Input interpretation
![tungsten(VI) fluoride | molar mass](../image_source/3e03c6fe8bed999e2c2b22bd326ae141.png)
tungsten(VI) fluoride | molar mass
Result
![Find the molar mass, M, for tungsten(VI) fluoride: 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: WF_6 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 6 W (tungsten) | 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 W (tungsten) | 1 | 183.84 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 W (tungsten) | 1 | 183.84 | 1 × 183.84 = 183.84 M = 113.990418978 g/mol + 183.84 g/mol = 297.83 g/mol](../image_source/2058b382d0ef49fbc2e90b12e6125de3.png)
Find the molar mass, M, for tungsten(VI) fluoride: 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: WF_6 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 6 W (tungsten) | 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 W (tungsten) | 1 | 183.84 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 W (tungsten) | 1 | 183.84 | 1 × 183.84 = 183.84 M = 113.990418978 g/mol + 183.84 g/mol = 297.83 g/mol
Unit conversion
![0.29783 kg/mol (kilograms per mole)](../image_source/b3e1677561262fae6dec4252ad53121d.png)
0.29783 kg/mol (kilograms per mole)
Comparisons
![≈ 0.41 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/25f0f111965500041ccdd4f40d180a82.png)
≈ 0.41 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/9c9ebe16aab2fa3c9018db409319abcd.png)
≈ 1.5 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 5.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/3a278a4f6a700b6d7856f0002e50aa7b.png)
≈ 5.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.9×10^-22 grams | 4.9×10^-25 kg (kilograms) | 298 u (unified atomic mass units) | 298 Da (daltons)](../image_source/ba4f78bd6edea5a3813c3abe5782db18.png)
Mass of a molecule m from m = M/N_A: | 4.9×10^-22 grams | 4.9×10^-25 kg (kilograms) | 298 u (unified atomic mass units) | 298 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 298](../image_source/6793ac19035cd760ba3cbf44b306618e.png)
Relative molecular mass M_r from M_r = M_u/M: | 298