Input interpretation
5-fluoro-2-propoxyphenylboronic acid | molar mass
Result
Find the molar mass, M, for 5-fluoro-2-propoxyphenylboronic acid: 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_9H_12BFO_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i B (boron) | 1 C (carbon) | 9 F (fluorine) | 1 H (hydrogen) | 12 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) B (boron) | 1 | 10.81 C (carbon) | 9 | 12.011 F (fluorine) | 1 | 18.998403163 H (hydrogen) | 12 | 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) B (boron) | 1 | 10.81 | 1 × 10.81 = 10.81 C (carbon) | 9 | 12.011 | 9 × 12.011 = 108.099 F (fluorine) | 1 | 18.998403163 | 1 × 18.998403163 = 18.998403163 H (hydrogen) | 12 | 1.008 | 12 × 1.008 = 12.096 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 10.81 g/mol + 108.099 g/mol + 18.998403163 g/mol + 12.096 g/mol + 47.997 g/mol = 198.00 g/mol
Unit conversion
0.198 kg/mol (kilograms per mole)
Comparisons
≈ 0.27 × molar mass of fullerene ( ≈ 721 g/mol )
≈ molar mass of caffeine ( ≈ 194 g/mol )
≈ 3.4 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 3.3×10^-22 grams | 3.3×10^-25 kg (kilograms) | 198 u (unified atomic mass units) | 198 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 198