Input interpretation
![yttrium carbide | molar mass](../image_source/3a15561db988408591ab4f79e2c8bb9b.png)
yttrium carbide | molar mass
Result
![Find the molar mass, M, for yttrium carbide: 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: YC_2 Use the chemical formula, YC_2, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 Y (yttrium) | 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) | 2 | 12.011 Y (yttrium) | 1 | 88.90584 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) | 2 | 12.011 | 2 × 12.011 = 24.022 Y (yttrium) | 1 | 88.90584 | 1 × 88.90584 = 88.90584 M = 24.022 g/mol + 88.90584 g/mol = 112.928 g/mol](../image_source/6fded385b29a273d15a4b9c6ccc75907.png)
Find the molar mass, M, for yttrium carbide: 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: YC_2 Use the chemical formula, YC_2, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 2 Y (yttrium) | 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) | 2 | 12.011 Y (yttrium) | 1 | 88.90584 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) | 2 | 12.011 | 2 × 12.011 = 24.022 Y (yttrium) | 1 | 88.90584 | 1 × 88.90584 = 88.90584 M = 24.022 g/mol + 88.90584 g/mol = 112.928 g/mol
Unit conversion
![0.112928 kg/mol (kilograms per mole)](../image_source/1e1e330256824dc3f22d8eb5d930fbb1.png)
0.112928 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.16 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/514e7e89d4c2b7e932c51510ecc6a838.png)
≈ ( 0.16 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.58 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/9815bccbd5086a935e9ad140976a744f.png)
≈ 0.58 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.9 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/2bdacb6e72bba0fadb3595c1b02c1fb5.png)
≈ 1.9 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 1.9×10^-22 grams | 1.9×10^-25 kg (kilograms) | 113 u (unified atomic mass units) | 113 Da (daltons)](../image_source/44f93bb635548d5c6e97161dfe2c3841.png)
Mass of a molecule m from m = M/N_A: | 1.9×10^-22 grams | 1.9×10^-25 kg (kilograms) | 113 u (unified atomic mass units) | 113 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 113](../image_source/13778d4bcb470bac074452f9a1d02a9b.png)
Relative molecular mass M_r from M_r = M_u/M: | 113