4. a cylinder with a piston originally contains 5.0 l of he gas at a temperature of
310 k. when the gas is cooled the piston moves and the new volume is 2.4 l.
what is the final temperature of the gas assuming that pressure and the number of
moles of he remains constant?

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

Answer///an early form of the atomic theory; dalton atomic theory;