Input interpretation
tin(IV) sulfide | molar mass
Result
Find the molar mass, M, for tin(IV) sulfide: 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: SnS_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i S (sulfur) | 2 Sn (tin) | 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) S (sulfur) | 2 | 32.06 Sn (tin) | 1 | 118.710 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) S (sulfur) | 2 | 32.06 | 2 × 32.06 = 64.12 Sn (tin) | 1 | 118.710 | 1 × 118.710 = 118.710 M = 64.12 g/mol + 118.710 g/mol = 182.83 g/mol
Unit conversion
0.1828 kg/mol (kilograms per mole)
Comparisons
≈ 0.25 × molar mass of fullerene ( ≈ 721 g/mol )
≈ 0.94 × molar mass of caffeine ( ≈ 194 g/mol )
≈ 3.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 3×10^-22 grams | 3×10^-25 kg (kilograms) | 183 u (unified atomic mass units) | 183 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 183