Input interpretation
![N-propanol | molecular mass](../image_source/1356f78ee6d4312ee09267b68c780331.png)
N-propanol | molecular mass
Result
![Find the molecular mass, m, for N-propanol: 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: CH_3CH_2CH_2OH Use the chemical formula, CH_3CH_2CH_2OH, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 8 O (oxygen) | 1 Look up the atomic mass, m_i, in unified atomic mass units, u, for each element in the periodic table: | N_i | m_i/u C (carbon) | 3 | 12.011 H (hydrogen) | 8 | 1.008 O (oxygen) | 1 | 15.999 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molecular mass, m: Answer: | | | N_i | m_i/u | mass/u C (carbon) | 3 | 12.011 | 3 × 12.011 = 36.033 H (hydrogen) | 8 | 1.008 | 8 × 1.008 = 8.064 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 m = 36.033 u + 8.064 u + 15.999 u = 60.096 u](../image_source/c7a77960c82966ead3e998485d4a7e0e.png)
Find the molecular mass, m, for N-propanol: 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: CH_3CH_2CH_2OH Use the chemical formula, CH_3CH_2CH_2OH, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 8 O (oxygen) | 1 Look up the atomic mass, m_i, in unified atomic mass units, u, for each element in the periodic table: | N_i | m_i/u C (carbon) | 3 | 12.011 H (hydrogen) | 8 | 1.008 O (oxygen) | 1 | 15.999 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molecular mass, m: Answer: | | | N_i | m_i/u | mass/u C (carbon) | 3 | 12.011 | 3 × 12.011 = 36.033 H (hydrogen) | 8 | 1.008 | 8 × 1.008 = 8.064 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 m = 36.033 u + 8.064 u + 15.999 u = 60.096 u
Unit conversions
![60.1 Da (daltons)](../image_source/fc925ec369f8ce0bd16cadab244e90e1.png)
60.1 Da (daltons)
![0.0601 kDa (kilodaltons)](../image_source/cf368b56bb60b2c9bc68347461a5559c.png)
0.0601 kDa (kilodaltons)
![9.979×10^-23 grams](../image_source/5f7f9c601029a0f26ca286ad5dd50de5.png)
9.979×10^-23 grams
![9.979×10^-26 kg (kilograms)](../image_source/470fbeb556c9e9b8e5c4a92e7dc7c51c.png)
9.979×10^-26 kg (kilograms)
![60.1 chemical atomic mass units (unit officially deprecated)](../image_source/13f90a96a689da0bffe5d828156c2820.png)
60.1 chemical atomic mass units (unit officially deprecated)
![60.12 physical atomic mass units (unit officially deprecated)](../image_source/1a369b1e3c6b63b52122369a08965934.png)
60.12 physical atomic mass units (unit officially deprecated)
Comparisons as mass of molecule
![≈ ( 0.083 ≈ 1/12 ) × molecular mass of fullerene ( ≈ 721 u )](../image_source/3ce8335cf12a302e8b25afc7883c6cab.png)
≈ ( 0.083 ≈ 1/12 ) × molecular mass of fullerene ( ≈ 721 u )
![≈ 0.31 × molecular mass of caffeine ( ≈ 194 u )](../image_source/6c2d26d8dc89f401564040ff00e597d1.png)
≈ 0.31 × molecular mass of caffeine ( ≈ 194 u )
![≈ molecular mass of sodium chloride ( ≈ 58 u )](../image_source/5e8e9ef4d5e1ba44508f26cf472aca34.png)
≈ molecular mass of sodium chloride ( ≈ 58 u )
Corresponding quantities
![Relative atomic mass A_r from A_r = m_aN_A/M_u: | 60](../image_source/ea774bf4d89e13a16298a91fbdb4869d.png)
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 60
![Molar mass M from M = m_aN_A: | 60 g/mol (grams per mole)](../image_source/d06411f1eeabc33b592bfbcceffe10a5.png)
Molar mass M from M = m_aN_A: | 60 g/mol (grams per mole)
![Relative molecular mass M_r from M_r = m_mN_A/M_u: | 60](../image_source/975f2d9f51163a6ec263c9fefa60fc5c.png)
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 60
![Molar mass M from M = m_mN_A: | 60 g/mol (grams per mole)](../image_source/0b2f7a9575225e71e04c60acad82ec2d.png)
Molar mass M from M = m_mN_A: | 60 g/mol (grams per mole)