Fluorine has an atomic number of 9. The n = 1 energy level has two electrons, and the n = 2 energy level has seven electrons. Flourine's valence is _____.

Answers

Answer 1

The answer will be -2

Related Questions

Record your observations of how the agar cubes look before you add vinegar and then after you add vinegar and stir. How did the appearance of the cubes change over time?

Answers

The vinegar would tend to diffuse into the agar blocks decreasing the amount of vinegar outside the agar cubes and increasing the volume of agar cubes. Diffusion is the movement of particles (ions or molecules) from an area of higher concentration to an area of lower concentration.

Answer:

Both the size and color of vinegar cubes changed.

Explanation:

The agar cubes before the addition of vinegar looked pink in color due to the addition of coloring agent for testing color change on addition of vinegar.

When vinegar is added the color of agar changes from pink to orange as vinegar is acidic in nature.

Also as the vinegar diffused into the cubes it became large after stirring. Thus, both the size and color of vinegar cubes changed.

where in the human body would you find cells with a large number of mitochondria?

Answers

any tissue in your body has the largest number of mitochondria.

Final answer:

Muscle cells have a high concentration of mitochondria due to their need for a lot of energy to contract.

Explanation:

In keeping with our theme of form following function, it is important to point out that muscle cells have a very high concentration of mitochondria because muscle cells need a lot of energy to contract.

Learn more about Mitochondria in muscle cells here:

https://brainly.com/question/29760163

#SPJ12

any pair of chromosomes other than the sex chromosomes

Answers

Any pair of chromosomes other than that of sex pair of chromosomes are referred to as autosomes or autosomal chromosomes.

normally, each human cell contains 23 pairs of chromosomes, forming 46 chromosomes total. the very last pair of chromosomes differ between men and women. the accurate chromosome combination needed to create a biologically born male is XY and the combination needed to create a biologically born female is XXY. hope this helped!

How do organisms use different types of carbon compounds

Answers

Among organisms, carbon compounds exist in four major categories: lipids, carbohydrates, proteins and nucleic acids. Carbohydrates are required as sources of energy. Proteins are the major molecules from which organisms are built. Lipids provide energy to produce hormones. Nucleic acids consist of deoxyribonucleic and ribonucleic acids, which play a key role in protein synthesis.

Which factor can affect the rate of photosynthesis by denaturing enzymes in the plant?

Answers

The answer is low light intensity! I hope this helps!

Answer:

At certain pH levels, the enzymes in the plant can denature. If this occurs, the plant will no longer be able to carry out chemical reactions in the cell, including photosynthesis.

In a population of doves in a forest a small group of long tailed doves migrated to another forest. Over successive generations the population in the new habitat shows more of the long tailed doves than the short tailed ones. Which factor could be responsible for this micro evolution

Answers

I believe the correct answer is the Founder effect.
This effect refers to the fact that genetic diversity is lost after a long period of migration. So, when the long-tailed doves migrated to another forest, there were more and more long-tailed doves, and fewer and fewer short-tailed ones, which means that there is not a lot of diversity anymore.

What role do glucose and oxygen play in cellular respiration?

Answers

Final answer:

In cellular respiration, glucose is used as the primary fuel to produce ATP, while oxygen acts as an essential electron acceptor for efficient ATP production. Without oxygen, much less ATP is produced, demonstrating the necessity of both glucose and oxygen in energy metabolism within cells.

Explanation:Role of Glucose and Oxygen in Cellular Respiration

During the process of cellular respiration, glucose and oxygen play critical roles. Glucose serves as the primary fuel, with its breakdown releasing the energy necessary for the synthesis of adenosine triphosphate (ATP). Oxygen, meanwhile, is crucial for accepting electrons at the end of the electron transport chain, allowing for the efficient production of ATP. Without oxygen, only a limited amount of ATP can be produced through anaerobic pathways.

The Reactants and Products of Cellular Respiration

Glucose enters the body from food intake and is transported by the cardiovascular system from the digestive system to the cells. Oxygen is inhaled into the lungs, diffuses into the bloodstream, and is also carried to the cells. In the presence of oxygen, cellular respiration begins with glycolysis, releasing just two molecules of ATP, and culminates in the mitochondria through the citric acid cycle and the electron transport chain. This leads to the production of the majority of ATP, with carbon dioxide and water as waste products.

