The answer is D) a neutron.
When we say an atom's mass is, like 5 atomic mass units actually we are saying that the total number of the neutrons and protons in its nucleus is 5.
The mass of a neutron and a proton is each one atomic mass unit.
Mass of a neutron is approximately 1 atomic mass unit.
Newton’s third law, because a person(a) is acting upon the ball(b) by dribbling the ball on the floor
With a pH of five, it would mean that this substance is a weak acid one would also it expect it would be sour.
Your answer is going to be b
