Which element is the most reactive out of the list below? A. nickel B. iron C. helium D. chlorine

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)

What are the two major rules associated with polarity

What is the molecular formula of ferrous nitrate and ferric nitrate