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molecular mass of hydrobromic acid

Input interpretation

hydrogen bromide | molecular mass
hydrogen bromide | molecular mass

Result

Find the molecular mass, m, for hydrogen bromide: 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: HBr Use the chemical formula, HBr, to count the number of atoms, N_i, for each element:  | N_i  Br (bromine) | 1  H (hydrogen) | 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  Br (bromine) | 1 | 79.904  H (hydrogen) | 1 | 1.008 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  Br (bromine) | 1 | 79.904 | 1 × 79.904 = 79.904  H (hydrogen) | 1 | 1.008 | 1 × 1.008 = 1.008  m = 79.904 u + 1.008 u = 80.912 u
Find the molecular mass, m, for hydrogen bromide: 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: HBr Use the chemical formula, HBr, to count the number of atoms, N_i, for each element: | N_i Br (bromine) | 1 H (hydrogen) | 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 Br (bromine) | 1 | 79.904 H (hydrogen) | 1 | 1.008 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 Br (bromine) | 1 | 79.904 | 1 × 79.904 = 79.904 H (hydrogen) | 1 | 1.008 | 1 × 1.008 = 1.008 m = 79.904 u + 1.008 u = 80.912 u

Unit conversions

80.912 Da (daltons)
80.912 Da (daltons)
0.080912 kDa (kilodaltons)
0.080912 kDa (kilodaltons)
1.3436×10^-22 grams
1.3436×10^-22 grams
1.3436×10^-25 kg (kilograms)
1.3436×10^-25 kg (kilograms)
80.915 chemical atomic mass units  (unit officially deprecated)
80.915 chemical atomic mass units (unit officially deprecated)
80.938 physical atomic mass units  (unit officially deprecated)
80.938 physical atomic mass units (unit officially deprecated)

Comparisons as mass of molecule

 ≈ ( 0.11 ≈ 1/9 ) × molecular mass of fullerene ( ≈ 721 u )
≈ ( 0.11 ≈ 1/9 ) × molecular mass of fullerene ( ≈ 721 u )
 ≈ 0.42 × molecular mass of caffeine ( ≈ 194 u )
≈ 0.42 × molecular mass of caffeine ( ≈ 194 u )
 ≈ 1.4 × molecular mass of sodium chloride ( ≈ 58 u )
≈ 1.4 × molecular mass of sodium chloride ( ≈ 58 u )

Corresponding quantities

Relative atomic mass A_r from A_r = m_aN_A/M_u:  | 81
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 81
Molar mass M from M = m_aN_A:  | 81 g/mol (grams per mole)
Molar mass M from M = m_aN_A: | 81 g/mol (grams per mole)
Relative molecular mass M_r from M_r = m_mN_A/M_u:  | 81
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 81
Molar mass M from M = m_mN_A:  | 81 g/mol (grams per mole)
Molar mass M from M = m_mN_A: | 81 g/mol (grams per mole)