Comprehensive Cellular Respiration

Most steps of cellular respiration, including the final and most ATP-productive ones, occur within the mitochondria of cells. All organisms that require oxygen perform cellular respiration to convert glucose into the usable energy of ATP. The overall transformation during cellular respiration involves the consumption of glucose and oxygen and the release of carbon dioxide, water, and ATP. As a result, cellular respiration is essential for powering various cellular processes across organ systems, notably involving the digestive, cardiovascular, and respiratory systems.

Final answer:

In cellular respiration, glucose is broken down with the help of oxygen to produce ATP, carbon dioxide, and water. Oxygen's crucial role is to serve as the final electron acceptor in the electron transport chain, allowing for efficient ATP production. Without oxygen, the ATP yield would be greatly reduced.

Explanation:

Glucose and oxygen play crucial roles in the process known as cellular respiration, which is the method by which cells convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. Oxygen acts as the final electron acceptor in the electron transport chain, which is necessary for the production of ATP. Without oxygen, the electron transport chain would not function, significantly reducing the amount of ATP produced by cellular respiration.

In the presence of oxygen, glucose undergoes a series of reactions that result in the production of carbon dioxide and water as waste products, and the most importantly, ATP, which is the main energy currency of the cell. Each molecule of glucose, through the process of cellular respiration, can produce a significant number of ATP molecules, which the cell uses for various energy-requiring functions.

Cellular respiration is a multi-step process starting with glycolysis, continuing through the citric acid cycle, and concluding with oxidative phosphorylation at the electron transport chain. This intricate process involves the digestive, cardiovascular, and respiratory systems, as glucose comes from the food we eat, and the oxygen needed for respiration is obtained from the air we breathe.

what do plants absorb through their roots? That are not NUTRIENTS

Answers

plants absorb water through their roots.

Greetings!

Plants absorb the moisture/water from the soil in addition to nutrients, through their roots.

Nutrient plants absorb include nitrogen, magnesium etc.

Hope this helps.
-Benjamin

What do ribosomes rough er and the golgi apparatus have in common

Answers

they are both organelles , and the both help with packaging and shipping of proteins

Ribosomes, Rough endoplasmic reticulum (RER), and golgi apparatus- all the three organelles participate in the packaging of proteins. Proteins synthsized in ER, are packed in the golgi apparatus.

What is Protein packaging?

Golgi apparatus is the main organelle which is responsible for the packaging and transportation of the proteins, and lipids. The nucleolus present in the nucleus is responsible for the synthesis of ribosomal RNA (rRNA) and proteins. Ribosomes are responsible for the synthesis of protein.

Proteins generated by the ribosomes in the endoplasmic reticulum are packed in the Golgi apparatus, where lipids are wrapped around them in a membrane which is then exported out of the cells. Molecules which enter the Golgi apparatus are charged, stored, and then released into the cytoplasm in the form of secretory vesicles to the final destination.

Learn more about Packaging of proteins here:

https://brainly.com/question/3453794

#SPJ2

Which statement does not describe a scientific theory A) Can never be proven B) supported by facts C) eventually becomes a fact D) generally accepted explanation

Answers

A because to get a scientific theory you have to prove it by multiple trials of the exact same thing. it can be proven thrugh work

The statement C. "eventually becomes a fact" does not describe a scientific theory. Scientific theories remain theories despite extensive evidence and are open to revision; they don't become 'facts'.

The statement that does not accurately describe a scientific theory is "eventually becomes a fact." It's important to note that a scientific theory is a well-substantiated explanation of aspects of the natural world that has been consistently supported by a large body of evidence and facts obtained from multiple observations and experiments. A scientific theory is generally accepted among scientists due to its robust support, not because it has morphed into a fact over time.

Additionally, scientific theories are designed to be testable and are subjected to rigorous testing and refinement. While a theory may be widely accepted and highly reliable due to extensive evidence, it remains open to scrutiny and revision should new evidence emerge.

Describe how producers, consumers, and decomposers are linked in a food chain.

Answers

producers,consumers,and decomposers are linked because they all have to work together to stay alive the produces will make the energy inside itself then the consumers will eat it then have all the energy the plant had then the consumer will die and the decomposer will beak it down and eat what remains of the animal

i hoped this helped :)

what makes a molecule a saturated fat?

Answers

A molecule is considered to be a saturated fat when there is a single bond present.

Final answer:

A molecule is a saturated fat when it consists of carbon chains having only single bonds between carbons, making it fully 'saturated' with hydrogen atoms. These fats have straight chains, can pack tightly together, and are solids at room temperature.

