Input interpretation
![tellurium hexafluoride | molar mass](../image_source/55ab18301b1bf6c54b85bc9563906dc0.png)
tellurium hexafluoride | molar mass
Result
![Find the molar mass, M, for tellurium hexafluoride: 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: TeF_6 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 6 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) F (fluorine) | 6 | 18.998403163 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) F (fluorine) | 6 | 18.998403163 | 6 × 18.998403163 = 113.990418978 Te (tellurium) | 1 | 127.60 | 1 × 127.60 = 127.60 M = 113.990418978 g/mol + 127.60 g/mol = 241.59 g/mol](../image_source/b79ebf55f902a58cb1e5f018a6c31f28.png)
Find the molar mass, M, for tellurium hexafluoride: 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: TeF_6 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 6 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) F (fluorine) | 6 | 18.998403163 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) F (fluorine) | 6 | 18.998403163 | 6 × 18.998403163 = 113.990418978 Te (tellurium) | 1 | 127.60 | 1 × 127.60 = 127.60 M = 113.990418978 g/mol + 127.60 g/mol = 241.59 g/mol
Unit conversion
![0.24159 kg/mol (kilograms per mole)](../image_source/4243b90b009ecf8396351bd9aa23d9aa.png)
0.24159 kg/mol (kilograms per mole)
Comparisons
![≈ 0.34 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/bbe64604b7dc97a81ff3494637ff65dc.png)
≈ 0.34 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.2 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/659aaa3764438e7016e2880d05b31a92.png)
≈ 1.2 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/2b609bb63eb543135cafc86f7fc9dd19.png)
≈ 4.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4×10^-22 grams | 4×10^-25 kg (kilograms) | 242 u (unified atomic mass units) | 242 Da (daltons)](../image_source/4c8b5083e3a7027a9e7479967c280e11.png)
Mass of a molecule m from m = M/N_A: | 4×10^-22 grams | 4×10^-25 kg (kilograms) | 242 u (unified atomic mass units) | 242 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 242](../image_source/49fa050f90833e43f176faf1f77feb85.png)
Relative molecular mass M_r from M_r = M_u/M: | 242