chemistry

posted by .

If 4.32 g of Cu combines with 1.09 g of S to form 5.41 g of chalcochite, what is the empirical formula of chalcochite?

  • chemistry -

    4.32g Cu = .068 moles Cu
    1.09g S = .034 moles S

    .068 : 034 = 2:1, so it looks like C2S

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    How do I find the empirical formula for aluminium selenide?
  2. Chemistry (Check)

    True or False The empirical formula of a compound is always the same as the molecular compound. My Answear: True The empirical formula for acetylene is CH. The molecular formula is C2H2. Another example: The empirical formula for glucose …
  3. Chemistry

    If you divide the molar mass of a compound by the empirical formula mass, what is the result?
  4. chemistry

    How do I calculate the mas of oxygen that combines with one mol of arsenic atoms to form the oxide of arsenic?
  5. chemistry

    I have a chemical composition of As2O3. How do I calculate the mass of oxygen that combines with 1 mol of arsenic to form the oxide of arsenic?
  6. Chemistry

    Please check my answers for the following questions. THANK YOU. 1) The empirical formula of a compound that is 25.9% nitrogen and 74.1% oxygen is.... ANSWER: N2O 2) empirical formula of a compound that consists of 4.80 grams of carbon, …
  7. chemistry - empirical formula

    write the empirical formula for each of the following molecular formulae" a)P4O10 b)C2H6 Confused as to what the diff.is b/w empirical and formula...have no idea how to answer these b/c they look like empirical formulas to me
  8. Chemistry

    Xenon of mass 5.08 g reacts with fluorine to form 9.49 g of a xenon fluoride. What is the empirical formula of this compound?
  9. chemistry

    Determining a Molecular Formula from an Empirical Formula 1. A compund has an experimental molar mass of 78g/mol. Its empirical formula is CH. What is its molecular formula?
  10. Chemistry

    Two elements, R and Q, combine to form two binary compounds. In the first compound, 9.50 g of R combines with 3.00 g of Q. In the second compound, 7.00 g of R combines with 4.50 g of Q. Show that these data are in accord with the law …

More Similar Questions