Which of the following best describes scientific knowledge 1).durable 2).absolute and never changing 3).frequently varies

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

In a copper wire, a temperature increase is the result of which of the following

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat