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A benzoic acid solution was prepared by adding 0.488 g benzoicacid to a 100 mL volumetric flask and then adding enough water tobring the total solution volume to 100.00 mL. How many millilitersof 0.0989 M NaOH are required to titrate the entirebenzoic acid solution to the equivalence-point? What is the pH atthe equivalence-point?
If the experiment were repeated using the same mass of benzoicacid and a 50 mL volumetric flask instead of a 100 mL volumetricflask, how many milliliters of 0.0989 M NaOH would berequired to titrate the entire benzoic acid solution to theequivalence-point?
milk is pasteurised when heated to 63 C for 30 minutes, but if it is heated to 74 C it takes only 15 seconds for the same result. Find the activation energy for this sterilisation process
How much heat is released when 25mL of 0.10 M NaOH reacts with 50 mL of 0.10 M HCl?
how many grams of potassium sulfate are required to make 385 ml of 2.5M solution
Consider a steel tank whose volume is 65.0 and which contains gas at a pressure of 16500 at 21.What mass of does the tank contain?
When square brackets are placed around the formula for a substance, such as [NaOH], it indicates that we are working with the percent-by-mass
Compute the heat amount required to heat a 3.9kg gold bar from 28 degree Celsius to 68 degree Celsius. Given Specific heat capacity of gold = 0.128 J/g°C.
Calculate [H+] and the pH of the following solutions.
You have a balloon that is not permeable to gas molecules. The balloon is spherical and has a circumference of 3.141592654 m when it is filled with a gas at 20 EC and 1.0000 atm pressure.
Calculate the pH of a buffer made with 0.50 M phosphoric acid and 0.75 M sodium dihydrogen phosphate. Ka = 7.5 x 10^-3
If 5.00 ml of a solution containing .0400 M iron is placed in a 100.0 ml volumetric flask and filled to the mark with deionized water, what will be the concentration of iron in this new solution?
If we add more water to the vessel the pressure (remains the same, decreases, or increases)? Fully explain answer for credit
consider an excited-state hydrogen atom. What is the energy of the electron in the n = 3 level? ground state energy
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