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!
Above: Clouds containing many aerosols (left) also contain many water droplets. Such clouds reflect light well. Clouds containing fewer aerosols (right) tend to harbor larger water droplets; they transmit more solar energy to the planet below. [more]