Input interpretation
![silver telluride | molar mass](../image_source/b4dbad0ca854e68498fcbb8ca0cb5075.png)
silver telluride | molar mass
Result
![Find the molar mass, M, for silver telluride: 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_2Te Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Ag (silver) | 2 Te (tellurium) | 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) Ag (silver) | 2 | 107.8682 Te (tellurium) | 1 | 127.60 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 Te (tellurium) | 1 | 127.60 | 1 × 127.60 = 127.60 M = 215.7364 g/mol + 127.60 g/mol = 343.34 g/mol](../image_source/ac19547279f4234a2dafcbffd066094a.png)
Find the molar mass, M, for silver telluride: 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_2Te Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Ag (silver) | 2 Te (tellurium) | 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) Ag (silver) | 2 | 107.8682 Te (tellurium) | 1 | 127.60 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 Te (tellurium) | 1 | 127.60 | 1 × 127.60 = 127.60 M = 215.7364 g/mol + 127.60 g/mol = 343.34 g/mol
Unit conversion
![0.34334 kg/mol (kilograms per mole)](../image_source/68b2a054a13d963eb053cd0b66337990.png)
0.34334 kg/mol (kilograms per mole)
Comparisons
![≈ 0.48 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/7922110b8b88c0cf291d0034226ad254.png)
≈ 0.48 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.8 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/edb55ecbad6d7c451f49e183f4f767eb.png)
≈ 1.8 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 5.9 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/18a4787311fad8a70cc31bd44179e1dc.png)
≈ 5.9 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 5.7×10^-22 grams | 5.7×10^-25 kg (kilograms) | 343 u (unified atomic mass units) | 343 Da (daltons)](../image_source/9c75d2240c0597e7703aca8b250ba54e.png)
Mass of a molecule m from m = M/N_A: | 5.7×10^-22 grams | 5.7×10^-25 kg (kilograms) | 343 u (unified atomic mass units) | 343 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 343](../image_source/b2df49c844c19e95cac38b72645263f0.png)
Relative molecular mass M_r from M_r = M_u/M: | 343