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3 years ago

The difference between non-spontaneous and spontaneous reactions is that non-spontaneous reactions:

Chemistry

1 answer:

mihalych1998 [28]3 years ago

3 0

Answer:

The answer to your question is: second option

Explanation:

occur faster than spontaneous reactions The speed of a reaction does not depend if it s spontaneous or not. This option is incorrect.

require outside interference to occur This option is true, non spontaneous reactions requiere heat, a catalizer or any interference to occur.

release free energy This option is not true, they could or not release energy

occur without an input of heat This option is false, most of non-spontaneous reactions requiere heat to occur.

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A sample of gas has its number of molecules quadrupled, its Kelvin temperature doubled, and its volume tripled. By what factor h

steposvetlana [31]

The new pressure changed relative to the original by a factor of 8/3.

<h3>What is the change in the pressure?</h3>

Using the ideal gas equation;

PV = nRT

P = pressure

V = volume

n = number of moles

R = gas constant

T = temperature

P1 = nRT/V

P2 = 4n * R * 2T/3V

Hence;

P2/P1 = 4n * R * 2T/3V ÷ nRT/V

P2/P1 = 4n * R * 2T/3V * V/nRT

P2/P1 =4 * 2/3

= 8/3

Learn more about ideal gas law:brainly.com/question/13821925

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2 years ago

if scientist had tried to repeat Thomson's experiment and found that they could not, would Thomson's conclusion still have been

Mariulka [41]

It wouldn’t, it must be at least 96% close to what Thomson did to make the Conclusion valid, it must be repeated the same and tested by another person at least 3 times. Hope this helps, mate! :)

3 0

3 years ago

Each step in the following process has a yield of 90.0 %. CH 4 + 4 Cl 2 ⟶ CCl 4 + 4 HCl CCl 4 + 2 HF ⟶ CCl 2 F 2 + 2 HCl The CCl

Rainbow [258]

Answer:

4.86 moles of HCl

Explanation:

1. First write the balanced chemical equations involved in the process:

$CH_{4}+_4Cl_{2}=CCl_{4}+_4HCl$

$CCl_{4}+_2HF=CCl_{2}+F_{2}+_2HCl$

2. Calculate what amount of $CCl_{4}$ is formed in the first reaction.

$3.00molesCH_{4}*\frac{1molCCl_{4}}{1molCH_{4}}=3.00molesCCl_{4}$

As the yield of each reaction is 90.0%, the amount of $CCl_{4}$ produced is the following:

$3.00molesCCl_{4}*0.90=2.7molesCCl_{4}$

3. Calculate the amount of HCl produced.

$2.7molesCCl_{4}*\frac{2molHCl}{1molCCl_{4}}=5.4molesHCl$

The total amount of HCl produced with a 90.0% yield is:

$5.4molesHCl*0.90=4.86molesHCl$

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3 years ago

What does a circle filled in with a dark color represent in a pedigree chart?

Alina [70]

A circle or square that is not shaded indicates that a person neither expresses the trait nor is a carrier of the trait. within a family, is used. In a pedigree, a circle represents a female, and a square represents a male. A filled-in circle or square shows that the individual has the trait being studied.

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3 years ago

The atomic and mass numbers for four different atoms are given below. Which two are isotopes of the same element?

Dmitrij [34]

The correct option is B AND C.
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Thus, isotopes has the same number of protons but differ in number of neutrons. Due to this fact, isotopes always have the same atomic number but different mass number. You will notice that the atomic number given for elements B and C are the same [101].

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4 years ago