Input interpretation
![nickel monoxide | molar mass](../image_source/9c70850d8bc66d352cdecd54154dc36e.png)
nickel monoxide | molar mass
Result
![Find the molar mass, M, for nickel 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: NiO Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Ni (nickel) | 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) Ni (nickel) | 1 | 58.6934 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) Ni (nickel) | 1 | 58.6934 | 1 × 58.6934 = 58.6934 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 58.6934 g/mol + 15.999 g/mol = 74.692 g/mol](../image_source/1d38144a902acf19638a422b6a26723b.png)
Find the molar mass, M, for nickel 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: NiO Use the chemical formula to count the number of atoms, N_i, for each element: | N_i Ni (nickel) | 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) Ni (nickel) | 1 | 58.6934 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) Ni (nickel) | 1 | 58.6934 | 1 × 58.6934 = 58.6934 O (oxygen) | 1 | 15.999 | 1 × 15.999 = 15.999 M = 58.6934 g/mol + 15.999 g/mol = 74.692 g/mol
Unit conversion
![0.074692 kg/mol (kilograms per mole)](../image_source/dd8e063b2dd274328bde7a170ac9827e.png)
0.074692 kg/mol (kilograms per mole)
Comparisons
![≈ ( 0.1 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )](../image_source/a9c69d8561ebef0bdd179180ac5119de.png)
≈ ( 0.1 ≈ 1/10 ) × molar mass of fullerene ( ≈ 721 g/mol )
![≈ 0.38 × molar mass of caffeine ( ≈ 194 g/mol )](../image_source/5fdd15574a4ef50fa9243b9182b5de4f.png)
≈ 0.38 × molar mass of caffeine ( ≈ 194 g/mol )
![≈ 1.3 × molar mass of sodium chloride ( ≈ 58 g/mol )](../image_source/991c4f259a323b55d4503ab658711a12.png)
≈ 1.3 × 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) | 75 u (unified atomic mass units) | 75 Da (daltons)](../image_source/d5b42704c31b4ffca66cf32ad6eac2d7.png)
Mass of a molecule m from m = M/N_A: | 1.2×10^-22 grams | 1.2×10^-25 kg (kilograms) | 75 u (unified atomic mass units) | 75 Da (daltons)
![Relative molecular mass M_r from M_r = M_u/M: | 75](../image_source/d37cbe92a15d1fb93a365a48e8c21929.png)
Relative molecular mass M_r from M_r = M_u/M: | 75