Input interpretation
![ferrous oxalate | molar mass](../image_source/407c06d91d08649546cb82c9b9d38e43.png)
ferrous oxalate | molar mass
Result
![Find the molar mass, M, for ferrous oxalate: 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: C_2FeO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 Fe (iron) | 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) | 2 | 12.011 Fe (iron) | 1 | 55.845 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) | 2 | 12.011 | 2 × 12.011 = 24.022 Fe (iron) | 1 | 55.845 | 1 × 55.845 = 55.845 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 M = 24.022 g/mol + 55.845 g/mol + 63.996 g/mol = 143.863 g/mol](../image_source/71c9e22e164adeea920ca9d8dfa3fccd.png)
Find the molar mass, M, for ferrous oxalate: 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: C_2FeO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 Fe (iron) | 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) | 2 | 12.011 Fe (iron) | 1 | 55.845 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) | 2 | 12.011 | 2 × 12.011 = 24.022 Fe (iron) | 1 | 55.845 | 1 × 55.845 = 55.845 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 M = 24.022 g/mol + 55.845 g/mol + 63.996 g/mol = 143.863 g/mol
Unit conversion
![0.14386 kg/mol (kilograms per mole)](../image_source/f433d7b860650ec78722f4887c23cc33.png)
0.14386 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.2 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/851b7c100923bdfee44f86a46be59759.png)
≈ ( 0.2 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.74 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/cb3c22a4859aeb8d28c55554c2e0702c.png)
≈ 0.74 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.5 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/1f8743a079f4d2fb9b8382b1c9c86f89.png)
≈ 2.5 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.4×10^-22 grams | 2.4×10^-25 kg (kilograms) | 144 u (unified atomic mass units) | 144 Da (daltons)](../image_source/a4a8edccc18e54c69bf3a6b0100c53e7.png)
Mass of a molecule m from m = M/N_A: | 2.4×10^-22 grams | 2.4×10^-25 kg (kilograms) | 144 u (unified atomic mass units) | 144 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 144](../image_source/7b30173ea0a7e322e140b90260ba3b81.png)
Relative molecular mass M_r from M_r = M_u/M: | 144