Input interpretation
![acrolein | molar mass](../image_source/710ac0e3864cd9dd02544c6caf2eb618.png)
acrolein | molar mass
Result
![Find the molar mass, M, for acrolein: 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=CHCHO Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 4 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) | 4 | 1.008 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) | 4 | 1.008 | 4 × 1.008 = 4.032 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 36.033 g/mol + 4.032 g/mol + 15.999 g/mol = 56.064 g/mol](../image_source/d820a555668bd6a0558dd5d659c08938.png)
Find the molar mass, M, for acrolein: 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=CHCHO Use the chemical formula to count the number of atoms, N_i, for each element: | N_i C (carbon) | 3 H (hydrogen) | 4 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) | 4 | 1.008 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) | 4 | 1.008 | 4 × 1.008 = 4.032 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 36.033 g/mol + 4.032 g/mol + 15.999 g/mol = 56.064 g/mol
Unit conversion
![0.056064 kg/mol (kilograms per mole)](../image_source/3301d1b16a2119a26d904f68702a1b94.png)
0.056064 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.078 ≈ 1/13 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/420aeacde1aa327b5eb97d2b952cf869.png)
≈ ( 0.078 ≈ 1/13 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.29 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/e7b3fad13c9d8a7a6f8906ee8ab0cc54.png)
≈ 0.29 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 0.96 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/fcaf9a3ae7486e3ca89d292d90ae439a.png)
≈ 0.96 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 9.3×10^-23 grams | 9.3×10^-26 kg (kilograms) | 56 u (unified atomic mass units) | 56 Da (daltons)](../image_source/fbbf6a4d8bfb84935384b0fa2e353f50.png)
Mass of a molecule m from m = M/N_A: | 9.3×10^-23 grams | 9.3×10^-26 kg (kilograms) | 56 u (unified atomic mass units) | 56 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 56](../image_source/815a7784777faec74a799688b95c979c.png)
Relative molecular mass M_r from M_r = M_u/M: | 56