A sample that is 60.7 percent chloride by mass is dissolved in water and treated with an excess of AgNO3. If the mass of the AgCl precipitate is 1.125 g, what was the mass of the original sample?

It shows that the experiment is designed properly.

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

B. nuclear reactions could first occur.

I’m not sure about this question