The universe is made up of billions of galaxies, and each galaxy is made up of billions of stars. Is it possible to see any of these
galaxies with the naked eye?
A.
Yes, some of the galaxies can be seen with the use of a microscope.
B. No; it is not possible to see any of the galaxies with only the naked eye.
C.
Yes; galaxies that are near to the Earth can be seen as fuzzy spots.
galaxies are invisible and therefore impossible to see.

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

In which situation can a mixture always be called a solution