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Volgvan
3 years ago
11

The Wolff–Kishner reaction uses hydrazine (H2NNH2) and hydroxide (–OH) to reduce a carbonyl to the alkane. The first steps of th

e mechanism convert a carbonyl to a hydrazone in a manner similar to imine formation. Draw the mechanism arrows for the reaction from the hydrazone to the alkane. Be sure to add lone pairs of electrons and nonzero formal charges to all species.
Chemistry
1 answer:
valentina_108 [34]3 years ago
8 0

Your answer would be D.

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A crime lab received a 235-gram sample. The sample had a molecular mass of 128.1 grams and the empirical formula is CH2O. How ma
kvv77 [185]

Explanation:

Given parameters:

Mass of sample = 235g

Molecular mass of sample = 128.1g

Empirical formula = CH₂O

Unknown:

Mass of each element in the sample = ?

Solution:

To solve this problem, we must know that the empirical formula of any compound is the simplest ratio of the atoms it contains. This is not the true formula of the compound.

      Molecular formula = (Empirical formula)ₙ

Let us find the molecular mass of the sample;

      CH₂O = 12 + 2(1) + 16 = 30g

   

      128.1  = (30)n

          n = 4

The molecular formula of the compound is;    (CH₂O)₄  = C₄H₈O₄

Now to find the grams of each element in the sample;

Express the molecular mass of each element and that of the compound as a fraction and multiply with the given mass;

    For C;

              \frac{4 x 12}{128.1}   x   235\\  = 88.06g

          H; \frac{8 x 1}{128.1}  x  235  = 14.68g

          O: \frac{4 x 16}{128.1} x 235 = 117.41g

learn more:

Mass composition brainly.com/question/3018544

#learnwithBrainly

7 0
3 years ago
When CO(g) reacts with O2(g) according to the following reaction, 283 kJ of energy are evolved for each mole of CO(g) that react
marissa [1.9K]

Answer:

2CO + O₂    →  2CO₂     ΔH = -566 kj

Explanation:

Given data:

Energy evolved when 1 mole of CO react = 283 Kj

Energy evolved when 2 mole of CO react = ?

Solution:

Chemical equation:

2CO + O₂    →  2CO₂    

It is given when one mole of CO react with oxygen 283 KJ energy is produced.

When 2 mole react,

2 ×-283 kj = -566 kj

Thermal equation:

2CO + O₂    →  2CO₂     ΔH = -566 kj

8 0
4 years ago
What is the deffinition of interia
amid [387]

Answer:

Explanation:

-a tendency to do nothing or to remain unchanged

-a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

7 0
3 years ago
Which sample contains particles in a rigid, fixed, geometric pattern?(1) CO2(aq) (3) H2O(ℓ)(2) HCl(g) (4) KCl(s)
Masteriza [31]
KCI (s) contains particles in a rigid, fied, geometric pattern.
3 0
3 years ago
Which correct answer is it?
nordsb [41]
C. because i take college classes and I've did this before
4 0
3 years ago
Read 2 more answers
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