State the law of moment of force.

Explanation:

when in equilibrium condition the total sum of anti clockwise moment is equal to the sum of clock wise moment

Newton's First Law of Motion states that in order for the motion of an object to change, a force must act upon it. This is a concept generally called inertia.

Newton's Second Law of Motion defines the relationship between acceleration, force, and mass.

Newton's Third Law of Motion states that any time a force acts from one object to another, there is an equal force acting back on the original object. If you pull on a rope, therefore, the rope is pulling back on you as well.

Explanation:

c is the answer because when something is left after something evaporates that shows the chemical change.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.