Which of these statements about neutrons is true?
a. neutrons travel around the nucleus of an atom.
b. a neutron has no charge.
c. neutrons have less mass than electrons.
d. the number of neutrons in an atom always equals the number of electrons.

Which best describes why nh4+ can form an ionic bond with ci-?

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?

Which of these is an intensive property of a substance