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A system of propane and n-butane exists in two phase vapor / liquid equilibrium at 10 bar and 323 K. The mole fraction of propane in the vapor phase is 0.67 and 0.40 in the liquid phase. Additional pure propane is added to the system and the system is brought again to equilibrium at 10 bar and 323 K. What is the effect of the propane addition on the mole fractions of propane in the vapor and liquid phases?
calculate the number of excess reagent units remaining when 41 C2H4 molecules and 102 O2 molecules react?
A camping lantern uses the reaction of calcium carbide, CaC2 (s) , and water to produce acetylene gas C2H2 (g) , and calcium hydroxide, Ca(OH)2 (s) . How many grams of water are required to produce 1.55 moles of acetylene gas
Indium has only two naturally occurring isotopes. The mass of indium-113 is 112.9041 and the mass of indium-115 is 114.9039 .
A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.05% carbon dioxide, and 0.930% argon by volume. How many molecules of each gas are present in 1.00 L of the sample at 31 degrees C and 1.00 atm?
a 1.00L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate pH of the solution after the addition of 100.0mL of 1.00M HCl. Ka for HF is 3.5x10^-4
The temperature of a block of copper metal (molar mass 63.55 g mol-1) fell by 8.52 K when the copper block released 64.5 J of heat. What is the mass of the copper block?
Explain Solid State Chemistry, 1) Write the balanced chemical equation for Fe2O3+2Al?2Fe+Al2O3 using the lowest possible whole number coefficients.
An unknown mass of each of the given substances as with The final temperature is recorded as indicated 1.Pyrex glass (tf=67.6 C), 2.Sand (tf=70.4 C), 3.ethanol (tf=45.9 C), initially at 19.0 degrees celsius, absorbs 1930 Joules of heat
the structure Y---X---Y (2 lone pairs around X) could be abbreviated as XY2Z2. Classify these structures according to their shape.
Acetic acid is a monoprotic acid and thus the reaction stoichiometry is 1:1. that is one mole of sodium hydroxide will neutralize one mole of acetic acid.
If the solubility of phthalic acid in nearly boiling water is 180 g/L, how much water is required to recrystallize 2.0 g of phthalic acid?
A gas bottle contains 0.650 mol of gas at 730 mm Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle.
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