using acetonitrile (ch3cn) and co2 as your only sources of carbons, identify how you could prepare the following compounds:

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.