An element has two naturally occurring isotopes with atomic masses of 112.90 amu and 114.90 amu. the relative abundances of these isotopes are 4.29% and 95.71%, respectively. what is the average atomic mass of the element? a.22.78 amu b.113.9 amu c.114.8 amu d.227.8 amu

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.