Explanation:

A molecule is classified as a saturated fat when it is a type of simple lipid molecule with a carbon chain bonded to the maximum number of hydrogen atoms possible. This means that each carbon atom in the chain is linked to adjacent carbons by single bonds only, without any carbon-to-carbon double bonds (C=C). Saturated fatty acids comprise these simple lipid molecules and contribute to the molecule's straight chain structure, which allows them to pack closely together. Consequently, saturated fats tend to have high melting points and are typically solids at room temperature.

which two macromolecules offer energy storage to the cell

Answers

I know one of them would be Nucleic Acid but maybe the second one could be Protein??

What do an ogre, an onion and the Earth have in common? They have layers! How many layers does the Earth have?

Answers

Earth has 4 layers; Crust, Mantle, Inner Core, and Outer Core

Answer:

Crust, Mantle, Inner Core, and Outer Core

Which of these is an example of chemical change breaking glass melting ice on windshield burning gasoline denying a bumper

Answers

Answer: Option (c) is the correct answer.

Explanation:

It is known that chemical changes are the changes which tend to show difference in chemical composition of a substance.

For example, toxicity, reactivity, combustion etc are all chemical properties.

When gasoline is burning then a chemical change takes place as combustion is taking place.

A chemical change will always lead to the formation of a new compound and this change is irreversible in nature by any physical means.

On the other hand, a change which is unable to bring any difference in chemical composition of a substance is known as a physical change.

For example, change in shape, size, mass, volume etc are all physical properties.

Breaking glass, melting ice on windshield and denying a bumper are all physical changes.

Thus, we can conclude that out of the given options burning gasoline is an example of chemical change.

Answer:

Explanation:

i took the test

How is environmental Science different from ecology

Answers

Ecology is the study of how organisms interact with each other add their surroundings.

Whereas, environmental science is the study of the elements of earth and life sciences.

Ecologists typically work within the field of environmental science, and focus on the interactions between different organisms within an ecosystem.

This means, that there is a part of Environmental Science that is not ecology- for example the study of ocean currents.
And on the other hand, ecology typically involves the environment, so it can be understood as its sub-field

what happens when thermal energy is absorbed

Answers

Heat, once absorbed as energy, contributes to the overall internal energy of the object. One form of this internal energy is kinetic energy; the particles begin to move faster, resulting in a greater kinetic energy. This more vigorous motion of particles is reflected by a temperature increase.

1) Living organisms all have DNA and RNA which are both_____

Carbohydrates

Lipids

Proteins

Nucleic acids

__________________________

2)

Carbohydrates are made up of carbon, oxygen, and

gold

hydrogen

copper

potassium

____________________________

3)

Which of these elements is essential to making up all organic molescules?

hydrogen

oxygen

carbon

nitrogen

_______________________________

4)

What is the basis of an orgnanic molecule?

The basic structure molescule?

The basic structure is the iron atom.

The basic structure is the potassium atom.

The basic struture is the carbon atom.

__________________________________

5)

The four fundamental types of organic molecules are nucleic acids, carbohydrates, lipids, and_______.

Proteins.

nitrates.

sulfates.

Phosphates.

Answers

Answer:

d, b, c, d, a

Explanation:

i got a 100 on the test and i'm positive these are the correct answers u can trust me. some of my questions are a little different but you can fill in the blanks.

Final answer:

Living organisms have DNA and RNA, both of which are nucleic acids. Carbohydrates are made up of carbon, oxygen, and hydrogen. Carbon is the basis of all organic molecules. The four fundamental types of organic molecules are nucleic acids, carbohydrates, lipids, and proteins.

Explanation:

1) Living organisms all have DNA and RNA which are both nucleic acids. Nucleic acids are biological macromolecules that store genetic information and enable protein production.

2) Carbohydrates are made up of carbon, oxygen, and hydrogen. They are key sources of energy for living organisms.

3) Carbon is the element that is essential to making up all organic molecules. Organic molecules, by definition, contain carbon atoms.

4) The basis of an organic molecule is the carbon atom. Carbon atoms can form long chains, complex structures and numerous compounds, making them the basic building blocks of life on Earth.

5) The four fundamental types of organic molecules are nucleic acids, carbohydrates, lipids, and proteins. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells, and organisms, and transporting molecules from one location to another.

