Input interpretation
![boron nitride | molar mass](../image_source/ca22e86c8bd6830847a5cebad03019ff.png)
boron nitride | molar mass
Result
![Find the molar mass, M, for boron nitride: 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: BN Use the chemical formula, BN, to count the number of atoms, N_i, for each element: | N_i B (boron) | 1 N (nitrogen) | 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 N (nitrogen) | 1 | 14.007 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 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 10.81 g/mol + 14.007 g/mol = 24.82 g/mol](../image_source/0032bafa7c8295bf107fe6142f302b07.png)
Find the molar mass, M, for boron nitride: 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: BN Use the chemical formula, BN, to count the number of atoms, N_i, for each element: | N_i B (boron) | 1 N (nitrogen) | 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 N (nitrogen) | 1 | 14.007 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 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 10.81 g/mol + 14.007 g/mol = 24.82 g/mol
Unit conversion
![0.02482 kg/mol (kilograms per mole)](../image_source/10f2150940c94df01f59c5d4b8231208.png)
0.02482 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.13 ≈ 1/8 ) × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/4681f9caf811bbb1ff10b99431c9c2b4.png)
≈ ( 0.13 ≈ 1/8 ) × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 0.42 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/abdafc830c05513e84fa89f97f838c0b.png)
≈ 0.42 × molar mass of sodium chloride ( ≈ 58 g/mol )
![≈ 1.4 × molar mass of water ( ≈ 18 g/mol )](../image_source/b39fff28fa11cdd868a86047bd671126.png)
≈ 1.4 × molar mass of water ( ≈ 18 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4.1×10^-23 grams | 4.1×10^-26 kg (kilograms) | 25 u (unified atomic mass units) | 25 Da (daltons)](../image_source/fb2eded906556184b764e6b5bc6b2b3c.png)
Mass of a molecule m from m = M/N_A: | 4.1×10^-23 grams | 4.1×10^-26 kg (kilograms) | 25 u (unified atomic mass units) | 25 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 25](../image_source/a2e0cc0ce7a0777cf02557f012ffb71d.png)
Relative molecular mass M_r from M_r = M_u/M: | 25