What is the volume of 0.200 mol of an ideal gas at 200. kPa and 400. K? Use P V equals n R T. and R equals 8.314 StartFraction L times kilopascals over moles time K EndFraction..

3.3256 Liters

See the image I have shared to you above

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.