decreasing catalytic efficiency. Enzyme Substrate kcat (s-1 Km Triosephosphate isomerase Glyceraldehyde-3-phosphate 4.3 x 103 0.47 mm Catalase H202 1.1 M Fumarase fumarate 5.0 x 10-6 M 4.0 x 107 8.0 x 102 5.7 x 103 1.0 x 106 Crotonase crotonyl-CoA 2.0 x 10-2 mm 1.2 x...
1. Calculate the molarity of the following solutions: a. 318 g Mg Br, in 859 ml solution b. 8.28 g Ca(C,H,O,), in 414 ml solution c. 31,1 g Al,(80.), in 766 ml solution d. 59.8 g CaCl, in 100 ml solution e. 313.5 g LICIO, in 250 ml solution | 849 Calculate the moles of solute needed to prepare each of the following: 2. LOL of a 3.0 M NaCl solution b. 0.40 L of a 1.0 M KBr solution...