Input interpretation
![enflurane | molar mass](../image_source/eca514bd7a872ae3204cfb31a748acd9.png)
enflurane | molar mass
Result
![Find the molar mass, M, for enflurane: 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_3H_2ClF_5O Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 Cl (chlorine) | 1 F (fluorine) | 5 H (hydrogen) | 2 O (oxygen) | 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) | 3 | 12.011 Cl (chlorine) | 1 | 35.45 F (fluorine) | 5 | 18.998403163 H (hydrogen) | 2 | 1.008 O (oxygen) | 1 | 15.999 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) | 3 | 12.011 | 3 × 12.011 = 36.033 Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 F (fluorine) | 5 | 18.998403163 | 5 × 18.998403163 = 94.992015815 H (hydrogen) | 2 | 1.008 | 2 × 1.008 = 2.016 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 36.033 g/mol + 35.45 g/mol + 94.992015815 g/mol + 2.016 g/mol + 15.999 g/mol = 184.49 g/mol](../image_source/2c54da6ae811b8f369b024ca5f81225f.png)
Find the molar mass, M, for enflurane: 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_3H_2ClF_5O Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 Cl (chlorine) | 1 F (fluorine) | 5 H (hydrogen) | 2 O (oxygen) | 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) | 3 | 12.011 Cl (chlorine) | 1 | 35.45 F (fluorine) | 5 | 18.998403163 H (hydrogen) | 2 | 1.008 O (oxygen) | 1 | 15.999 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) | 3 | 12.011 | 3 × 12.011 = 36.033 Cl (chlorine) | 1 | 35.45 | 1 × 35.45 = 35.45 F (fluorine) | 5 | 18.998403163 | 5 × 18.998403163 = 94.992015815 H (hydrogen) | 2 | 1.008 | 2 × 1.008 = 2.016 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 36.033 g/mol + 35.45 g/mol + 94.992015815 g/mol + 2.016 g/mol + 15.999 g/mol = 184.49 g/mol
Unit conversion
![0.18449 kg/mol (kilograms per mole)](../image_source/f649fd65d9fb9cf1cb7c24a47083f2a4.png)
0.18449 kg/mol (kilograms per mole)
Comparisons
![≈ 0.26 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/0fbd41ed266038089dcca2c99f3f04d8.png)
≈ 0.26 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.95 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/149224e5ef73301b753af66dab2a1ede.png)
≈ 0.95 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 3.2 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/072bf00fa4d3a56d0851bf1d80d3ebe1.png)
≈ 3.2 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 3.1×10^-22 grams | 3.1×10^-25 kg (kilograms) | 184 u (unified atomic mass units) | 184 Da (daltons)](../image_source/71dbfdf0543f636889dabf67ca681a9d.png)
Mass of a molecule m from m = M/N_A: | 3.1×10^-22 grams | 3.1×10^-25 kg (kilograms) | 184 u (unified atomic mass units) | 184 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 184](../image_source/12b70f9ae52be11a83803e9609296c1b.png)
Relative molecular mass M_r from M_r = M_u/M: | 184