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calculate the ph of an aques (buffered) solution with a volume of 400ml which contains 35.8 g of nh4cl, ammonium chloride, and 23.2 g of ammonia, nh3, (kb= 1.8x10^-5
nh4cl - 53.5moles per gram
nh3-17moles per gram (I think im supposed to use the henderson hasselbach formula))
Suppose you add 4.25 g of naphthalene, C10H8, to 67.9 g of benzene, C6H6, and they form an ideal solution. The vapor pressure of pure benzene is 0.1252 atm at the temperature of the experiment.
Consider the titration of a 22.0 -mL sample of 0.110 M HC2H3O2 with 0.130 M NaOH. Determine each of the following. A. The initial pH B. the volume of added base required to reach the equivalence point in mL
Air is 21 mole percent oxygen, that is, 0.21 atm oxygen at 1 atm. Suppose the pH of the water is 5.91 and that the concentration of iron(II) in the water is 3.29x 10-5 M, what is the potential of the corrosion reaction under the above conditions a..
What is the solubility of calcium phospate in pure water. Also what is the solubility of it in 0.3m Na3Po4.
depending on the type of chemical reaction molecular bromine br2 can be a source of br br- or brmiddota. provide a
An aqueous solution contains 12.5% NaCl by mass. What mass of water (in grams)is contained in 2.5L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.
What is being calculated when the moles of a solute in a solution is divided by the molarity of the solute in the solution. The moles of solute in the solution. The moles of solution
Determine the molarity of this solution. (b) If I use 1 cup of vinegar (236.588 mL) to help create a cleaning solution for my windows, how many molecules of acetic acid is this?
you need to make a solution of cano32 for a class demonstration. first you measure a quantity of the solid cano32 by
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4.
the volume of a gas is 93 mL when the temperature is 91C. If the temperature is reduced to 5C without changing the pressure, what is the new volume of the gas?
Suppose you were given a pure stereoisomer that rotated the plane polarized light either +60 degrees or -120 degrees, i.e a uniform colour is observed for both of these readings.
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