Arock has a mass of 78.4g and a density of 8.3 8.5 g/ml what is the volume of the rock

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

How does a large body of water, such as the ocean, influence climate?

)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.