Input interpretation
![acetylthiocholine iodide | molar mass](../image_source/3a11bd31193bdc8ccee6d64391b90567.png)
acetylthiocholine iodide | molar mass
Result
![Find the molar mass, M, for acetylthiocholine iodide: 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_7H_16INOS Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 7 H (hydrogen) | 16 I (iodine) | 1 N (nitrogen) | 1 O (oxygen) | 1 S (sulfur) | 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) | 16 | 1.008 I (iodine) | 1 | 126.90447 N (nitrogen) | 1 | 14.007 O (oxygen) | 1 | 15.999 S (sulfur) | 1 | 32.06 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) | 16 | 1.008 | 16 × 1.008 = 16.128 I (iodine) | 1 | 126.90447 | 1 × 126.90447 = 126.90447 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 M = 84.077 g/mol + 16.128 g/mol + 126.90447 g/mol + 14.007 g/mol + 15.999 g/mol + 32.06 g/mol = 289.18 g/mol](../image_source/cd96d7c1704a66284e582251c6ec103f.png)
Find the molar mass, M, for acetylthiocholine iodide: 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_7H_16INOS Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 7 H (hydrogen) | 16 I (iodine) | 1 N (nitrogen) | 1 O (oxygen) | 1 S (sulfur) | 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) | 16 | 1.008 I (iodine) | 1 | 126.90447 N (nitrogen) | 1 | 14.007 O (oxygen) | 1 | 15.999 S (sulfur) | 1 | 32.06 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) | 16 | 1.008 | 16 × 1.008 = 16.128 I (iodine) | 1 | 126.90447 | 1 × 126.90447 = 126.90447 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 M = 84.077 g/mol + 16.128 g/mol + 126.90447 g/mol + 14.007 g/mol + 15.999 g/mol + 32.06 g/mol = 289.18 g/mol
Unit conversion
![0.28918 kg/mol (kilograms per mole)](../image_source/4214060efd2dcacb297ca786014ecbf6.png)
0.28918 kg/mol (kilograms per mole)
Comparisons
![≈ 0.4 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/ae2e844ac642d30633a95f8f8d6581f1.png)
≈ 0.4 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/1b6c22c587e2e48c81b3630020da85ec.png)
≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.9 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/390ecf7c46b0936813aa7ca4fa5d3b9c.png)
≈ 4.9 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.8×10^-22 grams | 4.8×10^-25 kg (kilograms) | 289 u (unified atomic mass units) | 289 Da (daltons)](../image_source/2221ae87e52eb0a2bf43535f8e218234.png)
Mass of a molecule m from m = M/N_A: | 4.8×10^-22 grams | 4.8×10^-25 kg (kilograms) | 289 u (unified atomic mass units) | 289 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 289](../image_source/6e2904eadf9e48dae3e02053519eb7cc.png)
Relative molecular mass M_r from M_r = M_u/M: | 289