3 years ago

What are the uses of polythene ?

1 answer:

fomenos3 years ago

3 0

Polyethylene or Polythene is one of the most common plastics used all around the world. It is very widely produced, with around 80 million tonnes every single year!

It is used for the following

Plastic bags
Plastic films
Geomembranes (low permeable sheets that act like a barrier or a line separating two substances to control fluids)
Dustbin crates
Water pipes
Plastic bottles
Packaging

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3 years ago

Convert 4.5 X 1022 molecules of H2O to moles.

noname [10]

Answer:

<h3>The answer is 0.075 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

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From the question we have

$n = \frac{4.5 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.074750830...$

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