Input interpretation
![isopropyllithium | molar mass](../image_source/7488cc4040561c6242f116dbde185c04.png)
isopropyllithium | molar mass
Result
![Find the molar mass, M, for isopropyllithium: 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: (CH_3)_2CHLi Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 7 Li (lithium) | 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) | 3 | 12.011 H (hydrogen) | 7 | 1.008 Li (lithium) | 1 | 6.94 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) | 3 | 12.011 | 3 × 12.011 = 36.033 H (hydrogen) | 7 | 1.008 | 7 × 1.008 = 7.056 Li (lithium) | 1 | 6.94 | 1 × 6.94 = 6.94 M = 36.033 g/mol + 7.056 g/mol + 6.94 g/mol = 50.03 g/mol](../image_source/238427d9481433f895eda9eea53f6e58.png)
Find the molar mass, M, for isopropyllithium: 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: (CH_3)_2CHLi Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 7 Li (lithium) | 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) | 3 | 12.011 H (hydrogen) | 7 | 1.008 Li (lithium) | 1 | 6.94 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) | 3 | 12.011 | 3 × 12.011 = 36.033 H (hydrogen) | 7 | 1.008 | 7 × 1.008 = 7.056 Li (lithium) | 1 | 6.94 | 1 × 6.94 = 6.94 M = 36.033 g/mol + 7.056 g/mol + 6.94 g/mol = 50.03 g/mol
Unit conversion
![0.05003 kg/mol (kilograms per mole)](../image_source/e674e7e612ea14124fd23e654842d412.png)
0.05003 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.069 ≈ 1/14 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/98ee3f339265e5f461d5259f48f7d05d.png)
≈ ( 0.069 ≈ 1/14 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.26 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/ac25dd49fae00bc83333fb5869867022.png)
≈ 0.26 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 0.86 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/a25af0b48a608cea592d78baebd9ff08.png)
≈ 0.86 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 8.3×10^-23 grams | 8.3×10^-26 kg (kilograms) | 50 u (unified atomic mass units) | 50 Da (daltons)](../image_source/370f81ad6c20040dc8d35d5f87e0d014.png)
Mass of a molecule m from m = M/N_A: | 8.3×10^-23 grams | 8.3×10^-26 kg (kilograms) | 50 u (unified atomic mass units) | 50 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 50](../image_source/9a39f1c7cccd16c68da258608b04e4e8.png)
Relative molecular mass M_r from M_r = M_u/M: | 50