Input interpretation
![fluoroantimonic acid | molar mass](../image_source/4c0b8e22fcda435cfbdc67bdd7af7520.png)
fluoroantimonic acid | molar mass
Result
![Find the molar mass, M, for fluoroantimonic acid: 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: HSbF_6 Use the chemical formula, HSbF_6, to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 6 H (hydrogen) | 1 Sb (antimony) | 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 H (hydrogen) | 1 | 1.008 Sb (antimony) | 1 | 121.760 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 H (hydrogen) | 1 | 1.008 | 1 × 1.008 = 1.008 Sb (antimony) | 1 | 121.760 | 1 × 121.760 = 121.760 M = 113.990418978 g/mol + 1.008 g/mol + 121.760 g/mol = 236.758 g/mol](../image_source/591ed86d700c0297da63ac5907a5b47e.png)
Find the molar mass, M, for fluoroantimonic acid: 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: HSbF_6 Use the chemical formula, HSbF_6, to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 6 H (hydrogen) | 1 Sb (antimony) | 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 H (hydrogen) | 1 | 1.008 Sb (antimony) | 1 | 121.760 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 H (hydrogen) | 1 | 1.008 | 1 × 1.008 = 1.008 Sb (antimony) | 1 | 121.760 | 1 × 121.760 = 121.760 M = 113.990418978 g/mol + 1.008 g/mol + 121.760 g/mol = 236.758 g/mol
Unit conversion
![0.236758 kg/mol (kilograms per mole)](../image_source/c4e128d1e3ca19b8b7690cf379b0428e.png)
0.236758 kg/mol (kilograms per mole)
Comparisons
![≈ 0.33 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/cf36307f76549c6fdc01014ce76b7143.png)
≈ 0.33 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.2 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/3b75408104b13c0cf6f94280d964f232.png)
≈ 1.2 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/60d89525551608cd69ce9030aca52499.png)
≈ 4.1 × 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) | 237 u (unified atomic mass units) | 237 Da (daltons)](../image_source/1b414572d5988f07ee53369713596edc.png)
Mass of a molecule m from m = M/N_A: | 3.9×10^-22 grams | 3.9×10^-25 kg (kilograms) | 237 u (unified atomic mass units) | 237 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 237](../image_source/313464d6125fa20e23e3a410397109bb.png)
Relative molecular mass M_r from M_r = M_u/M: | 237