Three bulbs are connected by tubing, and the tubing is evacuated. the volume of the tubing is 37.0 ml. the first bulb has a volume of 89.0 ml and contains 7.92 atm of argon, the second bulb has a volume of 250 ml and contains 1.94 atm of neon, and the third bulb has a volume of 38.0 ml and contains 3.42 atm of hydrogen. if the stopcocks (valves) that isolate all three bulbs are opened, what is the final pressure of the whole system in atm?

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.

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?