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When 0.152 mol of solid PH3BCl3 is introduced into a 3.0 L container at a certain temperature, 8.44 x 10-3 mol of PH3 is present at equilibrium:PH3BCl3(s) <=> PH3(g) + BCl3(g)Construct a reaction table for the process, and use it to calculate Kc at this temperature.
the standard molar enthalpy of vaporization for water is 40.79kj/mol. what mass of steam is required to release 500. kj of energy upon condensation.
A gas mixture is made by combining 7.9 g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73 L.
A mixture of gases containing 21.0 g of N2, 106.5 g of Cl2, and 12.0 g of He at 14 oC is in a 50.0 L container. What is the partial pressure of N2?
What is the concentration of a solution formed by diluting 25.0 mL of a 3.2 M NaCl solution to 135.0 mL.
what is the corresponding pressure difference between points A and B, in mmHg. At which point (A or B) is the pressure higher, and why? The temperature is 60 °F throughout
Why must you avoid using your hands in handling the magnesium ribbon and the crucible and cover? 2.Why must objects be cooled to room temperature before taking their weights(masses)
How many moles of I2 were used in the titration? How many moles of SO2 were in the 5.00 mL sample of wine? Determine the mass of SO2 (in mg) in the 5.00 mL sample of wine. Determine the concentration of SO2 (in mg/L) in the wine.
you dissolve 15.0g of sucrose C12H22O11 in a cup of water (225g) what is the freezing point of solution (kf of water is -1.86).
the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3. How far into the sheet from this high-pressure side will the concentration be 1.8 kg/m3?
Compound A, C9H12, undergoes nitration to give 3 products. The 1H NMR spectrum of A shows a complex three-proton multiplet at 6.92-6.99 ? and a nine-proton singlet at 2.34 ?
Calculate the volume in milliliters of a 0.30 M acetic acid solution that contains 0.0142 mol HC2H3O2.
explain why this series of reaction will produce the 3,5-dibromotoluene and direct bromination of toluene produces the 2,4-dibromotoluene.
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