A student wants to burn a 1.25 mL sample of ethanol (C2H5OH, d = 0.789 g/mL) in a jar containing dry air. The air in the jar is at standard atmospheric pressure and a temperature of 22 °C. Use this information and the composition of dry air in the previous problem to answer the following questions. a)Write a balanced chemical reaction for the combustion of ethanol. b)Calculate the moles of oxygen needed to completely combust the ethanol. c)Calculate the partial pressure of oxygen in the jar. d)Calculate the volume of oxygen (in L) needed in the jar.

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".