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You need to produce a buffer solution that has a pH of 5.44.You already have a solution that contains 10 millimoles ofacetic acid. How many millimoles of acetate (the conjugate base ofacetic acid) will you need to add to this solution? The pKa of acetic acid is 4.74.
A volume of 60.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4)What was the molarity of the KOH solution if 22.2 mL of 1.50 M H2SO4 was needed?
Determine the mass of a mixture of 1.33x10^24 formula units of Sodium sulfate, 1.500 moles of Water and 3.77g of silver chloride?
consider a carnot refrigeration cycle with a working fluid of r-134a operating between temperatures of -10oc and 20oc.
Suppose that you first titrated 25.0 mL of 0.500 M HCL with 0.500M NaOH and then 25.0 mL of 0.500 M of a weark acid HA with 0.500M NaOH. How would the titration curves compare at 10 or 15 ml of NaOH beyond the equivalence points? Explain.
When CO(g) (9.035 mol) and 144.6 grams of O2(g) in a 220.0 L reaction vessel at 608.0 °C are allowed to come to equilibrium the mixture contains 0.02021 mol/L of CO2(g). What is the concentration (mol/L) of CO(g)? 2CO(g)+O2(g) = 2CO2(g)
A beaker contains 21.0 g of hot water at a temperature of 88.8oC. After a while, the temperature of the water falls to 24.3oC. How much heat was lost by the water. The specific heat of water is 4.184 J g-1 oC-1.
A sample gas at standard prssure is heated from 20c to 200c. If the volume remains constant. What is the fimal pressure in mmhg
We burn 12.50L of ammonia in 20.00L of oxygen at 500 degrees celsius. What volume of nitric oxide, NO, gas can form. what volume of steam, H2O (g) is formed. Assume that all gases are at the same temperature and pressure, and that the limiting rea..
How many grams of solute are needed to make each of the following solutions?296.5 mL of 0.333 M barium acetate
the rate constant of a reaction is 8.50 10-5 lmols at 195degc and 9.30 10-3 lmols at 258degc. what is the activation
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
a solution of hcl in water conducts an electrical current but a solution of hcl in hexane does not. explain this
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