Input interpretation
![o-toluidine | molar mass](../image_source/f44fd992c88f75eaf4da41615cfc6cd7.png)
o-toluidine | molar mass
Result
![Find the molar mass, M, for o-toluidine: 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: CH_3C_6H_4NH_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 7 H (hydrogen) | 9 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) | 7 | 12.011 H (hydrogen) | 9 | 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) | 7 | 12.011 | 7 × 12.011 = 84.077 H (hydrogen) | 9 | 1.008 | 9 × 1.008 = 9.072 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 84.077 g/mol + 9.072 g/mol + 14.007 g/mol = 107.156 g/mol](../image_source/251f7696f338a3a7e353a95c658bf949.png)
Find the molar mass, M, for o-toluidine: 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: CH_3C_6H_4NH_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 7 H (hydrogen) | 9 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) | 7 | 12.011 H (hydrogen) | 9 | 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) | 7 | 12.011 | 7 × 12.011 = 84.077 H (hydrogen) | 9 | 1.008 | 9 × 1.008 = 9.072 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 84.077 g/mol + 9.072 g/mol + 14.007 g/mol = 107.156 g/mol
Unit conversion
![0.10716 kg/mol (kilograms per mole)](../image_source/99e9aee5d9332b23e7ba2c426f6681c5.png)
0.10716 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.15 ≈ 1/7 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/ec76e73c7bf811a37ac205dff18371a4.png)
≈ ( 0.15 ≈ 1/7 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.55 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/7f534accabb11db26aba53feb362db49.png)
≈ 0.55 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.8 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/66a2467f9e5921d12c232f45769c559f.png)
≈ 1.8 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 1.8×10^-22 grams | 1.8×10^-25 kg (kilograms) | 107 u (unified atomic mass units) | 107 Da (daltons)](../image_source/4895811654eb32948d6e6dfbb2674c2e.png)
Mass of a molecule m from m = M/N_A: | 1.8×10^-22 grams | 1.8×10^-25 kg (kilograms) | 107 u (unified atomic mass units) | 107 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 107](../image_source/f6fac02a902c09d81859ba963f5c26d0.png)
Relative molecular mass M_r from M_r = M_u/M: | 107