Suppose the elements x and y combine to form two compounds xy2 and x3y2. When 0.1 mole of xy2 weighs 10g and 0.05 mole of x3y2 weighs 9g, the atomic weight of x and y are

a) 40,30
b) 60,40
c) 20,30
d) 30,20

  1. 👍 0
  2. 👎 0
  3. 👁 754
  1. find the mole weights

    x + 2y = 100

    3x + 2y = 180

    solve the system for x and y

    1. 👍 0
    2. 👎 2

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Cl2 reacts with the element Sr to form an ionic compound. Based on periodic properties, identify a molecule, X2, that is likely to to react with Sr in a way similar to how Cl2 reacts with Sr. Justify your choice. *****I think it

  2. Chemistry

    A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of

  3. Science PLEASE HELP

    Could a mixture be made up of only elements and no compounds? Explain why or why not.

  4. Chemistry

    Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. CO2, HCl, Al2S3, Cd, F2,Ag,O2,NaCl

  1. Science

    What do elements and compounds have in common? How do they differ?

  2. Sets

    Suppose Set B contains 69 elements and the total number elements in either Set A or Set B is 107. If the Sets A and B have 13 elements in common, how many elements are contained in set A?

  3. College Chemistry

    Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00-g sample of each compound. One sample contains 0.29 g of X and the other contains 0.38 g of X. Identify plausible sets of formulas for

  4. chemistry

    Express the composition of each of the following compounds as the mass percents of its elements...? 59) Express the composition of each of the following compounds as the mass percents of its elements. a) formaldehyde, CH2O b)

  1. Law of Multiple Proportions

    Two elements, R and Q, combine to form two binary compounds. In the first compound, 14.0 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 he

  2. chem (science)

    Which of the following pairs of elements are likely to form ionic compounds: A) helium and oxygen B) magnesium and chlorine C) chlorine and bromine D) potassium and sulfur E) sodium and potassium F) nitrogen and oxygen I believe

  3. Science

    Which of these represents a chemical change? A) two compounds combining to form a mixture B) a mixture being separated into two elements C) a compound being separated into two elements D) an element changing state from solid to

  4. organic compounds

    Discuss the types of trace elements in organic compounds.

You can view more similar questions or ask a new question.