Input interpretation
![silver(I) acetylide | molar mass](../image_source/7e0c5836b529f2527e755844a748b650.png)
silver(I) acetylide | molar mass
Result
![Find the molar 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 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 g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) 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 molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) Ag (silver) | 2 | 107.8682 | 2 × 107.8682 = 215.7364 C (carbon) | 2 | 12.011 | 2 × 12.011 = 24.022 M = 215.7364 g/mol + 24.022 g/mol = 239.758 g/mol](../image_source/2bebb5182e2e5f8ff0d354a0f9b803b5.png)
Find the molar 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 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 g·mol^(-1) for each element in the periodic table: | N_i | m_i/g·mol^(-1) 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 molar mass, M: Answer: | | | N_i | m_i/g·mol^(-1) | mass/g·mol^(-1) Ag (silver) | 2 | 107.8682 | 2 × 107.8682 = 215.7364 C (carbon) | 2 | 12.011 | 2 × 12.011 = 24.022 M = 215.7364 g/mol + 24.022 g/mol = 239.758 g/mol
Unit conversion
![0.239758 kg/mol (kilograms per mole)](../image_source/985844ec0b0401a828eb090b2f3b5ec3.png)
0.239758 kg/mol (kilograms per mole)
Comparisons
![≈ 0.33 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/af46fa26da7d1745e603c394ece9b981.png)
≈ 0.33 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.2 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/cf0a71c895f2a67f98dea2d7cd08e655.png)
≈ 1.2 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 4.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/510057bdbe236b0ac91f4266368ecb4c.png)
≈ 4.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 4×10^-22 grams | 4×10^-25 kg (kilograms) | 240 u (unified atomic mass units) | 240 Da (daltons)](../image_source/b1e9da6382f373694560c6a611be02a0.png)
Mass of a molecule m from m = M/N_A: | 4×10^-22 grams | 4×10^-25 kg (kilograms) | 240 u (unified atomic mass units) | 240 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 240](../image_source/4a162423ff219511b1bd91ec0a50f625.png)
Relative molecular mass M_r from M_r = M_u/M: | 240