Zinc ore (rock) is treated with sulfuric acid producing a solution with undissolved zinc ore and releasing hydrogen sulfide gas.  If 50.0 mL of sulfuric acid (sulfuric acid density is 1.153 g/mL) is added to 10.8 g of zinc ore the resulting solution has a mass of 65.1 g.  Calculate the volume of hydrogen sulfide gas produced (hydrogen sulfide density is 1.393 g/L).  Remember the law of conservation of mass.

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.