Which increases the rate of a chemical reaction?
a. a catalyst
b. a higher volume
c. a lower pressure
d. a lower temperature user: how does a catalyst appear in a chemical equation?
a. it does not usually appear in an equation.
b. it only appears on the product side of an equation.
c. it only appears on the reactant side of an equation.
d. it appears on both the reactant and product sides of an equation.

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.