There would be about 1.67 x 10^25 oxygen atoms and about 3.34 x 10^25 hydrogen atoms.
The lower the frequncy the longer the wavelength the longer the wavelength whoch would probably give you more energy.
if im incorrect im truly sorry
The answer would be A. which says the emitter- base junction must be forward biased, and the collector- base junction must be reverse biased.
Answer: The molar mass of the unknown compound is 200 g/mol
Explanation:
Depression in freezing point is given by:

= Depression in freezing point
i= vant hoff factor = 1 (for molecular compound)
= freezing point constant = 
m= molality

Weight of solvent (benzene)= 0.250 kg
Molar mass of solute = M g/mol
Mass of solute = 26.7 g


Thus the molar mass of the unknown compound is 200 g/mol
An isotope is when a normal atom has too many neutrons and its weight has been offset.