Input interpretation
![niobium boride | molar mass](../image_source/73bd275399464a8bc4afe1cb3649fc5e.png)
niobium boride | molar mass
Result
![Find the molar mass, M, for niobium boride: 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: NbB Use the chemical formula to count the number of atoms, N_i, for each element: | N_i B (boron) | 1 Nb (niobium) | 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) B (boron) | 1 | 10.81 Nb (niobium) | 1 | 92.90637 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) B (boron) | 1 | 10.81 | 1 × 10.81 = 10.81 Nb (niobium) | 1 | 92.90637 | 1 × 92.90637 = 92.90637 M = 10.81 g/mol + 92.90637 g/mol = 103.72 g/mol](../image_source/267df4a488b7fc844b2682b639a24053.png)
Find the molar mass, M, for niobium boride: 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: NbB Use the chemical formula to count the number of atoms, N_i, for each element: | N_i B (boron) | 1 Nb (niobium) | 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) B (boron) | 1 | 10.81 Nb (niobium) | 1 | 92.90637 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) B (boron) | 1 | 10.81 | 1 × 10.81 = 10.81 Nb (niobium) | 1 | 92.90637 | 1 × 92.90637 = 92.90637 M = 10.81 g/mol + 92.90637 g/mol = 103.72 g/mol
Unit conversion
![0.10372 kg/mol (kilograms per mole)](../image_source/73468ce2c7688b9c3ca7a6846c9c2d33.png)
0.10372 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.14 ≈ 1/7 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/b04c77947f830e6149b41f9547ba473d.png)
≈ ( 0.14 ≈ 1/7 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.53 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/71644020076a19e9a6a0f6f069342fe3.png)
≈ 0.53 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.8 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/e7fd96632ad7c0c1b5424df4e10634d3.png)
≈ 1.8 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 1.7×10^-22 grams | 1.7×10^-25 kg (kilograms) | 104 u (unified atomic mass units) | 104 Da (daltons)](../image_source/1f1be46f60ae25328ca74fdea47cae1b.png)
Mass of a molecule m from m = M/N_A: | 1.7×10^-22 grams | 1.7×10^-25 kg (kilograms) | 104 u (unified atomic mass units) | 104 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 104](../image_source/e5cd7578aad2abd2d76693b7fc3b33cf.png)
Relative molecular mass M_r from M_r = M_u/M: | 104