Explain what is the change in enthalpy

Assignment Help Chemistry
Reference no: EM13169734

An unknown organic liquid freezes at 7.83 C and has a delta S for the transition of -0.02402 kJ/K*mole. what is the change in enthalpy for 2.854 moles of the liquid?

Reference no: EM13169734

Questions Cloud

Will the solution be saturated unsaturated or supersaturated : The addition of a crystal of sodium chlorate to a sodium chlorate solution causes additional crystals of sodium chlorate to precipitate. Will the solution be saturated, unsaturated, or supersaturated?
Explain what is the change in enthropy for this process : what is the change in enthropy for this process in kJ/K*mole. The atomic mass of oxygen is 16.00.
How many grams of acetylene are in the tank : A 45.0-L steel tank at 20.0°C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
Explain pressure is compressed by a factor : what is the delta S in J/K*mole when 1.645 grams of methane (FW=16.04) at 0.1091 atm pressure is compressed by a factor of 8.064 at a constant temperature of 22.81
Explain what is the change in enthalpy : what is the change in enthalpy for 2.854 moles of the liquid?
What mass of substance must evaporate in order to freeze : What mass of this substance must evaporate in order to freeze 250 of water initially at 25? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
What is the volume of the diluted h2so4 solution : 120.0 mL sample of a 0.81 M H2SO4 solution is diluted with enough water to reduce the concentration of the solution to 0.50 M. What is the volume of the diluted H2SO4 solution.
What is the quantity in grams of formic acid and sodium : what is the quantity in grams of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of .75 M and a sodium formate concentration of .75 M?
What is the percentage of snf2 in the toothpaste sample : Based upon 3 SnF2 (ag) + 2 K3PO4 (aq)> Sn3(PO4)s (s) + 6 KF (aq), a 10.000 gram sample of toothpaste containing stannous fluoride gives a 0.145 gram precipitate of stannous phosphate. What is the percentage of SnF2 in the toothpaste sample?

Reviews

Write a Review

Chemistry Questions & Answers

  How many grams of potassium permanganate are needed

How many grams of potassium permanganate are needed to decolorize 1g of 2-pentane in basic solution?

  Calculate molarity of a pottassium chloride solution

Calculate molarity of a KCl solution prepared by dissolving 0.525 moles of Kcl in 250. mL of water.

  Explain a laboratory method of preparing oxygen gas involves

A laboratory method of preparing oxygen gas involves decomposition of solid potassium chlorate. The products of the reaction are solid potassium chloride and oxygen gas.

  What mass of solid sodium formate must be added

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.

  What is the vapor pressure of a solution

At 25 ºC, the vapor pressure of water is 23.8 torr. What is the vapor pressure of a solution prepared by dissolving 97.0 g of C6H12O6 (a nonvolatile solute) in 170 g of water.

  State polyethylene is a polymer consisting of only carbon

Polyethylene is a polymer consisting of only carbon and hydrogen. If 2.300 g of the polymer is burned in oxygen it produces

  What is the final volume of neon gas

What is the final volume of 845 mL of neon gas at 202°C if the gas is cooled to 86.0°C?

  State the equilibrium constant kp

The equilibrium constant, Kp, for the following reaction is 0.497 at 500 K: PCl5(g) PCl3(g) + Cl2(g) Calculate the equilibrium partial pressures of all species when PCl5(g)

  Calculate the molarity of the sodium hydroxide

The concentration fo certain sodium hydroxide solution was determined phthalate(abbreviated as KHP). KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol.

  Which student measures the larger density

Two students measure the density of gold. One works with a 100-g bar of pure gold. The other works with a 200-g bar of pure gold. Which student measures the larger density.

  What was the percent yield for this reaction

A reaction between methane and hydrogen sulfide to produce carbon disulfide and hydrogen gas was carried out. CH4 (g) + 2 H2S(g) → CS2 (g) + 4 H2 (g)

  What is the freezing point of a solution

What is the freezing point of a solution of ethylene glycol, a nonelectrolyte, that contains 81.0 g of (CH2OH)2 dissolved in 505 g of water?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd