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Rayon - Semi Synthetic Polymers
Rayon is a man made material which contains purified cellulose in the type of long fibres. Cellulose is reacted along with cold NaOH solution to cleanse it and then treated along with CS2 to form a viscose solution. This is the reason why rayon is sometimes described as viscose rayon. This solution is provided to go through fine pores in metal cylinder, into a dilute H2SO4. This generates in the creation of long fibres. Rayon fibre is chemically identical to cotton but has a shine such as silk. As such rayon is as well described as artificial silk. Rayon is required on a big scale for making textiles, tyre-chord, surgical dressings and carpets. Not similar to fully synthetic polymers, it takes moisture and is bio-degradable.
A 200g golf ball is moving with a speed of 5 m per hour. The associated wave length (h = 6.625 x 10 -34 J sec)is: (1) 10- 1 0 m (2) 10 -20 m
Why NH4Cl and NH4OH are added to the test solution?
Read ALL the background, and ALL parts of the assignment ?rst (I wasn't kidding in the hints). Also, REWRITE code as you go through the assignment to make it as compact as you can.
How I write chm practice khata
Coordination no. is the no. assigned to an atom which tells us that how many other atoms are directly attached to it. eg. Pcl5 the cordination no. will be 5
Simple crystallisation - Purification of organic compounds This is the most general technique used to purify organic solids. It is associated with the concept that whenever
why HNO3 is not used for detection of acidic radicals of 1st and 2nd group?
Q. Crude and Dietary Fibre? Crude fibre is the organic residue which remains after the food sample has been treated with boiling dilute sulphuric acid, boiling dilute sodiu
drive phase rule
Equation shows the combustion of methane. a. By analogy, write a similar chemical equation using ethane, C 2 H 6 . b. Show this equation with Lewis structures. Answer:
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