The atomic number of argon is 18 and its mass number is 40. Describe the number and type of particles
found in the nucleus of this atom
Answers
Answer:
Argon's atoms have 18 protons, 22 neutrons in its nucleus, orbited by 18 electrons- its atomic mass= P 18 +N 22.
Explanation:
Atoms are the most basic unit of matter that makes up elements. Atoms are composed of electrons orbiting neutrons and protons surrounding a nucleus.
The atomic number is defined as the number of protons in an atom, while the atomic mass is the number of protons and neutrons.
The element Argon, Ar is a noble gas, that exists in a gaseous, inert, state at temperature. Its atoms have 18 protons, 22 neutrons in its nucleus, orbited by 18 electrons- its atomic mass= P 18 +N 22.
There are 8 valence electrons in its outer shell, thus:
Ar is not very reactive, as it does not require electron sharing in atomic bonding. It shows low conductivity, as there are no free electrons
Related Questions
The first step in mitosis is:
1.chromosomes pull away from each other
2.the nucleus of the cell forms
3.a cell splits apart
4. second set of chromosomes is produced
Answers
Answer:
(4) a second set of chromosomes is produced
Explanation:
Answer:
It is D. a second set of chromosomes is produced
Explanation:
Hope this helped have an amazing day!
deforestation causes an increase in CO2 because when trees are cut down, nothing absorbs the carbon
true or false
Answers
Answer:
♡hi luv ♡
-- it's true
~Clara ✧･ﾟ: *
Explanation:
What genetic condition results in the trait indicated by the blue color being
expressed in the individuals shown here?
Answers
Answer:
ressessive
Explanation:
because it is what present by its phenotype
Blue color being expressed in the individuals shown here is recessive trait.
What is recessive trait?In terms of genetics, the term "recessive" describes the connection between an observed trait and the two inherited forms of a gene associated with that feature.
Each gene has two alleles that an individual inherits from each parent. When a characteristic is recessive, both of the (recessive) alleles of the gene that causes the trait must be present for the trait to manifest. When there is only one copy of an allele, it has no effect at all.
This is in contrast to a dominant trait, which can only be expressed when one of the two alleles is present.
Therefore, Blue color being expressed in the individuals shown here is recessive trait.
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Which correctly lists three places that fresh water is found?
Answers
Answer:
Ice caps and glaciers - 69%
Groundwater - 30%
Surface water - less than 1 %
Explanation:
Fresh water is a type of water, found in nature, in which there is no salt. It is water suitable for consumption (provided it is treated) for humans and animals. Fresh water is also used in agriculture. Only about 2.5% of the water found on our planet is sweet. It is mainly found in polar caps and glaciers, groundwater, surface water.
With the growth of the world population, fresh water has become increasingly scarce. Overuse, waste and water pollution are the main problems related to fresh water today.
As it is a precious and scarce mineral resource, society must be aware that, in order not to run out of water in the near future, it is necessary to avoid waste, use it rationally and do not pollute rivers, lakes and water sources.
Answer:
C).ice sheets, water vapor, rivers
:)
Explanation:
which of the following adaptations is most closely related to what the animal eats
a. a poison frogs bright colored
b. the venomous bite of a slow loris
c. a house cats fur
d. a strong jaw bone of a giant panda
Answers
Answer:
D
Explanation:
Why do you think P-waves and S-waves are also called body waves? Explain..
Answers
45 POINTS AND BRAINLIEST!
What is the most significant difference in current weather forecasting methods compared to what was done in the past?
A. more accurate computer-based weather models
B. improved weather instruments
C. better TV and radio weather communications
D. more weather stations reporting data
Answers
Your answer would be C
Answer:
A.
Explanation:
That allowed meteorologists to plot weather maps and see weather systems moving from place to place. That improved the accuracy of forecasts. During the 1900s, meteorologists developed even better tools for observing and predicting the weather. :)))) hope that helped!!!
Use the image of the periodic table to answer the following: Which of the
following shows the correct Lewis structure for the element
Answers
Answer:
Wish I could be of help but I like your peppa pig sticker :)
Answer:
its b and the next one is c
Explanation:
3. M. Garcia noticed pain on the left side of his chest under his arm The pain was stronger the
next day and his wife noticed patches of a red bumpy rash in the area of the pain. By the time
he saw his doctor that afternoon blisters and additional red patches had emerged. The doctor
asked about childhood illnesses and confirmed that Mr. Garcia had had chickenpox.
What is the possible diagnosis?!
H
Answers
Answer:
The possible diagnosis of M. Garcia with chest pain radiating to the left arm and the presence of red patches and vesicles is Herpes zoster.
Explanation:
Herpes Zoster is a disease produced by the varicella-zoster virus, and has a history of having had chickenpox in childhood or youth.
The varicella virus remains dormant in the body for several years, and can reappear, presenting as a localized and painful rash that can produce a neuritis in the affected territory.
The clinical symptoms of the M. Garcia —pain in the thorax irradiated to the left arm, red patches and vesicle-blisters— associated to the antecedent of chickenpox make think of a diagnosis of Herpes Zoster.
Photosynthesis stores energy.
Please select the best answer from the choices provided
True
False
Answers
Answer:
True
Explanation:
it not only stores energy but it feeds the plant
I think that would be true.
A scientist places four identical cells into four different liquids, each with different concentrations of magnesium. Cell Description of Liquid Result W Slightly more magnesium than the cell Took in magnesium X The least amount of magnesium Took in magnesium Y Slightly less magnesium than the cell Took in magnesium Z The most amount of magnesium Took in magnesium Which shows evidence of active transport?
Answers
Answer:
The correct option is Z
Explanation:
Active transport can be described as the movement of molecules against a cell's concentration gradient; meaning the movement of molecules across the cell's membrane from a region of lower concentration to a region of higher concentration. From this, it can be deduced that to have active transport in the description in the question, the "body" (the cell or the liquid) with the most amount of magnesium took in more magnesium (showing movement against concentration gradient as the magnesium moved from the least side to the most side). Thus, the correct option is Z
Answer:
The answer is D) cells X and Y
Explanation:
I need helpppp please
Answers
Answer: Animals move when their brains send signals through nerve cells telling the muscle cells to contract. The action of pulling and relaxing of muscles allows animals to move. ... The cells all rely on the same process to get their energy: cellular respiration, a process that releases energy by combining glucose and oxygen.
hope this helps... stay safe and have a great day...
Describe Pollan’s son’s first experience of sugar.
Answers
Answer:
because it's like sweet sugar that we uses and eats so that we put lot's of sugar in our bodies to give us more energy.
Explanation:
which of the following is a description of a resource that belongs to a country with a high carrying capacity a. water comes directly from bodies of water
b. food is not alwasy available c. homes are small and house many people d. food is brought in from other places
Answers
Answer:
food is brought in from other places
Explanation:
The description of resources that fits a country with a high carrying capacity would be water coming directly from bodies of water.
What is carrying capacity?It refers to the maximum number of individuals of a particular species that an environment can support based on the resources it has.
An environment with a high carrying capacity will be able to support a large population and cater to the resources the population needs.
Thus, water coming directly from bodies of water in an environment fits an environment that is able to cater to the needs of its population.
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What are 6 signs you're bottling up your emotions?
(Social Psychology and personality Science)
Answers
1. You rarely yell or cry, but you can have an anger outburst over small issues.
2. You avoid and distract yourself whenever you start to feel uneasy.
3. You feel like you’re a different person around others than you are by yourself.
4. You often feel uncomfortable around highly emotional people who express anger, sadness, or other emotions visibly.
5. You feel distanced from others, experiencing life from a third-person perspective.
6. You avoid confrontation and you never address the causes of your emotions.
When studying animal behavior, the distribution of organisms within a choice chamber can be studied to identify animal preferences. 20 Isopods are placed in a 2-choice choice chamber. A cotton ball dampened with distilled water is placed in Chamber A; A dry cotton ball is placed in Chamber B. After 15 minutes 2 Isopods are located in Chamber B, and 18 isopods are found in Chamber A. Perform the chi-squared test to determine if the distribution of isopods is significant or due to random chance.a. chi-squared is 1.20, no it is not significant.
b. chi-squared is 8.42, no its not significant.c. chi-squared = 12.8, yes it is significant.d. chi-squared is 18.59, yes it is significant.
Answers
Answer:
The correct option is c. chi-squared = 12.8, yes it is significant.
Explanation:
Available data:
20 Isopods are placed in a 2-choice choice chamber. Different conditions were applied15 minutes later: 18 isopods are found in Chamber A and 2 Isopods are located in Chamber B.H₀= Individuals will be equally distributed
H₁ = Individuals will not be equally distributed.
Chi square= ∑ ((O-E)²/E)∑ is the sum of the terms
O are the Observed individuals: 2 in chamber B, and 18 in chamber A.
E are the Expected individuals: 10 in each chamber
X² = ∑ ((O-E)²/E) = ((2 - 10)²/10) + ((18 - 10)²/10) = 6.4 + 6.4 = 12.8
X² = 12.8
Freedom degrees = K – 1 = 2 - 1 = 1(K = Independent variables = dry cotton and wet cotton)
Significance level, 5% = 0.05 Table value/Critical value = 3.8412.8 > 3.84 meaning that the difference between the observed individuals and the expected individuals in each chamber is statistically significant. Not probably to occur by random chances.
There is enough evidence to reject the null hypothesis. The distribution of isopods is statistically significant.Which air pollutant is most likely to cause bronchitis? carbon monoxide ozone emis
Answers
Answer:
ozone
Explanation: i took the test
Can someone help with this ?
Answers
Answer:
Explanation:
Similarities: Both are moving particles between different levels of concentration.
Differences: Diffusion, however, is the transport from a high to low concentration and requires no energy, while Active Transport is the movement from low to high concentration and requires energy to do so.
3. Choose the answer that describes biological weathering.
A. acid in water acting on limestone
B. stone and boulders moved by water
C. salt crystallization forming tafoni
D. lichen growing on rocks
Answers
Answer:
should be B
Explanation:
Answer:
c
Explanation:
Lichen growing on rocks and types of bacteria produce chemicals that weather minerals 3 to 4 times faster than normal.
