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OlgaM077 [116]
2 years ago
13

You wish to extract an organic compound from an aqueous phase into an organic layer (three to six extractions on a marco scale).

With regard to minimizing the number of transfer steps, would it be better to use an organic solvent that is heavier or lighter than water
Chemistry
1 answer:
AVprozaik [17]2 years ago
7 0

Answer:

Explanation:

It will be better to use solvents that are lighter than water, because their density has an influence on the miscibility . This will give you a better separation during extraction.

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If a particular ore contains 55.4 % calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosp
gizmo_the_mogwai [7]
 The ore contains 55.4% calcium phosphate (related to the mineral apatite) so the amount of Ca3(PO4)2 is 55.4%x=1000g so x=1000/0.554= 1.805kg. Now for the % of P in this amount of calcium phosphate, use all the masses of the elements in Ca3PO4= Ca=40.078 x 3= 120.23 and (PO4)2= (30.974+64)2=189.95  (NB oxygen is 16 mass x 4 =64) so the total mass is 310.2 and we have 61.95 of P (Pmass x 2) so 61.95/3102.= 0.19 or 19% P. So of the 1.805 x 0.19= 0.34kg of phosphorus.
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2 years ago
What commercially available compound is used to generate cl2?
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When working with food, personal items such as a cell phone should be
ratelena [41]

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Explanation:

5 0
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0.50 mol A, 0.60 mol B, and 0.90 mol C are reacted according to the following reaction
algol [13]

Reactant C is the limiting reactant in this scenario.

Explanation:

The reactant in the balanced chemical reaction which gives the smaller amount or moles of product is the limiting reagent.

Balanced chemical reaction is:

A + 2B + 3C → 2D + E

number of moles

A = 0.50 mole

B = 0.60 moles

C = 0.90 moles

Taking A as the reactant

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0.50 moles of A will produce \frac{2}{1} = \frac{x}{0.50}

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2 moles of B reacted to form 2 moles of D

0.60 moles of B reacted to form x moles of D

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Taking C as the reactant:

3 moles of C reacted to form 2 moles of D

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= 0.60 moles of D is formed.

Thus C is the limiting reagent in the given reaction as it produces smallest mass of product.

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Which of these claims about the way energy is transferred in Earth’s interior is supported by evidence ?
mr_godi [17]

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