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tiny-mole [99]
3 years ago
7

Considering the passage about crude oil, why is distillation the main process for separating the contents of crude oil?

Chemistry
1 answer:
Gnesinka [82]3 years ago
3 0
Maybe this graph will help

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You have a vial that may contain lead(II) cations or barium cations, but not both. Available to you are solutions of ammonium su
Bess [88]

Answer:

We should add, the KBr solution.

Explanation:

The vial contains Ba²⁺  and Pb²⁺

Our solutions are: (NH₄)₂ SO₄, NaF and KBr

We dissociate the solutions:

(NH₄)₂ SO₄  → 2NH₄⁺ + SO₄⁻²

NaF → Na⁺ + F⁻

KBr → K⁺ + Br-

When we add ammonium sulfate and sodium fluorine, we are adding sulfates and fluorines, but these two anions make precipitate both cations, we can not determine, if the vial contains Ba²⁺ or Pb²⁺

SO₄⁻²(aq) + Ba²⁺ (aq) → BaSO₄ (s)  ↓

SO₄⁻² (aq)+ Pb²⁺(aq)  → PbSO₄ (s)  ↓

2F⁻ (aq) + Ba²⁺ (aq) → BaF₂ (s) ↓

2F⁻ (aq) + Pb²⁺ (aq) → PbF₂ (s)  ↓

When we add the KBr, bromides only make precipitate with Pb²⁺, so the vial has only Pb²⁺ cation:

2Br⁻ (aq) + Ba²⁺ (aq) → BaBr₂ (aq)

2Br⁻ (aq) + Pb²⁺ (aq) → PbBr₂ (s) ↓

3 0
3 years ago
What class of organic product results when 1-heptyne is reacted with disiamylborane followed by treatment with basic hydrogen pe
yuradex [85]

Answer:

aldehyde

Explanation:

Aldehydes are a large class of reactive organic compounds (R-CHO) having a carbonyl functional group attached to one hydrocarbon radical and a hydrogen atom.

So, when terminal alkynes, for example, 1-heptyne react on Hydroboration oxidation(i.e. disiamylborane followed by treatment with basic hydrogen peroxide), the formation of aldehyde occurs.

3 0
3 years ago
How many atoms of hydrogen are in 100 g of hydrogen peroxide (h2o2)?
Maurinko [17]
Hello friends..

find the MW of HP 
calculate the # of mols per 100g of HP 
take the # of mols times 6.023 x 10^23 times 2 (2 H per molecule)

Hope it helps you..
7 0
3 years ago
There is nothing that you can do to conserve energy. True or False
Firdavs [7]
I am going to say it is false.
6 0
3 years ago
Read 2 more answers
Enzymatic breakdown of which of the following compounds doesn't begin until it reaches the stomach?A) lipidsB) carbohydrates C)
kvv77 [185]

Answer is proteins (C)

7 0
3 years ago
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