Which of the following is a chemical property of iron. The melting point of iron is 1536 degrees Celsius.
The boiling point of iron is 3000 degrees Celsius.
Iron has a hardness of 4-5.
Iron rusts when exposed to water and oxygen.

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.

What is the measured amount of a product obtained from a chemical reaction?