WILL GIVE BRAINLIEST AND TOP RATINGS A gas sample originally at −39°C is heated to standard
temperature (0°C), at which point its pressure is measured
to be 808 mmHg. What was the original pressure of the gas?

one state would change   like louisiana to texas. thats a change

explanation:

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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.