Learn more about Biology here:

https://brainly.com/question/12400350

#SPJ2

Plant leaves _____.
A. are made mostly of dermal tissue
B. contain many parenchyma cells
C. are covered with a waxy cortex
D. absorb water and nutrients

Answers

C is your answer hope this helps

Answer: Option C

Explanation:

The plants are known as the producers that make food by the help of the process known as photosynthesis.

The process of photosynthesis takes place in the leaves and then the food is transported to various parts of the plant body.

Epidermal tissues in the leaves are covered with a waxy cuticle or cortex.It helps in preventing water loss from the leaves.

The guards cells in the leaves are responsible for the opening and closing of stomata which in turn controls the water loss from the leaves.

write a list of at least five scientific methods

Answers

1.) Ask a question or Identify a problem
2.) Research
3.) Form a hypothesis
4.) Experiment
5.) Draw a conclusion

Answer:

A mathematical and experimental technique used in the field of science more specifically for constructing and testing a scientific hypothesis is known as a scientific method. The list of five scientific methods are as follows:

a) Asking a question

b) Developing a hypothesis

c) Examining the hypothesis by performing an experiment

d) Assessment of the data and creating a conclusion

e) Interact and associate the findings or the outcomes with the others.

Which idea best describes why the volume of water in Earth's oceans changes?

A)Inside of volcanoes

B)Inside the atmosphere

C)Bonded to meteorites that hit the Earth

D)Bonded to minerals in Earth's mantle

Answers

The correct option is B.
The volume of water in the ocean changes as the result of constant changes in the water cycle of the earth. The changes in the water cycle is brought about by the evaporation and the condensation of water which happen continuously on the earth and which drive the water cycle.

Answer:

B)Inside the atmosphere

Which of these is true of algae, bacteria, and flowering plants? A They are composed of cells. B They all have chlorophyll. C They all feed off other organisms. D They are inorganic.

Answers

Algae, Bacteria, and flowering plants are composed of cells because everything is composed of cells.

The option which is true about algae, bacteria, and flowering plants is that they all are composed of cells. Thus, the correct option for this question is A.

What is Bacteria?

Bacteria may be defined as single-celled, prokaryotic, and microscopic organisms that lack a well-defined nucleus and other membrane-bound cell organelles. They are most potent to cause numerous diseases in plants and animals.

Except for cyanobacteria, none of the other bacteria have chlorophyll. Some photosynthetic algae have only chlorophyll, while almost all flowering plants possess a chlorophyll pigment.

According to the three premises of the cell theory, all living organisms whether plants or animals are made up of cells because a cell is the only one that is the structural and functional unit of life for each living entity.

Therefore, all algae, bacteria, and flowering plants are composed of cells. Thus, the correct option for this question is A.

To learn more about Cells, refer to the link:

https://brainly.com/question/1399230

#SPJ2

why is the cell membrane sometimes referred to as a fluid mosaic? what part of the cell membrane acts like a fluid? and what makes it a mosaic?

Answers

Fluid mosaic refers to the cell membranes ability to push a substance through the cell which is structure in a ‘mosaic’ like pattern. The fluid part is the lipid tail of the phosphate lipid body. As this rail is hydrophobic it repels water down the tail in a ‘fluid motion’. The mosaic part is the alignment of the cell membrane as it is very structured

The cell's membrane is a crucial component. It is frequently referred to as fluid mosaic because of its shape and behavior. The phospholipid bilayer, is considered fluid and is considered to be the mosaic because of its variety of components.

The phospholipid bilayer, which is composed of lipids and phosphate, allows for selective permeation of the cell membrane. Proteins on the cell membrane perform a number of jobs in the cell, including transport, signaling, and support. Additionally, carbohydrates are affixed to the membrane's surface, where they aid in cell identification and communication.

As a result, the term "fluid mosaic structure" is also used to describe the cell membrane.

Learn more about cell membrane here:

https://brainly.com/question/13524386

#SPJ6

There are twenty different types of _____________ which join together in differing sequences and numbers to form different proteins. A) fatty acids B) amino acids C) nucleic acids D) monosaccharides

Answers

B. Amino Acids. Hope This Is Helpful If Not LMK! :)

B. Amino acids

Hope you did good, and hope anyone who comes across this does

What enzyme forms covalent bonds between restriction fragments?

Answers

DNA ligase is your answer! Hope that helped!

Final answer:

DNA ligase is the enzyme that forms covalent bonds between restriction fragments. It catalyzes the formation of a phosphodiester bond, helping to join DNA strands of restriction fragments. This process, called ligation, is used in DNA manipulation such as DNA cloning and DNA repair.

