When a gas is heated to 130 °C, its volume changes from 250 mL to 375 mL. What was the temperature of the gas before it was heated?

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.

The disturbance is only parallel to the motion of the wave.

The correct answer should be a.