The MOST complex level of organization within large organisms, such as elephants, is the organ system. True or false
Answers
Answer:
False
Explanation:
Answer:
true
Explanation:
It has the most of complex level of organization within large organisms, such as elephants, is the organ system.
What is it called when scientific experts agree a particular theory or idea is correct based on the evidence available?
A. Scientific research
B. Collective agreement
C. A fact
D. Scientific consensus
Answers
Explanation:
Scientific experts are the pannel of the researchers involved in studies and analysis. The expert agreeing on a theory based on the evidence is called scientific consensus. Thus, option D is correct.
What is scientific consensus?
The scientific consensus is the agreement where the scientists and researchers from various fields agree on a proposed idea. They are evaluated by the majority agreeing with a particular theory.
The publications, academic discussion, and peer review accomplishes the consensus and act as a quality checker that evaluates the data and the facts based on the evidence presented.
Therefore, in scientific consensus, scientific experts agree on a particular theory.
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80 POINTS! Refer to the Newsela article "PRO/CON: Should We Abolish the Electoral College?"
Part A
Read the text under the heading "PRO: Let's Give All Voters an Equal Voice."
Which claim does the author make as a pro for doing away with the Electoral College.
The popular vote determines the winner in a presidential election.
The Senate and the House of Representatives have an equal voice in shaping government.
The way the federal government is set up ensures that the minority has a voice.
It is important to ensure that small states have an equal voice.
Question 2
Part B
Read this excerpt from the article.
The U.S. Senate gives states equal representation with two senators each. The House of Representatives, however, allocates representation based on population.
Does this excerpt provide evidence that effectively supports the claim identified in Part A?
Yes, because it provides an example of the way in which the federal government gives smaller states a voice.
No, because it does not provide an explanation for how the federal government is set up.
Yes, because it gives evidence that the Constitution provides a voice for minorities.
No, because it describes the legislature alone and not other parts of government.
Answers
Answer:
A
Explanation:
i think its A........
‼️BRAINLIEST‼️ what is the difference between mitosis and meiosis?
Answers
Answer: Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
sorry if this isn't what you are looking for... Stay safe and have a great day!!! :D
why do you think the source of information related to job are important for the concerned people
Answers
Answer:
It’s important to avoid extra costs, time and wrong knowledge/ idea.
Explanation:
I think the source of information related to job are important for the concerned people in order to enable them have the best view and position on jobs available. This helps them to weigh their options very well before taking decisive actions.
It also helps to avoid extra costs, time and wrong knowledge/ idea which in turn promotes general efficiency of such group of people.
Amylase is an enzyme found in saliva that breaks down starch . The enzyme is currently functioning at its optimal pH of 7 and optimal temperature of 32 degrees * C Which of the following could result in an increase in the reaction rate?
Choose 1 answer : А)Decreasing enzyme concentration B)Placing the reactants in an environment at 10 degrees * C C)Providing an environment with a pH of 9 D)Increasing substrate concentration
Answers
Answer: D- Increasing substrate concentration.
Explanation: Increasing substrate concentration could increase the rate of the reaction, as there would be more substrate to bind with the enzyme. Hope this helps have a great day :) btw i got it right on khan academy.
The option that could result in an increase in the reaction rate would be increasing substrate concentration.
For enzyme-catalyzed reactions, the substrates are the reactants of the reaction.
Generally for reactions, an increase in the concentration of reactants will increase the rate at which products are formed.
Thus, irrespective of the presence or otherwise of the amylase enzyme, increasing the substrate concentration would increase the rate of reaction.
Since the optimal pH and temperature remain 7 and 32 degrees Celsius respectively, changing these factors will only reduce the rate of reaction. Decreasing the concentration of the enzyme would also reduce the rate at which products are formed.
More on enzyme-catalyzed reactions can be found here: https://brainly.com/question/6658074?referrer=searchResults
how to solve problems of Transportation by using science
Answers
m= The number of sources.
n= The number of destinations.
The total quantity available at each source.
The total quantity required at each destination.
The cost of transportation of one unit of the commodity from each source to each destination.
Sexual reproduction involves (one / two) parent/s to produce a new
individual of the same species.
Asexual reproduction (does / does not) cause variation. All the daughter
cells have the same / different) resistance to diseases.
Answers
Answer:
True-Did you need help?
Explanation:
Answer:
Sexual reproduction involves two parent/s to produce a new individual of the same species.
Asexual reproduction does not cause variation
All the daughter cells have the same resistance to diseases.
Explanation:
Which of the following is NOT a product of glycolysis?
ATP
glucose
pyruvic acid
Answers
Answer: glucose
Have a blessed day!!! :)
What are the 7 levels of scientific classification/taxonomy in order from highest
to lowest?
Answers
Kingdom, Phylum, Class, Order, Family, Genus and Species
Step By Step Explanation:
how do cells in animals (o.r. birds horses humans etc.) get energy.
Answers
Answer:
From the mitochondria
Explanation: