Input interpretation
![zinc carbonate | molar mass](../image_source/f7e00777c11d08c185bf9f17ab4452bd.png)
zinc carbonate | molar mass
Result
![Find the molar mass, M, for zinc carbonate: 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: ZnCO_3 Use the chemical formula, ZnCO_3, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 O (oxygen) | 3 Zn (zinc) | 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 O (oxygen) | 3 | 15.999 Zn (zinc) | 1 | 65.38 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 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 Zn (zinc) | 1 | 65.38 | 1 × 65.38 = 65.38 M = 12.011 g/mol + 47.997 g/mol + 65.38 g/mol = 125.39 g/mol](../image_source/21d076e94ba2ad19aa45df86d7826758.png)
Find the molar mass, M, for zinc carbonate: 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: ZnCO_3 Use the chemical formula, ZnCO_3, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 O (oxygen) | 3 Zn (zinc) | 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 O (oxygen) | 3 | 15.999 Zn (zinc) | 1 | 65.38 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 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 Zn (zinc) | 1 | 65.38 | 1 × 65.38 = 65.38 M = 12.011 g/mol + 47.997 g/mol + 65.38 g/mol = 125.39 g/mol
Unit conversion
![0.1254 kg/mol (kilograms per mole)](../image_source/bd9e64fd72df3e5dfe1718d50ea2fb5f.png)
0.1254 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.17 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/33c658a83ec770d4acfbbfef36519e4b.png)
≈ ( 0.17 ≈ 1/6 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.65 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/ecb77ae1090dba9229f00cea40ccc9f5.png)
≈ 0.65 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.1 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/b295ce8a5b1de3a1c4917e60ac94e68b.png)
≈ 2.1 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.1×10^-22 grams | 2.1×10^-25 kg (kilograms) | 125 u (unified atomic mass units) | 125 Da (daltons)](../image_source/0a096ec443de0df4f2dad7e5063d473f.png)
Mass of a molecule m from m = M/N_A: | 2.1×10^-22 grams | 2.1×10^-25 kg (kilograms) | 125 u (unified atomic mass units) | 125 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 125](../image_source/78e633a656b4942717d1aa75e13168fe.png)
Relative molecular mass M_r from M_r = M_u/M: | 125