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AfilCa [17]
4 years ago
13

The reduction in the freezing point of a solution is inversely proportional to a molal concentration

Chemistry
1 answer:
maks197457 [2]4 years ago
7 0
The statement above about "<span>The reduction in the freezing point of a solution is inversely proportional to a molal concentration" is false. It must be directly proportional</span>
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Draw the major organic product for the reaction of 1-phenylpropan-1-one with the provided phosphonium ylide.
prohojiy [21]

Answer:

2-methylene propylbenzene

Explanation:

The Wittig Reaction is a reaction that converts aldehydes and ketones into alkenes through reaction with a phosphorus ylide.

The ketone in this case is 1-phenylpropan-1-one. The provided phosphonium ylide is shown in the image attached. The reaction involves;

i) alkylation  

ii) addition

The product of the major organic product of the reaction is 2-methylene propylbenzene.

4 0
3 years ago
Two or more substances in variable proportions, where the composition is variable throughout are a a homogeneous mixture. b a so
REY [17]

<u>Answer:</u> In heterogeneous mixture, the composition remains variable throughout.

<u>Explanation:</u>

For the given options:

Homogeneous mixtures are defined as the mixtures that appears uniformly throughout the solution and the particle size or shapes are not different. The composition remains constant throughout.

A solution is defined as the solution in which the components gets completely dissolved in it. Particles are evenly spread in these solutions. These solution does not scatter light falling on it. The composition remains constant throughout.

An amorphous solid is defined as the solid in which the constituent particles of the matter are arranged in the random manner. The composition remains constant throughout.

A heterogeneous mixture is defined as the mixture in which component are unevenly spread throughout the solution. The size and shape of the particles differ in these mixtures. These mixture scatter the light falling on it.  The composition do not remains constant throughout.

Compound is defined as the chemical specie which is formed by the combination of two or more different type of atoms. <u>For Example:</u> H_2O,O_2 etc...The composition remains constant throughout.

Hence, in heterogeneous mixture, the composition remains variable throughout.

4 0
4 years ago
Two gas molecules collide together in a box container. Which reaction accurately portrays the kinetic molecular theory?
Inga [223]
In this theory, gas molecules are deemed to be at constant random motion and have perfectly elastic collisions with each other. They bounce of each other. These particles are assumed to have a spherical shape. Also, there are no attractions between the molecules.<span />
8 0
4 years ago
Help only 4 minutes left
vesna_86 [32]

Answer: the answer is d

Explanation: hurry and answer

4 0
3 years ago
5) Calculate the molality of 0.210 mol of KBr dissolved in 0.075kg pure<br> water?
mrs_skeptik [129]

Answer:

2.8 m

Explanation:

From the question given above, the following data were obtained:

Number of mole KBr = 0.210 mole

Mass of water = 0.075 kg

Molality of KBr =?

Molality is simply defined as the mole of solute per unit kg of water. Mathematically, it can be expressed as follow:

Molality = mole of solute / Kg of water.

With the above formula, we can obtain the molality of the KBr solution. This can be obtained as follow:

Number of mole KBr = 0.210 mole

Mass of water = 0.075 kg

Molality of KBr =?

Molality = mole of solute / Kg of water.

Molality = 0.210 / 0.075

Molality = 2.8 m

Therefore, the molality of the KBr solution is 2.8 m.

4 0
3 years ago
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