A gas has a volume of 50.0 ml and is heated until it reaches a temperature of 500K and a volume of 0.50 L, What was its original temperature?

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

Describe the forces both attractive and repulsive that occur as two atoms move closer together.