Which of the following are pure elements A. Oxegen
B. Hydrogen
C. Sodium chloride
D. Helium
E. Carbon dioxide
F. Water

How does the motion of particles in a gas change as the gas cools

Complete each row of the table below by filling in the missing prefix or missing exponent.

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.