Use noble gas abbreviations to write the electron configuration for each of the following: a) Ra
b) Sm

An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms

What is the percentage composition of carbon in the compound ch4

The fact that the total amount of energy in a system remains constant is a(n)