chemistry

posted by .

How do you solve this problem?

In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a shpere) is 10.0cm^3. Calculate the surface area of the catalyst. IF the sphere is broken down into eight spheres, each having a volume of 1.25 cm^3, what is the total surface area of the spheres? Which of the two geometric configurations of the catalyst is more effective? (The surface area of a shpere is 4pir^2). Based on your analysis here, explain why it is sometimes dangerous to work in grain elevators?

  • chemistry -

    Volume is 4/3 PI r^3, and Surface area of a sphere is 4PI r^2

    Lets look at SurfaceArea/Volume

    S/V=4PIr^2/(4/3 PI r^3)= 3/r

    what happens as r goes to zero?
    So it seems that smaller r is more effective is one is looking for surface area.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    catalyst: a substance that changes the speed of a chemical reaction without affecting the yield or undergoing permanent chemical change* As you can see NO (nitrogen monoxide) did not undergo a permanent change. *http://www.chem.purdue.edu/gchelp/gloss/catalyst.html …
  2. Chemistry

    During rate of reverse step... A. A catalyst decreases the reverse rate of reaction. B. A catalyst does not change the reverse rate of reaction. C. A catalyst increases the reverse rate of reaction. A catalyst hastens the time for …
  3. Chemistry

    Answer check: Define a catalyst and explain a catalyst's role in a chemical reaction. A catalyst is a substance that speeds a chemical reaction without being permanently changed itself. It works by providing a convenient surface for …
  4. chemistry II

    I search the web and my texbook doesn't have the answer so please help What are the four steps of a process involving a heterogeneous catalyst?
  5. Chemistry

    Which of the following is the BEST explanation for why a catalyst speeds up a reaction?
  6. Chemistry

    Which of the following is the BEST explanation for why a catalyst speeds up a reaction?
  7. Chemistry

    Which of the following is the BEST explanation for why a catalyst speeds up a reaction?
  8. Chemistry

    How is Surface catalyst(heterogeneous) and homogeneous catalyst different?
  9. Homework Help ME! Science

    In the reaction mechanism below, indicate what substance is acting like a catalyst. Step 1: H2O2 (aq) + I- (aq) → H2O (l) + IO- (aq) Step 2: H2O2 (aq) + IO- (aq) → H2O (l) + I- (aq) Is the catalyst in the problem above …
  10. chemistry

    Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?

More Similar Questions