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In what smallest whole-number ratio must N and O atoms combine to make dinitrogen to tetroxide ? What is the mole ratio of the elements in this compound? |
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Answer» the Empirical formula, we can find out the smallest whole number ratio which exists between the elements. Empirical formula and the molecular formula are mathematically related Molecular formula = n X empirical formula The molecular formula weight of dinitrogen tetroxide is 92 g/mol. To get the MOLAR mass, use the molar masses of the individual atoms of Nitrogen and Oxygen Molar mass of Nitrogen is 14.007 g/mol (SINCE it has one atom) Molar mass of Oxygen is 2 × 15.9994 g/mol= 32g/mol (Since it has two atoms) THUS, Empirical formula weight = 14 + 32 = 46g/mol Molecular formula weight = n x empirical formula weight 46g/mol = n x 92 g/mol Therefore, n = 2 which is the MOLE ratio of elements in this compound. The molecular formula for your compound is = → dinitrogen tetroxide. |
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