Input interpretation
![silver(I) acetylide | molecular mass](../image_source/00debf85550c6941714ec397db430ff1.png)
silver(I) acetylide | molecular mass
Result
![Find the molecular mass, m, for silver(I) acetylide: 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: Ag_2C_2 Use the chemical formula, Ag_2C_2, to count the number of atoms, N_i, for each element: | N_i Ag (silver) | 2 C (carbon) | 2 Look up the atomic mass, m_i, in unified atomic mass units, u, for each element in the periodic table: | N_i | m_i/u Ag (silver) | 2 | 107.8682 C (carbon) | 2 | 12.011 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molecular mass, m: Answer: | | | N_i | m_i/u | mass/u Ag (silver) | 2 | 107.8682 | 2 × 107.8682 = 215.7364 C (carbon) | 2 | 12.011 | 2 × 12.011 = 24.022 m = 215.7364 u + 24.022 u = 239.758 u](../image_source/cdc8103565394e91543bf3900da8795a.png)
Find the molecular mass, m, for silver(I) acetylide: 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: Ag_2C_2 Use the chemical formula, Ag_2C_2, to count the number of atoms, N_i, for each element: | N_i Ag (silver) | 2 C (carbon) | 2 Look up the atomic mass, m_i, in unified atomic mass units, u, for each element in the periodic table: | N_i | m_i/u Ag (silver) | 2 | 107.8682 C (carbon) | 2 | 12.011 Multiply N_i by m_i to compute the mass for each element. Then sum those values to compute the molecular mass, m: Answer: | | | N_i | m_i/u | mass/u Ag (silver) | 2 | 107.8682 | 2 × 107.8682 = 215.7364 C (carbon) | 2 | 12.011 | 2 × 12.011 = 24.022 m = 215.7364 u + 24.022 u = 239.758 u
Unit conversions
![239.758 Da (daltons)](../image_source/3665f75bd89d843bafa973a3d6a17c98.png)
239.758 Da (daltons)
![0.239758 kDa (kilodaltons)](../image_source/d5abdb931ea82934b00767be554861c6.png)
0.239758 kDa (kilodaltons)
![3.98128×10^-22 grams](../image_source/f370460b5db0ad10afbfee44f80a020a.png)
3.98128×10^-22 grams
![3.98128×10^-25 kg (kilograms)](../image_source/e7a52c09ad7595d64aeee08f5e43ba47.png)
3.98128×10^-25 kg (kilograms)
![239.769 chemical atomic mass units (unit officially deprecated)](../image_source/af41bbd4342c217811644e7803338f55.png)
239.769 chemical atomic mass units (unit officially deprecated)
![239.835 physical atomic mass units (unit officially deprecated)](../image_source/c1225cf3f457119a50d3f35d8e733c26.png)
239.835 physical atomic mass units (unit officially deprecated)
Comparisons as mass of molecule
![≈ 0.33 × molecular mass of fullerene ( ≈ 721 u )](../image_source/9a604d99cc7eeab9941373836d914e7b.png)
≈ 0.33 × molecular mass of fullerene ( ≈ 721 u )
![≈ 1.2 × molecular mass of caffeine ( ≈ 194 u )](../image_source/5f947f4bbdd1293fa8fb706133a26ef0.png)
≈ 1.2 × molecular mass of caffeine ( ≈ 194 u )
![≈ 4.1 × molecular mass of sodium chloride ( ≈ 58 u )](../image_source/7ff4df17d1769d376d917f0e9030e3e1.png)
≈ 4.1 × molecular mass of sodium chloride ( ≈ 58 u )
Corresponding quantities
![Relative atomic mass A_r from A_r = m_aN_A/M_u: | 240](../image_source/1ecc603eb53d576a5205173c9ee32839.png)
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 240
![Molar mass M from M = m_aN_A: | 240 g/mol (grams per mole)](../image_source/46328d96a43c9be1c4d85905d1f2e06a.png)
Molar mass M from M = m_aN_A: | 240 g/mol (grams per mole)
![Relative molecular mass M_r from M_r = m_mN_A/M_u: | 240](../image_source/a87b475584c9d6e206b6632cdad25ee7.png)
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 240
![Molar mass M from M = m_mN_A: | 240 g/mol (grams per mole)](../image_source/ba67ec03a8bd093868ba4204c3c3b74f.png)
Molar mass M from M = m_mN_A: | 240 g/mol (grams per mole)