Look at the reaction below and state which direction the reaction would shift: - You remove mercury(II) oxide, HgO, from the reaction.

2HgO (s) <=> 2Hg (l) + O2 (g)

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

One similarity and one difference between an element and a mixture of elements