Input interpretation
![neodymium antimonide | molar mass](../image_source/de9140d6cc9e176e9949735876fd5d9b.png)
neodymium antimonide | molar mass
Result
![Find the molar mass, M, for neodymium antimonide: 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: NdSb Use the chemical formula, NdSb, to count the number of atoms, N_i, for each element: | N_i Nd (neodymium) | 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) Nd (neodymium) | 1 | 144.242 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) Nd (neodymium) | 1 | 144.242 | 1 × 144.242 = 144.242 Sb (antimony) | 1 | 121.760 | 1 × 121.760 = 121.760 M = 144.242 g/mol + 121.760 g/mol = 266.002 g/mol](../image_source/32493346a4d17b23f5bfa74022ab1a86.png)
Find the molar mass, M, for neodymium antimonide: 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: NdSb Use the chemical formula, NdSb, to count the number of atoms, N_i, for each element: | N_i Nd (neodymium) | 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) Nd (neodymium) | 1 | 144.242 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) Nd (neodymium) | 1 | 144.242 | 1 × 144.242 = 144.242 Sb (antimony) | 1 | 121.760 | 1 × 121.760 = 121.760 M = 144.242 g/mol + 121.760 g/mol = 266.002 g/mol
Unit conversion
![0.266002 kg/mol (kilograms per mole)](../image_source/2aa777ea2ec30b6ecda59372e6f8bc88.png)
0.266002 kg/mol (kilograms per mole)
Comparisons
![≈ 0.37 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/b32cbc0ad44b48d7304b40fbb20b5663.png)
≈ 0.37 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.4 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/529940ccbd718466a4cfaab8748e5337.png)
≈ 1.4 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.6 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/35856f63fdcb572fee118071a597debd.png)
≈ 4.6 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.4×10^-22 grams | 4.4×10^-25 kg (kilograms) | 266 u (unified atomic mass units) | 266 Da (daltons)](../image_source/fe92a397b143fe1481723244c97c3ae7.png)
Mass of a molecule m from m = M/N_A: | 4.4×10^-22 grams | 4.4×10^-25 kg (kilograms) | 266 u (unified atomic mass units) | 266 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 266](../image_source/5b93b4e9c594a891519f61580c378c45.png)
Relative molecular mass M_r from M_r = M_u/M: | 266