What is the symbol for Avogadro's number?
a. Α
b. M
c. mol
d. NA

Titania buys a bag of fertilizers at the store.it reads 30-15-10. how much phosphorous is in the fertilizer a. 30% b. 15% c. 10%

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

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.