Input interpretation
gold(I) chloride | molar mass
Result
Find the molar mass, M, for gold(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: AuCl Use the chemical formula to count the number of atoms, N_i, for each element: | number of atoms Au (gold) | 1 Cl (chlorine) | 1 Look up the atomic mass, m_i, in g·mol^(-1) for each element in the periodic table: | number of atoms | atomic mass/g·mol^(-1) Au (gold) | 1 | 196.966569 Cl (chlorine) | 1 | 35.45 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molar mass, M: Answer: | | | number of atoms | atomic mass/g·mol^(-1) | mass/g·mol^(-1) Au (gold) | 1 | 196.966569 | 1 × 196.966569 = 196.966569 Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 M = 196.966569 g/mol + 35.45 g/mol = 232.42 g/mol
Unit conversion
0.23242 kg/mol (kilograms per mole)
Comparisons
≈ 0.32 × molar mass of fullerene (≈ 721 g/mol )
≈ 1.2 × molar mass of caffeine (≈ 194 g/mol )
≈ 4 × molar mass of sodium chloride (≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 3.9×10^-22 grams | 3.9×10^-25 kg (kilograms) | 232 u (unified atomic mass units) | 232 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 232