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Gala2k [10]
3 years ago
5

Assume that the potential energy of the products in a chemical reaction is 60 kilojoules. this reaction would be exothermic if t

he potential energy of the reactants were
Chemistry
1 answer:
MariettaO [177]3 years ago
5 0
Assume that the potential energy of the products in a chemical reaction is 60 kilojoules. this reaction would be exothermic if the potential energy of the reactants were higher.
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Science does not include<br><br> beliefs or opinions<br> theories<br> laws<br> conclusions
denpristay [2]
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3 years ago
What volume of 3.00 M HCl will form a solution with an acidic pH when mixed with 100 mL of 3.00 M NaOH
Maksim231197 [3]

<u>Answer:</u> The volume of acid should be less than 100 mL for a solution to have acidic pH

<u>Explanation:</u>

To calculate the volume of acid needed to neutralize, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HCl

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is NaOH

We are given:

n_1=1\\M_1=3.00M\\V_1=?mL\\n_2=1\\M_2=3.00M\\V_2=100mL

Putting values in above equation, we get:

1\times 3.00\times V_1=1\times 3.00\times 100\\\\V_1=\frac{1\times 3.00\times 100}{1\times 3.00}=100mL

For a solution to be acidic in nature, the pH should be less than the volume of acid needed to neutralize.

Hence, the volume of acid should be less than 100 mL for a solution to have acidic pH

7 0
3 years ago
What is the concentration of pb 2 ions in a solution prepared by adding 5. 00 g of lead(ii) iodide to 500. ml of 0. 150 m ki? [
sashaice [31]

37.1×10−8M is the concentration of pb 2 ions in a solution prepared by adding 5. 00 g of lead(ii) iodide to 500. ml of 0. 150 m ki? [ k sp(pbi 2) =1. 4 × 10 –8] by common ion effect.

A phenomenon known as the "common ion effect" allows for the modification of a salt's molar solubility by adding another salt in which one ion dissociates in solution and maintains equilibrium with the undissociated salt.

The term "common-ion effect" describes the reduction in solubility of an ionic precipitate caused by the addition of a soluble molecule that shares an ion with the precipitate to the solution. Le principle for the equilibrium response of ionic association/dissociation leads to this behavior.

To learn more about the "common-ion effect" please visit-
brainly.com/question/13194653
#SPJ4

4 0
2 years ago
Rabbit is one of the sweetest animal on world ....change it into positive degree​
11Alexandr11 [23.1K]

Answer:

rabbit is one of the sweet animal

in the world

5 0
3 years ago
The volume of water in a beaker was 315 mL. After 7 days, the volume of the water was 300 mL. Kayla says that a chemical change
Monica [59]

Answer is "A".

Explanation;

Physical changes mean an arrangement of particles of a given substance without producing new substance but changes in physical form of the substance.

<em>Example :</em> vaporization of water ( water goes its gaseous phase from liquid form).

Chemical changes mean an arrangement of particles while forming new substance.

<em>Example : </em>heating of CaCO₃. (In this process CaO and CO₂ are formed).

In this problem, the volume of water has decreased. Hence, it can be said that this is an example of physical changes due to not forming of new substance.

3 0
3 years ago
Read 2 more answers
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