2. How many moles of copper are needed to react with sulfur to produce 0.25 moles of
copper(t) sulfide according to the following reaction:
2 Cu + S + Cu2S

Nonmetal halogen family atmoic mass 35

What is the relationship of air masses and the temperature of oceans?

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)