14. Calculate the percent nitrogen in Cu(NO3)2. Round your answer to the closest whole number. *Don't Forget Your Units!! (1 Point) Enter your answer 15.How many of the following chemical formulas represent Empirical Formulas?
H20
P5010
H2SO4
Na20
C3H8 (1 Point)

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Light waves travel than sound waves.