Input interpretation
![strontium sulfate | molar mass](../image_source/853d05a7e6759771a69e94a017243686.png)
strontium sulfate | molar mass
Result
![Find the molar mass, M, for strontium sulfate: 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: SrSO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i O (oxygen) | 4 S (sulfur) | 1 Sr (strontium) | 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) O (oxygen) | 4 | 15.999 S (sulfur) | 1 | 32.06 Sr (strontium) | 1 | 87.62 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) O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 Sr (strontium) | 1 | 87.62 | 1 × 87.62 = 87.62 M = 63.996 g/mol + 32.06 g/mol + 87.62 g/mol = 183.68 g/mol](../image_source/28d160f9f3f612acfcfadfc537737a02.png)
Find the molar mass, M, for strontium sulfate: 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: SrSO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i O (oxygen) | 4 S (sulfur) | 1 Sr (strontium) | 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) O (oxygen) | 4 | 15.999 S (sulfur) | 1 | 32.06 Sr (strontium) | 1 | 87.62 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) O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 Sr (strontium) | 1 | 87.62 | 1 × 87.62 = 87.62 M = 63.996 g/mol + 32.06 g/mol + 87.62 g/mol = 183.68 g/mol
Unit conversion
![0.1837 kg/mol (kilograms per mole)](../image_source/af9d816e1bb17d7f4cce554e3107743a.png)
0.1837 kg/mol (kilograms per mole)
Comparisons
![≈ 0.25 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/a830587855abc819e8153f2e43e7ace9.png)
≈ 0.25 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.95 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/a482598feffb3d89019a113f52faa748.png)
≈ 0.95 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 3.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/333ae7e870e51e4dc71f4546b010d348.png)
≈ 3.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 3.1×10^-22 grams | 3.1×10^-25 kg (kilograms) | 184 u (unified atomic mass units) | 184 Da (daltons)](../image_source/082239cc3f64e13451bd7b886451df96.png)
Mass of a molecule m from m = M/N_A: | 3.1×10^-22 grams | 3.1×10^-25 kg (kilograms) | 184 u (unified atomic mass units) | 184 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 184](../image_source/faec353f6e26110dc332c5e5b6fc0584.png)
Relative molecular mass M_r from M_r = M_u/M: | 184