Ask Question
8 March, 03:43

How many of the following are found in 15.0 kmol of xylene (C8H10) ? (a) kg C8H10; (b) mol C8H10; (c) lb-mole C8H10; (d) mol (g-atom) C; (e) mol H; (f) g C; (g) g H; (h) molecules of C8H10.

+4
Answers (1)
  1. 8 March, 04:34
    0
    a) 1592.4 kg C8H10

    b) 15*10³ mol C8H10

    c) 33.1 lb-mole

    d) 1.2 * 10^5 mol C

    e) 1.5 * 10^5 mol H

    f) 1.44 * 10^6 grams C

    g) 1.52 * 10^5 grams H

    h) 9.03*10^27 molecules C8H10

    Explanation:

    Step 1: Data given

    Number of moles C8H10 = 15.0 kmol = 15000 moles

    Molar mass of C8H10 = 106.16 g/mol

    Step 2: Calculate mass C8H10

    Mass C8H10 = moles C8H10 * molar mass C8H10

    Mass C8H10 = 15000 * 106.16 g/mol

    Mass C8H10 = 1592400 grams = 1592.4 kg

    Step 3: Calculate moles C8H10

    15.0 kmol = 15*10³ mol C8H10

    Step 4: Calculate lb-mol

    15.0 kmol = 33.1 lb-mole

    Step 5: Calculate moles of C

    For 1 mol C8H10 we have 8 moles of C

    For 15*10³ mol C8H10 we have 8 * 15*10³ = 1.2 * 10^5 mol C

    Step 6: Calculate moles H

    For 1 mol C8H10 we have 10 moles of H

    For 15*10³ mol C8H10 we have 10 * 15*10³ = 1.5 * 10^5 mol H

    Step 7: Calculate mass of C

    Mass C = moles C * molar mass C

    Mass C = 1.2 * 10^5 mol C * 12 g/mol

    Mass C = 1.44 * 10^6 grams

    Step 8: Calculate mass of H

    Mass H = moles H * molar mass H

    Mass H = 1.5 * 10^5 mol H * 1.01 g/mol

    Mass C = 1.52 * 10^5 grams

    Step 9: Calculate molecules of C8H10

    Number of molecules = number of moles * number of Avogadro

    Number of molecules = 15*10³ mol C8H10 * 6.022*10^23

    Number of molecules = 9.03*10^27 molecules
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “How many of the following are found in 15.0 kmol of xylene (C8H10) ? (a) kg C8H10; (b) mol C8H10; (c) lb-mole C8H10; (d) mol (g-atom) C; ...” 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