Chemistry

How many atoms of carbon are present in
31.4 g of a compound that is 16.2% carbon, by weight?
Answer in units of atoms.

  1. 👍 0
  2. 👎 0
  3. 👁 259
  1. The mass is 31.4 g and it is 16.2%C; therefore, g C = 31.4*0.162 = ??
    moles C = ??g/molar mass C = xx moles C..
    1 mole of C atoms contains 6.022E23 atoms and you have xx moles C. _____ = # C atoms.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    1. Glucose is a simple sugar made up of carbon, hydrogen, and oxygen. What kind of molecule is glucose? A) Glucose is protein B) Glucose is a nucleic acid*** C) Glucose is an organic molecule D) Glucose is an inorganic molecule 2.

  2. chemistry: please check answers.

    1. How many valence electrons does a carbon atom have? A) 1 B) 2 C) 3 D) 4

  3. Science

    A molecule of ethanol has two carbon atoms, six hydrogen atoms, and one oxygen atom. A ball-and-stick model of ethanol is made from the following components: -One red ball -Two black balls -Six white balls -Eight sticks What do

  4. chemistry

    When a 8.45-mg sample of a compound containing carbon is burned completely, 18.1 mg of carbon dioxide is produced. What is the mass percentage of carbon in the compound?

  1. chemistry help!!! please!!! DrBob222 I need you!!

    How many atoms of carbon are needed to produce 0.45 mol Al? 3C + 2Al2O3 4Al + 3CO2 A. 2.6 × 1026 atoms B. 9.7 × 1024 atoms C. 3.0 × 1022 atoms D. 2.0 × 1023 atoms I'm really very stuck with this question. please help me!!!

  2. Science

    If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products? A) 2 atoms of carbon (C) B) 3 atoms of carbon (C) C) 6 atoms of carbon (C)**** D) 12 atoms of

  3. Chemistry

    Calculate the number of moles of carbon atoms present in 1.1 g of ethanol (C2H6O). Answer in units of mol.

  4. Chemistry

    How many carbon tetrachloride (CCl4) molecules are in 3.00 mol of CCl4? How many carbon atoms? How many chlorine atoms? How many total atoms? I have no idea how to do all of this =\

  1. chemistry

    2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass of the compound was found to be 60. a)What are the masses of carbon, hydrogen and oxygen in 2.4g of

  2. Chemistry

    1. Calculate the number of moles of carbon atoms present in 2.4g of ethanol (C2H6O). 2. What is the % Nitrogen by weight in 3.696 mol of ammonium sulfide. 3. How many atoms of mercury are present in 5.4 cubic cm of liquid mercury?

  3. chemistry

    The chemical substance in natural gas is a compound called methane. Its molecules are composed of carbon and hydrogen and each molecule contains four atoms of hydrogen and one atom of carbon. In this compound, 0.33597g of hydrogen

  4. chemistry

    How many atoms of carbon are needed to produce 0.45 mol Al? 3C + 2Al2O3 4Al + 3CO2 A. 2.6 × 1026 atoms B. 9.7 × 1024 atoms C. 3.0 × 1022 atoms D. 2.0 × 1023 atoms

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