Input interpretation
![molybdenum(IV) telluride | molar mass](../image_source/2ac6d4fe962ec63ffdb8fd7e5b23c4a1.png)
molybdenum(IV) telluride | molar mass
Result
![Find the molar mass, M, for molybdenum(IV) 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: MoTe_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Mo (molybdenum) | 1 Te (tellurium) | 2 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) Mo (molybdenum) | 1 | 95.95 Te (tellurium) | 2 | 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) Mo (molybdenum) | 1 | 95.95 | 1 × 95.95 = 95.95 Te (tellurium) | 2 | 127.60 | 2 × 127.60 = 255.20 M = 95.95 g/mol + 255.20 g/mol = 351.15 g/mol](../image_source/258e9d3d5b23f01ad09acf12b4dfaccb.png)
Find the molar mass, M, for molybdenum(IV) 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: MoTe_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Mo (molybdenum) | 1 Te (tellurium) | 2 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) Mo (molybdenum) | 1 | 95.95 Te (tellurium) | 2 | 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) Mo (molybdenum) | 1 | 95.95 | 1 × 95.95 = 95.95 Te (tellurium) | 2 | 127.60 | 2 × 127.60 = 255.20 M = 95.95 g/mol + 255.20 g/mol = 351.15 g/mol
Unit conversion
![0.3512 kg/mol (kilograms per mole)](../image_source/21af46b9a589330b86ad3fc843e8ab6f.png)
0.3512 kg/mol (kilograms per mole)
Comparisons
![≈ 0.49 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/db10c43685454ecc3a9f1c804db4857d.png)
≈ 0.49 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.8 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/4c59018bb83a8982cad01c3426ed91a4.png)
≈ 1.8 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 6 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/da91b037effc9fa0762b1fde109312e9.png)
≈ 6 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 5.8×10^-22 grams | 5.8×10^-25 kg (kilograms) | 351 u (unified atomic mass units) | 351 Da (daltons)](../image_source/978b460ada9a0e83f16ed2c27211d488.png)
Mass of a molecule m from m = M/N_A: | 5.8×10^-22 grams | 5.8×10^-25 kg (kilograms) | 351 u (unified atomic mass units) | 351 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 351](../image_source/dc80636be226725f6f8059175b43306f.png)
Relative molecular mass M_r from M_r = M_u/M: | 351