Which compound has the highest boiling point? explain your reasoning. ch4 or ch3ch3

question 28 options:

ch3ch3. it has a greater mass and number of electrons which causes greater dispersion forces and a higher boiling point.

ch4 has stronger dispersion forces compared to ch3ch3 which leads to a higher boiling point.

ch3ch3. it is flatter which causes greater dispersion forces than ch4.

ch4 has a lower mass compared to ch3ch3 which leads to a higher boiling point.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

What is a costume plot? why is it important to a film or theater production?