Input interpretation
![dibromoneopentyl glycol | molar mass](../image_source/c4d89e91c885ae1b8bcfc1ab5bc9c626.png)
dibromoneopentyl glycol | molar mass
Result
![Find the molar mass, M, for dibromoneopentyl glycol: 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: HOCH_2C(CH_2Br)_2CH_2OH Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Br (bromine) | 2 C (carbon) | 5 H (hydrogen) | 10 O (oxygen) | 2 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) Br (bromine) | 2 | 79.904 C (carbon) | 5 | 12.011 H (hydrogen) | 10 | 1.008 O (oxygen) | 2 | 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) Br (bromine) | 2 | 79.904 | 2 × 79.904 = 159.808 C (carbon) | 5 | 12.011 | 5 × 12.011 = 60.055 H (hydrogen) | 10 | 1.008 | 10 × 1.008 = 10.080 O (oxygen) | 2 | 15.999 | 2 × 15.999 = 31.998 M = 159.808 g/mol + 60.055 g/mol + 10.080 g/mol + 31.998 g/mol = 261.941 g/mol](../image_source/0cb0ff088cb7fe7bfda4d69420820f16.png)
Find the molar mass, M, for dibromoneopentyl glycol: 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: HOCH_2C(CH_2Br)_2CH_2OH Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Br (bromine) | 2 C (carbon) | 5 H (hydrogen) | 10 O (oxygen) | 2 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) Br (bromine) | 2 | 79.904 C (carbon) | 5 | 12.011 H (hydrogen) | 10 | 1.008 O (oxygen) | 2 | 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) Br (bromine) | 2 | 79.904 | 2 × 79.904 = 159.808 C (carbon) | 5 | 12.011 | 5 × 12.011 = 60.055 H (hydrogen) | 10 | 1.008 | 10 × 1.008 = 10.080 O (oxygen) | 2 | 15.999 | 2 × 15.999 = 31.998 M = 159.808 g/mol + 60.055 g/mol + 10.080 g/mol + 31.998 g/mol = 261.941 g/mol
Unit conversion
![0.26194 kg/mol (kilograms per mole)](../image_source/cffae3251f086cb84c23b15e13b97371.png)
0.26194 kg/mol (kilograms per mole)
Comparisons
![≈ 0.36 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/ec2139ec9c746c1f17e1437645dc33a8.png)
≈ 0.36 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.3 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/13d0e1808988aaf2a2a812ddc74e5c82.png)
≈ 1.3 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.5 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/0b8a8c9f11b444a28df751e698ba5e2a.png)
≈ 4.5 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.3×10^-22 grams | 4.3×10^-25 kg (kilograms) | 262 u (unified atomic mass units) | 262 Da (daltons)](../image_source/2f51073aa84d1fb70496cbdeeda5ffc3.png)
Mass of a molecule m from m = M/N_A: | 4.3×10^-22 grams | 4.3×10^-25 kg (kilograms) | 262 u (unified atomic mass units) | 262 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 262](../image_source/67060645038acc1b0c17d09e5ff18052.png)
Relative molecular mass M_r from M_r = M_u/M: | 262