Society & Culture1 min ago
Science
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Is Nucelophilic addition and Nucelophilic substitution reaction the same?! If not what is nucleophilic addition?!
How old is the Earth?
If you have a consumer unit with circuit breakers, do you still have to use a shaving socket for shaving, or can you just use a European adaptor and a standard outlet?
just wondering if everyone has the ability to learn maths
I live in Brighton, and if I look directly out to sea, which would be slightly South West, there is a bright star a little 'to the right'. What is it? thanks.
The size of the observable universe is bounded by the distance that light has had time to travel to us. An observer in the Andromeda Galaxy would have a slightly different observable universe to ours...
Can anyone tell me what chemicals i need to make an aromatherapy diffuser liquid apart from essential oils? i live in the UK so need to be able to buy it here. Thanks Guys. Willow.:o)
I'm conducting an experiment to find out which antacids are the most effective. Before I start, I need to know what acids to use. Which acids are most similar to stomach acids?
planning to put down new istallation but is it a good idea to leave the old stuff down and will it keep in more heat my home was built in the sixties and has the original stuff also any ideas on...
How is heat evolved during exothermic chemical reactiions?
What is the name given to scientists who chase Tornadoes/Storms? I don't think it's meteorologists.. any ideas? Thanks.
I recently saw individual radiator heaters for sale. The basic system lets you fit a thermostat controlled mains heating element into the bottom of a radfiator, you then fill a rad with water and and...
whats the difference between a hot and a cold start?
many thanks
I was driving tonight about 7pm and thought that the fullmoon looked larger than normal. It wasn't that high up in the sky so i wondered if it was,an atmospheric effect. Can anyone who knows about...
i'm doing AS chemistry btu last lesson teacher was off and so was given the work with homework to do for next lesson but i have no idea what i'm doing i know the meaning of them but i don't know how...
I am told that the force of gravity is caused by the warping of space/time by mass. This seems to be fundamentally different from the other 3 forces which are due to exchange of particles such as...
Hey. I carried out an experiement on some wire to find the breaking stress. The result is that the wire is 0.28mm thick, and the force applied until it snapped is 1501.11grams. I know that stress =...
Question 1: I have a UK 6 digit meter showing consumption in cubic feet. Does anybody know what the fist 4 digits show - is it 100's of cubic feet, or single units - or some other? Question 2:...
what are the consequences growing vegetables in contaminated land?
trying to help my daughter with her homework, and for most of the simultaneous equations she's on top of it, but this one's a stinker: Solve for x and y: x2+xy-4y2=2 (that's x squared and 4y squared)...