When ice melts, the volume of water is smaller than that of the ice. How does the mass of the water compare to the mass of the ice? Why do you not observe a change in mass?

If a || b and e || f, what is the value of y ?

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

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)