why do atoms of the same element always have the same number of protons but sometimes have different mass number? What do you call these atoms?

Answers

Answer 1

Answer:

However, some helium atoms have more or less than two neutrons. Atoms with the same number of protons but different numbers of neutrons are called isotopes. Because the number of neutrons can vary for a given element, the mass numbers of different atoms of an element may also vary.


Related Questions

Cathy's favorite salad dressing is a liquid with particles of salt, pepper, and garlic. When comparing a spoonful of salad dressing to a cell, what would the liquid be equivalent to? What would the particles be equivalent to?

Answers

Answer:

Liquid equivalent to "cytoplasm" and the particles equivalent to "organelles".

Explanation:

While comparing a liquid salad dressing to a cell, the liquid will be equivalent to "cytoplasm" because cytoplasm is a thick solution present in each cell that made up of water, salts, and proteins.

The particles would be equivalent to "organelles" because as particles float in liquid salad adding flavours to the salad likewise organelles are present in a cell floating in the cytoplasm that performs a specific function.

Hence, the correct answer is " liquid will be equivalent to "cytoplasm" and the particles will be equal to "organelles".

If a sample originally had 120 Adams of carbon 14 how many atoms will remain after 17,190 years

Answers

Answer:

15 atoms

Explanation:

About 15 atoms out of the 120 Adams would remain.

Generally, the half-life of a substance is the time it takes for one-half of that substance to disintegrate.

Carbon 14 has a half-life of approximately 5,730 years. 17,190 years means that the sample had stayed for 17,190/5,730 which is equal to 3 carbon-14 half-lives.

Out of 120 Adams,

the first half-life will reduce 120 to 60 Adamsthe second half-life will reduce 60 Adams to 30 Adamsthe third half-life will reduce 30 Adams to 15 Adams.

Hence, at the end of the 17,190 years, approximately 15 Adams would remain.

Please respond quickly!!! This is due soon!

Identify the natural processes that occur on the earth's surface to make and destroy rocks.

Answers

The physical processes on Earth create constant change. These processes—including movement in the tectonic plates in the crust, wind and water erosion, and deposition—shape features on Earth's surface.

Answer:

You learned about the three rock types: igneous, sedimentary, and metamorphic. You also learned that all of these rocks can change. In fact, any rock can change to become any other type of rock. These changes usually happen very slowly. Some changes happen below Earth’s surface. Some changes happen above ground. These changes are all part of the rock cycle. The rock cycle describes each of the main types of rocks, how they form, and how they change.

The figure below shows how the three main rock types are related to each other (Figure below). The arrows within the circle show how one type of rock may change to rock of another type. These are the processes that change one rock type to another rock type.

Explanation:

11. One side of a DNA molecule contains the
following sequences of bases. Write the
complementary sequence of each DNA strand in
the space provided.

Answers

1. TAGCCA

2.CGGTTA

3.GGTACT

Explanation:

Each letter has its own opposite letter. The pairs are A always the opposite of T. G is always the opposite if C

Unzips the DNA strand by breaking hydrogen bonds

Answers

HELICASES unzips the dna at the beggening of replication to then break the hydrogen bonds

HELP ASAP
Which statement is true about scientific theories and laws?
A theory can never become a law
If enough evidence is found for theory, it will become a law
Theories have more proof than laws
Only laws are widely accepted by the scientific community

Answers

Answer:

A theory can never become a law

Explanation:

The rest are wrong

Theories can change

Laws cannot

All cells in an organism have the same copy of DNA, because they all came from the same orginal cell.
True Or False

Answers

the answer would be true

How are herbivore and carnivore alike

Answers

Answer:

They both obtain energy by consuming other organisms.

Explanation:

Hope this helps<3

Answer:they both gather energy from other organisms.

Explanation:

3. Explain how the Gulf Stream (a warm ocean current) effects the climate of Northern Europe.

Answers

Answer:

These currents transfer heat from the tropics to the polar regions, influencing local and global climate..

The warm Gulf Stream originating in the tropical Caribbean, for instance, carries about 150 times more water than the Amazon River. The current moves along the U.S. East Coast across the Atlantic Ocean towards Europe ...The heat from the Gulf Stream keeps much of Northern Europe significantly warmer than other places equally as far north.

Answer:

The Gulf Stream, located in the north Atlantic Ocean, has an important effect on climate, transportation by sea, and the circulation of nutrients and waste in the ocean. It works together with the North Atlantic Drift to bring warm air from equatorial regions across Europe. This changes Europe’s climate by providing mild temperatures and more rain. As a result, farmers can grow more crops, and fewer freezing temperatures damage goods.

Explanation:

I had a similar question and this was the answer.

Which of the following is not reflective of Albert Bandura's view on personality? ○Behavior is determined solely by the environment.
○ One's thoughts and behavior can influence the environment.
○Individuals can manipulate their environment to suit personal needs. ○Environment can influence one's behavior through observational learning.

