# The freons are a class of compounds containing carbon, chlorine, and fluorine. while they have many valuable uses, they have been shown to be responsible for depletion of the ozone in the upper atmosphere. in 1991, two replacement compounds for freons went into production: hfc-134a () and hcfc-124 calculate the molar masses of these two compounds.

elianagilbert3p3hh63   ·   11.07.2019 11:30
10.07.2019 10:30
257 grams h2o i think
07.07.2019 19:30
Iread all the questions and answers, that person done a lot of work so go ahead and give them brainliest!
05.07.2019 14:00
Ithink 2 is the correct
06.09.2020 17:52

1) HFC-134a is 1,1,1,2-tetrafluoroethane, with molecular formula C₂H₂F₄.

M(C₂H₂F₄) = 2Ar(C) + 2Ar(H) + 4Ar(F) · g/mol.

M(C₂H₂F₄) = 2 · 12 + 2 · 1.01 + 4 · 19 · g/mol.

M(C₂H₂F₄) = 102.02 g/mol; molar mass of HFC-134a.

2) 1) HCFC-124 is 1-chloro-1,2,2,2-tetrafluoroethane, with molecular formula C₂HClF₄.

M(C₂HClF₄) = 2Ar(C) + Ar(H) + Ar(Cl) + 4Ar(F) · g/mol.

M(C₂HClF₄) = 2 · 12 + 1.01 + 35.45 + 4 · 19 · g/mol.

M(C₂HClF₄) = 136.46 g/mol; molar mass of HCFC-124.

### Other questions on the subject: Chemistry

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle i need : ( asap i go it never mind...
Chemistry
21.06.2019 16:00
The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?...
Chemistry
21.06.2019 20:30
If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3...
Chemistry
22.06.2019 21:50
The sum of the oxidation numbers in a neutral compound is always...
Chemistry
22.06.2019 23:30
What is calcium oxide+diphosphorus pentoxide--> calcium phosphate balanced...
Chemistry
23.06.2019 00:30
The bohr model of the atom explained why emission spectra are discrete. it could also be used to explain the photoelectric effect. which is a correct explanation of the photoelectr...
Chemistry
23.06.2019 02:00
What are the two basic types of satellites...
Chemistry
23.06.2019 06:30
Consider the heating curve of h2o and line segments a, b, and c. several changes are taking place at a, b, and c. all but one would be an appropriate description as e move through...
Chemistry
23.06.2019 06:30
Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosi...
Chemistry
23.06.2019 08:00