Input interpretation
![2-methylquinoline | molar mass](../image_source/3f38129cca87ec33df7078cf08e3afa0.png)
2-methylquinoline | molar mass
Result
![Find the molar mass, M, for 2-methylquinoline: 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: C_10H_9N Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 10 H (hydrogen) | 9 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) C (carbon) | 10 | 12.011 H (hydrogen) | 9 | 1.008 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) C (carbon) | 10 | 12.011 | 10 × 12.011 = 120.110 H (hydrogen) | 9 | 1.008 | 9 × 1.008 = 9.072 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 120.110 g/mol + 9.072 g/mol + 14.007 g/mol = 143.189 g/mol](../image_source/0b2d0579bf3616795b13f67e61ab5ff3.png)
Find the molar mass, M, for 2-methylquinoline: 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: C_10H_9N Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 10 H (hydrogen) | 9 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) C (carbon) | 10 | 12.011 H (hydrogen) | 9 | 1.008 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) C (carbon) | 10 | 12.011 | 10 × 12.011 = 120.110 H (hydrogen) | 9 | 1.008 | 9 × 1.008 = 9.072 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 M = 120.110 g/mol + 9.072 g/mol + 14.007 g/mol = 143.189 g/mol
Unit conversion
![0.14319 kg/mol (kilograms per mole)](../image_source/4d0bd89ca8de2a957c9dcd117125e20f.png)
0.14319 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.2 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/5de746d23645aa53e3642fe4ff0131f5.png)
≈ ( 0.2 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.74 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/672e569aa0cb396abd4be71d84bf5f6a.png)
≈ 0.74 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.5 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/653b57add4548b463f58cb0eb985bfb7.png)
≈ 2.5 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.4×10^-22 grams | 2.4×10^-25 kg (kilograms) | 143 u (unified atomic mass units) | 143 Da (daltons)](../image_source/997f19c7477fc12e8bf5972cb275aebd.png)
Mass of a molecule m from m = M/N_A: | 2.4×10^-22 grams | 2.4×10^-25 kg (kilograms) | 143 u (unified atomic mass units) | 143 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 143](../image_source/6d8dbeb95ca33e925db6ad4466a2154c.png)
Relative molecular mass M_r from M_r = M_u/M: | 143