Input interpretation
![silicon monoxide | molar mass](../image_source/53437c5af721495dd273aa290f2694eb.png)
silicon monoxide | molar mass
Result
![Find the molar mass, M, for silicon 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: SiO Use the chemical formula to count the number of atoms, N_i, for each element: | N_i O (oxygen) | 1 Si (silicon) | 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) O (oxygen) | 1 | 15.999 Si (silicon) | 1 | 28.085 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) O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 15.999 g/mol + 28.085 g/mol = 44.084 g/mol](../image_source/971d93b41e690936816be40cdc48a3a7.png)
Find the molar mass, M, for silicon 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: SiO Use the chemical formula to count the number of atoms, N_i, for each element: | N_i O (oxygen) | 1 Si (silicon) | 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) O (oxygen) | 1 | 15.999 Si (silicon) | 1 | 28.085 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) O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 Si (silicon) | 1 | 28.085 | 1 × 28.085 = 28.085 M = 15.999 g/mol + 28.085 g/mol = 44.084 g/mol
Unit conversion
![0.044084 kg/mol (kilograms per mole)](../image_source/a65c013db281b3bf64931127767e8fe3.png)
0.044084 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.061 ≈ 1/16 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/aa77011b3597b5870afe330c3e1511d9.png)
≈ ( 0.061 ≈ 1/16 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ ( 0.23 ≈ 1/4 ) × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/b613b467a86cc88fb0b60fa1f3f5cd14.png)
≈ ( 0.23 ≈ 1/4 ) × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 0.75 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/0bad1e75b674588d55ffb98b629cce08.png)
≈ 0.75 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 7.3×10^-23 grams | 7.3×10^-26 kg (kilograms) | 44 u (unified atomic mass units) | 44 Da (daltons)](../image_source/4d737e5772fa7435e45d1ac0e748a603.png)
Mass of a molecule m from m = M/N_A: | 7.3×10^-23 grams | 7.3×10^-26 kg (kilograms) | 44 u (unified atomic mass units) | 44 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 44](../image_source/cdb92fe251ab99aa576df157b3bd4a44.png)
Relative molecular mass M_r from M_r = M_u/M: | 44