Engineering, 01.11.2019 04:31 hargunk329
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 (cci3f), cfc-12 (cci2f2), and hcfc-22(chf2ci). (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
Another question on Engineering
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 18:10
Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?
Answers: 3
Engineering, 04.07.2019 18:20
Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:20
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
Answers: 3
You know the right answer?
The earth's ozone layer is under attack in part by chlorine released when ultraviolet radiation brea...
Questions
Computers and Technology, 29.10.2019 22:31
