Input interpretation
![duretter | molar mass](../image_source/fc32b2738c4d110f9885f754dfc76289.png)
duretter | molar mass
Result
![Find the molar mass, M, for duretter: 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: FeSO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Fe (iron) | 1 O (oxygen) | 4 S (sulfur) | 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) Fe (iron) | 1 | 55.845 O (oxygen) | 4 | 15.999 S (sulfur) | 1 | 32.06 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) Fe (iron) | 1 | 55.845 | 1 × 55.845 = 55.845 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 M = 55.845 g/mol + 63.996 g/mol + 32.06 g/mol = 151.90 g/mol](../image_source/1a4473628d638540a26a1644e20c2ae1.png)
Find the molar mass, M, for duretter: 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: FeSO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Fe (iron) | 1 O (oxygen) | 4 S (sulfur) | 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) Fe (iron) | 1 | 55.845 O (oxygen) | 4 | 15.999 S (sulfur) | 1 | 32.06 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) Fe (iron) | 1 | 55.845 | 1 × 55.845 = 55.845 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 M = 55.845 g/mol + 63.996 g/mol + 32.06 g/mol = 151.90 g/mol
Unit conversion
![0.1519 kg/mol (kilograms per mole)](../image_source/527124507ecd87dbf442fcfb939b3381.png)
0.1519 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.21 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/3aedb34ea270c560d8ffc09d0a01bce7.png)
≈ ( 0.21 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.78 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/3256b5b02a7dd72f5a410e2f27a25f43.png)
≈ 0.78 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.6 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/4f04a673954ba5b61937bbe9ed2e8fb9.png)
≈ 2.6 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.5×10^-22 grams | 2.5×10^-25 kg (kilograms) | 152 u (unified atomic mass units) | 152 Da (daltons)](../image_source/362937a9757b2c785b0ce1a7606a4798.png)
Mass of a molecule m from m = M/N_A: | 2.5×10^-22 grams | 2.5×10^-25 kg (kilograms) | 152 u (unified atomic mass units) | 152 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 152](../image_source/09c5bef982bd5213276ef310f6e08d34.png)
Relative molecular mass M_r from M_r = M_u/M: | 152