it is found that the weight of an empty flat thin plastic bag is not changed when the bag is filled with air why not?
If the bag is empty, it is no longer a bag of marijuana, but an empty bag. It contains nothing, THC included.
How much does a 2 liter of pennies weigh?
because humans are not very economical
Almost 10 times as much as a plastic bag.
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That depends. How heavy is the bag you bought?
Yes it does. It's called oxidation. When your chlorine is exposed to the air it will lose it's effectiveness. Try this: Empty some out in another bucket, then empty the rest into a regular plastic garbage bag, put the bag back into the bucket, then add the rest. Remember to twist the top and get as much air out as possible. This will help.
Harry Wasylyk from Winnipeg invented the garbage bag. Go Canada.
2grams
A Semester in the Life of a Garbage Bag has 257 pages.
A Semester in the Life of a Garbage Bag was created in 1987-08.