1. draw a rough sketch of the energy profile for each of the following cases:

a. delta e = +10 kj/mol, ea = 25 kj / mol
b. delta e = -10 kj/mol, ea = 50 kj/mol
c. delta e = -50 kj/mol, ea = 50 kj/mol

which of the reactions will have the greatest rate at 298 k? assume the frequency factor a is the same for all three reactions.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

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.

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together