12.0 g NaHSO4 is dissolved in water to make a 2.00 L solution.
What is the molarity of the M

0.05M or 0.05moldm⁻³

Explanation:

Mass of NaHSO₄  = 12g

Volume of water  = 2L

Unknown:

Molarity of the solution  = ?

Solution:

The molarity of a solution is the amount of moles of solute dissolved in a given volume of solvent.

Mathematically;

                Molarity  =

   Let us find the number of moles of NaHSO₄;

            Number of moles  =

                molar mass of NaHSO₄ = 23 + 1 + 32 + 4(16) = 120g/mol

          Number of moles of NaHSO₄ =  = 0.1mole

Now;

            Molarity  =   = 0.05M or 0.05moldm⁻³

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in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.