Chemistry

A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 36.3mg produced 98.6 of CO2 and 20.2mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas

  1. 0
  2. 13
asked by Tiffany
  1. Convert 98.6 mg CO2 to mg C.
    Convert 20.1 g H2O to mg H (not H2).
    Then mg C + mg H + mg O = 36.3 mg an solve for mg O (not O2).
    Now convert mg to moles of the three elements.
    moles = g/molar mass
    Find the ratio of the elements to each other with the smallest number being 1.00. The easy way to do that is to divide the smallest number by itself. That assures you of getting 1.00 for that element. Then divide all of the other numbers by the same small number.
    Post your work if you get stuck.

    posted by DrBob222

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 36.3mg produced 98.6 of CO2 and 20.2mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and
  2. Math

    A landscaper plans to cover a 9-by-18-foot rectangular flower bed with bark dust 3 inches deep.The bark dust he is using costs $26 per cubic yard.What will be the total cost of the bark dust for this job? A) $64 B) $49 C) $39 D)
  3. chemistry

    A 20mg sample of a compound is dissolved in 5.0 mL of water and extracted with 2.5 mL of heptane. After seperation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition cofficient of the
  4. chemistry

    A 20mg sample of a compound is dissolved in 5.0 mL of water and extracted with 2.5 mL of heptane. After seperation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition cofficient of the
  5. organic chemistry

    4. A 300-ml aqueous solution containing 40 g compound A is to be extracted with ether. The solubility of compound A in either at room temperature is 20 g per 100 ml and in water is 13.3 g per 100 ml. calculate the weight of the
  6. Chemistry

    An aqueous solution of volume, v1 cm3, contains a mass, mg,of a compound to be extracted. When shaken with v2 cm3 of an organic solvent, a certain proportion, x, of this compound dissolves. Derives an expression for x in terms of
  7. English

    Give 3 other ways to say Some dogs bark No dogs bark All dogs bark Not even one dog barks Please is this right?
  8. Probability

    A box contains 10 balls. Three of them are white, five are red, and two are black. Calculate the following probabilities: a) The first ball extracted is red. b) The first ball extracted is red or white. c) The second ball
  9. Chemistry

    a sample of a compound with a mass of 0.4168g is extracted from a plant. Decompostion of this sample produces 0.1667g of carbon, 0.2223g oxygen, and the remainder is hydrogen. What is the percentage compostion (by mass) of the
  10. Chemistry

    Can anyone please tell me what can you say about the purity of the compound extracted based on your TLC results? Thanks

More Similar Questions