The burning of certain fuels results in two products, carbon dioxide, and water. Carlos and Javier are each asked to draw a model of the gas mixture to show why carbon dioxide and water are different
substances. Carlos and Javier draw their models at different scales as shown below. Whose model is
drawn at a scale that better shows carbon dioxide and water to be different substances? Explain why
you chose this model.
Carlos' Model
Waterpartie
Carbon dioxide
particle
Javier's Model
Oxygen atom
Hydrogen atom
Carbon atom

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.