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Problem- Calculate the pH of a solution of a weak acid HA, which has a 0.128 M HA and 0.300 M [A-] if Ka is 0.0000274
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capacity change if you add 0.2 M of benzoic acid to the buffer made of 0.3 M of acetic acid and 0.5 M of sodium acetate
Given 6.4 mL of sulfuric acid (98%) calculate the number of mmols. (MW H2SO4: 98.08 g/mol, density: 1.840 g/mL)
a 250. ml sample of 0.0328m hcl is partially neutralized by the addition of 100. ml of 0.0245m naoh. find the
Compute the time (in hours) needed for the concentration of butadiene to decrease from an initial concentration of 0.0200M to a final concentration of 0.002M.
Define how changing the pH will allow you to separate the three compounds from each other you will use both water and the dichloromethane.
Oxalic acid, H2C2O4 has acid dissociation constants Ka1=5.9x10^-2 and Ka2=6.4x10^-5. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2C2O4
How much heat is absorbed by 15.5g of water when its temperature is increased 20.0C to 50.0C?The specific heat of water is 4.184J/(g.C)
A 2.51 g ore sample dissolved in acid required 28.62 mL of 0.0821 M KMnO4 to reach the equivalence point. Calculate the mass percent of iron in the ore.
A standardized solution that is 0.0100 M in Na is essential for a flame photometric determination of the element. Explain how many grams of primary-standard-grade sodium carbonate are necessary to prepare 700.0mL of the solution
The combustion of the alternative fuel, hydrogen gas, released 286 kj per mole of hydrogen gas combusted. if 10.0 l of hydrogen gas at STP was burned to produce electricity, how long would it power a 100 watt light bulb. assume no energy is lost t..
what is thee sum of the charges on alanine aspartic acid and lysine? how did you find this answer?now design a
draw the newman projection of butane along the C2-C3 bond where the dihedral angle between the two methyl groups is 60
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