Input interpretation
![indium arsenide | molecular mass](../image_source/8b8c45e7adf0319d9042e8b5f592fe45.png)
indium arsenide | molecular mass
Result
![Find the molecular mass, m, for indium arsenide: 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: AsIn Use the chemical formula to count the number of atoms, N_i, for each element: | N_i As (arsenic) | 1 In (indium) | 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 As (arsenic) | 1 | 74.921595 In (indium) | 1 | 114.818 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 As (arsenic) | 1 | 74.921595 | 1 × 74.921595 = 74.921595 In (indium) | 1 | 114.818 | 1 × 114.818 = 114.818 m = 74.921595 u + 114.818 u = 189.740 u](../image_source/dc608b69a47242bda7622198898d4914.png)
Find the molecular mass, m, for indium arsenide: 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: AsIn Use the chemical formula to count the number of atoms, N_i, for each element: | N_i As (arsenic) | 1 In (indium) | 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 As (arsenic) | 1 | 74.921595 In (indium) | 1 | 114.818 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 As (arsenic) | 1 | 74.921595 | 1 × 74.921595 = 74.921595 In (indium) | 1 | 114.818 | 1 × 114.818 = 114.818 m = 74.921595 u + 114.818 u = 189.740 u
Unit conversions
![189.74 Da (daltons)](../image_source/37069f2d7719dc9b3078ab20a72046b1.png)
189.74 Da (daltons)
![0.18974 kDa (kilodaltons)](../image_source/84e5f4aae251eace0ff5675c9a86dc90.png)
0.18974 kDa (kilodaltons)
![3.1507×10^-22 grams](../image_source/af7fc9b05ea4444dabf55aac4f221766.png)
3.1507×10^-22 grams
![3.1507×10^-25 kg (kilograms)](../image_source/9f1fe14c97f49727a7a4998b5ea7c6ef.png)
3.1507×10^-25 kg (kilograms)
![189.748 chemical atomic mass units (unit officially deprecated)](../image_source/19f0c132b0dca00a388cd67c97a6b6c7.png)
189.748 chemical atomic mass units (unit officially deprecated)
![189.8 physical atomic mass units (unit officially deprecated)](../image_source/b5fe45377ab8476a2c8aebedc561504d.png)
189.8 physical atomic mass units (unit officially deprecated)
Comparisons as mass of molecule
![≈ 0.26 × molecular mass of fullerene ( ≈ 721 u )](../image_source/51ecf64be45009618cd2073283ec7082.png)
≈ 0.26 × molecular mass of fullerene ( ≈ 721 u )
![≈ 0.98 × molecular mass of caffeine ( ≈ 194 u )](../image_source/3255bcdde7d0585630633c3de10646ac.png)
≈ 0.98 × molecular mass of caffeine ( ≈ 194 u )
![≈ 3.2 × molecular mass of sodium chloride ( ≈ 58 u )](../image_source/08364bac7387e4c88a1ccbbde2786d40.png)
≈ 3.2 × molecular mass of sodium chloride ( ≈ 58 u )
Corresponding quantities
![Relative atomic mass A_r from A_r = m_aN_A/M_u: | 190](../image_source/81d2e9b7cfb64e50d28837fd634e155b.png)
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 190
![Molar mass M from M = m_aN_A: | 190 g/mol (grams per mole)](../image_source/767d9cd2d99ae25e944b3d48fbf1f636.png)
Molar mass M from M = m_aN_A: | 190 g/mol (grams per mole)
![Relative molecular mass M_r from M_r = m_mN_A/M_u: | 190](../image_source/d8b9f13fe558f29bbbcaba402f6a1100.png)
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 190
![Molar mass M from M = m_mN_A: | 190 g/mol (grams per mole)](../image_source/25889bb9b58d340e96f6fe4f3c38115d.png)
Molar mass M from M = m_mN_A: | 190 g/mol (grams per mole)