Input interpretation
![acrylamide | molar mass](../image_source/74b3f55792113dababbc32c9a4e0255a.png)
acrylamide | molar mass
Result
![Find the molar mass, M, for acrylamide: 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: CH_2=CHCONH_2 Use the chemical formula, CH_2=CHCONH_2, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 5 N (nitrogen) | 1 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 H (hydrogen) | 5 | 1.008 N (nitrogen) | 1 | 14.007 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 H (hydrogen) | 5 | 1.008 | 5 × 1.008 = 5.040 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 36.033 g/mol + 5.040 g/mol + 14.007 g/mol + 15.999 g/mol = 71.079 g/mol](../image_source/0d0c7ba9e5207f04dbbb8d9d429d1006.png)
Find the molar mass, M, for acrylamide: 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: CH_2=CHCONH_2 Use the chemical formula, CH_2=CHCONH_2, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 5 N (nitrogen) | 1 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 H (hydrogen) | 5 | 1.008 N (nitrogen) | 1 | 14.007 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 H (hydrogen) | 5 | 1.008 | 5 × 1.008 = 5.040 N (nitrogen) | 1 | 14.007 | 1 × 14.007 = 14.007 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 36.033 g/mol + 5.040 g/mol + 14.007 g/mol + 15.999 g/mol = 71.079 g/mol
Unit conversion
![0.07108 kg/mol (kilograms per mole)](../image_source/e8fae558ffd64bef6f75a83b4f53142f.png)
0.07108 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.099 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/9f8c56c2c3fb9b2a6c09218dfb1dda45.png)
≈ ( 0.099 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.37 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/38b66b86acadc4b1d3c3103b70d4d624.png)
≈ 0.37 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.2 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/326c8c6ccc8b2860ae5fc98f63c97365.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) | 71 u (unified atomic mass units) | 71 Da (daltons)](../image_source/4637693e1339799cc9c77aabae44b671.png)
Mass of a molecule m from m = M/N_A: | 1.2×10^-22 grams | 1.2×10^-25 kg (kilograms) | 71 u (unified atomic mass units) | 71 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 71](../image_source/ac2432595a9a67f83185c214dd7ca202.png)
Relative molecular mass M_r from M_r = M_u/M: | 71