Input interpretation
(flophemesyl)diethylamine | molar mass
Result
Find the molar mass, M, for (flophemesyl)diethylamine: 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_16F_5NSi Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 12 F (fluorine) | 5 H (hydrogen) | 16 N (nitrogen) | 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) | 12 | 12.011 F (fluorine) | 5 | 18.998403163 H (hydrogen) | 16 | 1.008 N (nitrogen) | 1 | 14.007 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) | 12 | 12.011 | 12 × 12.011 = 144.132 F (fluorine) | 5 | 18.998403163 | 5 × 18.998403163 = 94.992015815 H (hydrogen) | 16 | 1.008 | 16 × 1.008 = 16.128 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 144.132 g/mol + 94.992015815 g/mol + 16.128 g/mol + 14.007 g/mol + 28.085 g/mol = 297.344 g/mol
Unit conversion
0.29734 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: | 4.9×10^-22 grams | 4.9×10^-25 kg (kilograms) | 297 u (unified atomic mass units) | 297 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 297