A metallurgist needs to make 60 kg of architectural bronze, which consist of 12 parts copper, 1 part lead and 2 parts of zinc. Calculate the mass of copper, lead and zinc which must be mixed. Your answer A student wants to make 750 ml of a beer/vodka mixture which contains 12% alcohol. She knows that the alcohol contents of beer and vodka is 8% and 38% respectively. Which volumes of beer and vodka does she need to mix?

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A: The solution is as follows:  

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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.