Input interpretation
![fluoroform | molar mass](../image_source/5eaa464d3d64d2444ac89e107926b0de.png)
fluoroform | molar mass
Result
![Find the molar mass, M, for fluoroform: 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: CHF_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 F (fluorine) | 3 H (hydrogen) | 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) | 1 | 12.011 F (fluorine) | 3 | 18.998403163 H (hydrogen) | 1 | 1.008 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) | 1 | 12.011 | 1 × 12.011 = 12.011 F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 H (hydrogen) | 1 | 1.008 | 1 × 1.008 = 1.008 M = 12.011 g/mol + 56.995209489 g/mol + 1.008 g/mol = 70.014 g/mol](../image_source/61d831fb6d03af440be693b12269bf8e.png)
Find the molar mass, M, for fluoroform: 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: CHF_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 F (fluorine) | 3 H (hydrogen) | 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) | 1 | 12.011 F (fluorine) | 3 | 18.998403163 H (hydrogen) | 1 | 1.008 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) | 1 | 12.011 | 1 × 12.011 = 12.011 F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 H (hydrogen) | 1 | 1.008 | 1 × 1.008 = 1.008 M = 12.011 g/mol + 56.995209489 g/mol + 1.008 g/mol = 70.014 g/mol
Unit conversion
![0.070014 kg/mol (kilograms per mole)](../image_source/989bee1a2d15e43f6bfb9e47d87fc241.png)
0.070014 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.097 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/a743f7cfdbec9a94595fee2b2f0e82bc.png)
≈ ( 0.097 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.36 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/7fb1b1f9ba9069ffb7ca003f07b22fa4.png)
≈ 0.36 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.2 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/71af2e5d85ea6c0870cc04c64f6015a4.png)
≈ 1.2 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 1.2×10^-22 grams | 1.2×10^-25 kg (kilograms) | 70 u (unified atomic mass units) | 70 Da (daltons)](../image_source/57ba425fd0459c898e2064f7f43eaf20.png)
Mass of a molecule m from m = M/N_A: | 1.2×10^-22 grams | 1.2×10^-25 kg (kilograms) | 70 u (unified atomic mass units) | 70 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 70](../image_source/bb2ea8313636e684c3e2ae47ea8080cf.png)
Relative molecular mass M_r from M_r = M_u/M: | 70