Input interpretation
yttrium iodate | molar mass
Result
Find the molar mass, M, for yttrium iodate: 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: Y(IO_3)_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i I (iodine) | 3 O (oxygen) | 9 Y (yttrium) | 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) | 3 | 126.90447 O (oxygen) | 9 | 15.999 Y (yttrium) | 1 | 88.90584 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) | 3 | 126.90447 | 3 × 126.90447 = 380.71341 O (oxygen) | 9 | 15.999 | 9 × 15.999 = 143.991 Y (yttrium) | 1 | 88.90584 | 1 × 88.90584 = 88.90584 M = 380.71341 g/mol + 143.991 g/mol + 88.90584 g/mol = 613.610 g/mol
Unit conversion
0.61361 kg/mol (kilograms per mole)
Comparisons
≈ 0.85 × molar mass of fullerene ( ≈ 721 g/mol )
≈ 3.2 × molar mass of caffeine ( ≈ 194 g/mol )
≈ 10 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 1×10^-21 grams | 1×10^-24 kg (kilograms) | 614 u (unified atomic mass units) | 614 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 614