There are three naturally occurring isotopes of nitrogen as follows:

nitrogen-14 with a 95% abundance

nitrogen-15 with a 3% abundance

nitrogen-16 with 2% abundance

part a (3points): explain at least three things that the isotopes of nitrogen have in
common.

part b (2 points): explain at least two differences between isotopes of nitrogen.

part c (2 points): which isotope of nitrogen is going to have the greatest affect on
the average atomic mass of nitrogen? give supporting evidence for your answer.

part d (1 point): explain why nitrogen-14 and oxygen-14 are not isotopes of each
other.

See explanation

Explanation:

a) Isotopes are variants of one chemical element which (such as Nitrogen in this case). Those variants differ in neutron number and nucleon number.

This is also the reason why they have different masses. Isotopes are different physically to their original atoms.

b) All isotopes of a given element have the same number of protons and electrons. All the isotopes have the same atomic number as the original element. Isotopes are almost the same chemically.

c) The 14 in the name of Nitrogen-14, means  it has a mass of 14u ( while Nitrogen 15 has a mass of 15 u). Nitrogen-14 will have the greatest affect on the average atomic mass, this because of the 95% abundance.

Nitrogen has an average atomic mass of 14.0067 u. This is the closest to 14, what shows nitrogen-14 has the biggest affect.

The average atomic mass is calculated as following: 14*0.95 +15*0.03 + 16*0.02 =14.07 u

d) Both are isotopes, but of another element. They both have a mass of 14 u. Bu they have a different number of neutrons: Oxygen-14 has 6 neutrons and 8 protons while Nitrogen-14 has 7 neutrons and 7 protons. This means oxygen-14 and nitrogen-14 are not isotopes, since isotopes do have the same number of neutrons.

true

explanation:

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation: