25 cm^3 of 0.010 moldm^-3 chloroethanoic acid (CH2CICOOH) is added to a conical task. Which of the following answers gives the correct pH value for the solution
(Ka (CH2CICOOH) = 1.3 x 10^-3 moldm^-3)?

a) 2.84
b) 4.89
c) 6.28
d) 2.44

Dwayne filled a small balloon with air at 298.5 k. he put the balloon into a bucket of water, and the water level in the bucket increased by 0.54 liter. if dwayne puts the balloon into a bucket of ice water at 273.15 k and waits for the air inside the balloon come to the same temperature, what will the volume of the balloon be? assume the pressure inside the balloon doesn’t change. type the correct answer in the box. express your answer to the correct number of significant figures. the volume of the balloon at 273.15 k is liters.

Write a paragraph at least 10 sentences explaining how rocks are used today in society

In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids