14. how is the number of neutrons in the nucleus of an atom calculated?
add the number of electrons and protons together.
subtract the number of electrons from the number of protons.
subtract the number of protons from the mass number.
add the mass number to the number of electrons.

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

What state of matter is ice a. liquid b. element c. solid d. gas