Input interpretation
![sodium bromate | molar mass](../image_source/9ed1547cbaf81431dc3674e644d01b8d.png)
sodium bromate | molar mass
Result
![Find the molar mass, M, for sodium bromate: 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: NaBrO_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Br (bromine) | 1 Na (sodium) | 1 O (oxygen) | 3 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) Br (bromine) | 1 | 79.904 Na (sodium) | 1 | 22.98976928 O (oxygen) | 3 | 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) Br (bromine) | 1 | 79.904 | 1 × 79.904 = 79.904 Na (sodium) | 1 | 22.98976928 | 1 × 22.98976928 = 22.98976928 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 79.904 g/mol + 22.98976928 g/mol + 47.997 g/mol = 150.891 g/mol](../image_source/fc1e2e5793644cde10ece87a1a9009b5.png)
Find the molar mass, M, for sodium bromate: 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: NaBrO_3 Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Br (bromine) | 1 Na (sodium) | 1 O (oxygen) | 3 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) Br (bromine) | 1 | 79.904 Na (sodium) | 1 | 22.98976928 O (oxygen) | 3 | 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) Br (bromine) | 1 | 79.904 | 1 × 79.904 = 79.904 Na (sodium) | 1 | 22.98976928 | 1 × 22.98976928 = 22.98976928 O (oxygen) | 3 | 15.999 | 3 × 15.999 = 47.997 M = 79.904 g/mol + 22.98976928 g/mol + 47.997 g/mol = 150.891 g/mol
Unit conversion
![0.15089 kg/mol (kilograms per mole)](../image_source/98ad2eeb1305e96203b383a61db53456.png)
0.15089 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.21 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/ec4a3923455a5cb0822f2aff67c8b253.png)
≈ ( 0.21 ≈ 1/5 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.78 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/b86ab9577c915a1110a52a98f745ee4d.png)
≈ 0.78 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 2.6 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/3cdd99ab6cdac2c5a0f1314d30bbdaeb.png)
≈ 2.6 × molar mass of sodium chloride ( ≈ 58 g/mol )
Corresponding quantities
![Mass of a molecule m from m = M/N_A: | 2.5×10^-22 grams | 2.5×10^-25 kg (kilograms) | 151 u (unified atomic mass units) | 151 Da (daltons)](../image_source/43ce4df01f23d97fa7fbcb52eb9a81d6.png)
Mass of a molecule m from m = M/N_A: | 2.5×10^-22 grams | 2.5×10^-25 kg (kilograms) | 151 u (unified atomic mass units) | 151 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 151](../image_source/26a447f79516f8734e6bec0949b7e3d2.png)
Relative molecular mass M_r from M_r = M_u/M: | 151