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Katena32 [7]
3 years ago
14

Daniel claims that the product of two square roots of integers is always rational. His reasoning is given in the example below.

Type either "correct" or "incorrect" next to each part of Daniel's reasoning below to indicate whether or not there is a flaw. A square root can be rational. The product of two rational numbers is always rational. The product of two integers is always a perfect square.
Chemistry
1 answer:
Katen [24]3 years ago
6 0
Incorrect....................
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Laura jala un trineo una distancia de 2000 cm usando una cuerda, con una tensión constante de 80 N. La tarea requiere de 800 J d
Andre45 [30]

Respuesta:

60°

Explicación:

Paso 1: Información dada

  • Distancia recorrida (d): 2000 cm
  • Fuerza aplicada (F): 80 N
  • Trabajo realizado (W): 800 J

Paso 2: Convertir "d" a metros

Usaremos el factor de conversión 1 m = 100 cm.

2000 cm × 1 m/100 cm = 20 m

Paso 3: Calcular el ángulo entre la cuerda y el suelo (θ)

W = F × d × cosθ

800 J = 80 N × 20 m × cosθ

θ = 60°

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Consider the reactivity of phenol, bromobenzene, toluene, and nitrobenzene toward electrophilic aromatic substitution.
AlexFokin [52]

Answer:

The most reactive compound is:<u> Phenol </u>  because the<u> electron donating</u> character of the <u>alcohol group</u> increases the rate of the reaction.

The least reactive compound is <u>nitrobenzene</u>

because the <u>electron withdrawing</u> character of the<u> nitro group</u> decreases the rate of the reaction.

Explanation:

  • PHENOL-: Any of a group of organic compounds with a hydroxyl (OH) group bound to a carbon atom in an aromatic ring is known as phenol. The word phenol is also the basic name for its simplest member, monohydroxybenzene (C6H5OH), also known as benzenol or carbolic acid, in addition to being the common name for the entire family.
  • ELECTRON DONATING CHARACTER-: Via the carbon atom it is bound to, an electron donating group (EDG) has the net effect of increasing electron density in a molecule. EDGs alter a molecule's reactivity by increasing electron density on neighboring carbon atoms: EDGs make nucleophiles stronger.
  • ALCOHOL GROUP-:Each of a class of organic compounds that have one or more hydroxyl (OH) groups bound to an alkyl group's carbon atom (hydrocarbon chain)is called Alcohol. Alcohols are organic compounds of water (H_2O) in which one of the hydrogen atoms has been substituted by an alkyl group, which in organic structures is usually expressed by R.
  • NITROBENZENE-:The organic compound nitrobenzene has the chemical formula (C_6H_5NO_2). It's a pale yellow oil that's insoluble in water and smells like almonds. Greenish-yellow crystals form when it freezes. It is made on a wide scale as a precursor to aniline from benzene. It is sometimes used as a solvent in the laboratory, especially for electrophilic reagents.
  • ELECTRON WITHDRAWING GROUP-: An electron withdrawing group (EWG) is a type of group that reduces electron density in a molecule by bonding to a carbon atom. EWGs alter a molecule's reactivity by reducing electron density on neighboring carbon atoms.
  • NITRO GROUP-: The nitro group is one of the most widely used explosophores (functional groups that combine to form a compound explosive). In addition, the nitro group is a heavy electron-withdrawing group. CH bonds alpha (adjacent) to the nitro group may be acidic due to this property.
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Kipish [7]

Answer:

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Explanation:

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3 years ago
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