Input interpretation
![cesium dichloroiodide | molar mass](../image_source/6b4bda93065f3891fc9d1504171e015c.png)
cesium dichloroiodide | molar mass
Result
![Find the molar mass, M, for cesium dichloroiodide: 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: Cl_2CsI Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 2 Cs (cesium) | 1 I (iodine) | 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) Cl (chlorine) | 2 | 35.45 Cs (cesium) | 1 | 132.90545196 I (iodine) | 1 | 126.90447 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) Cl (chlorine) | 2 | 35.45 | 2 × 35.45 = 70.90 Cs (cesium) | 1 | 132.90545196 | 1 × 132.90545196 = 132.90545196 I (iodine) | 1 | 126.90447 | 1 × 126.90447 = 126.90447 M = 70.90 g/mol + 132.90545196 g/mol + 126.90447 g/mol = 330.71 g/mol](../image_source/8c70b7813cb2b2dd264920c26cebafbf.png)
Find the molar mass, M, for cesium dichloroiodide: 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: Cl_2CsI Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Cl (chlorine) | 2 Cs (cesium) | 1 I (iodine) | 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) Cl (chlorine) | 2 | 35.45 Cs (cesium) | 1 | 132.90545196 I (iodine) | 1 | 126.90447 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) Cl (chlorine) | 2 | 35.45 | 2 × 35.45 = 70.90 Cs (cesium) | 1 | 132.90545196 | 1 × 132.90545196 = 132.90545196 I (iodine) | 1 | 126.90447 | 1 × 126.90447 = 126.90447 M = 70.90 g/mol + 132.90545196 g/mol + 126.90447 g/mol = 330.71 g/mol
Unit conversion
![0.33071 kg/mol (kilograms per mole)](../image_source/3dcea4e6e99a560c9cc6a6072c531e34.png)
0.33071 kg/mol (kilograms per mole)
Comparisons
![≈ 0.46 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/705109d654dffc2679b2cc3d54720cc0.png)
≈ 0.46 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.7 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/9e3ad6bb6933ce9c7812aab2b54b5499.png)
≈ 1.7 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 5.7 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/4c3a60383114cafbb4989a12659136c7.png)
≈ 5.7 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 5.5×10^-22 grams | 5.5×10^-25 kg (kilograms) | 331 u (unified atomic mass units) | 331 Da (daltons)](../image_source/78562b1ee31ec105393daa08922c0964.png)
Mass of a molecule m from m = M/N_A: | 5.5×10^-22 grams | 5.5×10^-25 kg (kilograms) | 331 u (unified atomic mass units) | 331 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 331](../image_source/c348c253f4f48c36a3f3fc3576c42b66.png)
Relative molecular mass M_r from M_r = M_u/M: | 331