THE ANSWER IS THE FIRST CHOICE-
**Behavior is determined solely by the environment.​

Answers

Answer:

○Behavior is determined solely by the environment.

Explanation:

The above statement is true which happens to be not a reflective of Albert Bandura's view on personality. On the other hand, ones view and personality happens to be influenced by so many factors in which the environment happens to be one of them.

Answer:

the first option

an adaptation is A a trait that helps an organism survive in its enivironment

Answers

Answer:

True

Explanation:

The given statement is true. An adaptation is any characteristic that helps an organism survive or reproduce. As the environment changes, organisms that inhabit it have to change as well in order to survive. The changes they go through can be physical or behavioral. For example, giraffes have very long necks so that they can reach the leaves of tall trees, and birds have very light bones so that they can fly. This is how species continue to thrive for a very long time.

Alejandro wants to find the speed of his car in meters per second. His car traveled 50 cm. It took 5 seconds to travel 50 cm. How fast did his car go?

Answers

Answer:

0.1m/s

Explanation:

Speed can be calculated using the formula;

Speed (m/s) = distance (m) ÷ time (s)

According to the information provided in this question, Alejandro's car travels 50cm in 5seconds i.e. the distance traveled is 50cm and the time is 5s.

However, the question requires the distance to be in metres (m). We, therefore, need to convert 50cm to m by dividing by 100.

100cm = 1m

50cm = 50/100

= 0.5metres.

Speed = 0.5/5

Speed = 0.1m/s.

The car travels as fast as 0.1m/s.

what does it mean to live in Exponential Times?

Answers

Answer: If something grows exponentially it means really, really fast. Whatever happens as a consequence it hits up really, really hard in the last moment.

Explanation:

Is nature or nurture more important

Answers

Answer:

Yes

Explanation:

cus

it keeps us alive

The answer is completely subjective. I’ll assume you are talking about raising children simply because this vocabulary is often used in that case.

Nature can go from describing events out of our control, innate feelings, to describing the area we are raised in. Nature can go a long way with raising kids, in comes the theory’s of the “murder gene.” The aforementioned gene is a theory on the “murderous” behaviors in children sociopaths, or psychopaths. This theory exists because of some unexplainable behaviors the children have that were not taught, like hurting animals and lack of empathy.

In a more lose interpretation of Nature it can mean the area children are raised in. Like the different between a trailer park and a mansion. But generally Nature refers to innate, uncontrollable, behaviors.


On the other hand Nurture refers to the actual raising of the child. Referring back to the “murder gene” the question is if you could reverse the effects of the gene in children based on how you raise them. Nurture is also an argument for how kind you should be to your child as they are growing.

Personally I think Nurture is more important, but in all actuality a good balance is best.

The purpose of the control is to ..?

Answers

The control group is used as the constant variable

HURRY. Why is transcription said to be unidirectional?

Answers

Answer:

Transcription is unidirectional because you are copying only ONE side of the DNA. Remember that DNA is a double stranded helical structure. One strand of DNA is complementary to the other strand.

Explanation:

What happens when two
protons get close together?
A. They are attracted to each other.
B. They repel each other.
C. Nothing happens.

Answers

Answer:

they repel each other

Explanation:

in basic chemistry:

protons repel other protons

protons are attracted to electrons

electrons repel electrons

Answer:

B. they repel

Explanation:

I'm learning the same thing lol

Can u pls help me this is due today I will give brainliest

Answers

Answer:

exmaple z

Explanation:

it is the heaviest so it would require more to push

this is physics not bio btw

work= force x distance

answer: 8kg

explanation: weight is a force, and the distance is equal in all examples...so the heaviest object is going to need the most work to pull through the distance

List 3 organisms that are made of plant cells:

Answers

Answer:

Seed Plants

Ferns

Mosses

Thallophytes

Explanation:

A patient in the emergency room has been in cardiac arrest for three minutes before her heart is restarted. What is the most likely consequence of this episode?

Answers

Answer:

There will be few if any complications.

Explanation:

Just took the unit test review

Answer:

there will be few if any consequences

Explanation:

just finished unit test review, hope this helps <3

brainliest pls? :)

A model for how the solar system formed must explain
observations and reasoning. Identify each statement as
an example of an observation or reasoning. If a statement
is false or invalid, identify it as such.
a. Most of the mass of the solar system is in the sun.
b. The sun is composed primarily of hydrogen and
helium.
c. The sun formed more than 13.8 billion years ago when
the universe formed.
d. Most objects in the solar system orbit the sun in the
same direction.
e. If most of the mass of the solar system is in the sun
and the sun is mostly hydrogen and helium, then the
solar system must primarily be hydrogen and helium.

