Compounds like rm ccl2f2 are known as chlorofluorocarbons

Reference no: EM13345039

Compounds like {rm CCl_2F_2} are known as chlorofluorocarbons, or {rm 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 {rm CCl_2F_2} is 289 {rm J}/{rm g}. What mass of this substance must evaporate in order to freeze 180 {rm g} of water initially at 20^circ {rm C}? (The heat of fusion of water is 334 {rm J/g}; the specific heat of water is 4.18 {rm J/g cdot K}.)

Reference no: EM13345039

Questions Cloud

A solid shaft l 19 m long is supported between two bearings : a solid shaft l 1.9 m long is supported between two bearings. the shaft rotates at 250 rpm. a 20 degree involute gear

Calculate the concentrations of all species in a 162 m : calculate the concentrations of all species in a 1.62 m na2so3 sodium sulfite solution. the ionization constants for

At equilibrium the flask containing the reacting mixture : at equilibrium the flask containing the reacting mixturenis 4 cog --gt nico4gcontains 232 torr co 1240 torr nico4 and

Suppose that data are stored on a 14-mbyte floppy : suppose that data are stored on a 1.4-mbyte floppy diskettes that weight 30 g each. suppose that an airliner carries

Compounds like rm ccl2f2 are known as chlorofluorocarbons : compounds like rm ccl2f2 are known as chlorofluorocarbons or rm cfcs. these compounds were once widely used as

Calculate the mass of coal in grams and metric tons that : a coal-burning power plant generates electrical power at a rate of 500 megawatts that is 500 x 10 to the 6th power pr

Under standard conditions what is the maximum electrical : a voltaic cell is based on the reactionsns i2 s --gt sn2 aq 2i- aq. under standard conditions what is the maximum

An electronic instrument is to be isolated from a panel : an electronic instrument is to be isolated from a panel that vibrates at frequencies ranging from 25 hz to 35 hz. it is

How many moles of hno3 are present in 348 ml of a 220 m : how many moles of hno3 are present in 34.8 ml of a 2.20 m solution of nitric

User Account

All Pages