Input interpretation
![nickel carbonyl | molar mass](../image_source/fc78af1c9ea9d4b0ac93c30db64b6ebe.png)
nickel carbonyl | molar mass
Result
![Find the molar 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 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 g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) 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 molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) 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 g/mol + 58.6934 g/mol + 63.996 g/mol = 170.733 g/mol](../image_source/5ac71d7b02dfe1206fc72ef5e51ff6f6.png)
Find the molar 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 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 g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) 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 molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) 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 g/mol + 58.6934 g/mol + 63.996 g/mol = 170.733 g/mol
Unit conversion
![0.17073 kg/mol (kilograms per mole)](../image_source/900a41dd8e9b2788475aa255d232bbfd.png)
0.17073 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.24 ≈ 1/4 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/26b9063b580b5e1480967ee8236aec87.png)
≈ ( 0.24 ≈ 1/4 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.88 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/1f2c9e46e64c6b01a5ae131bcf4d72b3.png)
≈ 0.88 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.9 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/3c2f651756046a34cf0a6a3385e8b273.png)
≈ 2.9 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.8×10^-22 grams | 2.8×10^-25 kg (kilograms) | 171 u (unified atomic mass units) | 171 Da (daltons)](../image_source/d0a34a2301a5a7e9ae8c898bfec70f04.png)
Mass of a molecule m from m = M/N_A: | 2.8×10^-22 grams | 2.8×10^-25 kg (kilograms) | 171 u (unified atomic mass units) | 171 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 171](../image_source/2e866195d83337664256e40918129a46.png)
Relative molecular mass M_r from M_r = M_u/M: | 171