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Lena [83]
4 years ago
8

Una muestra de 258.4 g de etanol (C2H5OH) se quemó en una bomba calorimétrica

Chemistry
1 answer:
Ilia_Sergeevich [38]4 years ago
4 0

Answer:

Explanation:

Unclear question.

I infer you want a clear rendering, which reads;

A 258.4 g sample of ethanol (C2H5OH) was burned in a calorimetric pump using a Dewar glass. As a consequence, the water temperature rose to 4.20 ° C.

If the heat capacity of the water and the surrounding glass was 10.4 kJ / ° C, calculate the heat of combustion of one mole of ethanol.

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Help please :) with this
ziro4ka [17]

Answer:

<em>option</em><em> </em><em>C </em><em>5</em>

<em>hope </em><em>this</em><em> answer</em><em> helps</em><em> you</em><em> dear</em><em>!</em><em> </em><em>take </em><em>care</em>

8 0
3 years ago
Read 2 more answers
2 Ca + O2 = 2 CaO 50g Ca used what is the grams of CaO?
tankabanditka [31]

Answer:

70g

Explanation:

2*40 of cawill require 112g of cao

50g of ca will require

Ans=70g of cao

5 0
3 years ago
A mixture of compounds containing diethylamine, phenol, ammonia, and acetic acid is separated using liquid-liquid extraction as
umka2103 [35]

Answer:

I would expect to extract the acetic acid.

Explanation:

In the first step, since we are adding a concentrated acid,<u> it will react with the bases present in the mixture (diethylamine and ammonia) </u><u>forming salts</u><u>, </u><u>which are soluble in water</u>. Therefore, after draining the aqueous layer, we will have phenol and acetic acid left in the organic layer.

In the second step, we are adding a diluted base, so it will react with a strong acid. This compound is acetic acid, and its salt will be present in the aqueous layer. Phenol will be left on the organic layer.

7 0
3 years ago
Is each of these statements true? If not, explain why.(p) A bimolecular reaction is generally twice as fast as a unimolecular re
Ede4ka [16]

A bimolecular reaction typically takes twice as long as a unimolecular reaction. The answer is true

<h3>How is activation energy related to temperature?</h3>
  • Consider what must occur for ClNO2 to react with NO to understand why reactions have an activation energy.
  • First and foremost, these two molecules must clash in order to organise the system.
  • Not only must they be brought together, but they must also be kept in precisely the appropriate orientation relative to one other in order for the reaction to occur.
  • Some energy must also be used in order to break the Cl-NO2 bond and allow the Cl-NO bond to form.

learn more about bimolecular reaction refer

brainly.com/question/1195122

#SPJ4

5 0
2 years ago
Describe how a mole ratio is correctly expressed when it is used to solve a stoichiometry problem
notka56 [123]
Basically stoichiometry is the measurement of elements, that is, the study of chemical quantities consumed or produced in a chemical reaction. When we are performing it we are using a special chemical counting unit: the mole, a unit of measurement, and one mole of a substance contains 6.022 * 10^23 particles. Now mole ratio is defined as the ratio of moles of one substance to the moles of another substance in a balanced equation. <span>If we are looking for the mole ratio between two substances, we need to look at the balanced equations</span> for the coefficients in front of the substances you are interested in.
This should be your guiding mantra for doing stoichiometry problems!
3 0
3 years ago
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