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Question:

relationship between rating and capacity of fire extinguishers?

what should be the capacity of a extinguisher having a rating of 21A

Answer:

Generally all maintenance issues are the responsibility of the landlord. Do not test a smoke detector by lighting a match or smoking, use the test button on the device, the test button is the factory recommended test procedure and UL approved.
This type of molecule will stabilize cation formation upon bromide dissociation because of 3 possible resonance structures with the phenyl group. Considering that the solvent can solvate the leaving group pretty well and that you are using a pretty strong base, I will predict that the major product will the styrene (PhCHCH2). This reaction will follow an E1 mechanism.
nothing wrong with sitting and hanging outside.i do it all the time and im white.just cause you say you have a few black friends dont mean your not racist. i love how racist people say,im not racist i have a black friend. lmao. funny. you rcist people crack me up.ruining the world by the day with your moronic logic and assumptions.
Double check that the battery you used indeed is a fresh one. Light a match near the alarm to see if you can set it off. If it does not work, than ask your landlord to replace it. I have been a landlord in the past and did the replacing when necessary, no questions asked.

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