Tarnished silver can be cleaned with toothpaste. give reason

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 transitions between a liquid and a solid called? identify which way they are transitioning

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?