Input interpretation
(S)-α, α-bis[3, 5-bis(trifluoromethyl)phenyl]-2-pyrrolidinemethanol trimethylsilyl ether | molar mass
Result
Find the molar mass, M, for (S)-α, α-bis[3, 5-bis(trifluoromethyl)phenyl]-2-pyrrolidinemethanol trimethylsilyl ether: 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_24H_23F_12NOSi Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 24 Si (silicon) | 1 O (oxygen) | 1 N (nitrogen) | 1 F (fluorine) | 12 H (hydrogen) | 23 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) | 24 | 12.011 Si (silicon) | 1 | 28.085 O (oxygen) | 1 | 15.999 N (nitrogen) | 1 | 14.007 F (fluorine) | 12 | 18.998403163 H (hydrogen) | 23 | 1.008 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) | 24 | 12.011 | 24 × 12.011 = 288.264 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 F (fluorine) | 12 | 18.998403163 | 12 × 18.998403163 = 227.980837956 H (hydrogen) | 23 | 1.008 | 23 × 1.008 = 23.184 M = 288.264 g/mol + 28.085 g/mol + 15.999 g/mol + 14.007 g/mol + 227.980837956 g/mol + 23.184 g/mol = 597.520 g/mol
Unit conversion
0.5975 kg/mol (kilograms per mole)
Comparisons
≈ 0.83 × molar mass of fullerene ( ≈ 721 g/mol )
≈ 3.1 × molar mass of caffeine ( ≈ 194 g/mol )
≈ 10 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 9.9×10^-22 grams | 9.9×10^-25 kg (kilograms) | 598 u (unified atomic mass units) | 598 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 598