Question 25:-
A, YA are two isotopes of element A.
Difference between the number of neutrons
in the isotopes is?
Answers
Answer : The correct option is, (c) 1
Explanation :
Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.
Isotope notation : It is also called as nuclear notation. In isotopic notation we can easily determine an isotope's mass number, atomic number, the number of neutrons and protons in the nucleus.
The general isotopic representation of an atom is: \(_Z^A\textrm{X}\)
where,
Z = Atomic number of the atom
A = Mass number of the atom
X = Symbol of the atom
As we are given two isotopes:
\(^{y}_{x}A\) and \(^{y+1}_{x}A\)
From this we conclude that,
The number of neutrons in isotope \(^{y}_{x}A\) = y-x
The number of neutrons in isotope \(^{y+1}_{x}A\) = (y+1)-x
Difference between the number of neutrons in the isotopes = [(y+1)-x] - [y-x] = 1
Therefore, the difference between the number of neutrons in the isotopes is 1.
Related Questions
When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.
Answers
Answer:
Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.
Table B: Calculation of Kinetic Energy (KE)
Table B: Calculation of Kinetic Energy (KE)
Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500
To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.
For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2
Perform similar calculations for the other velocities and record the results in Table B.
Answer:
Explanation:mass of the bottle in each case is M = 0.250 kg
now as per given speeds we can use the formula of kinetic energy to find it
1) when speed is 2 m/s
kinetic energy is given as
2) when speed is 3 m/s
kinetic energy is given as
3) when speed is 4 m/s
kinetic energy is given as
4) when speed is 5 m/s
kinetic energy is given as
5) when speed is 6 m/s
kinetic energy is given as
what is the highest temperature the Hadron Collider gets? please only use ur mind whoever gets it right first gets a surprise
Answers
Answer:
7.2 trillion degrees Fahrenheit
Candice did an experiment where wondered if temperature affects how cheese molds. She put a piece of cheese next to a different heat lamp and then measured how much mold was on each cheese. What is the DEPENDENT variable?
Answers
Please help Im really confused pls i will mark brainly
Answers
Answer:
Explanation:b: water ballon and time
c:bottle 6
How would you measure 20 grams of salt? Describe how you did this.
(this is due by tmr so someone please help!)
Answers
Answer:
I would just find a measuring cup and do it that way it's the easiest way
What does the red represent on the model? *
the oxygen molecule
the oxygen atom
the element hydrogen
Answers
List two examples of objects at home that use chemical energy and describe what the chemical energy is being transformed into.
Answers
Featured snippet from the web
Wood: Combustion reaction converts chemical energy into light and heat. Petroleum: Can be burned to release light and heat or changed into another form of chemical energy, such as gasoline. Chemical batteries: Store chemical energy to be changed into electricity.
Chemical energy refers to a form of potential energy stored in atoms, two home objects which utilizes chemical energy include wood and batteries
Energy in wood are stored in form of chemical energy and may be transformed to thermal energy which is used for cooking and heating purposes. Similarly, chemical energy is stored in battery cells which stores charge and may be converted into electrical energy to power appliancesTherefore, other forms of chemical energy include petroleum, food and so on.
Learn more :https://brainly.com/question/11507235?referrer=searchResults
Pls help meh......Due at 3:00
What type of elements bond covalently?
What are two covalently bonded atoms called?
When drawing an electron dot structure, should you pair up as many electrons as you can around their original atom or should you leave them single?
How does this help you discover how many bonds they will form?
If a molecule has a triple bond, how many pairs of electrons does it share? How many total electrons is that?
What is a molecular compound?
What are properties of molecular compounds?
Why are molecular compounds poor electrical conductors?
How do bonded atoms become partially charged?
What is a nonpolar bond?
What is a polar bond?
Do you think water in the Dead Sea would conduct electricity? Why?
Answers
Answer: most molecular compounds poor conductors because they do not have charged particles to carry current.
Explanation:
When an organism uses chemical energy to move, some of it is lost as (blank) energy.
(science middle school answer pls)
Answers
Answer:
When an organism use chemical energy to move, some of it is lost as metabolic heat.
The term chemical energy is defined as the energy which is stored in the bonds of chemical compounds. It is given in the chemical reaction and mostly produces heat as a by-product, known as an exothermic reaction.
Energy changes as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are taken by organisms from the next level.
Thus, Metabolic heat is lost when an organism uses chemical energy to move.
...
Answer:
When an organism use chemical energy to move, some of it is lost as metabolic heat.
I think this is it, hope this helps!
Which one is right pls help
Answers
Answer:
Physical Properties
Explanation:
7. Which has more thermal energy, the tub or the tea cup? Explain
Answers
Answer: The tea cup
Explanation: It is the tea cup because when you touch a tea cup, the energy is going into your hand. Your hand gets hot. That is thermal energy.
