Input interpretation
![sodium hypochlorite | molar mass](../image_source/6120ba7a73850076d324313e9ca83a16.png)
sodium hypochlorite | molar mass
Result
![Find the molar mass, M, for sodium hypochlorite: 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: NaOCl Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 1 Na (sodium) | 1 O (oxygen) | 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) Cl (chlorine) | 1 | 35.45 Na (sodium) | 1 | 22.98976928 O (oxygen) | 1 | 15.999 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) Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 Na (sodium) | 1 | 22.98976928 | 1 × 22.98976928 = 22.98976928 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 35.45 g/mol + 22.98976928 g/mol + 15.999 g/mol = 74.44 g/mol](../image_source/5c38d5bf5c662a06b315a67871fdac15.png)
Find the molar mass, M, for sodium hypochlorite: 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: NaOCl Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 1 Na (sodium) | 1 O (oxygen) | 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) Cl (chlorine) | 1 | 35.45 Na (sodium) | 1 | 22.98976928 O (oxygen) | 1 | 15.999 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) Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 Na (sodium) | 1 | 22.98976928 | 1 × 22.98976928 = 22.98976928 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 35.45 g/mol + 22.98976928 g/mol + 15.999 g/mol = 74.44 g/mol
Unit conversion
![0.07444 kg/mol (kilograms per mole)](../image_source/e8a8d3afcb140e2afac713f787ee20eb.png)
0.07444 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.1 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/107aafe844d259dee16a2d55e2df5192.png)
≈ ( 0.1 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.38 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/76fc1e44013653337781355e9ef6cbb2.png)
≈ 0.38 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.3 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/644d738f64ac3e17cb840d9bcd8f652f.png)
≈ 1.3 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 1.2×10^-22 grams | 1.2×10^-25 kg (kilograms) | 74 u (unified atomic mass units) | 74 Da (daltons)](../image_source/100c3c6546d3d546223a293349c4dc8c.png)
Mass of a molecule m from m = M/N_A: | 1.2×10^-22 grams | 1.2×10^-25 kg (kilograms) | 74 u (unified atomic mass units) | 74 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 74](../image_source/ef850b3784e8e817053b51263a1c18c8.png)
Relative molecular mass M_r from M_r = M_u/M: | 74