Input interpretation
![2, 4-d butyl ester | molar mass](../image_source/24ddae7241bbf460ace570b96918666b.png)
2, 4-d butyl ester | molar mass
Result
![Find the molar mass, M, for 2, 4-d butyl ester: 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_12H_14Cl_2O_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 12 Cl (chlorine) | 2 H (hydrogen) | 14 O (oxygen) | 3 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) | 12 | 12.011 Cl (chlorine) | 2 | 35.45 H (hydrogen) | 14 | 1.008 O (oxygen) | 3 | 15.999 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) | 12 | 12.011 | 12 × 12.011 = 144.132 Cl (chlorine) | 2 | 35.45 | 2 × 35.45 = 70.90 H (hydrogen) | 14 | 1.008 | 14 × 1.008 = 14.112 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 144.132 g/mol + 70.90 g/mol + 14.112 g/mol + 47.997 g/mol = 277.14 g/mol](../image_source/47c5c0199f11be16b78b6fdaf9f340f6.png)
Find the molar mass, M, for 2, 4-d butyl ester: 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_12H_14Cl_2O_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 12 Cl (chlorine) | 2 H (hydrogen) | 14 O (oxygen) | 3 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) | 12 | 12.011 Cl (chlorine) | 2 | 35.45 H (hydrogen) | 14 | 1.008 O (oxygen) | 3 | 15.999 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) | 12 | 12.011 | 12 × 12.011 = 144.132 Cl (chlorine) | 2 | 35.45 | 2 × 35.45 = 70.90 H (hydrogen) | 14 | 1.008 | 14 × 1.008 = 14.112 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 144.132 g/mol + 70.90 g/mol + 14.112 g/mol + 47.997 g/mol = 277.14 g/mol
Unit conversion
![0.2771 kg/mol (kilograms per mole)](../image_source/c66ecc9ec0d978dd30104361f1ee2658.png)
0.2771 kg/mol (kilograms per mole)
Comparisons
![≈ 0.38 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/f758bf5b35da3364ab9801f343c015dc.png)
≈ 0.38 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.4 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/90e67865f0d941ef73bfcf883d251e89.png)
≈ 1.4 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.7 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/a0b3108811d75389bc061ad7035f9ab5.png)
≈ 4.7 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.6×10^-22 grams | 4.6×10^-25 kg (kilograms) | 277 u (unified atomic mass units) | 277 Da (daltons)](../image_source/d9fb48cd2b206dc00a9a1d99165e13f8.png)
Mass of a molecule m from m = M/N_A: | 4.6×10^-22 grams | 4.6×10^-25 kg (kilograms) | 277 u (unified atomic mass units) | 277 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 277](../image_source/564e78ebb1a8fbd882567cb241e1d355.png)
Relative molecular mass M_r from M_r = M_u/M: | 277