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A sample of 0.7500 g of a monoprotic weak acid, HA, is mixed in enough distilled water to produce 50.0 mL of a solution with a pH of 2.716. The solution is titrated with 0.1500 M NaOH, and in the middle of the titration, when [HA] = [A-], the pH = 4.602. Getting to the titration final point of the titration requires 49.30 mL of the titration agent.
Calculate the Ka of the acid.
How many grams of solute are needed to prepare 500.0 mL of a 0.375 M CH3OH solution.
The following data were collected for the rate of disappearance of NO in the reaction 2NO(g) + O2(g) ---------> 2NO2(g). Experiment [NO] (M) [O2] (M) Initial Rate (M/s)
what volume of nitrogen is is formed at 742 torr and 28.7dgree c by reacting 2.78 cm^3 of cu is density 8.95 g/cm^3 with 246ml of nitric acid ( 1.42g/cm^3) 68 %HNo3 by mass. Cu(s) + 4HNO3(aq)-------CU(NO3)2aq + 2NO2(g) + 2H2O(l). What is volume fo..
a 125 g metal block at a temperature of 93.2 Celsius degree was immersed in 100. g of water at 18.3 celsius degree. given the specific heat of the metal (Cp = 0.900 J/g Celsius), find the final temperature of the block and the water.
Find the rate of the reaction - What is the rate of the reaction?
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
Reaction of 3-pentanol with potassium iodide in aqueous ethanol gave no reaction under several different reaction conditions. If one adds a catalytic amount of para-toluenesulfonic acid
concentrated sulfuric acid 18.4-molar h2so4 has a density of 1.84 grams per milliliter. after dilution with water to
How much ammonia in a lab at 22 degree celcius would be necessary to make 1.0 g of urea if the yield is know to be less than 57%
If the pH of the weak acid solution in is 2.34 after 7.20 mL of the NaOH was added, what is the Ka of the acid?
26.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 3.53 atm at 25°C. Which of the sugars below was most likely the unknown..
at is the pH of this new solution. Assume no volume change after NaOH(s) was added. Molar Mass NaOH= 39.998 g/mol. Answer given was pH = 13.52, What are the steps to get here
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