Using the Henderson-Hasselbalch equation, calculate the pH of a buffer solution that is 0.497 M in HCO3- and 0.249 M in CO32-.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.