Answer:
i would say the tub
Explanation:
i dont have one cause it just depends on what is in the tub
What kind of rocks would you expect to see on Mars? What evidence supports your response?
Answers
The picture below is a great example of __________ biodiversity.
high
low
there is no way of knowing without counting
Answers
Chemical Weathering Rocks are changed by chemical and physical weathering. During chemical weathering, the composition of the rock is changed. Extreme heat and pressure within Earth can also cause rocks to change chemically. Physical weathering is the breaking down of rock by wind, water, ice, temperature change, and plants. It changes the shape and size of rocks, but it does not change their properties.
circle each example of chemical weathering
•Shale is worn into small pieces by the wind.
• Sandstone experiences heat and pressure and becomes quartzite.
• Calcium carbonate dissolves.
• Rocks break into pieces as they tumble down a mountain.
Answers
An example of chemical weathering are;
Sandstone experiences heat and pressure and becomes quartzite. Calcium carbonate dissolves.What is Chemical Weathering ?Chemical Weathering can be described as the type of weathering that do take place due to the breaking down of the rock particles into smaller pieces which is usually as a result of chemical process.
It should be noted that when the process is taking place it scould be due to the Extreme heat and pressure which can affect the composition of the particles and as a result of this there could be formation of products from the break down.
Learn more about Chemical Weathering at:
https://brainly.com/question/18357253
#SPJ1
Sandstone experiences heat and pressure and becomes quartzite
Calcium carbonate dissolves
These are both examples of chemical weathering because the composition of these things changed. When shale is worn into small pieces, it is still shale, and rocks breaking into pieces as they tumble down a mountain are both examples of physical weathering because the weathering is not changing the composition of the rock.
How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
Which of the following points is/are true for plasma?
(1) It is a very good conductor of electricity.
(2) Gas is transformed into plasma state.
(3) It is influenced by magnetic and electric fields.
(4) All of the choices
Answers
Answer:
4 all of the choices. the rest of the answers are correct so it's all of the choices
Can someone verify this for me? It’s on the photo!!
Answers
Answer: The answer would be D
Glass
Explanation: Good luck!
Good luck on it : )
Which type of data would be considered qualitative data?
mass of a seed
volume of water
height of a plant
smell of a plant
Answers
(added emojis cause it said my answer wasn’t long enough)
Why are cellular respiration and photosynthesis opposite processes?
This is in science for 7th grade
Answers
Answer:
photosynthesis removes carbon dioxide from the atmosphere while respiration puts back carbon dioxide.
Explanation:
hope this helps
pls help me with this science question
Answers
Answer:
D because as the seafloor grows wider, the continents on the opposite sides of the ridge move away from each other
What do you know about the sun's motion based on the nebular hypothesis model?
a
There is not relationship between planetary movement and the sun.
b
The faster the sun moves, the faster the planets travel in their orbits.
c
The sun and planets both move in the same orbits
d
The sun rotates in the same direction as the planets move around the sun
Answers
What is the Uncontrolled variables/limitations for this science expirement? Does the shape of an ice cube affect how quickly it grows? Need help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAP
Answers
I hope this helps!
Fish are invertebrates, and all animals are equal so does this mean that each individual animal is equivalent?
A. no
B.yes
C.kinda.
D.none of the above
Answers
Answer:no
Explanation:
because there are different bone structures to different animals
ex.mammals aren't invertabres
Answer:
A. no
Explanation:
The other person is right.
Suppose you are shooting a basketball toward a hoop. As the ball rises in the air, its ---------------- energy increases and its ---------------------------- decreases.
Answers
Answer:
Suppose you are shooting a basketball toward a hoop. As the ball rises in the air, its -------Potential --------- energy increases and its -----------kinetic----------------- decreases.
Explanation:
Kinetic energy is the energy of movement or change. Potential energy is the energy a system has as a result of being able to undergo some change. ... As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.
potential//energy by position
I'm in the shower right now just tell me something interesting to study and learn about ill give 100 points
Answers
Answer:
Study forms of religion in ancient civilizations
Explanation:
olmecs disappearance or Celtic culture interesting
Study of global warming
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
Please help, I don't get what does this means
3. Name the compound sodium makes with the following elements.
(a) Calcium carbonate:
Answers
Answer: hydrogen-carbonate.
Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.
I hope everyone finds this helpful
how to use a microscope> Everything I need to know
Answers
Always keep your microscope covered when not in use.
Always carry a microscope with both hands. Grasp the arm with one hand and place the other hand under the base for support.
Step 1: Set Up the Microscope. ...
Step 2: Clean the Lens. ...
Step 3: Prepare a Slide. ...
Step 4: Insert the Slide. ...
