A student dissolved 0.620 mol of copper (II) chloride in water to make 0.250 L of solution. The concentration of the copper (II) chloride is : *
a. 3.35 mol/L
b. 3.48 mol/L
c. 2.35 mol/L
d. 2.48 mol/L

Variables,control,conclusion and finally scientific theory

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