Chemistry, 28.09.2021 02:00, jaylynomalley
The earth's ozone layer is under attack in part by chlorine released when ultraviolet radiation breaks apart certain fluorocarbons. Consider three fluorocarbons known as CFC-11 (CCl3F), CFC-12 (CCL2F2), and HCFC-22 (CHF2Cl). (a) Calculate the percentage by weight of chlorine in each of these fluorocarbons. (b) If each kilogram of CFC-11 could be replaced by 1 kg of HCFC-22, by what percentage would the mass of chlorine emissions be reduced?
Answers: 2
Chemistry, 22.06.2019 00:10, mpchop
According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram
Answers: 3
Chemistry, 22.06.2019 17:00, emma3216
In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added
Answers: 1
Chemistry, 23.06.2019 00:30, kylee65
What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community
Answers: 2
The earth's ozone layer is under attack in part by chlorine released when ultraviolet radiation brea...
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