A solution of ethanoic acid of concentration 0.01 mol dm-3 has a pH of 3.38. Calculate the

dissociation constant, Ka, of the acid

a) 2.67 × 10-4 mol dm-3

b) 1.76 × 10-4 mol dm-3

c) 1.76 × 10-5 mol dm-3

d) 1.67 × 10-5 mol dm-3​

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble