QUESTION 2 A certain compound contains only carbon, hydrogen and oxygen. This compound is 4.20% by mass of hydrogen. If the complete combustion of this compound produces 1.00367 ×1022 molecules of water, what is the mass of the sample of the unknown compound? Show all your calculations.

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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.