Input interpretation
![1, 1, 2-trichlorotrifluoroethane | molar mass](../image_source/374079246618fa0b3c2224f1973007ca.png)
1, 1, 2-trichlorotrifluoroethane | molar mass
Result
![Find the molar mass, M, for 1, 1, 2-trichlorotrifluoroethane: 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: ClCF_2CCl_2F Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 Cl (chlorine) | 3 F (fluorine) | 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) | 2 | 12.011 Cl (chlorine) | 3 | 35.45 F (fluorine) | 3 | 18.998403163 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) | 2 | 12.011 | 2 × 12.011 = 24.022 Cl (chlorine) | 3 | 35.45 | 3 × 35.45 = 106.35 F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 M = 24.022 g/mol + 106.35 g/mol + 56.995209489 g/mol = 187.37 g/mol](../image_source/b2c3e8559d1cd88e37201d01428cf936.png)
Find the molar mass, M, for 1, 1, 2-trichlorotrifluoroethane: 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: ClCF_2CCl_2F Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 Cl (chlorine) | 3 F (fluorine) | 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) | 2 | 12.011 Cl (chlorine) | 3 | 35.45 F (fluorine) | 3 | 18.998403163 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) | 2 | 12.011 | 2 × 12.011 = 24.022 Cl (chlorine) | 3 | 35.45 | 3 × 35.45 = 106.35 F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 M = 24.022 g/mol + 106.35 g/mol + 56.995209489 g/mol = 187.37 g/mol
Unit conversion
![0.1874 kg/mol (kilograms per mole)](../image_source/6b2ced9ada8e05eb4f2275477df1ac18.png)
0.1874 kg/mol (kilograms per mole)
Comparisons
![≈ 0.26 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/673ffcc565dd9e9fbed4e578baa31d17.png)
≈ 0.26 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.96 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/16a6ff1fdb919be564245f865334d8e9.png)
≈ 0.96 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 3.2 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/037e21ea46d33aafe1ed92eee894ba1a.png)
≈ 3.2 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 3.1×10^-22 grams | 3.1×10^-25 kg (kilograms) | 187 u (unified atomic mass units) | 187 Da (daltons)](../image_source/4f28c02e408ae8e62c9c802982770935.png)
Mass of a molecule m from m = M/N_A: | 3.1×10^-22 grams | 3.1×10^-25 kg (kilograms) | 187 u (unified atomic mass units) | 187 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 187](../image_source/91690359c28b92eafc9f51a246724d4e.png)
Relative molecular mass M_r from M_r = M_u/M: | 187