Input interpretation
![carbon monoxide | molecular mass](../image_source/1ade0a155782a251d37cab812afb0575.png)
carbon monoxide | molecular mass
Result
![Find the molecular mass, m, for carbon monoxide: 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: CO Use the chemical formula, CO, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 O (oxygen) | 1 Look up the atomic mass, m_i, in unified atomic mass units, u, for each element in the periodic table: | N_i | m_i/u C (carbon) | 1 | 12.011 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 molecular mass, m: Answer: | | | N_i | m_i/u | mass/u C (carbon) | 1 | 12.011 | 1 × 12.011 = 12.011 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 m = 12.011 u + 15.999 u = 28.010 u](../image_source/0fae5d622631913060ffc8c48f196cfc.png)
Find the molecular mass, m, for carbon monoxide: 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: CO Use the chemical formula, CO, to count the number of atoms, N_i, for each element: | N_i C (carbon) | 1 O (oxygen) | 1 Look up the atomic mass, m_i, in unified atomic mass units, u, for each element in the periodic table: | N_i | m_i/u C (carbon) | 1 | 12.011 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 molecular mass, m: Answer: | | | N_i | m_i/u | mass/u C (carbon) | 1 | 12.011 | 1 × 12.011 = 12.011 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 m = 12.011 u + 15.999 u = 28.010 u
Unit conversions
![28.01 Da (daltons)](../image_source/a1075f9c794ecf4af290bf895157e30b.png)
28.01 Da (daltons)
![0.02801 kDa (kilodaltons)](../image_source/9697ed0e42d302b566f37c1e5f1abdaf.png)
0.02801 kDa (kilodaltons)
![4.6512×10^-23 grams](../image_source/38bfcfc0d7b6dc4b571aa31d0793236d.png)
4.6512×10^-23 grams
![4.6512×10^-26 kg (kilograms)](../image_source/1efaff3670533d9c51bfeae23429bf47.png)
4.6512×10^-26 kg (kilograms)
![28.011 chemical atomic mass units (unit officially deprecated)](../image_source/a6c9f98092c1319a689efe704aabd455.png)
28.011 chemical atomic mass units (unit officially deprecated)
![28.019 physical atomic mass units (unit officially deprecated)](../image_source/ca18f57e76d72a0e826c216e8d9de249.png)
28.019 physical atomic mass units (unit officially deprecated)
Comparisons as mass of molecule
![≈ ( 0.14 ≈ 1/7 ) × molecular mass of caffeine ( ≈ 194 u )](../image_source/40f83ecd3d557256370ff653d83c57ce.png)
≈ ( 0.14 ≈ 1/7 ) × molecular mass of caffeine ( ≈ 194 u )
![≈ 0.48 × molecular mass of sodium chloride ( ≈ 58 u )](../image_source/60154ce81f18758153cae697bffe800e.png)
≈ 0.48 × molecular mass of sodium chloride ( ≈ 58 u )
![≈ 1.6 × molecular mass of water ( ≈ 18 u )](../image_source/3e40a2caae87abdba8aa5855c387f78b.png)
≈ 1.6 × molecular mass of water ( ≈ 18 u )
Corresponding quantities
![Relative atomic mass A_r from A_r = m_aN_A/M_u: | 28](../image_source/1e57fc74336b978e93c7d0b1c638925f.png)
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 28
![Molar mass M from M = m_aN_A: | 28 g/mol (grams per mole)](../image_source/3abfee12560510fe0174aca579b98ddb.png)
Molar mass M from M = m_aN_A: | 28 g/mol (grams per mole)
![Relative molecular mass M_r from M_r = m_mN_A/M_u: | 28](../image_source/99015d570bc048cee1c2e1228f97d735.png)
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 28
![Molar mass M from M = m_mN_A: | 28 g/mol (grams per mole)](../image_source/7f84ee48a3fff540a9035aa94935f50d.png)
Molar mass M from M = m_mN_A: | 28 g/mol (grams per mole)