Elements and compounds are more similar to each other than they are to mixtures because:

elements and compounds cannot be reduced to simpler substances by physical or mechanical means, but mixtures can

elements and compounds can only be liquids or solids, but mixtures can be solids, liquids or gases

elements and compounds can be homogeneous or heterogeneous, but mixtures can only be heterogeneous

elements and compounds do not have fixed melting points, but mixtures do

Find the number of moles of argon in 364g of argon.

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.

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .