According to the periodic table, which of the following is the most accurate model of an atom of boron?
Answers
Answer: boron has 5 protons and 6 neutrons
Explanation:
According to the periodic table, the model of an atom that describes an atom of boron is model A. Boron has 6 neutrons and 5 protons.
What is a periodic table?
The chemical elements are arranged in rows and columns in the periodic table, also called the periodic table of the elements. It is frequently used in physics, chemistry, and other sciences, and is frequently regarded as a symbol of chemistry.
The atomic number is the number of protons, which is characteristic of a chemical element. The atomic number increases from left to right in the Periodic table.
Boron is an element with atomic number 5, which means it has 5 protons and 5 electrons, boron atom has a neutral charge.
The electron configuration of boron: ₅B: 1s² 2s² 2p¹, it has three valence electrons in 2s and 2p orbitals.
Therefore, the correct option is A, model A. Boron has 6 neutrons and 5 protons.
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Related Questions
It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCI solution. What is the concentration of an HCI solution?
Answers
Answer:
168ml
Explanation:
It takes 83 mL of a 0.45 M NaOH solution to neutralize 235 mL of an HCI solution, than the concentration of HCl will be 0.158 mL.
What is concentration?The amount of a chemical substance in a mixture is expressed by the substance's concentration.
What is neutralize?
The interaction of H+ ions with OH- ions produces water in a neutralization reaction, which occurs whenever an acid as well as a base reacts to form water and salt.
Calculation of concentration.
Given data:
[tex]V_{1}[/tex] = 83 mL
[tex]C_{1}[/tex]= 0.45 M
[tex]V_{2}[/tex] = 235 mL
[tex]C_{2}[/tex] = ?
Concentration of HCl solution will be calculated by using the solution.
[tex]C_{1} V_{1} = C_{2} V_{2}[/tex]
where, C is concentration and V is volume.
Put the value of given data in above equation.
[tex]C_{2} =C_{1} V_{1} / V_{2}[/tex]
[tex]C_{2}[/tex] = (0.45 M)(83 mL) / 235 mL
[tex]C_{2}[/tex] = 0.158 mL.
Therefore, the concentration of HCl will be 0.158 mL.
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How many glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react?(1 point)
0
1
2
3
Answers
Answer:
2
Explanation:
This is right, I got it right on the test
2 glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react.
CELLULAR RESPIRATION:
Cellular respiration is the process by which living organisms obtain energy (ATP) by breaking down food molecules in their cells. Cellular respiration summarily involves the reaction of glucose molecules with oxygen molecules to produce carbon dioxide (CO2), water (H2O) and energy as follows:C6H12O6 + 6O2 → 6CO2 + 6H2OOriginally, 1 molecule of glucose reacts with 6 molecules of oxygenIf 13 molecules are available to react, this means that:13/6 = 2.16 = 2 molecules of glucose will react. Therefore, 2 glucose molecules can undergo cellular respiration when 13 O2 molecules are available to react.Learn more at: https://brainly.com/question/23126016?referrer=searchResults
Is coronavirus a lytic cycle or a lysogenic cycle ?
Answers
Answer:
i think lysogenic cycle
Explanation:
What is the result of the capital formation process?
A. A consumer spends capital to acquire goods or real estate.
B. A financial planner creates a high-risk plan for investing capital.
C. An investor increases the amount of capital he or she controls.
O D. A bank makes capital available to a variety of customers.
Answers
Answer:
C
Explanation:
Just took the quiz and got it right
The result of the capital formation process is an investor increases the amount of capital he or she controls. The correct option is C.
What is capital formation?Capital formation is increasing the capital by increasing the savings, investment in assets and savings, and investing money in a way that increases the stock of money.
So, the capital formation process is increasing the capital which he or she controls.
Thus, the correct option is C. An investor increases the amount of capital he or she controls.
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Why do cells break apart small sugars during cellular respiration?
O to obtain carbon dioxide
O to build larger sugars
O to obtain energy
O to build various body parts
Answers
10
F
The diagram below represents changes that take place within the human body. The diagram
represents * IS
Stability
Stimulus
Instability in
internal conditions
Response
Stability
cellular differentiation
dynamic equilibrium
gene interaction
biological evolution
Answers
Answer:dynamic equilibrium
Explanation:
how does the pleura help with breathing?
Answers
Answer:
The outer pleura is attached to the chest wall (1-9). The pleural cavity aids optimal functioning of the lugs during breathing. It transmits movements of the chest wall to the lungs, particularly during heavy breathing.
*
Teaching your dog to associate a sound with a reward is?
Answers
Answer: Training
Explanation:
List two ways in which salt is different from chlorine.
Answers
Answer:Chlorine — the standard chemical in pools — is used to keep harmful bacteria away from humans. In chlorine pools, the chemical is purchased in highly concentrated levels and added to the water. In salt water pools, the natural process of electrolysis turns the salt into chlorine.
Explanation:
PLEASE HELP ME ASAP
Does anyone know the answers for the 3.25 Mitosis lab?
Answers
Answer: your lucky
but please study, don't waste your life.
What is the function of xylem
Answers
Answer: Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage. The water‐conducting function of xylem is one of the major distinguishing features of vascular plants
Explanation: hoped this helped
Offspring that are the result of sexual reproduction are best described by which of the following?
a The offspring contain fewer chromosomes than either parent because of meiosis
b The offspring contain all of the dominant genes found in the grandparents
c The offspring are genetically identical to the biological mother and father
d The offspring are genetically unique and contain a new combination of genes
Answers
Answer: d.
Explanation:
1. Fill in the blank spaces with suitable words.
a) The bunching of light back from the surface of a body is____________.
Answers
Answer:
reflection please mark me brainliest
Write a summary of what you have learned in "Introducing the Microscope". Be sure to include steps on how to focus, how to solve for magnification, and what a field of view is and how to measure it.
Answers
"Introducing the Microscope" is a text that shows what a miscroscope is, how it works, its composition and its functions. This is a very important text for those who have no experience with this equipment, but can use it at any time.
One of the most important points in the text is about the operation and correct use of the microscope. Where concepts are explained, promoting the proper functioning of the equipment.
According to the text, we must have a full conviction of the microscope's field of view, which is the vision we have when we position our eyes under the microscope to visualize tiny and invisible elements with the naked eye.
However, the field of view needs to be focused and this is done with the manipulation of the microscope that will allow the vision to have a very well developed and detailed quality.
In addition, a microscope has many lenses, which can increase and decrease the size of the image. This promotes the enlargement of the image and makes the image can be seen more closely and in more detail.
If you measured an entire bar of soap and compared it to the piece of soap from this activity, would the bar and the piece have the same mass, volume, and density?
Answers
Answer:
Different mass
Different volume
Same density
Explanation:
Intensive physical properties are those properties of a substance that is not dependent on amount i.e. do not change in response to changes in the amount of the substance. Intensive properties include density, temperature, boiling point etc.
On the other hand, extensive properties are those properties that are dependent on the amount of the substance. For example, mass and volume are extensive properties.
Hence, according to this question, measuring an entire bar of soap and comparing it to a piece of soap, the bar and the piece would have a:
- Different mass ( size dependent)
- Different volume (size dependent)
- Same density (size independent)
why is earth layered how it is
Answers
Answer:
the increase in temperature and pressure as depth increases
Explanation:
branliest pls
The seasons are caused by...
A. How the earth rotates
B. the earths weather and average climate
C. the distance between the earth and sun
D. the changes in the distribution of light and the tilt of the earth
Answers
Answer: I would say A. How the earth rotates
Explanation: Because the axis is tilted.
Identify the structure,is it RNA or DNA? WHY?
Answers
Answer:
what it look like tho
Explanation:
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Brainleist for answering #14 and #15
Answers
Answer:
14.The relationship between photosynthesis and cellular respiration is such that the products of one system are the reactants of the other. Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water. To emphasize this point even more, the equation for photosynthesis is the opposite of cellular respiration.
15.photosynthesis:grass celluar:cricket moths,plants,owl
Explanation:
Answer:
Photosynthesis creates glucose, and cellular respiration creates carbon dioxide.
Explanation:
grass,and oak tree perform photosynthesis, and cricket,moth,and owl perform cellular respiration.
hope this helps! :)
ill give you a Brainliest if it is right
The steps in the formation of metamorphic rocks are listed below in an incorrect order.
1. Rock is subjected to extreme changes in heat.
2. Rock's internal arrangement of atoms changes.
3. Rock is subjected to extreme changes in pressure.
4. Rocks with new properties are created.
Which of these best shows the correct order of steps in the formation of metamorphic rocks?
A) 1, 3, 2, 4
B) 2, 1, 3, 4
C) 3, 1, 4, 2
D) 4, 2, 3, 1
Answers
Which explanation is based on empirical evidence? A. The arrangements of stars into constellations happened as a result of the actions of supernatural beings. B. Observations made using telescopes confirm that Earth orbits the Sun. C. The relative positions of the Sun, Earth, and stars can affect human events. D. Ancient texts reveal that the universe is about 6,000 years old. please hurry I really need help
Answers
Answer:
B. Observations made using telescopes confirm that Earth orbits the Sun.
Explanation:
An empirical evidence is an evidence derived from careful observation with our senses and through experiments designed in the laboratory. They can be reported either quantitatively or qualitatively.
Observations made using the telescope is made by our sense of sight. Although, a qualitative measurement is made, it is nonetheless an empirical evidence. Most space observations are usually qualitative in nature. The telescope is used for bringing far way places.what are the answers to these 3 questions?
Answers
Answer:
1. A, 2. C, 3. B
Explanation:
number 1 is A, number 2 is C, number 3 is B
BRAINLIEST AND 20PNTS!!
What beneficial role do the bacteria that live in the root nodules of plants play?
A. The bacteria converts sunlight into usable nutrients for the plant.
B. The bacteria converts inorganic nitrogen into usable nitrogen for the plant.
C. The bacteria helps the roots absorb more water from the surrounding soil.
D. The bacteria helps the plant defend itself against predators.
Answers
Answer:
B
Explanation:
the bacteria converts inorganic nitrogen into usable nitrogen ammonia for the plant.
Rhizobium bacteria converts inorganic nitrogen into usable nitrogen for the plant.
What are Rhizobium?These are the bacteria living in plant nodules of many leguminous plant.Plant cannot use atmospheric nitrogen to its use.So Rhizobium bacteria converts inorganic nitrogen to ammonium which can be used by plants.Hence, the correct option is B. The bacteria converts inorganic nitrogen into usable nitrogen for the plant.
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What is ATP? In photosynthesis, what form of energy is sunlight converted to, and how is this energy stored?
Answers
ill give you a brainliest if it is right
Answers
Answer:
1,4,3,2
Explanation:
Answer:
Sedimentary rocks include common types such as chalk, limestone, sandstone, clay and shale. Sedimentary rocks are formed from overburden pressure as particles of sediment are deposited out of air, ice, or water flows carrying the particles in suspension.
Explanation:
What are the pathways of the carbon cycle?
Answers
The pathways of the carbon cycle cellular respiration and all exergonic processes produced in the cell, through which substances oxidize and chemical energy is released.
When chemical energy is released?All exergonic processes produced in the cell, through which substances oxidize and chemical energy is released, are grouped under the name of cellular respiration, but to break down an organic molecule the cells employ, mainly dehydrogenations that can be carried carried out in the presence or absence of atmospheric O2 oxygen.
There are therefore two types of breathing and they are aerobic respiration and anaerobic respiration. The latter also called fermentation. Aerobic respiration (oxidative phosphorylation)
Use molecular O2.It degrades glucose to CO2 and H2OExergonicRecovers about 50% of chemical energyPresent in most organisms.It uses enzymes located in the mitochondria.Therefore, The pathways of the carbon cycle cellular respiration and all exergonic processes produced in the cell, through which substances oxidize and chemical energy is released.
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A student is making a model to illustrate the functions of ADP and ATP in photosynthesis. Which model best illustrates the role of ATP in photosynthesis?
a power plant that generates energy
a hammer that helps break apart water molecules
a pan that carries coal
a rechargeable battery that stores and releases energy
Answers
Answer:
a rechargeable battery that stores and releases energy
Explanation:
Adenosine triphosphate (ATP) is a chemical molecule that has the ability to store and release energy for metabolic activities to occur in living cells. ATP stores energy in its phosphate bonds when an ADP molecule is phosphorylated while it releases the energy when the phosphate bond is broken.
According to this question, a student is making a model to illustrate the functions of ADP and ATP in photosynthesis. The model that " ATP is a rechargeable battery that stores and releases energy" best illustrates the role of ATP in photosynthesis. This is because an ATP molecule just like a rechargeable battery can be charged with energy to store and discharged to release the energy.
Which of the following molecule is NOT needed for the Calvin Cycle to take place?
a. H2O
b. CO2
c. RuBP
d. NADPH
(5C enzyme)
Answers
Answer:
C.
Explanation:
The chemical RuBP, is not even mentioned in that cycle, making it the least viable answer.
H2O is not needed for Calvin cycle to take place.
Option A is the correct answer.
Calvin cycle is the cycle that take place during photosynthesis and it is light depend where Co2 enters the pores of the stomata of the leaf.
It is in three stages.
1. Carbon fixation: Co2 react with with three molecules of the five carbon acceptor molecule (RuBP) to produce ,three molecules of carbon compounds that divide to form three carbon compound (3-PGA) in the presence of rubisco enzyme.
2. Reduction stage: In this stage,6 ATP and 6 NADPH convert six 3-PGA molecules to 6 molecules of three-carbon sugar (G3P). It is a reduction reaction because NADPH lose electrons to a three-carbon intermediate to produce G3P.
3. Regeneration : G3P molecule move to produce glucose, five G3Ps are recycled to produce the RuBP acceptor. This reaction requires ATP.
Therefore, H2O is not included in Calvin cycle.
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PLEASE HELP!! DNA mutations and cancer activity
Answers
Answer:
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Explanation:
compare and contrast the most common cancers for men and women using your own words.
-Minimum 4 sentences