A student is attempting to make up 500.0 mL of a 0.492 M solution of CuSO4 from a stock solution which has a molarity of 1.00 M. How many mL of the stock solution will they need to add to a 500.0 mL volumetric flask to make up the 0.492 M
solution?

What are the options? i can you if you give them.

C) the increase in atmospheric pressure pushes the walls of the balloon outward thus making it  is the answer.hope i you.

Answerthe same as;

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.