What is the meaning of the area under the line?

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?