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sergij07 [2.7K]
3 years ago
7

In a robinson annulation, an α,-unsaturated carbonyl compound reacts with a carbonyl compound to afford a (new) cyclic α,-unsa

turated ketone by a michael–aldol–dehydration sequence. draw the structure of the reactants that would combine to form the a ring of the steroid desoxy-19-nortestosterone (below) by a robinson annulation.

Chemistry
1 answer:
Marina CMI [18]3 years ago
4 0
Robinson Annulation reaction is mainly done for the synthesis of six membered rings. This reaction is the combination of two reactions 1). Michael Addition Reaction and 2). Aldole Condensation.

The synthesis of <span>desoxy-19-nortestosterone by Robinson Annulation is shown below,</span>

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Order the following from least to most cellularly complex:
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Answer:

organ, tissue, a cell, and a gorilla (i think)

Explanation:

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3 years ago
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Which pair of molecules is expected to have the most different properties?
Artyom0805 [142]

Answer:

This question is incomplete

The completed question is below

Which pair of molecules is expected to have the most different properties?

CO and NO

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The correct answer is SO₂ and CH₄

Explanation:

All the four substances are gases at room temperature.

Carbon monoxide (CO) and nitric oxide (NO) are both reactive oxides. They are both polar and inorganic also, hence should have some similar properties (based on there origin/composition and polarity).

Sulphur dioxide (SO₂) is polar because it's a bent molecule, methane (CH₄) is non-polar because of the tetrahedral shape of it's molecule. Methane is an organic molecule while sulphur dioxide is an inorganic molecule.

From the above, <u>it can be deduced that SO₂ and CH₄ are expected to have different properties</u>. For example, the polarity of SO₂ makes it dissolve in water to form an acidic solution while methane does not dissolve in water and hence doesn't form an acidic solution.

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3 years ago
Qué aplicación tiene el método científico en la química? lo necesito ya porfaa :(
netineya [11]

Answer:

El método científico es un método de investigación que involucra experimentación y observación para adquirir nuevos conocimientos, resolver problemas y responder preguntas. ... Paso 1: hacer observaciones. Paso 2: Formule una hipótesis. Paso 3: probar la hipótesis mediante la experimentación.

Explanation:

¡espero que esto ayude! :)

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2 years ago
Using words, explain all steps of dimensional analysis when converting 6.7 hectometers to meters. You must explain the set up of
Anettt [7]

Answer:

\large \boxed{\text{670 m}}

Explanation:

Dimensional analysis uses the fact that any number can be multiplied by one without changing its value.

You want to convert hectometres to metres, so you multiply the hectometres by a conversion factor that equals one.

For example, you know that hecto  means "× 10², so  

1 hm = 100 m

If we divide each side by 1 hm, we get 1 = 100 m/1 hm.

If we divide each side by 100 m, we get 1 hm/100 m = 1.

So, we can use either (100 m/1 hm) or (1 hm/100 m) as a conversion factor, because each fraction equals one.

We choose the former, because it has the desired units on top.

The calculation becomes

\text{Distance} = \text{6.7 hm} \times \dfrac{\text{100 m}}{\text{1 hm}} = \textbf{670 m}\\\\\text{6.7 hm} =\, $\large \boxed{\textbf{670 m}}$}

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3 years ago
Answers for worksheet activity B
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Where is the picture??
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