The heat of vaporization of ccl2f2 is 289 j/g

Assignment Help Chemistry
Reference no: EM13687209

Question- CCl2F2 is considered to be environmentally safe and is used as a refrigerant. The heat of vaporization of CCl2F2 is 289 J/g.

1) What mass of this substance must evaporate in order to freeze 2 moles of water initially at 20 °C? The heat of fusion of water is 334 J/g and the specific heat of water is 4.18 J/g-K.

Please explain solution of the above question

Reference no: EM13687209

Questions Cloud

Calculate the energy separations in joules : Problem- Calculate the energy separations in joules between the levels of an electron in a box of length 1 nm. Comment on your result.
Shielded valence electrons from nuclear charge : If core electrons completely shielded valence electrons from nuclear charge (i.e., if each core electron reduced nuclear charge by 1 unit) and if valence electrons did not shield one another from nuclear charge at all,
Calculate the ph for each of the following cases : Question- Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.210 M HClO(aq) with 0.210 M KOH(aq). The ionization constant is 4.0× 10-8.
The following ions contain the same number of electrons : Question- The following ions contain the same number of electrons. Rank them in order of decreasing ionic radii.Ba2+, I-,Cs+,Sb3-,Te2-, La3+
The heat of vaporization of ccl2f2 is 289 j/g : Question- CCl2F2 is considered to be environmentally safe and is used as a refrigerant. The heat of vaporization of CCl2F2 is 289 J/g.
What is the ph of a buffer of propionic acid : Question- What is the pH of a buffer that contains 0.15 mol of propionic acid and 0.10 mol of sodium propionate in 1.20 L? No word count please provide correct answer
Calculate the zero point energy of a vibrating nitrogen : Question- Calculate the zero point energy of a vibrating nitrogen molecule, assuming that its force constant is 2294 N/m
Describe the similarities and differences between dna : Question- Describe the similarities and differences between DNA gel electrophoresis and SDS-PAGE. Provide at least 3 differences.
Calculate the change in internal energy system : Question- Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.657kJ of heat. It shrinks on cooling, and the atmosphere does 382J of work on the balloon.

Reviews

Write a Review

Chemistry Questions & Answers

  A 75 ml solution of 0030 m caoh2 is titrated with 0035 m

a 75 ml solution of 0.030 m caoh2 is titrated with 0.035 m hcl. calculate the ph of the mixture after 60 ml of hcl have

  Explain the true rate constant for a reaction

The true rate constant for a reaction is just that, a constant( at the constant temperature). Would your calculated value for k be higher than, lower than, or equal to the real value of k if 5 wt% bleach was unknowingly substituted with 8wt% bleac..

  Explain an apparatus by which azeotrope formation can be use

Describe an apparatus by which azeotrope formation can be used to drive the equilibrium toward the products, thus maximizing the yield.

  Compute the concentration of acid or base

Calculate the concentration of acid(or base) remaining in solution when 5.39mL of 6.93M HNO3 is added to 9.37mL of 8.37M NaOH. Note the final volume is the sum of two added volumes. which of the following statement is true for the solution after m..

  How many moles of co(nh2)2 are present

How many moles of CO(NH2)2 are present in 145 g of water, if the freezing point of the solu- tion is -4.02?C? kf (water) = 1.86 K · kg/mol.

  State the molecular formula for the compound

Write the molecular formula for the compound that exhibits a molecular ion at M+ = 96.0580. Assume that C, H, N, and O might be present, and use the exact masses from your text.

  Define the difference in experimental procedures

If the antacid for analysis is known to be Phillips' Milk of Magnesia, the solution does not need to be heated, but if the sample is Mylanta, the solution must be heated. Explain the difference in experimental procedures

  Explain what fraction of the product would be lost

MgNH4PO4 *6H2O has a solubility of 0.023 g/100mL in water. Suppose a 5.02 g sample were washed with 20mL of water. What fraction of the product would be lost.

  Benzoic acid is a white crystalline powder used as a

benzoic acid is a white crystalline powder used as a foodpreservative. the compound contains 5.0 hydrogen 26.2 oxygen

  Depict a diagram of the electrochemical cell

(a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell. (c) What is the value of the equilibrium constant for the reaction occurring in this cell

  Explain the effectiveness of commercial liquid bleaches

Compose a judgment as to the effectiveness of commercial liquid bleaches by noting the ingredients on the labels. Explain

  Compute the mass of the particle

Assuming this particle is a single crystal, how many unit cells are lined up across the diameter of the particle? d. Calculate the mass of the particle. e. Approximately how many atoms does this particle contain?

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