Input interpretation
palladium(II) iodide | molar mass
Result
Find the molar mass, M, for palladium(II) iodide: 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: I_2Pd Use the chemical formula, I_2Pd, to count the number of atoms, N_i, for each element: | N_i I (iodine) | 2 Pd (palladium) | 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) I (iodine) | 2 | 126.90447 Pd (palladium) | 1 | 106.42 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) I (iodine) | 2 | 126.90447 | 2 × 126.90447 = 253.80894 Pd (palladium) | 1 | 106.42 | 1 × 106.42 = 106.42 M = 253.80894 g/mol + 106.42 g/mol = 360.23 g/mol
Unit conversion
0.36023 kg/mol (kilograms per mole)
Comparisons
≈ 0.5 × molar mass of fullerene ( ≈ 721 g/mol )
≈ 1.9 × molar mass of caffeine ( ≈ 194 g/mol )
≈ 6.2 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 6×10^-22 grams | 6×10^-25 kg (kilograms) | 360 u (unified atomic mass units) | 360 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 360