The density of a gaseous compound of phosphorous is 0.943 g/L at 484 K when its pressure is 732 Torr. What is the molar mass of the compound?
Answer in units of g/mol.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

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.

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.