Suppose a movie director is filming on a set that should look like a hot desert. He wants the scene to appear warmer, so that the red and yellow tones are the most apparent. What color filters should he use? What color will the blue sky appear when he uses those filters, and why

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.

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?

What four properties do all waves have in common