What does a negative change in entropy indicate? O A. The entropy of the system has increased.
O B. The system has become more random.
O C. The energy of the system has increased.
O D. The system has become more ordered.

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

How many atoms or molecules are there in a mole of a substance?

What type of context clue you understand the meaning of  quandary?