7. while prospecting in the north woods, joe found a gold nugget which had a density of 19.2 g/cm3. joe dropped the gold into water in a graduated cylinder, the water level increased by 15.0 ml. how many grams of gold did he have? (ans: 288 g)

Idon’t understand this page, can someone ?

Which of these conditions most likely produces an unstable isotope?

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.