Chemitry

molecular formula of lithium carbonate is LiCO.What is the molecular weight of the drug?
a. 100.88
b. 73.88
c.48
d. 6.94

  1. 👍 0
  2. 👎 0
  3. 👁 24
asked by deb
  1. just look up the atomic weights of the elements and add them up.

    since O=16 and C=12, CO3 = 60, and Li is lighter than C, so (b) is the only possible choice.

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. chem

    A molecular compound is composed of 58.8% Xe, 7.2% O, and 34.0% F, by mass. If the molecular weight is 223 g/mol, what is the molecular formula? Draw the correct Lewis structure. Predict the molecular geometry using the VSEPR

    asked by chemistry on December 13, 2010
  2. chemistry

    A compound has the following composition. C 54.5%, H 9.10% and 0 36.4% its molecular weight is 88.10. Determine its empirical formula and molecular formula. Take 100 g sample. That gives you 54.5 g C, 9.10 g H and 36.4 g O. Now

    asked by Brooke on June 24, 2007
  3. Chemistry

    I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40

    asked by Matthew on February 20, 2012
  4. Chemistry

    I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40

    asked by Matthew on February 20, 2012
  5. Chemistry

    if a student finds the molecular weight of an unknown liquid to be 115 g/mole and the molecular formula of the liquid is CHCl3, what is the percent error in the student's molecular weight?

    asked by Gabby on December 10, 2012
  6. chemistry

    a compound with the molecular weight of 276 grams was determined to be 39.10% carbon, 8.77% hydrogen, and 52.13% oxygen. what is the empiricial formula and the molecular formula for the compound? i do not know where to start! i

    asked by shelly on November 28, 2009
  7. Chemistry

    A calcium sample weighting 607.4 mg was precipitated as oxalate and calcined calcium carbonate giving 246.7 mg. What the percentage of calcium in the sample? Calcium molecular weight: 40.078 g/mol CaCO3 molecular weight: 100 g/mol

    asked by MONICA on November 2, 2016
  8. Chemistry

    A compound of molecular weight 70.1 has the following composition: Carbon 85.63% and hydrogen 14.37%. What is the empirical formula? What is the molecular formula?

    asked by Patsy on August 16, 2012
  9. Finding the Molecular Formula

    A certain compound containing only carbon and hydrogen was found to have a vapor density of 2.550 g/L at 100 degrees C and 760 mm Hg. If the empirical formula of this compound is CH, what is the molecular formula of this compound?

    asked by Amy on December 8, 2012
  10. Chemistry

    A compound of B and H is found to have a mass percent composition of 81.1% Boron. Its empirical formula is B2H5. A mass spectrometry experiment tells us that the molecular mass is 53.3 g/mol. What is its molecular formula? So I

    asked by Nikela on March 23, 2016

More Similar Questions