8 moles of oxygen occupies 50. mL. How many moles of oxygen would be present if the volume were 100. mL, assuming pressure and temperature remain constant?

Based on the equation and the information in the table, what is the enthalpy of the reaction?

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 4 phases of matter in order of increasing engery content?