9.24
When you are in a supermarket, which do you usually request, plastic or
paper grocery bags? List the advantaged and disadvantages of plastic
versus paper bags, and decide which is preferable. Then prepare a latter
to the editor of a newspaper clearly stating your position and
explaining your reasons for it.
9.27
A Web search for “landfills” can bring up high quality information
about garbage. If you browse through these sites, you will see that a
fair amount of controversy surrounds the plastic materials that can be
used to construct the liner. Search for “landfill liners” and check
out the plastics involved.
Which polymers are now used for liners?
What are their drawbacks?
Are there new polymers that offer more desirable properties? Cite the
author and url of the web sites.
11.5
Calculate your BMI if you weigh 160 pounds.
12.18
One of the reasons that science fiction is successful is that it starts
with a known scientific principle and extends, elaborates, and sometimes
embroiders it. Perhaps you can be as successful as Michael Crichton was
with Jurassic Park. Start by identifying a scientific principle, and
then writing an outline (a few paragraphs) for a story based on that
principle. Be sure to identify the chemical concepts that you plan to
include and any pseudoscience that you might employ.
Chemistry Homework Solutions
#13757
Chemistry Problems
9.24
When you are in a supermarket, which do you usually request, plastic or paper grocery bags? List the advantaged and disadvantages of plastic versus paper bags, and decide which is preferable. Then prepare a latter to the editor of a newspaper clearly stating your position and explaining your reasons for it.
9.27
A Web search for "landfills" can bring up high quality information about garbage. If you browse through these sites, you will see that a fair amount of controversy surrounds the plastic materials that can be used to construct the liner. Search for "landfill liners" and check out the plastics involved.
a. Which polymers are now used for liners?
b. What are their drawbacks?
c. Are there new polymers that offer more desirable properties? Cite the author and url of the web sites.
11.5
a. Calculate your BMI if you weigh 160 pounds.
12.18
One of the reasons that science fiction is successful is that it starts with a known scientific principle and extends, elaborates, and sometimes embroiders it. Perhaps you can be as successful as Michael Crichton was with Jurassic Park. Start by identifying a scientific principle, and then writing an outline (a few paragraphs) for a story based on that principle. Be sure to identify the chemical concepts that you plan to include and any pseudoscience that you might employ.
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