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) glucose, C6H12O6
c) acetic acid, HC2H3O2

  1. 👍
  2. 👎
  3. 👁
  1. Example: b) glucose.
    a. determine the molecular mass of the compound: 6*12+12*1+6*16= 180
    Percent of C= 6*12/180 x 100
    percent of H= 12*1/180 x 100
    percent of O= 6*16/180 x 100
    and of course, the percents should add to 100.

    1. 👍
    2. 👎
    👤
    bobpursley
  2. Acetic acid, HC2 H3 O2

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. nitroglycerin (used medically as a vasodilator to treat heart conditions): C 15.87% H 2.22% N 18.50% O

  2. chemistry

    Determine the percentage composition of each of the following compounds a) NaCl b) AgNO3 c) Mg(OH)2

  3. Chemistry

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

  4. CHEMISTRY

    sorry! this is the full question: Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.78 g of sodium and 2.74 g of chlorine. Which of the following could be the results of the

  1. chemistry

    Which of the following statements concerning differences between ionic and molecular compounds is correct? Molecular compounds contains two elements, and ionic compounds contain three of more elements ionic compounds contain

  2. Chem

    Calculate the mass percent composition of C,H, O and in aspirin. Express your answers using two significant figures. Enter your answers numerically separated by commas.

  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. Ochem

    A student needed to determine the percent composition of a mixture that contained fluorene and benzoic acid. The student took 283 mg of the mixture and used the extraction method to separate the components. Then both compounds

  1. 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

  2. Science

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

  3. Calc

    An airplane is flying at a speed of 350 mi/h at an altitude of one mile and passes directly over a radar station at time t=0. a) Express the horizontal distance d (in miles) that the plane has flown as a function of t. I really

  4. Chemistry

    I am confused about this problem. Any help is appreciated. A chemist performs a series of reactions that produce binary lithium compounds. The elements include sulfur, chlorine, nitrogen, fluorine, selenium, oxygen, and iodine.

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