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stealth61 [152]
3 years ago
5

Why are nanowhiskers used to repel stains on fabrics??

Chemistry
1 answer:
WINSTONCH [101]3 years ago
7 0

Nanowhiskers or cellulose nanofibers are nano-structured cellulose produced by bacteria. They have relatively high crystallinity and ability to form a dense network held together by inter-fibrillar bonds that has the tendency to act as a barrier through their film-forming properties to which they can repel stains on fabric.

 

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Calculate the amount of copper (in moles) in a 45.2 g pure copper sheet
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Answer:

0.712 mol

Explanation:

The easiest way to do this is to use a proportion.

1 mol of copper = 63.5 grams (check this using your periodic table).

x mol of copper = 45.2 grams

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63.5 x = 1 * 45.2              Divide by 63.5

x = 45.2/63.5

x = 0.712 mol                   Answer to 3 sig digs

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