Companies may draw water from nearby sources, including the ocean, to cool industrial equipment. After the water has passed through or over their equipment, it is returned to its source. The heated water contains less oxygen than cool water. What happens when companies expel heated water into the ocean?

Compare and contrast physical changes with chemical changes.

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.

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-