Draw the hydration shells that form around a potassium ion and a chloride ion when potassium chloride (kcl) dissolves in water. label the positive, negative, and partial charges on the atoms.

Predict the products butane (c4h10) + oxygen —>

)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.

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass