If the equation is balanced: The coefficient numbers in the equation show the number of molecules, formula units, or atoms of the species involved in.
A cloud is made up of liquid water droplets. A cloud forms when air is heated by the sun. As it rises, it slowly cools it reaches the saturation point and water condenses, forming a cloud. As long as the cloud and the air that its made of is warmer than the outside air around it, it floats!
Why do clouds float in the sky even though they have tons of water in them? Clouds are the visible part of a continuous cycle in which water evaporates into the air, condenses and returns to Earth mostly as rain. The cycle starts when the Sun warms the Earth, which in turn, warms pockets of moist air.