10. Methyl ethyl ketone, CH,COC,H, (1), is the solvent in most nail polish removers. The standard molar enthalpy of combustion of methyl ethyl ketone is -2444.1 kJ mol. (1) Write the thermochemical equation for the combustion of methyl ethyl ketone. (2) Use the standard molar enthalpies of formation in Table 7.2 to calculate the standard enthalpy of formation of methyl ethyl ketone.

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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.