Magnesium bromide is prepared in a laboratory using the reaction below. Typically, the magnesium bromide is recovered as a solid by heating away the remaining water, MgO(s) + 2 HBr(aq) - MgBr2(aq) + H2000
10 940 mole of HBr in solution is added to 16.5 grams of Mgo in a beaker and then is heated until dry, what are the expected contents of the beaker?
0 880 mole of MgBr2(8) and 0.060 mole of Mgo(s)
А
B
0.410 mole of MgBr2(s) and 0.060 mole of MgO(s)
0409 mole of MgBrz(s) and 0.531 mole of HBr(s)
D
0.409 mole of MgBrz(s) and 0.121 mole of HBr(s)

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.

answeridentity;