damilola

A vertical radio mast is supported by wires attached to its top and to points on the level ground 9m from its base. If each wire is 31m long m, find the height of the mast.

150g of ice at 0 degreecelcius is mixed with 300g of water at 50 degreecelcius.calculate the temperature of the mixture.

in the laboratory, concentrated hydrogen chloride acid reacted with aluminium. hydrogen gas evolved was collected over water at 25 degree celcius and had a volume of 355 centimetre cube at a total pressure of 750mmHg.(the vapour pressure of water at 25 de...