a sample of black crystals containing only tungsten and chlorine, when reduced with hydrogen gives 0.2232g of tungsten metal and certain amount of hydrogen chloride which is absorbed in water. titration of the hydrochloric acid thus produced requires 46.2mL of 0.1051 M NaOH to reach the end point. what is the empirical formula of the black tungsten chloride

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released

Acylinder, with a piston pressing down with a constant pressure, is filled with 2.00 moles of a gas (n1), and its volume is 50.0 l (v1). if 0.400 mole of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside the cylinder?

You are in a laboratory creating a new chocolate bar. you want to create the sweetest chocolate bar by maximizing the sugar concentration. you are doing this by adding the sugar to a chocolate mixture. which would allow you to dissolve more sugar? stir the sugar more vigorously. add the sugar after heating the mixture. add the sugar after cooling the mixture. decrease the particle size of the sugar.