Calculate the ph of a solution that is made by mixing 50.0 ml of 0.14 m acetic acid and 50.0 ml of 0.21 m sodium acetate. express your answer to two decimal places.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

The identities of substances are the same before and after which type of change