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85.0 moles of argon undergo an isothermal, reversible expansion from an initial volume of 75.0 m3 to a final volume of 175.0 m3. The Temperature is a constant 400.0 K. Calculate won, the work done on the system, and report the answer in Joules.
A substance has a solubility of 350 ppm. How many grams of the substance are present in 1.0 L of a saturated solution.
A 275.0 mL sample of O2 is collected over water at 60.0 degrees Celsius. The total pressure is 755 torr. What is the volume of the O2 at STP? (The vapor pressure of water at 60 degrees Celsius is 149 torr)
Mixed Aldol Each of the following compounds can be prepared by a mixed aldol condensation reaction. Give the structure of the aldehyde and/or ketone precursors for each aldol product and formulate the reaction.
How wil you determie the relative reactivites of aromatic compounds? Outline the procedure that you need to do in the laboratory to determine the relative reactivites of the following:
A beaker with 120 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.50 mL of a 0.250 M HCl solution to the beaker. How much will the pH..
Stoichiometry limiting reagent: find the reagent in excess. then calculate the mass or volume of the products formed.
Design a tube and shell heat exchanger for the fluids and duty given for you and complete Project Management tasks
A 50.0 mL sample of 0.40 M benzoic acid, C6H5COOH, a weak monoprotic acid, is titrated with 0.48 M NaOH. Calculate the pH at the equivalence point. Ka of C6H5COOH = 6.5 10-5
A volume of 95.0ml of h2o is initially at room temperature 22.0 C. A chilled steel rod at 2.00 *C.is placed in the water. If the final temperature of the system is 21.2 *C. what is the mass of the steel bar?
Calculate the mass of water formed by the complete reaction of 935 g of propane (C3H8) with excess oxygen. (Write a balanced equation)
You have two gas tanks, one is 7.00 L and the other is 3.50L, and one of the tanks has oxygen in it and the other has acetylene. If the tank wth the oxygen has a pressure of 145 atm, what is the pressure of the other tank?
Using the calibration data provided below, calculate the concentration of cocaine (mg/mL) in the original urine sample.
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