Ask Question
9 February, 18:03

Which compound has the highest precent composition by mass of strontium?

A) SrCl2

B) SrI2

C) SrO

D) SrS

+4
Answers (1)
  1. 9 February, 21:09
    0
    First find the molar masses of all of the compounds:

    SrCl2 = 158.53g/mol

    SrI2 = 341.43g/mol

    SrO = 103.62g/mol

    SrS = 119.68g/mo

    Then find the molar mass of Sr in each of the compounds. Since there is only one Sr in every compound, the mass will be the same: 87.62g/mol Sr

    Now divide the molar mass of Sr by each of compounds' masses:

    SrCl2 = (87.62) / (158.53) = 0.553

    SrI2 = (87.62) / (341.43) = 0.257

    SrO = (87.62) / (103.62) = 0.846

    SrS = (87.62) / (119.68) = 0.732

    Now multiply each of the results by 100 to get the percent composition of Sr by mass:

    (0.553) (100) = 55.3% Sr in SrCl2

    (0.257) (100) = 25.7% Sr in SrI2

    (0.846) (100) = 84.6% Sr in SrO

    (0.732) (100) = 73.2% Sr in SrS

    Thus SrO has the highest percent composition by mass of Sr
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Which compound has the highest precent composition by mass of strontium? A) SrCl2 B) SrI2 C) SrO D) SrS ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers