was Isaac Newton’s first contribution to the scientific community. Principia
The infinite series
The reflecting telescope
The refracting telescope

B"hf and f-"  is the correct answer took the test on edgenuity and got it right     

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.

A. is your answer.  hope this