Ask Question
21 November, 09:40

What is total number of molecules contained in 0.50 mole of o2 at STP

+2
Answers (1)
  1. 21 November, 10:04
    0
    1 moles of O2 at STP has 6.02 X 10 ^ 23 molecules

    .5 mole has 3.01 X 10 ^ 23 molecules

    What is the total number of molecules in 1.0 mole of Cl2 (g) ?

    by definition 1 mole of gas has Avogadros number of molecules = 6.02 x 10 ^ 23

    What is the percent by mass of aluminum in Al2O3?

    Al in 1 mole of Al2O3 = 27*2 g

    1 mole of Al2O3 weighs 102 g

    % Al = 54 / 102 = 52.92 %

    What is the empirical formula of a compound that contains 92.3% carbon and 7.7% hydrogen by mass?

    In 100 g of compound we have 92.3 g of C = 92.3 / 12 = 7.69

    moles of H = 7.7

    molar ratio of C : H = 7.96 : 7.7 = 1:1

    empirical formula is CH
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “What is total number of molecules contained in 0.50 mole of o2 at STP ...” 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