CHEMISTRY HIGH SCHOOL

A transmutation reaction must always involve a(n) ____.a. change in the number of electrons in the atom
b. decrease in the number of neutrons in the nucleus of an atom
c. increase in the number of neutrons in the nucleus of an atom
d. change in the number of protons in a nucleus of an atom

Answers

Answer 1
Answer: A transmutation reaction must always involve a change in the number of protons in a nucleus of an atom. A transmutation reaction involves a change in the structure of atomic nuclei and hence may be induced by a nuclear reaction. The correct answer is letter "D." I hope this helps. 
Answer 2
Answer:

Answer: Option (d) is the correct answer.

Explanation:

Transmutation is a process which brings changes in the nucleus occur because of change in the number of protons of an atom. Therefore, the atom  formed will have different properties from its parent atom.

For example, ^(27)_(13)Al + ^(4)_(2)He \rightarrow ^(30)_(15)P + ^(1)_(0)n

A transmutation can be natural or artificial in nature.

Thus, we can conclude that a transmutation reaction must always involve a change in the number of protons in a nucleus of an atom.

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Given the reaction at equilibrium:N2(g) + 3H2(g) -->2NH3(g) + 91.8 kJ
What occurs when the concentration of H2(g) is increased?
(1) The rate of the forward reaction increases and the concentration of N2(g) decreases.
(2) The rate of the forward reaction decreases and the concentration of N2(g) increases.
(3) The rate of the forward reaction and the concentration of N2(g) both increase.
(4) The rate of the forward reaction and the concentration of N2(g) both decrease.

Answers

If the concentration of H_2 (g) is increased, the rate of the forward reaction increases and the concentration of N_2 (g)decreases.

Le Chartelier principle

The principle states that reactions in equilibrium being disturbed by factors such as temperature, the concentration of species in the reaction, etc, will experience a shift in the equilibrium so as to annul the effects of the disturbance.

Thus, adding more of the reactants ( H_2 (g) to the reaction will see more  products being synthesized. This means more  N_2 (g) will be consumed and its concentration will decrease accordingly.

More on Le chartelier principle can be found here: brainly.com/question/12099569

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(1) The rate of the forward reaction increases and the concentration of N2(g) decreases.
N2 is constant 

Which of these statements best describes the relationship difference between minerals and rocks

Answers

The statement that best describes the relationship difference is most rocks are made out of minerals.

Answer:

rocks are made out of minerals.

Explanation:

Earth is divided into 24? A) equators
B) coordinates
C) degrees
D) time zones

Answers

Answer is: D) time zones.

Earth is divided into 24 timezones.

Most timezones are exactly one hour apart.

Timezone is a region on Earth bounded by lines of longitude.

Coordinated Universal Time (UTC) is the basis for modern civil time.

For example, UTC±00:00 is the Western European Time (Ireland, Portugal and UK).

UTC+01:00 is Central European Time, West Africa Time.

The earth is divided in 24 time zones. The correct option is D.

What is the earth divided into?

The earth is divided into 24 time zones. Each time zone represents a region where the same standard time is used. These time zones are approximately 15 degrees of longitude wide and are centered on the Prime Meridian (0 degrees longitude).

As the Earth rotates 360 degrees in 24 hours, each time zone covers roughly 1 hour of time difference from its neighboring zones. Time zones are crucial for coordinating activities and scheduling across different regions, ensuring global synchronization and smooth functioning in a world that spans multiple longitudes.

Read more about earth here: brainly.com/question/25624188

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Which two statements are true for both compounds and mixtures?A. Their particles are held together by chemical bonds.

B. They are made up of more than one type of atom.

O C. They can be separated into two or more elements.

O D. Their particles all have the same chemical formula.

Answers

Answer:

B and C

Explanation:

A. Their particles are held together by chemical bonds.

This option is incorrect for both compounds and mixtures. It is only true for Compounds.

B. They are made up of more than one type of atom.

This is correct. Both compounds and mixtures consists of different atoms of elements.

C. They can be separated into two or more elements.

This option is correct. Compounds are broken down into elements through chemical means.

D. Their particles all have the same chemical formula.

This is wrong. Mixtures do not have chemical formula

Answer:a and c

Explanation:

apex

What song gets you in your feels the most? mines what could've been by gone west

Answers

Answer:def has to be someone you loved by Lewis Capaldi

Explanation:

Answer:someone you loved

I'm going under and this time I fear there's no one to save me

This all or nothing really got a way of driving me crazy

I need somebody to heal

Somebody to know

Somebody to have

Somebody to hold

It's easy to say

But it's never the same

I guess I kinda liked the way you numbed all the pain

Now the day bleeds

Into nightfall

And you're not here

To get me through it all

I let my guard down

And then you pulled the rug

I was getting kinda used to being someone you loved

I'm going under and this time I fear there's no one to turn to

This all or nothing way of loving got me sleeping without you

Now, I need somebody to know

Somebody to heal

Somebody to have

Just to know how it feels

It's easy to say but it's never the same

I guess I kinda liked the way you helped me escape

Now the day bleeds

Into nightfall

And you're not here

To get me through it all

I let my guard down

And then you pulled the rug

I was getting kinda used to being someone you loved

And I tend to close my eyes when it hurts sometimes

I fall into your arms

I'll be safe in your sound 'til I come back around

For now the day bleeds

Into nightfall

And you're not here

To get me through it all

I let my guard down

And then you pulled the rug

I was getting kinda used to being someone you loved

But now the day bleeds

Into nightfall

And you're not here

To get me through it all

I let my guard down

And then you pulled the rug

I was getting kinda used to being someone you loved

I let my guard down

And then you pulled the rug

I was getting kinda used to being someone you loved

A laboratory requires 2.0 L of a 1.5 M solution of hydrochloric acid (HCl), but the only available HCl is a 12.0 M stock solution. How could you prepare the solution needed for the lab experiment? show all work to find your answer

Answers

Answer: The volume of stock HCl solution required to make laboratory solution will be 0.25L

Explanation:

To calculate the volume of stock solution required to make the laboratory solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of stock solution.

M_2\text{ and }V_2 are the molarity and volume of laboratory solution.

We are given:

M_1=12M\nV_1=?L\nM_2=1.5M\nV_2=2L

Putting values in above equation, we get:

12* V_1=1.5* 2\n\nV_1=0.25L

Hence, the volume of stock HCl solution required to make laboratory solution will be 0.25L
The amount of the solute is constant during dilution. So the mole number of HCl is 2*1.5=3 mole. The volume of HCl stock is 3/12=0.25 L. So using 0.25 L stock solution and dilute to 2.0 L.
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