Match the element properties with their descriptions. part a1. malleability 2. viscosity 3. density 4. texture 5. solubility 6. luster 7. ductility part ba. degree of surface smoothness b. the ability to dissolve in another substance c. ability to be pounded into shapes d. how "shiny" a material is e. the mass of a sample divided by its volume f. how well a substance flows at a given temperature g. ability to be pulled into a wire

The number at the end of an isotope’s name is the number.

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 .

How does the value of the equilibrium constant show that a reaction reaches equilibrium very quickly? (a) the equilibrium constant is large. (b) the equilibrium constant is small. (c) the equilibrium constant is zero. (d) the value of the equilibrium constant does not show how quickly a reaction comes to equilibrium.