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For the isothermal expansion of one mole of an ideal gas at 300 K from an preliminary pressure of 10 bar to a final pressure of 2 bar? G is equal to
a. Zero
b. ?H
c. -T?S
d. ?S
terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. it contains only c h
heat is removed from 200.0 g of water with an initial temperature of 30.0°C? The specific heat of water is 4.184 J/gdeg.
Assume it took the entire allotted time. If we used anisole instead of methyl benzoate to run an analogous reaction, how much time would a similar nitration reaction take.
a 0.374g sample of a metallic element m is completely dissolved in 100ml of 0.500n sulfuric acid. the liberated
Polonium crystals have a simple cubic unit cell. If the edge length of a unit cell is 310. pm, what is the radius a polonium atom
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
Combustion of a .2000g sample of vitamin C sample produced .2998 g of carbon dioxide and .0819 g of water. If this compound is composed of C, H, and O, then what is its empirical formula?
patient if the recommended dose is 6.50 mg of aspirin per Kg of body weight? How many molecules does the patient ingest?
calculate the change in internal energy for a system that is giving of 25.0 kJ of heat and is changing from 12.00 L to 6.00L in volume at 1.50 atm pressure.
why does the color change from blue to green or yellow near the endpoint of titration when the indicator is bromocresol green
What is the wavelength in micrometers of a photon emitted from a Hydrogen electron relaxing from the
What is the concentration of the acid and base form of acetic acid when you start the experiment? c) In the process of the enzyme catalyzed reaction, 5mM H+ is produced. What is the pH of the solution after the reaction is complete?
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