Input interpretation
![molybdenum(VI) tetrachloride oxide | molar mass](../image_source/43c2ef5a43bbc0e99ca40ecfd5751f9b.png)
molybdenum(VI) tetrachloride oxide | molar mass
Result
![Find the molar mass, M, for molybdenum(VI) tetrachloride oxide: 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: MoOCl_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 4 Mo (molybdenum) | 1 O (oxygen) | 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) Cl (chlorine) | 4 | 35.45 Mo (molybdenum) | 1 | 95.95 O (oxygen) | 1 | 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) Cl (chlorine) | 4 | 35.45 | 4 × 35.45 = 141.80 Mo (molybdenum) | 1 | 95.95 | 1 × 95.95 = 95.95 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 141.80 g/mol + 95.95 g/mol + 15.999 g/mol = 253.75 g/mol](../image_source/a1b39fe0432a6d2d6ddffc405a0bd29b.png)
Find the molar mass, M, for molybdenum(VI) tetrachloride oxide: 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: MoOCl_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 4 Mo (molybdenum) | 1 O (oxygen) | 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) Cl (chlorine) | 4 | 35.45 Mo (molybdenum) | 1 | 95.95 O (oxygen) | 1 | 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) Cl (chlorine) | 4 | 35.45 | 4 × 35.45 = 141.80 Mo (molybdenum) | 1 | 95.95 | 1 × 95.95 = 95.95 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 141.80 g/mol + 95.95 g/mol + 15.999 g/mol = 253.75 g/mol
Unit conversion
![0.2537 kg/mol (kilograms per mole)](../image_source/579763a726de04631b931118163f9137.png)
0.2537 kg/mol (kilograms per mole)
Comparisons
![≈ 0.35 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/287914c5d469eda8af43065e1424c1aa.png)
≈ 0.35 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.3 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/b1d6bd9e1b4cef444e7ea3a3ef75bf94.png)
≈ 1.3 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.3 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/becc2627ce280bcf5bda23fdba023ffe.png)
≈ 4.3 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.2×10^-22 grams | 4.2×10^-25 kg (kilograms) | 254 u (unified atomic mass units) | 254 Da (daltons)](../image_source/a1f9354bf31d16d2e28f92dfffe06c4e.png)
Mass of a molecule m from m = M/N_A: | 4.2×10^-22 grams | 4.2×10^-25 kg (kilograms) | 254 u (unified atomic mass units) | 254 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 254](../image_source/6154b2131b3d8123c012c6e7df44cb76.png)
Relative molecular mass M_r from M_r = M_u/M: | 254