Input interpretation
![copper(II) sulfate | molar mass](../image_source/4364ddbde203a8fcdf556290970adebe.png)
copper(II) sulfate | molar mass
Result
![Find the molar mass, M, for copper(II) 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: CuSO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cu (copper) | 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) Cu (copper) | 1 | 63.546 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) Cu (copper) | 1 | 63.546 | 1 × 63.546 = 63.546 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 M = 63.546 g/mol + 63.996 g/mol + 32.06 g/mol = 159.60 g/mol](../image_source/a1fb6c5ed3a02fec10f1f84f7e4cea18.png)
Find the molar mass, M, for copper(II) 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: CuSO_4 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cu (copper) | 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) Cu (copper) | 1 | 63.546 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) Cu (copper) | 1 | 63.546 | 1 × 63.546 = 63.546 O (oxygen) | 4 | 15.999 | 4 × 15.999 = 63.996 S (sulfur) | 1 | 32.06 | 1 × 32.06 = 32.06 M = 63.546 g/mol + 63.996 g/mol + 32.06 g/mol = 159.60 g/mol
Unit conversion
![0.1596 kg/mol (kilograms per mole)](../image_source/7081a5b2c0176e88de7b827456feb5ce.png)
0.1596 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.22 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/b57106c13c50ecddc7e3cf93f0799907.png)
≈ ( 0.22 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.82 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/77c5661b2ca5b1b2c6125eb86d0e4611.png)
≈ 0.82 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.7 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/1700863df921b77a67d6bed69f2aec69.png)
≈ 2.7 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.7×10^-22 grams | 2.7×10^-25 kg (kilograms) | 160 u (unified atomic mass units) | 160 Da (daltons)](../image_source/35f37e5b92f7e062c736e93237083087.png)
Mass of a molecule m from m = M/N_A: | 2.7×10^-22 grams | 2.7×10^-25 kg (kilograms) | 160 u (unified atomic mass units) | 160 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 160](../image_source/7b56e34eb064719dc3424e32399c5098.png)
Relative molecular mass M_r from M_r = M_u/M: | 160