a volume of 25.0 mL of a 0.20M unknown weak acid is titrated with 0.1M NaOH After 15.0mL base addition. The pH is measured at 2.92. Calculate the Ka of the unknown acid.

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

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.

a electronegativity decreases beacuse the size of nucleus is bigger.