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A cylinder with a piston contains 897 ml of dry oxygen at a pressure of 582 mm Hg and a temperature of 327 K. If the temperature is reduced to 286 K and the pressure increased to 628 mm Hg what is the new volume ?
Determine the numbers of moles of S8 that are required to make 0.600 moles of SF4.
Find the partial pressure and concentration of Nitrogen, Oxygen, and Carbon dioxide.
It takes 51.0 J to raise the temperature of an 10.2 g piece of unknown metal from 13.0C to 25.0C. What is the specific heat for the metal
if the initial water level in the graduated cylinder is 21.2 ml and the level rises to 27.7 ml after the object is placed in the cylinder, what is the volume of the object?
an electron is confined to a one dimensional box of length l it falls from the second energy level to the ground state and releases a photon with a wavelength of 322 nm. what is the length of the box
The following data were obtained for the determination of iron in serum by a spectrophotometeic method. Assuming the validity of Beer's Law for the experiment calcualte the concentration of iron in serum
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
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
Lead thiocyanate, rm Pb(SCN)_2, has a K_sp value of 2.00 times 10^{-5}.Calculate the molar solubility of lead thiocyanate in 1.00 it M rm KSCN.
What mass of barium sulfate is produced when 100.0 mL of a 0.100 M solution of barium chloride is mixed with 100.0 mL of a 0.100 M solution of iron(III) sulfate.
Sodium atoms emit light with a wavelength of 330 nm when an electron moves from a 4 p orbital to a 3 s orbital. What is the energy difference between the orbitals in kilojoules per mole?
The amount of H2O2 in 15.8g of hair bleach was determined by titration with a standard potassium permagnate soln. MnO4-(aq)+H2O2(aq)--Mn2+(aq)+O2
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