1. if all the variables, other than nucleophilicity, are being held constant, why are different masses of sodium bromide and sodium chloride used? 2. prepare if/then statements on the possible outcomes of the experiment. for example, if sodium bromide is more nucleophilic, be sure to include specific results you would expect to see. in other words, how will that be reflected in the data? 3. draw the setup needed for a reflux. should the condenser by capped? 4. what property determines which layer is on top or bottom in an extraction? what are the values for 1-butanol, 1-bromobutane and 1-chlorobutane? will the organic layer be on top or bottom? if you are not sure, how can you verify which layer is organic? 5. why will the gc syringe be washed with pentane before it is used with the sample?

the answer is the first option

explanation:

just googled it m8. not that hard

lol

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.