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...sand to cement required to make concrete is 3:1. If you have 40kg of cement, how much sand should you have? Read the label from a bottle of wallpaper stripper: Dilute: add 1 part wallpaper stripper to 7 parts water. How much wallpaper stripper and water is needed to make 16 litres of solution? To make a solution of hair colourant you need to add one part of hair colourant...

...casts light on concepts like temperature, heat and spontaneous processes, which do not fit naturally into the Newtonian world-view. It is still instructive to return to the origins of the subject. Speaking very roughly, a steam engine is a device that uses fuel to convert water into steam and uses the resulting expansion in volume to drive a piston. The kinetic energy of...

...sand. If you need 5 batches to finish the wall, how much sand and cement will you need and what is the total mass in kilograms? Answer b. multiline equation line 1 Cement required equals five multiplication 250 g equals 1250 g multiline equation line 1 Sand required equals five multiplication 750 g equals 3750 g multiline equation line 1 Total mass of sand and cement...