a student has a rectangular block. It is 2cm wide and 3cm tall and 25cm long. It has a mass of 600 grams first calculate the volume of the box. Then use that answer to determine the density of the block.

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air