Input interpretation
![mercury(I) chloride | molar mass](../image_source/45196a4b5055ccaad7f8cce01c015442.png)
mercury(I) chloride | molar mass
Result
![Find the molar mass, M, for mercury(I) chloride: 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_2Cl_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 2 Hg (mercury) | 2 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) Cl (chlorine) | 2 | 35.45 Hg (mercury) | 2 | 200.592 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) Cl (chlorine) | 2 | 35.45 | 2 × 35.45 = 70.90 Hg (mercury) | 2 | 200.592 | 2 × 200.592 = 401.184 M = 70.90 g/mol + 401.184 g/mol = 472.08 g/mol](../image_source/ca920a55cccfd8ccfbe4da1ff8da8d8e.png)
Find the molar mass, M, for mercury(I) chloride: 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_2Cl_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 2 Hg (mercury) | 2 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) Cl (chlorine) | 2 | 35.45 Hg (mercury) | 2 | 200.592 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) Cl (chlorine) | 2 | 35.45 | 2 × 35.45 = 70.90 Hg (mercury) | 2 | 200.592 | 2 × 200.592 = 401.184 M = 70.90 g/mol + 401.184 g/mol = 472.08 g/mol
Unit conversion
![0.47208 kg/mol (kilograms per mole)](../image_source/6fc26a88e85913cc84ceda4721a1c5fb.png)
0.47208 kg/mol (kilograms per mole)
Comparisons
![≈ 0.66 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/e13cffb2f1f909a42afcf9a1e7ad1154.png)
≈ 0.66 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 2.4 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/943282b1a60ff3d0d30c55e1040aebc2.png)
≈ 2.4 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 8.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/c5ba7ab05bbd9c13bf4c6a9d2cc36f18.png)
≈ 8.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 7.8×10^-22 grams | 7.8×10^-25 kg (kilograms) | 472 u (unified atomic mass units) | 472 Da (daltons)](../image_source/955e5329fd4b8af982a277147c318a88.png)
Mass of a molecule m from m = M/N_A: | 7.8×10^-22 grams | 7.8×10^-25 kg (kilograms) | 472 u (unified atomic mass units) | 472 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 472](../image_source/8d33826b981eb62e85301d4c2bbf26a9.png)
Relative molecular mass M_r from M_r = M_u/M: | 472