Input interpretation
![indium(III) fluoride | molar mass](../image_source/4b4acf2077b002215ec2bf375e3fa168.png)
indium(III) fluoride | molar mass
Result
![Find the molar mass, M, for indium(III) fluoride: 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: InF_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 3 In (indium) | 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) F (fluorine) | 3 | 18.998403163 In (indium) | 1 | 114.818 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) F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 In (indium) | 1 | 114.818 | 1 × 114.818 = 114.818 M = 56.995209489 g/mol + 114.818 g/mol = 171.813 g/mol](../image_source/b27bbf0da529f10a1f8f3d0f14b44e08.png)
Find the molar mass, M, for indium(III) fluoride: 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: InF_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 3 In (indium) | 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) F (fluorine) | 3 | 18.998403163 In (indium) | 1 | 114.818 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) F (fluorine) | 3 | 18.998403163 | 3 × 18.998403163 = 56.995209489 In (indium) | 1 | 114.818 | 1 × 114.818 = 114.818 M = 56.995209489 g/mol + 114.818 g/mol = 171.813 g/mol
Unit conversion
![0.171813 kg/mol (kilograms per mole)](../image_source/c54507d9db0c2e96bcd7ef657d965de5.png)
0.171813 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.24 ≈ 1/4 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/fc12fdef81cdd561c77f80eb0af657fd.png)
≈ ( 0.24 ≈ 1/4 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.88 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/84ad09061abb18951713d16f5787c0c5.png)
≈ 0.88 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.9 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/8d575640233115ee9cc7ff7edb1292e8.png)
≈ 2.9 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.9×10^-22 grams | 2.9×10^-25 kg (kilograms) | 172 u (unified atomic mass units) | 172 Da (daltons)](../image_source/9b82f6283ae7e09e127825e3f85a3e05.png)
Mass of a molecule m from m = M/N_A: | 2.9×10^-22 grams | 2.9×10^-25 kg (kilograms) | 172 u (unified atomic mass units) | 172 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 172](../image_source/e2977e336857a95501b53f233d262100.png)
Relative molecular mass M_r from M_r = M_u/M: | 172