Input interpretation
![lead(II) salicylate | molar mass](../image_source/54cbd6599003cdaf529a428123fb767d.png)
lead(II) salicylate | molar mass
Result
![Find the molar mass, M, for lead(II) salicylate: 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: Pb(OCOC_6H_4OH)_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 14 H (hydrogen) | 10 O (oxygen) | 6 Pb (lead) | 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) | 14 | 12.011 H (hydrogen) | 10 | 1.008 O (oxygen) | 6 | 15.999 Pb (lead) | 1 | 207.2 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) | 14 | 12.011 | 14 × 12.011 = 168.154 H (hydrogen) | 10 | 1.008 | 10 × 1.008 = 10.080 O (oxygen) | 6 | 15.999 | 6 × 15.999 = 95.994 Pb (lead) | 1 | 207.2 | 1 × 207.2 = 207.2 M = 168.154 g/mol + 10.080 g/mol + 95.994 g/mol + 207.2 g/mol = 481.4 g/mol](../image_source/991409d9cf2766eafd32ef48fed22d86.png)
Find the molar mass, M, for lead(II) salicylate: 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: Pb(OCOC_6H_4OH)_2 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 14 H (hydrogen) | 10 O (oxygen) | 6 Pb (lead) | 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) | 14 | 12.011 H (hydrogen) | 10 | 1.008 O (oxygen) | 6 | 15.999 Pb (lead) | 1 | 207.2 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) | 14 | 12.011 | 14 × 12.011 = 168.154 H (hydrogen) | 10 | 1.008 | 10 × 1.008 = 10.080 O (oxygen) | 6 | 15.999 | 6 × 15.999 = 95.994 Pb (lead) | 1 | 207.2 | 1 × 207.2 = 207.2 M = 168.154 g/mol + 10.080 g/mol + 95.994 g/mol + 207.2 g/mol = 481.4 g/mol
Unit conversion
![0.4814 kg/mol (kilograms per mole)](../image_source/c40b174cc39dc9046cabb3f23cf0fe37.png)
0.4814 kg/mol (kilograms per mole)
Comparisons
![≈ 0.67 × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/14edace2f94324264273f27cfe0a41cc.png)
≈ 0.67 × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 2.5 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/3de0f6dc8652618c8591bfa826ec9a81.png)
≈ 2.5 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 8.2 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/5971ca3dd65db79b96b01da50cf9f726.png)
≈ 8.2 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 8×10^-22 grams | 8×10^-25 kg (kilograms) | 481 u (unified atomic mass units) | 481 Da (daltons)](../image_source/ae4b3b483afcf8e10ad766edea176323.png)
Mass of a molecule m from m = M/N_A: | 8×10^-22 grams | 8×10^-25 kg (kilograms) | 481 u (unified atomic mass units) | 481 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 481](../image_source/ebf8bd496505f5eb40c61d0c4045a7a2.png)
Relative molecular mass M_r from M_r = M_u/M: | 481