An element belongs to group 9. what common name might be used to describe the group to which this element belongs?

Water birds are the only kind of bird that eat fish. true or false

Which of the following shows the balanced equation for Ca + 02 - CaO? Ca + O2 - CaO 2Ca + O2 - 2CaO 4Ca + 202 - 2CaO 2Ca + 202 - 2CaO

How does water re-stabilize the planet?

What are the energy transformations in a solar calculator?

What type of organism converts nitrogen into a usable form for plants? A) bacteria B) earthworms C) fungus D) mold

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