130cm cube of a gas at 20 degree C exerts a pressure of 750mm Hg. calculate its pressure if its volume is increased to 150cm cube at 35 degree C.​

2b2t

explanation:

2b2t

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.

4d^55s^1 ( third choice)