Using the graph below, determine the pKa, Ka, and concentration of the acid if 25 mL was titrated with 0.50 M NaOH. Show your work.

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Which formula can be used to calculate the molar mass of hydrogen peroxide

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?