chemistry help 15.50

Science

Part A

Calculate the [H3O+] of 0.135 M H2CO3 solution.

Express your answer using two significant figures.

Part B

Calculate the pH of 0.135 M H2CO3 solution.

Express your answer to two decimal places.

Part C

Calculate the [H3O+] of 0.145 M H3C6H5O7 solution.

Express your answer using two significant figures.