If a molecule with an empirical formula CHO has a molar mass of 88.12 g/mol, what is its molecular formula?

C3H3O3

Explanation:

To find its molecular formula, we simply use the empirical formula together with the molar mass. Firstly, we obtain the molar mass of the empirical formula CHO. His can be obtained by using the masses of the individual atoms. The masses are 12, 1 and 16 for carbon, hydrogen and oxygen respectively.

Hence: (12+[6+1)n = 88.12

29n = 88.12

n = 3

The molecular formula is thus C3H3O3

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

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