Explain what mass of this substance must evaporate to freeze

Assignment Help Chemistry
Reference no: EM13214558

Compounds like CCl2F2 are known as chlorofluorocarbons, or CFCs. These compounds were once widely used as refrigerants but are now being replaced by compounds that are believed to be less harmful to the environment. The heat of vaporization of CCl2F2 is 289 J/g. What mass of this substance must evaporate to freeze 165 g of water initially at 15°C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g-K.)

Reference no: EM13214558

Questions Cloud

Compute the molar mass of the element : Calculate the molar mass (g/mol) of the element to three significant figures.
Compute the amount of heat required to melt : Calculate the amount of heat (in J) required to melt the sample. Use the following data: Tp = 44oC; C = 94 JoC-1 mol-1; ?Hfusion = 2.5 kJ/mol.
Explain the molar concentration of methanol in the mixture : What is the molar concentration of methanol in the mixture? Give answer in M, 2 significant digits, do not write down the units.
State octane ratings are assigned to gasoline mixtures : Octane ratings are assigned to gasoline mixtures based on their ability to prevent knocking relative to isooctane. Estimate the energy released during the combustion of 1.00 mol of pure isooctane.
Explain what mass of this substance must evaporate to freeze : The heat of vaporization of CCl2F2 is 289 J/g. What mass of this substance must evaporate to freeze 165 g of water initially at 15°C? (The heat of fusion of water is 334 J/g; the specific heat of water is 4.18 J/g-K.)
Explain how many grams of water can be cooled : For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 40.°C to 19°C
State what is stands for molality solution of hcl : What is the molarity of a 15.5 m (m stands for molality) solution of HCl if the density of the solution is 1.33 g/cm^3.
Explain a mixture of acetic acid and acetate ion : This buffer is to be prepared by mixing 25.0 mL of 0.1 M HCl with the correct mass of solid sodium acetate. You will determine the mass of solid sodium acetate needed.
Calculate the cash dividend to be paid in 2008 : Calculate the cash dividend to be paid in 2008 under each of the three proposals-Proposals for distributing of 2008 profits Maintain the dividend payout ration of 2007

Reviews

Write a Review

Chemistry Questions & Answers

  What volume will the gas occupy

A gas has a volume of 590 mL at a temperature of -55.0C. What volume will the gas occupy at 30.0C.

  How many moles of aluminum will react with 0.80 grams o2

In the reaction of aluminum metal and oxygen gas to make aluminum oxide, how many moles of aluminum will react with 0.80 grams O2?

  Explain the pressure in the container falls

Two molecules of 1,3-butadiene (C4H6) react to form 1,5-cyclooctadiene (C8H12). As the Reaction proceeds, the pressure in the container falls, because two gas molecules are consumed to produce one product molecule.

  Some alloys of early also late transition metals

Some alloys of early and late transition metals (e.g., ZrPt3) have much higher enthalpies of vaporization (per metal atom) than either of the pure metals

  State a sealed container holding

A sealed container holding 0.0255L of an ideal gas at 0.983 atm and 71C is placed into a refrigerator and cooled to 37C with no change in volume

  Calculate the ph of each of the following strong acid

Calculate the pH of each of the following strong acid solutions: 5.00 mL of 1.00 M HCl diluted to 0.500 L d) a mixture formed by adding 50.0 mL of 0.020 M HCL to 150 mL of 0.010 M HI

  State what is the total mass of alcl3

What is the total mass of AlCl3 in this sample? b. How many moles of AlCl3 are in this sample?

  Explain find the mole fraction of benzene in the vapor

When the temperature is 100 °C, find the mole fraction of benzene in the vapor and liquid phases and the ratio of total moles in vapor to total moles in liquid.

  Determine the limiting reactant

Determine the limiting reactant -reaction mixture initially contains no products

  Explain how does insulin promote glycogen synthesis

How does insulin promote glycogen synthesis in the liver? By binding to glycogen phosphorylase. By activating glycogen phosphorylase. By inhibiting glycogen synthase.

  What is the number of moles of air

At 0.0 degrees C, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 685 mmHg, what is the number of moles of air?

  Calculate the ph of the solution

Calculate the pH of the solution that results upon mixing 20.0 mL of a 0.200 M HCl with 25 mL of.

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