One unit of methane gas (CH4), plus two units of oxygen gas (O2) produce one unit of carbon dioxide gas (CO2) and two units of liquid water.

Write an chemical equation for the reaction.

answer; (arch); good luck

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

the maxium height is 34m/s