Carbon is a synthetic element and is not normally found in nature.

True or False

How is ozone formed in the upper atmosphere?

What is the chemical formula for ammonium carbonate? (NH4) 2CO3 (NH4) HCO3 NH4 (CO3) 2 NH4 (CO3)

Cloudy nights can be warmer than clear nights because clouds trap heat

Calculate the molarity of a solution prepared by dissolving 11.5 g naoh in enough water to make 1.5 l of solution.

Why do electrons enter the 4s orbital before entering the 3d orbital? O A. because the 3d orbital is at a lower energy level OB. because both the 4s and 3d orbitals are at the same energy level O c.

How many molecules are in 237g (about a cup of water)

How do elements change as you move to the right along a row in the periodic table? The atomic number decreases. The electronegativity decreases. The average atomic mass increases. The number of valence electrons decreases.

Is newton statement a law or a theory

Either aluminum or zinc will replace silver ion in silver nitrate to give silver metal and aluminum nitrate or silver metal and zinc nitrate

What is the basic unit of energy?