Input interpretation
![lead(II) formate | molar mass](../image_source/9cb3c9f4d6880a0c3f15da55f9c95321.png)
lead(II) formate | molar mass
Result
![Find the molar mass, M, for lead(II) formate: 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_2H_2O_4Pb Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 H (hydrogen) | 2 O (oxygen) | 4 Pb (lead) | 1 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 H (hydrogen) | 2 | 1.008 O (oxygen) | 4 | 15.999 Pb (lead) | 1 | 207.2 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 H (hydrogen) | 2 | 1.008 | 2 × 1.008 = 2.016 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 Pb (lead) | 1 | 207.2 | 1 × 207.2 = 207.2 M = 24.022 g/mol + 2.016 g/mol + 63.996 g/mol + 207.2 g/mol = 297.2 g/mol](../image_source/a28f5b9d144005e67e296b9e00caff02.png)
Find the molar mass, M, for lead(II) formate: 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_2H_2O_4Pb Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 H (hydrogen) | 2 O (oxygen) | 4 Pb (lead) | 1 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 H (hydrogen) | 2 | 1.008 O (oxygen) | 4 | 15.999 Pb (lead) | 1 | 207.2 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 H (hydrogen) | 2 | 1.008 | 2 × 1.008 = 2.016 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 Pb (lead) | 1 | 207.2 | 1 × 207.2 = 207.2 M = 24.022 g/mol + 2.016 g/mol + 63.996 g/mol + 207.2 g/mol = 297.2 g/mol
Unit conversion
![0.2972 kg/mol (kilograms per mole)](../image_source/a612e013dc64c258ed0831e036f64447.png)
0.2972 kg/mol (kilograms per mole)
Comparisons
![≈ 0.41 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/e6f93db41a44ece5c5575dcc818a04cc.png)
≈ 0.41 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/9cc7e4ada27abde731ac6362754a1d1c.png)
≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 5.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/e30bb6c4ff84027c693b26af338b3ce5.png)
≈ 5.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.9×10^-22 grams | 4.9×10^-25 kg (kilograms) | 297 u (unified atomic mass units) | 297 Da (daltons)](../image_source/018b1c9a301d48b24c1aef48c7295719.png)
Mass of a molecule m from m = M/N_A: | 4.9×10^-22 grams | 4.9×10^-25 kg (kilograms) | 297 u (unified atomic mass units) | 297 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 297](../image_source/5831b37ba3f94b59e5b3b97f5e21f016.png)
Relative molecular mass M_r from M_r = M_u/M: | 297