Input interpretation
![mercury(I) nitrate | molar mass](../image_source/7a16c5a3466d58fee02e3d39d6e5590e.png)
mercury(I) nitrate | molar mass
Result
![Find the molar mass, M, for mercury(I) nitrate: 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: Hg_2(NO_3)_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Hg (mercury) | 1 N (nitrogen) | 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) Hg (mercury) | 1 | 200.592 N (nitrogen) | 1 | 14.007 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) Hg (mercury) | 1 | 200.592 | 1 × 200.592 = 200.592 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 200.592 g/mol + 14.007 g/mol + 47.997 g/mol = 262.596 g/mol](../image_source/9927a6af5062b6c4e1c98231b87420eb.png)
Find the molar mass, M, for mercury(I) nitrate: 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: Hg_2(NO_3)_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Hg (mercury) | 1 N (nitrogen) | 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) Hg (mercury) | 1 | 200.592 N (nitrogen) | 1 | 14.007 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) Hg (mercury) | 1 | 200.592 | 1 × 200.592 = 200.592 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 200.592 g/mol + 14.007 g/mol + 47.997 g/mol = 262.596 g/mol
Unit conversion
![0.262596 kg/mol (kilograms per mole)](../image_source/555432d025380225b89feb4e8aa32092.png)
0.262596 kg/mol (kilograms per mole)
Comparisons
![≈ 0.36 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/874f0a83527cbacd73171bb48773784e.png)
≈ 0.36 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.4 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/3294ef93790da36226cf10118cf55e84.png)
≈ 1.4 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.5 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/8b8d490c6769ec4a1fa1cbaea6a13d10.png)
≈ 4.5 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.4×10^-22 grams | 4.4×10^-25 kg (kilograms) | 263 u (unified atomic mass units) | 263 Da (daltons)](../image_source/1dc68edf99481fb51aad4b6665d11726.png)
Mass of a molecule m from m = M/N_A: | 4.4×10^-22 grams | 4.4×10^-25 kg (kilograms) | 263 u (unified atomic mass units) | 263 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 263](../image_source/9b964e8dc8bf8ba7bcc199404df1b169.png)
Relative molecular mass M_r from M_r = M_u/M: | 263