Input interpretation
![2, 4, 6-collidine | molar mass](../image_source/753f9127ac279d7bf269cb52a645426d.png)
2, 4, 6-collidine | molar mass
Result
![Find the molar mass, M, for 2, 4, 6-collidine: M = sum _iN_im_i Plan: • Write the chemical formula and gather atomic masses from the periodic table. • Determine values for N_i and m_i using these items. • Finally, compute the mass. Write the chemical formula: C_8H_11N Use the chemical formula, C_8H_11N, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 8 H (hydrogen) | 11 N (nitrogen) | 1 Look up the atomic mass, m_i, in g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) C (carbon) | 8 | 12.011 H (hydrogen) | 11 | 1.008 N (nitrogen) | 1 | 14.007 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) C (carbon) | 8 | 12.011 | 8 × 12.011 = 96.088 H (hydrogen) | 11 | 1.008 | 11 × 1.008 = 11.088 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 96.088 g/mol + 11.088 g/mol + 14.007 g/mol = 121.183 g/mol](../image_source/a3817c2d088b90bafec91398d5f129cd.png)
Find the molar mass, M, for 2, 4, 6-collidine: M = sum _iN_im_i Plan: • Write the chemical formula and gather atomic masses from the periodic table. • Determine values for N_i and m_i using these items. • Finally, compute the mass. Write the chemical formula: C_8H_11N Use the chemical formula, C_8H_11N, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 8 H (hydrogen) | 11 N (nitrogen) | 1 Look up the atomic mass, m_i, in g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) C (carbon) | 8 | 12.011 H (hydrogen) | 11 | 1.008 N (nitrogen) | 1 | 14.007 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) C (carbon) | 8 | 12.011 | 8 × 12.011 = 96.088 H (hydrogen) | 11 | 1.008 | 11 × 1.008 = 11.088 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 96.088 g/mol + 11.088 g/mol + 14.007 g/mol = 121.183 g/mol
Unit conversion
![0.12118 kg/mol (kilograms per mole)](../image_source/da5d0b9fce7a933b3ba74194a8b6af59.png)
0.12118 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.17 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/b6865ced16a0bd5e732f3001318e3813.png)
≈ ( 0.17 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.62 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/3cf6c64fbe9e406fbbacdfb58a3bc529.png)
≈ 0.62 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/602af3e9365e21c40cf75e3461b703e5.png)
≈ 2.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2×10^-22 grams | 2×10^-25 kg (kilograms) | 121 u (unified atomic mass units) | 121 Da (daltons)](../image_source/e156e4edf8f1ee326044580330d365e8.png)
Mass of a molecule m from m = M/N_A: | 2×10^-22 grams | 2×10^-25 kg (kilograms) | 121 u (unified atomic mass units) | 121 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 121](../image_source/5dcaea151aa7180097e21699764b6326.png)
Relative molecular mass M_r from M_r = M_u/M: | 121