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3 years ago

15. Discuss the various factors which affect the rate of evaporation. Latent heat

Chemistry

1 answer:

Georgia [21]3 years ago

8 0

Answer:

The correct answer is liquid B.

Explanation:

Latent heat of vaporization also known as the latent heat of evaporation. This latent heat transforms the particles of liquid into a gas without affecting its temperature. For example, the latent heat of evaporation for water is 40.8 kJ per mole, that is, 40.8 kJ per mole of heat is needed to transform water into vapor at 373 K.

It is known that latent heat of evaporation of a liquid is directly proportional to the cooling effect it generates, that is, more the latent heat of evaporation more will be its cooling effect. Thus, it is clear that liquid B will show the more cooling effect as the latent heat of evaporation of liquid B is more in comparison to liquid A. Thus, more heat will be captivated by liquid B and will generate more cooling effect in comparison to liquid A.

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A(n) ____ is a well blended mixture that appears to be a single substance

Savatey [412]

Answer:

Solution

Explanation:

Compound - a chemical substance made by elements of different densities to form a chemical union.

Element - Any one of the simple chemical substances that can't decompose in a chemical reaction

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3 years ago

Determine the number of protons, neutrons, and electrons for a neutral potassium-41 isotope.

Sphinxa [80]

Atomic number is equal to the number of electrons in a neutral atom. ... Niobium has an atomic number of 41. ... Determine the number of protons, electrons, and neutrons for each isotope described ... Potassium-41. 19

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3 years ago

For the elementary reaction NO3 + CO → NO2 + CO2 the molecularity of the reaction is ________, and the rate law is rate = ______

blagie [28]

Answer: For the elementary reaction $NO_3+CO\rightarrow NO_2+CO_2$ the molecularity of the reaction is 2, and the rate law is rate = $k[NO_3]^1[CO]^1$

Explanation:

Order of the reaction is defined as the sum of the concentration of terms on which the rate of the reaction actually depends. It is the sum of the exponents of the molar concentration in the rate law expression.

Elementary reactions are defined as the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical reaction.

Molecularity of the reaction is defined as the number of atoms, ions or molecules that must colloid with one another simultaneously so as to result into a chemical reaction. Thus it can never be fractional.

For elementary reaction $NO_3+CO\rightarrow NO_2+CO_2$ , molecularity is 2 and rate law is $rate=k[NO_3]^1[CO]^1$

3 0

3 years ago

Which of these does not describe the Wright brothers' first attempts at flight?

Vlad [161]

They mimicked the flight of birds.

3 0

3 years ago

HELP PLZ!!!

Marrrta [24]

The concentration of diluted solution is found to be 0.421 M

<u>Explanation:</u>

It is given that a stock solution (400 ml) should be diluted to 750 ml, we need to find the concentration of the diluted solution using the Law of Volumetric analysis,

V1M1 = V2M2

V1 being the volume of the stock solution = 400 ml

M1 being the molarity of the stock solution = 0.789 M

V2 being the volume of the diluted solution = 750 ml

M2 being the molarity of the diluted solution = ?

Now we have the molarity of the diluted solution by rearranging the above equation as,

M2 = $$\frac{V1M1}{V2}$

Now plugin the values as,

M2 = $$\frac{400 ml \times 0.789 M}{750 ml }$

= 0.421 M

So the molarity of diluted solution is found to be 0.421 M.

7 0

3 years ago