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A 520.0 mL of a buffer solution that is 0.175 M in HC2H3O2 and 0.165 M in NaC2H3O2, Calculate the inital pH and the final pH after adding 0.020 mol of HCl
carboxylic acids react with alcohols to form esters which are found in all plants and animals. what is the percent by mass of carbon in each of the following esters?
Use the Henderson-Hasselbach equation to calculate the pH of an acetate buffer in which the acetate concentration [CH3COO-] is three times greater than the acetic acid [CH3COOH] with a pKa of 4.76.
What is the percent purity of NaHCO3 in your baking soda? (The formula weight of NaHCO3 is 84.007 g/mole).
What state is being described in each case? Type either s for solid, l for liquid (make sure you type an l and not an i), and g for gas (assume ideal). If the statement applies to more than one state
Why is it preferable to use a metal ion buffer to achieve pM = 7, rather than just dissolving enough M to give a 10-7 M solution?
How many moles of photons with a frequency of 1.22e14 hz are necessary to produce
Sulfur in the air reacting with silver flatware to produce tarnish, or silver sulfide. What is the limiting and excess reagents?
For each alkene, indicate the direction of the dipole moment. For each pair, determine which compound has the larger dipole moment. a) cis-1,2-difluoroethene and trans-1,2-difluorothene
a cylindrical glass tube 13.0 cm in length is filled with mercury. The mass of mercury needed to fill the tube is found to be 107.5g. Calculate the inner diameter of the tube in centimeters.
Using Heisenberg's uncertainty principle, calculate the uncertainty in the position of a 1.50 mg mosquito moving at a speed
if 1.205 g of KHP required 25.25 mL of NaOH solution for complete neutralization, what is the molarity of the NaOH sodium hydroxide solution?
The density of carbon in the form of diamonds is 3.51 g/cm^3. If you have a 40-carat spherical diamond, what is the diameter of the diamond in millimeters?
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