A 84mL portion of 0.10M sulphuric acid was added to 80.0mL of a solution containing 5.10g of barium chloride (molar mass is 208.2 g/mole). Find the mass of barium sulphate (molar mass is 233.4 g/mole) that will precipitate.

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

)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.