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A compound has the empirical formula CNH4. If 0.2 mol of its molecules has the mass 12.0 g, what is the molecular formula?
The molecular formula of CNH4 is a chemical formula that represents the number and types of atoms present in one molecule of a compound. In this case, CNH4 represents one molecule of cyanide and four molecules of ammonia.
The molecular formula of CNH4 is determined by analyzing the molecular weight of the compound and the ratio of the elements present. In this case, the molecular weight of CNH4 is 27.03 g/mol, indicating that each molecule contains one carbon atom, one nitrogen atom, and four hydrogen atoms.
The given mass of 12g and mole of 0.2mol of CNH4 indicate the amount of the compound present in a given sample. The mass of 12g represents the total weight of the compound, while the mole of 0.2mol represents the number of molecules present in the sample.
The molecular formula of CNH4 gives insight into the chemical properties of the compound. For example, it tells us that CNH4 is a basic compound due to the presence of four ammonia molecules, and it is also toxic due to the presence of one cyanide molecule.
The molecular formula of CNH4 cannot be changed unless the composition of the compound itself is altered. However, the molecular formula can be represented in different ways, such as a structural formula or a condensed formula, to provide more information about the arrangement of atoms in the molecule.