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Application of a constant pressure of 5.2 atm decreases the volume of a system by 12.0 L, concurrently the system absorbs 31.5 J of heat from the surroundings. What is the change in internal energy (in J)? (101.3 J = 1 L-atm)
show example of a standardization of a base naoh using primary standard khp show an
A freeway has 10,000 vehicles per hour passing a house 200 m away. Each car emits an average of 1.5 g/mi of NOx, and winds are blowing at 2 m/s across the freeway towards the house.
Problem- Consider a process in which an ideal gas is compressed to one-fifth of its original volume at constant temperature. Calculate the entropy change per mole of gas.
Describe a process in which entropy appears to decrease, but is coupled with an increase in entropy elsewhere in the universe.
Question- Calculate the equilibrium concentrations of Na+, Cl?,H+, CHO?2, and HCHO2when 50.0mL of 0.50 M HCl is mixed with 50.0mL of 0.50 M NaCHO2.
Calculate the partition coefficient of caffeine between water and each of the other three solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an aqueous solution?
Explain in details using the principles of kinetic molecular theory why the entire remaining sample of liquid does not vaporize
A sample of 0.836 gm of unknown compound containing barium ions ( Ba2+) is dissolved in water and treated with an excess of Na2SO4. If the mass of BaSo4 precipitate formed 0.7403 gm, What is the percent by mass of Ba in the original unknown compou..
1. explain what happens to pressure on the molecular level when the number of moles of gas is increased at constant
What volume of ethylene glycol, C2H6O2, a nonelectrolyte, must be added to 15.0 L of water to produce an antifreeze solution with a freezing point of -30*C? What is the boiling point of the solution?
Phosphorus trichloride, PCl3, has a molar mass of 137.32 g/mol. What is the mass of 0.285 moles of PCl3?
Problem- A mixture initially contains A, B, and C in the following concentrations: [A]= 0.450 M, [B]= 1.15 M, and [C]= 0.650 M. The following reaction occurs and equilibrium is established: A+2B C At equilibrium, [A]= 0.300 M and [C]= 0.800 M. Cal..
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