Input interpretation
2-(trimethylsilyl)phenyl trifluoromethanesulfonate | molar mass
Result
Find the molar mass, M, for 2-(trimethylsilyl)phenyl trifluoromethanesulfonate: 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: CF_3SO_3C_6H_4Si(CH_3)_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 10 F (fluorine) | 3 H (hydrogen) | 13 O (oxygen) | 3 S (sulfur) | 1 Si (silicon) | 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) | 10 | 12.011 F (fluorine) | 3 | 18.998403163 H (hydrogen) | 13 | 1.008 O (oxygen) | 3 | 15.999 S (sulfur) | 1 | 32.06 Si (silicon) | 1 | 28.085 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) | 10 | 12.011 | 10 × 12.011 = 120.110 F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 H (hydrogen) | 13 | 1.008 | 13 × 1.008 = 13.104 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 120.110 g/mol + 56.995209489 g/mol + 13.104 g/mol + 47.997 g/mol + 32.06 g/mol + 28.085 g/mol = 298.35 g/mol
Unit conversion
0.29835 kg/mol (kilograms per mole)
Comparisons
≈ 0.41 × molar mass of fullerene ( ≈ 721 g/mol )
≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )
≈ 5.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 5×10^-22 grams | 5×10^-25 kg (kilograms) | 298 u (unified atomic mass units) | 298 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 298