Input interpretation
![heptafluorobenzyl iodide | molar mass](../image_source/92758b829cf723357a6775b22d1a1969.png)
heptafluorobenzyl iodide | molar mass
Result
![Find the molar mass, M, for heptafluorobenzyl iodide: 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: C_7F_7I Use the chemical formula, C_7F_7I, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 7 F (fluorine) | 7 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) C (carbon) | 7 | 12.011 F (fluorine) | 7 | 18.998403163 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) C (carbon) | 7 | 12.011 | 7 × 12.011 = 84.077 F (fluorine) | 7 | 18.998403163 | 7 × 18.998403163 = 132.988822141 I (iodine) | 1 | 126.90447 | 1 × 126.90447 = 126.90447 M = 84.077 g/mol + 132.988822141 g/mol + 126.90447 g/mol = 343.970 g/mol](../image_source/2a87193e72ea3c53c865b35a12b8768e.png)
Find the molar mass, M, for heptafluorobenzyl iodide: 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: C_7F_7I Use the chemical formula, C_7F_7I, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 7 F (fluorine) | 7 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) C (carbon) | 7 | 12.011 F (fluorine) | 7 | 18.998403163 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) C (carbon) | 7 | 12.011 | 7 × 12.011 = 84.077 F (fluorine) | 7 | 18.998403163 | 7 × 18.998403163 = 132.988822141 I (iodine) | 1 | 126.90447 | 1 × 126.90447 = 126.90447 M = 84.077 g/mol + 132.988822141 g/mol + 126.90447 g/mol = 343.970 g/mol
Unit conversion
![0.34397 kg/mol (kilograms per mole)](../image_source/cfb22832be67fad01e461658836a09c3.png)
0.34397 kg/mol (kilograms per mole)
Comparisons
![≈ 0.48 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/e4819127ede39a54d51ded9aec92cdcc.png)
≈ 0.48 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 1.8 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/878cd1e1196253dd20f798fefe9a44d8.png)
≈ 1.8 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 5.9 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/9798a5fa34a9bab172326e05f77206e1.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) | 344 u (unified atomic mass units) | 344 Da (daltons)](../image_source/0474d72d91edafdd9f7b9399779763b9.png)
Mass of a molecule m from m = M/N_A: | 5.7×10^-22 grams | 5.7×10^-25 kg (kilograms) | 344 u (unified atomic mass units) | 344 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 344](../image_source/52651124768a223ce932c83a17971567.png)
Relative molecular mass M_r from M_r = M_u/M: | 344