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Question: A solution contains 0.1 mole nepthalene and 0.9 mole benzene was cooled upto a temperature T, the solution was then seperated from solid in a beaker and it was heated upto 353K temp where thr solution was found to be 670 torr. Given that P°f and P°b of benzene is 278.5k and 353k.?H fusion is 10.67kj/mol. Calculate temperature T to which it was cooled and mass of solid benzene which froze out.
A researcher found that 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur, when 10.0 grams of lead reacted with 3.00 grams of sulfur, and when 18.0 grams of lead reacted with 1.56 grams of sulf..
When aqueous solutions of cobalt (II) chloride and sodium hydroxide are mixed what precipitate forms
Problem- The van der Waals equation adjusts for properties of real gases with correction factors 'a' and 'b'. Between CO and O2, which would have larger correction factor 'a' and why
how much pv work is done if 88.0 grams of c 2h 4 ethylene and 120 grams of hydrochloric acid hcl are permitted to react
Important information about Organic Chemistry, The most reasonable formula for a compound demonstrating M+ =101 with a minor M+1 peak is
When 4.21 g of a nonelectrolyte solute is dissolved in 165 mL of water at 26 °C, the resulting solution exerts an osmotic pressure of 909 torr
Calculate the vapor pressure of water above a solution prepared by dissolving 36.0 g of glycerin (C3H8O3) in 120 g of water at 343 K. (The vapor pressure of water at 343 K is 233.7 torr.)
What would you expect to happen if you combined 10.0mL of 10^-2 M acetic acid and 5.0mL of 10^-2 M sodium hydroxide? What would be the concentrations of acetic acid and sodium acetate in this solution
Suppose Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm. Explain what is the radius of a gallium atom
A sample of N2 gas occupies 2.40 L at 20°C. If the gas is in a container that can contract or expand at constant pressure, at what temperature will the N2 occupy 4.80 L
Determine the number of moles of O2 produced by the decomposition of 426 g of NaClO3
What mass of solid sodium formate (of MW 68.01) must be added to 140 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 4.16? Ka = 0.00018 for HCOOH.
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