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molecular mass of rubidium fluoride

Input interpretation

rubidium fluoride | molecular mass
rubidium fluoride | molecular mass

Result

Find the molecular mass, m, for rubidium fluoride: 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: RbF Use the chemical formula, RbF, to count the number of atoms, N_i, for each element:  | N_i  F (fluorine) | 1  Rb (rubidium) | 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  F (fluorine) | 1 | 18.998403163  Rb (rubidium) | 1 | 85.4678 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  F (fluorine) | 1 | 18.998403163 | 1 × 18.998403163 = 18.998403163  Rb (rubidium) | 1 | 85.4678 | 1 × 85.4678 = 85.4678  m = 18.998403163 u + 85.4678 u = 104.4662 u
Find the molecular mass, m, for rubidium fluoride: 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: RbF Use the chemical formula, RbF, to count the number of atoms, N_i, for each element: | N_i F (fluorine) | 1 Rb (rubidium) | 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 F (fluorine) | 1 | 18.998403163 Rb (rubidium) | 1 | 85.4678 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 F (fluorine) | 1 | 18.998403163 | 1 × 18.998403163 = 18.998403163 Rb (rubidium) | 1 | 85.4678 | 1 × 85.4678 = 85.4678 m = 18.998403163 u + 85.4678 u = 104.4662 u

Unit conversions

104.466 Da (daltons)
104.466 Da (daltons)
0.104466 kDa (kilodaltons)
0.104466 kDa (kilodaltons)
1.7347×10^-22 grams
1.7347×10^-22 grams
1.7347×10^-25 kg (kilograms)
1.7347×10^-25 kg (kilograms)
104.471 chemical atomic mass units  (unit officially deprecated)
104.471 chemical atomic mass units (unit officially deprecated)
104.499 physical atomic mass units  (unit officially deprecated)
104.499 physical atomic mass units (unit officially deprecated)

Comparisons as mass of molecule

 ≈ ( 0.14 ≈ 1/7 ) × molecular mass of fullerene ( ≈ 721 u )
≈ ( 0.14 ≈ 1/7 ) × molecular mass of fullerene ( ≈ 721 u )
 ≈ 0.54 × molecular mass of caffeine ( ≈ 194 u )
≈ 0.54 × molecular mass of caffeine ( ≈ 194 u )
 ≈ 1.8 × molecular mass of sodium chloride ( ≈ 58 u )
≈ 1.8 × molecular mass of sodium chloride ( ≈ 58 u )

Corresponding quantities

Relative atomic mass A_r from A_r = m_aN_A/M_u:  | 104
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 104
Molar mass M from M = m_aN_A:  | 104 g/mol (grams per mole)
Molar mass M from M = m_aN_A: | 104 g/mol (grams per mole)
Relative molecular mass M_r from M_r = m_mN_A/M_u:  | 104
Relative molecular mass M_r from M_r = m_mN_A/M_u: | 104
Molar mass M from M = m_mN_A:  | 104 g/mol (grams per mole)
Molar mass M from M = m_mN_A: | 104 g/mol (grams per mole)