Answers

Answer:

The correct answer would be -

a. observation

b. observation

c. invalid

d. observation

e. reasoning

Explanation:

Any observation or statement form or generated by the understanding and nothing any event. The first statement is formed by observing the sun and the rest of the solar system and comparing its mass. The second and fourth statement is also observations made on fact or noticing the.

The fifth statement is reasoning as it deriving something from logic and fact. The third statement is invalid as the universe made before the sun.

A. Of the 100 cells shown, how many are in the process of dividing?

Answers

Answer:

Can you show me a picture? I can't answer your question without being able to see a picture or a graph of some sort. Thanks!

Explanation:

If the food on the island is small seeds, what finch is best adapted? Explain why

Answers

Answer:Adaptation in Darwins Finches. Beak depth, which is correlated with body size and the ability to crack larger seeds, varies according to drought conditions: plants produce fewer, harder seeds in dry years and more, softer seeds in wet years. Only larger birds with deeper depths survive in drought years.

Explanation:

An earthquake happened in a area almost everyone in the area feels the earthquake, but no buildings are damaged what is the intensity of the earthquake in the area?​

Answers

The intensity would be a 4

Put the following in the correct order from smallest (#1) to largest (9)

Organ
[ Select ]

Tissue
[ Select ]

Atom
[ Select ]

Organelle
[ Select ]

Macromolecule
[ Select ]

Cell
[ Select ]

Organ system
[ Select ]

Molecule
[ Select ]

Organism

Answers

Answer:

atom

Explanation:

Match each underlined word to its correct meaning based on the context of the sentence. Tom had long been picking his way cautiously through this treacherous forest; stepping from tuft to tuft of rushes and roots, which afforded precarious footholds among deep sloughs. It was a dreary memento of the fierce struggle that had taken place in this last foothold of the Indian warriors. He was sulky, however, and would not come to terms: she was to go again with a propitiatory offering, but what it was she forbore to say. At this propitious time of public distress did Tom Walker set up as a usurer in Boston.

Answers

Answer:

A. Tom had long been picking his way cautiously through this treacherous forest;  stepping from tuft to tuft of rushes and roots, which afforded precarious footholds among deep sloughs.  - 3.dangerous.

B. It was a dreary memento of the fierce struggle that had taken place in this last foothold of the Indian warriors. - 4.bleak.

C. He was sulky, however, and would not come to terms: she was to go again with a propitiatory offering,  but what it was she forbore to say. - 2.conciliatory.

D. At this propitious time of public distress did Tom Walker set up as a usurer in Boston. - 1.favorable .

Explanation:

The given underlined words in each sentence are-

1. "Precarious" refers to something unstable, unconfirmed, dangerous, uncertain, unreliable. So, when used in the given sentence, it suggests the dangerousness of the foothold that Tom had to depend on.

2. The word "dreary" is also used for something dull, uninteresting, bleak. It is used to describe the banal, cheerless memento of the fight the Indian warriors had given.

3. "Propitiatory" is another word used to describe something that is like a conciliatory offering, a token of appeasement, or trying to please someone or something. In the given sentence, it is used to describe how she will be offering a conciliatory act to him.

4. The word "propitious" is synonymous with something favorable, advantageous, presenting a promising idea. And in its use, the sentence presents how the public distress is favorable for Tom Walker to set up his office.

Answer:

- 3.dangerous. Tom had long been picking his way cautiously through this treacherous forest;  stepping from tuft to tuft of rushes and roots, which afforded precarious footholds among deep sloughs.

- 4.bleak. It was a dreary memento of the fierce struggle that had taken place in this last foothold of the Indian warriors.

- 2.conciliatory.

He was sulky, however, and would not come to terms: she was to go again with a propitiatory offering,  but what it was she forbore to say.

- 1.favorable . At this propitious time of public distress did Tom Walker set up as a usurer in Boston.

Explanation:

In a meeting, the presiding officers would like to convince the group on the
importance of a certain mandate but the group seems too passive about it.​

Answers

Answer: Brainstorming meeting

Explanation:

In the brainstorming meeting the agenda of the meeting is put forward. The diverse knowledge, skills, opinions, and background are valued in such meeting. The participants may have distinct opinions and it becomes uneasy to convince the group by the presiding officers. The group members can be passive about the mandate as they may have different perceptions and ideas to tackle a matter.

What abiotic factors might affect a population of fish? Check ALL that apply.

clear water
light
temperature
food

Answers

Answer:

Clear water, light, and tempature.

Explanation:

List the 4 types of stress and their initiators.

Answers

Answer:

Time stress, Anticipatory stress, Situational stress, and Encounter stress

The signs of stress are as follows: dizziness, aches or pains, grinding teeth or clenched jaw, headaches, indigestion, increase in or loss of appetite, muscle tension in neck, face or shoulders, problems sleeping

Hope this helps :D Have a great day

Why is biodiversity important for ecosystems?

Answers

Answer:to stop from extinction

Explanation:

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