chemistry

posted by .

from 200 mg of CO2, 10^21 molecules are removed. how many moles of CO2 are left?

  • chemistry -

    mols CO2 = grams/molar mass
    There are 6.02E23 molecules in a mol.
    Subtract 1E10^21 to find number left.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co?
  2. Chemistry

    I need help the question is Convert 25 x 10 to the 25th molecules of CO2 to grams of CO2. I know that one molecule of CO2 is 44.01 g but the answers are .106g,9.44g,1.8x10^4 g, and 2.5 x 10^4 g I don't get it can anyone help me!
  3. chemistry

    Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 2.46 moles of CO2 react completely?
  4. chemistry help

    Determine the number of moles of each specified atom or ion in the given samples of the following compunds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules …
  5. Chemistry

    One method of removing CO2(g) from a spacecraft is to allow the CO2 to react with LiOH. 2LiOH(s)+CO2(g)---->Li2CO3(s)+H2O(l) How many liters of CO2(g) at 25.5 degrees celsius and 749 Torr can be removed per 9kg of LiOH consumed?
  6. Chemistry

    Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the …
  7. Chemistry

    CaCO3(s) <-> CaO(s) + CO2(g) What would happen if CO2 was removed?
  8. Chemistry - check answer

    A 20.0 L reaction vessel contains 0.016 moles CO2, 1.05 moles of CO, and 2.00 moles of C. The mixture is approaching the following equilibrium: CO2(g) + C(s) <--> 2CO(g) a) Calculate the reaction quotient Q. b) If value of K …
  9. chemistry

    A Can of CO2 contains 5.75gmolecules of CO2. Calculate (a)number of moles of CO2 (b) mass of CO2.
  10. Chemistry

    UMM.. I keep coming up with the wrong answer?

More Similar Questions