Expressing the concentration of a solution:- Before we start with the concentration, we should understand the calculation of moles. A number of moles =mass of solute /Molecular mass of the substance. Example:...
Integer (Z)= ...-3,-2,-1,0,1,2 3,4... A.If you add two integers you will get ineger Like 4 + 5 = 9 Integer+integer=integer So , you can say integers are closed under addition....