As with any combustion reaction, the products of combusting a hydrocarbon fuel (cxhy) with oxygen (o2) are carbon dioxide (co2) and water (h2o). a mass of 16.55 g for an unknown fuel was combusted in a reaction vessel containing an unknown amount of oxygen. at the end of the reaction, there still remained 16.48 g of the fuel as well as 0.1144 g of water and 0.2096 g of carbon dioxide. the oxygen was completely consumed during the reaction. how many molecules of oxygen gas were initially present in the reaction vessel?

Two things that biomedical has invented or innovated

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.