Interstellar space has an average temperature of about 10 k , and an average density of hydrogen atoms of about one hydrogen atom per cubic meter. calculate the mean free path of hydrogen atoms in interstellar space. use =100 pm as the diameter of a hydrogen atom.

What happens to energy in an open system?

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Identify and describe the three ways that mutations affect organisms.