*CHEMISTRY* *WILL GIVE BRAINEST*

If a gas is held at constant pressure and is heated, which of the following would occur?
O The gas expands proportionally to the increase in temperature.
O The gas contracts proportionally to the increase in temperature.
O The gas volume is a constant because pressure is constant.
O None of the above.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

Which characteristics can be used to differentiate star systems? check all that apply.