66) b) How much hydrazine, in grams, is needed to produce 10.0 mol of nitrogen gas?
SHOW WORK

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.