Step 5: Set Up for Viewing. ...
Step 6: Set the Light Control. ...
Step 7: Focus the Microscope. ...
Step 8: Increase Magnification.
Answer:
Keep in mind this changes from microscope to microscope.
Explanation:
On most classroom microscopes, there will be two knobs on either side of the scope. These will increase or decrease the height of the "stage", which is how you "focus" the microscope. The larger knob will move the stage the most, and thus, is called the coarse focus. The smaller knob is called the fine focus, and, you guessed it, will move the stage the least. There are usually three "objective lenses". Each will have a different magnification and will be listed on the lens itself. It rotates around the "revolving nosepiece". MAKE SURE THAT THE SLIDE IS LOWERED BEFORE ROTATING THE LENSES!!!! If you don't you WILL break the slide and you WILL get death looks from the teacher.
On the stage, there are two clips. They move NOT up and down, but they spin. what you want to do is to move the slide into the clips. They will not break if you do not bend them more than what the slide will bend them to.
The technique for focusing the microscope is really easy once you do it a few times. After making sure that the microscope is plugged in and the light on and the slide and lens in the lowest position/magnification (!) move the coarse focus knob so that the object in the slide is just visible. Once you do that, from there use the fine focus knob to make the object most visible.
These instructions vary slightly from model to model of microscope, but the picture below is very accurate and everything I warned you about is for all microscopes.
A model of an atom shows eight electrons in rings that represent different energy levels. How many electrons are in each energy level?
A. two in the first energy level, six in the second energy leve
B. eight in the first energy level, zero in the second energy level
C. zero in the first energy level, eight in the second energy level
D. four in the first energy level, four in the second energy level
Which statement about an atom is correct?(1 point)
A. The neutron has no charge and is found outside of the nucleus.
B. The electron has a negative charge and is found outside of the nucleus.
C. The proton has no charge and is found in the nucleus.
D. The neutron has a negative charge and is found in the nucleus A student wants to draw a model of an atom.
Which statement describes how to find the number of neutrons to include in the model?(1 point)
A. Subtract the atomic number from the mass number.
B. Add the number of electrons to the number of protons.
C. Subtract the number of electrons from the number of protons.
D. Add the atomic number and the mass number.
What is the atomic number of an atom?(1 point)
A. the number of particles outside the nucleus
B. the number of particles in the nucleus
C. the number of neutrons
D. the number of protons
PLEEEEEEEEEEEEEEASSSSSEEEEEEE HELLLLP ASAPPPPPPPPPPPP...........................
Answers
Energy levels are arranged in increasing order of magnitude in accordance with the Bohr model.
The correct sequence of answers is as follows;
1) two in the first energy level, six in the second energy level
2) The electron has a negative charge and is found outside of the nucleus.
3) Subtract the atomic number from the mass number.
4) the number of protons
An atom contains a nucleus and electrons arranged in energy levels outside the nucleus. Each energy level is filled with electrons.
The first energy level contains only two electrons, subsequent energy levels contain a maximum of eight electrons.
The proton is positively charged, the neutron has no charge and the electron is negatively charged. The proton and neutron are found inside the nucleus while the electrons are negatively charged and found outside the nucleus.
The mass number is the sum of the number of protons and neutrons. hence the number of neutrons is the difference between the mass number and the number of protons.
The number of protons in an atom is its atomic number.
Learn more: https://brainly.com/question/14156701
What happened when the two substances were combined together in the cup? (highlight one)
The substances changed into different substances.
The substances did not change into different substances.
I am not sure if the substances changed into different substances.
Explain your answer using evidence from the Sim.
Answers
Based on evidence from Sim, when two substances were combined they did not change into different substances.
Here the word Sim is used to describe the process simulation. Simulation is defined as when two substances combined they do not change into different substances.
They just combine together and form a new substance.
Let us understand it as the first substance is liquid and the second substance is solid then when we combine both of them they form a new mixture but do not change their property.
The mixture is still liquid but it also has some properties of solid substance.
For more details about Sim,
https://brainly.com/question/31764333
The substances did not change into different substances.
Based on the information provided in the question, there is no evidence or indication of any chemical reaction or change in the substances when they were combined in the cup. The question does not mention any observations or effects that would suggest a chemical transformation.
If there were a chemical reaction or change, it would typically be accompanied by observable signs such as color change, gas production, temperature change, or formation of a precipitate. However, since the question does not provide any evidence or observations of such changes, we can conclude that the substances did not undergo any chemical transformation when combined.
It is important to note that without additional information or details about the substances and their behavior, it is not possible to make definitive conclusions. However, based on the given information, the most reasonable conclusion is that the substances remained unchanged when combined in the cup.
To learn more about substances, here
https://brainly.com/question/13320535
#SPJ2