Input interpretation
![manganese carbonate | molar mass](../image_source/c81049ac9672e3823c49575514b1ab73.png)
manganese carbonate | molar mass
Result
![Find the molar mass, M, for manganese carbonate: 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: MnCO_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 Mn (manganese) | 1 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) C (carbon) | 1 | 12.011 Mn (manganese) | 1 | 54.938044 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) C (carbon) | 1 | 12.011 | 1 × 12.011 = 12.011 Mn (manganese) | 1 | 54.938044 | 1 × 54.938044 = 54.938044 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 12.011 g/mol + 54.938044 g/mol + 47.997 g/mol = 114.946 g/mol](../image_source/68853fa770dc978d480f5c0549567eea.png)
Find the molar mass, M, for manganese carbonate: 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: MnCO_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 Mn (manganese) | 1 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) C (carbon) | 1 | 12.011 Mn (manganese) | 1 | 54.938044 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) C (carbon) | 1 | 12.011 | 1 × 12.011 = 12.011 Mn (manganese) | 1 | 54.938044 | 1 × 54.938044 = 54.938044 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 12.011 g/mol + 54.938044 g/mol + 47.997 g/mol = 114.946 g/mol
Unit conversion
![0.11495 kg/mol (kilograms per mole)](../image_source/b7868ac52489e67405a0e8507e56eaf4.png)
0.11495 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.16 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/a854561cf0710007e0806fa0fbde0746.png)
≈ ( 0.16 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.59 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/b4ea0c74dd51a92bca08a0a2edf9b3d3.png)
≈ 0.59 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/785c5bd50ca5a97812fcee9130310ff1.png)
≈ 2 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 1.9×10^-22 grams | 1.9×10^-25 kg (kilograms) | 115 u (unified atomic mass units) | 115 Da (daltons)](../image_source/063a8b20c76dcae90eb62191f3d5175a.png)
Mass of a molecule m from m = M/N_A: | 1.9×10^-22 grams | 1.9×10^-25 kg (kilograms) | 115 u (unified atomic mass units) | 115 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 115](../image_source/25045d69e1a0c40c33c40e90913ee865.png)
Relative molecular mass M_r from M_r = M_u/M: | 115