Input interpretation
gallium(II) telluride | molar mass
Result
Find the molar mass, M, for gallium(II) telluride: 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: GaTe Use the chemical formula, GaTe, to count the number of atoms, N_i, for each element: | N_i Ga (gallium) | 1 Te (tellurium) | 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) Ga (gallium) | 1 | 69.723 Te (tellurium) | 1 | 127.60 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) Ga (gallium) | 1 | 69.723 | 1 × 69.723 = 69.723 Te (tellurium) | 1 | 127.60 | 1 × 127.60 = 127.60 M = 69.723 g/mol + 127.60 g/mol = 197.32 g/mol
Unit conversion
0.19732 kg/mol (kilograms per mole)
Comparisons
≈ 0.27 × molar mass of fullerene ( ≈ 721 g/mol )
≈ 1.02 × molar mass of caffeine ( ≈ 194 g/mol )
≈ 3.4 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
Mass of a molecule m from m = M/N_A: | 3.3×10^-22 grams | 3.3×10^-25 kg (kilograms) | 197 u (unified atomic mass units) | 197 Da (daltons)
Relative molecular mass M_r from M_r = M_u/M: | 197