In a campfire, carbon from wood reacts with oxygen in a combustion reaction. if you’ve ever started a campfire, you know you must begin by lighting small pieces of wood (called kindling) instead of logs. likewise, as this video shows, iron filings burn in the presence of air to make iron oxide. why do iron filings burn while a heavy iron pipe does not? why do twigs ignite better than logs? give your answer in terms of atoms.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

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.

What is the vapor pressure of a solution with a benzene to octane?