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A sample of air occupied 1.00L at 25 degrees C and 1.00 atm. Explain what pressure in atm is needed to compress it to 239 cm3 at this temperature?
A buffer is made by dissolving 0.037 mol of potassium fluoride in 135 mL of 0.0237M hydrofluoric acid. Assume no volume change when the salt is dissolved. Calculate the pH of the buffer.
in a car engine gasoline represented c8h18 does not burn completely and some co a toxic pollutant forms?in a car engine
A buffer solution is 1.0 M in HF (Ka=6.8*10^-4) and 2.0 M in NaF. What is the pH of this solution after the addition of 0.4 mol NaOH to 1.0 L of this buffer solution
net ionic equation for the reaction of 0.100 M nitrous acid with Barium hydroxide. Calculate the pH of the acid - I'm lost - can you help with the calculations
Define the Beer-Lambert Relationship in detail.How does this relationship allow one to quantify an unknown?
Use the clausius-clapeyron equation to calculate the temperature at which pure water would boil at a pressure of 400 mmhg (hint:normal boiling point of water=760mmhg) Hvap=40.7kj/mol
maltose is a sugar with formulac12h22o11. a 250.ml aqeuoussolution of maltose at 25.00c has an osmotic pressure of5.61
Carbon-14 decays with a half-life of 5730 years. What is the first order rae constant for its decay in units of years^-1
The sun is 93 million miles from earth. Explain how many minutes does it take for light to travel from the sun to the earth. The speed of light is 3.00 x 108 meters per second.
Sodium thiosulfate, Na2S2O3, is used as a "fixer" in black and white photography. Identify the reducing agent in the reaction of thiosulfate with iodine.
a 150.0gram sample of a metal at 75.0ordmc is added to 150. g of h2o at 15.0ordmc. the final temp. of the mixture is
Compute the pH for each of the following cases in the titration of 50.0 mL of 0.220 M HClO(aq) with 0.220 M KOH(aq).
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