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2 years ago

The process to separate the various components of a liquid mixture is called a fractional distillation true false

Chemistry

2 answers:

balandron [24]2 years ago

5 0

The answer is true. I just had this question on a test and I got it wrong for saying false.

Black_prince [1.1K]2 years ago

4 0

DecantationDecantation is a process for the separation of mixtures, by removing a layer of liquid, generally one from which a precipitate has settled. The purpose may be either to produce a clean decant, or to remove undesired liquid from the precipitate (or other layers). Separate liquids
so it is false

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An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL with water and was found to have a speci

lapo4ka [179]

Answer:

Optical purity = 76.9231 %

Specific rotation of mixture = - 97.6923 °

Explanation:

The mass of the racemic mixture = 3 g

It means it contains R enantiomer = 1.5 g

S enantiomer = 1.5 g

Amount of Pure R = 10 g

Total R = 11.5 g

Total volume = 500 mL + 500 mL = 1000 mL = 1 L

[R] = 11.5 g/L

[S] = 1.5 g/L

Enantiomeric excess = $\frac {Excess}{Total\ Concentration}\times 100$ = $\frac {11.5-1.5}{11.5+1.5}\times 100$ = 76.9231 %

Optical purity = 76.9231 %

Also,

Optical purity = $\frac {optical\ rotation\ of\ mixture}{optical\ rotation\ of\ pure\ enantiomer}\times 100$

Optical rotation of pure enantiomer = −127 °

$76.9231=\frac {optical\ rotation\ of\ mixture}{-127^0}\times 100$

Specific rotation of mixture = - 97.6923 °

6 0

2 years ago

The lowest parts of a transverse wave are called

Law Incorporation [45]

Its number 3 the troughs

5 0

3 years ago

Read 2 more answers

Zn(s)+S(s)-ZnS(s) What is the product and physical state

Yuki888 [10]

The Reactants are Zinc (Zn) and Sulfur (S).
The Product is Zinc Sulfide (ZnS).
All of them are solids.
The combined masses of the reactants must be 14 grams, too. Later in Chemistry you'll learn that's not really true, but it is for now.
Hope This Helps:)

4 0

2 years ago

Help plz ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!

ddd [48]

Honestly I don’t even know

7 0

3 years ago

What term is used for the electrons in the outermost shell

son4ous [18]

Answer:

valence electrons

Explanation: