Which one of the following is not formed when potassium hydrogen carbonate reacts with dilute hydrochloric acid? a. Potassium chloride
b. Water
c. Carbon monoxide
d. Carbon dioxide

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.