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A football is inflated to a pressure of 1.00 x 10^3 torr in a room at 25 degrees C. If the game is played at 10 degrees C, what will the pressure in the ball be, neglecting any volume change in the ball and assuming that it doesn't leak?
What is the molarity of a HCl solution if the reaction of 200mL of the solution with excess CaCO3 produces 10.5L of Co2 gas at 725mmHg and 18C?
Calculate ?Ssys (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
Mixture where particles remain in semipermeable membrane, Particles of this mixture remain inside a semipermeable membrane. What is it Solution, colloid or suspension?
A gaseous mixture of O2 and Kr has a density of 1.184 g/L at 385 torr and 300. K. What is the mole percent O2 in the mixture?
22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure
A patient needs 0.004g of a sulfa drug. There are 5.00mg tablets in stock. How many tablets should be given.
Use the molarity of the EDTA solution and the average volume of EDTA added to calculate the average number of moles of EDTA required for the titration.
The decay rate for carbon 14 in the sample is 14.2 dis/min per graham carbon. In what year was the coffin most likely made? ( Assume the half life of carbon-14 is 5730 years and that the decay rate for carbon 14 in living organisms is 15 dis/min p..
what will be the final temperature of the solution in the calorimeter? The heat of solution,delta H solution, ofCaCl2of is -82.8kj/mole.
In the first step of the synthesis of PABA, why was it necessary to add sodium acetate to have reaction of p-toluidine with acetic anhydride?
Determine the concentrations of BaBr2, Ba2 , and Br- in a solution prepared by dissolving 1.62 × 10-4 g BaBr2 in 1.50 L of water.
the structure of a protein by both NMR and X-ray crystallography and they differ in one region. Which is more likely to be the true structure of the protein when dissolved in solution? Why?
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