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masha68 [24]
3 years ago
8

An unknown compound was found to be soluble in concentrated sulfuric acid; however, the 2,4-DNP, chromic acid, and potassium per

manganate gave negative results. The only positive result detected was the ferrous hydroxide test. What is the most likely functional group present in such compound
Chemistry
1 answer:
Alecsey [184]3 years ago
5 0

Explanation:

2,4-DNP is negative: aldehyde and ketone absent

Chromic acid is negative: alcohol absent.

KMnO4 test negative: alkene absent

The only positive result is for Fe(OH)2.

Nitro group-containing compounds react with ferrous hydroxide to give amine and ferric hydroxide red ppt. Hence given compound contains the nitro group (-NO2).

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In which of the following compounds is the mass ratio of chromium to oxygen closest to 1.62 to 1.00?
ohaa [14]

Answer:

The answer to your question is letter A

Explanation:

Data

Mass ratio 1.62 to 1.00

Atomic mass Cr = 52 g

Atomic mass O  = 16

Process

1.- Calculate the proportion Chromium to Oxygen to each possible solutions

a) CrO₃   =   \frac{52}{16 x 3} = \frac{52}{48} = 1.08

b) CrO₂   =   \frac{52}{16 x 2} = \frac{52}{32} = 1.63

c) CrO     = \frac{52}{16} = 3.25

d) Cr₂O   =  \frac{52 x 2}{16} = \frac{104}{16} = 6.5  

8 0
3 years ago
Why are scientists now more excited about sound levitation than they had been previously?
Olenka [21]

Answer:

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Explanation:

3 0
3 years ago
If you compare the egg to a cell, what did you learn about how water moves into or out of a cell
sleet_krkn [62]

If we compare a cell with an egg there is a major difference between the outer membrane

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Sulfur trioxide is a gas that reacts with liquid water to produce aqueous sulfuric acid, or acid rain. What is the equation for
ivanzaharov [21]
B) SO₃(g) + H₂O(l) → H₂SO₄(aq)
3 0
3 years ago
Read 2 more answers
This system has an equilibrium constant of 0.105 at 472°C: N2(g) + 3H2(g) ↔ 2NH3(g)
Kamila [148]

Answer:

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A. 0.0625

How does Q compare to Keq?

B. Q < Keq

Explanation:

5 0
3 years ago
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