Input interpretation
![nickel carbonyl | molecular mass](../image_source/443d994460daa80ae265bb0a1f4b718f.png)
nickel carbonyl | molecular mass
Result
![Find the molecular mass, m, for nickel carbonyl: 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: Ni(CO)_4 Use the chemical formula, Ni(CO)_4, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 4 Ni (nickel) | 1 O (oxygen) | 4 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) | 4 | 12.011 Ni (nickel) | 1 | 58.6934 O (oxygen) | 4 | 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) | 4 | 12.011 | 4 × 12.011 = 48.044 Ni (nickel) | 1 | 58.6934 | 1 × 58.6934 = 58.6934 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 m = 48.044 u + 58.6934 u + 63.996 u = 170.733 u](../image_source/fc41edd5cd983e5d6e1eda0d34c2ea7e.png)
Find the molecular mass, m, for nickel carbonyl: 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: Ni(CO)_4 Use the chemical formula, Ni(CO)_4, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 4 Ni (nickel) | 1 O (oxygen) | 4 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) | 4 | 12.011 Ni (nickel) | 1 | 58.6934 O (oxygen) | 4 | 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) | 4 | 12.011 | 4 × 12.011 = 48.044 Ni (nickel) | 1 | 58.6934 | 1 × 58.6934 = 58.6934 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 m = 48.044 u + 58.6934 u + 63.996 u = 170.733 u
Unit conversions
![170.73 Da (daltons)](../image_source/85097f8d14d057fe3f7d560376f059e6.png)
170.73 Da (daltons)
![0.17073 kDa (kilodaltons)](../image_source/dfd6694de9e1c3fdf74e3b32b17dae2f.png)
0.17073 kDa (kilodaltons)
![2.8351×10^-22 grams](../image_source/56d8fe4a7918ff0167b8bacf7adef929.png)
2.8351×10^-22 grams
![2.8351×10^-25 kg (kilograms)](../image_source/eacbb8afd0a32b12d448fe8a99b97270.png)
2.8351×10^-25 kg (kilograms)
![170.74 chemical atomic mass units (unit officially deprecated)](../image_source/e2a0a5aec6e3f7f3a8954daf55b255f8.png)
170.74 chemical atomic mass units (unit officially deprecated)
![170.79 physical atomic mass units (unit officially deprecated)](../image_source/4a3808c2e1152c6eca4e6c3b6b98a380.png)
170.79 physical atomic mass units (unit officially deprecated)
Comparisons as mass of molecule
![≈ ( 0.24 ≈ 1/4 ) × molecular mass of fullerene ( ≈ 721 u )](../image_source/58d8eb011dadcccc077aadd65bcbf285.png)
≈ ( 0.24 ≈ 1/4 ) × molecular mass of fullerene ( ≈ 721 u )
![≈ 0.88 × molecular mass of caffeine ( ≈ 194 u )](../image_source/512485ceba780faae695d47198929f37.png)
≈ 0.88 × molecular mass of caffeine ( ≈ 194 u )
![≈ 2.9 × molecular mass of sodium chloride ( ≈ 58 u )](../image_source/77a4e955ae2fc4b4b7347d124947513a.png)
≈ 2.9 × molecular mass of sodium chloride ( ≈ 58 u )
Corresponding quantities
![Relative atomic mass A_r from A_r = m_aN_A/M_u: | 171](../image_source/eaabb23be7209b4ed314d433edd7c4fe.png)
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 171
![Molar mass M from M = m_aN_A: | 171 g/mol (grams per mole)](../image_source/f84ae077e4989bac468ef073f5c3d6d9.png)
Molar mass M from M = m_aN_A: | 171 g/mol (grams per mole)
![Relative molecular mass M_r from M_r = m_mN_A/M_u: | 171](../image_source/c74a4b5718f9e0db8700af153c2eddf4.png)
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 171
![Molar mass M from M = m_mN_A: | 171 g/mol (grams per mole)](../image_source/2d6109c7a6bdb9f65de0a7d565c2876f.png)
Molar mass M from M = m_mN_A: | 171 g/mol (grams per mole)