What period is F (fluorine) in?

A) 17

B) 2

C) 7a

D) 7b

How does the size of the sun compare to the size of earth

The three dimensional structure of dna was determined by two scientist named

The following list contains some common polyatomic ions. Using the charge on these ions and the idea of valence, predict the formulas for the following.

What is technological design

What is solid formation?

How many grams of oxygen are formed when 8.20 moles of KOH are formed? 4 KO (s) + 2 H2O (l) → 4 KOH (s) + O2 (g)

It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!

When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of an aluminum chloride, AlCl3, solution.

What are the advantages of using solar energy

Which of the following has the highest critical temperature? H2 N2 NH3 H2O