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calculate the change in internal energy when 2 moles of CO are converted to 2 moles of CO2 at 1 bar and 25 degrees C. delta H=-566.0 kJ.mol-1
How many grams of KHP are needed to exactly neutralize 27.4 mL of a 0.235 M potassium hydroxide solution ?
A gaseous mixture contains 420.0 Torr of H2(g), 391.3 Torr of N2(g), and 79.5 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
consider a stone column 3.00 ft in diameter and 10.00 ft high. What is is mass in pounds if its density is 3.50 g/mL.
A mixture of 6.00 g He and 22.0 g Ne has a pressure of 530. mm Hg. What is the partial pressure of each of the gases?
A certain radiation has a wavelength of 474 nm. What is the energy, in joules, of (a) one photon
A sample of ammonia gas was allowed to come to equilibrium at 400 K.2NH3(g) ↔ N2(g) + 3H2(g) At equilibrium, it was found that the concentration of H2 was 0.0584 M, the concentration of N2 was 0.0195 M, and the concentration of NH3 was 0.430 M.
If 420 Joules are added to 20 grams of water to 30oC, what will be the final temperature of the water?
Atoms contain protons. 2)Nuclei move out of the paths of the alpha particles. 3)Neutrons have zero charge.
Determine How hot should be the air in a ballon be heated if it has initially a volume of 750. L at the temperature of 20 degree celsius and the final volume must be 1,000.l
What molarity of aqueous magnesium chloride solution can be expected to show the same conductivity
A container with a volume of 101 L contains how many atoms of argon gas at STP?
Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
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