You have 1.00 L of a solution with a pH of 2.0. What is the pH of the solution if 500 mL of water is added to it? a.) 2.18
b.) 2.67
c.) 1.5
d.) 2.5

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

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.

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c