Explanation:

The enzyme that forms covalent bonds between restriction fragments is called DNA ligase. This enzyme is often used in methods of DNA manipulation such as DNA cloning and DNA repair. In the process known as ligation, DNA ligase catalyzes the formation of a phosphodiester bond between the 3' hydroxyl of one nucleotide and the 5' phosphate of another. This action helps to join together the restriction fragments, thereby attaching the strands of DNA to each other to form a complete, circular molecule. For example, in the field of genetic engineering, DNA ligase is used to combine pieces of DNA from different sources into a composite DNA molecule.

Learn more about DNA ligase here:

https://brainly.com/question/33447701

#SPJ6

A sample of an unknown liquid has a volume of 30.0 mL and a mass of 6 g. What is its density? Show your work or explain how you determined this value.

Answers

Alright, so the formula for density is d=m/v or in words, density is equal to the mass divided by the volume. Since grams (g) is a unit of mass, you will place that at the top of your fraction, and since mL is a unit of volume, it will be placed at the bottom. Your equation will look like D=6/30.0 mL When you answer the question, your unit will be g/mL. Hope this helps!

Answer:

Density of liquid having a volume of 30.0 mL and a mass of 6 g is

[tex]0.2 \frac{g}{ml}[/tex]

Explanation:

Density of a substance is given by mass divided by volume

Mathematically it can be represented as

[tex]D = \frac{M}{V}[/tex]

Where D represents the density

M represents the mass and

V represents the volume

Substituting the given values in above equation we get -

[tex]D = \frac{6}{30} \\= 0.2\frac{g}{ml} \\= 200 \frac{Kg}{m^3}[/tex]

Hence, density of liquid having a volume of 30.0 mL and a mass of 6 g is

[tex]0.2 \frac{g}{ml}[/tex]

How will the increase in the bird population most likely affect the bug population

Answers

Birds eat bugs so the bug population will decrease

Thanks for your question!

If there are more birds, the demand for bugs goes up, which leads to the supply, or amount of bugs going down.

Hope this helps!

what is the main role of the carbohydrate glucose in a living cell

Answers

Answer:

It stores energy.

Explanation:

Carbohydrates are the main source of energy in a Animal cell

how does matter move through an ecosystem

Answers

Matter is recycled within and between ecosystems through biogeochemical cycles.

Hope this helps

Answer:how does matter move through an ecosystem

Explanation:

organelles that modify PACKAGES
and transports materials out of a cell

Answers

The organelle that modifies and packages proteins is the Golgi apparatus. This organelle comprises several flattened sacs called cisternae. The Golgi apparatus, also called the Golgi body or Golgi complex, has two sides or faces, the cis face and the trans face, as described in "The Cell: A Molecular Approach.".

Other Questions

Need help finding the limit as x approaches 0 of (x^2-3sin(x)/x) A bird is flying due east. Its distance from a tall building is given by x(t)=30.0m+(11.7m/s)t(0.0450m/s3)t3. A) What is the instantaneous velocity of the bird when t = 8.00 s Which is true about the battle of Iwo Jima? Allies were able to capture almost all of the Japanese soldiers. There were over 30,000 American casualties. Allies killed almost all of the Japanese soldiers. There were more American lives lost than in any other WWII battle. Contrast Wiesels and Spiegelmans choice of genre.Spiegelmans graphic novel presents the Holocaust using fictional techniques, while Wiesels memoir is true.Wiesels memoir tells the story directly to the reader, while Spiegelmans graphic novel tells the story using pictures and dialogueThe memoir relies on the experiences of others, while the graphic novel relies on the visual memories of one person. What kind of literature is a newspaper editorial?fictionnonfictionpoetry WHOEVER ANSWERS GETS BRAINLIEST AND 20 POINTSThe area of a rectangle is 60 square inches. The length of the rectangle is 7 inches longer than the width. Which equation models this situation?A: w + 7= 60B: 7w = 60 C: w(w+7) = 60D: w + 7w = 60 What number has the same value as 32 tens The components of poison ivy and poison oak that produce the characteristic itchy rash are catechols substituted with long-chain alkyl groups. consider the structural characteristics of catechols and not the properties of the exposed skin. if you were exposed to poison ivy, which mixture would be best for removal of the alkylcatechol? Can I get some help! Show your work The total cost C( in dollars) to participate in a ski club is given by the literal equation C=85x+60, where x is the number of ski trips you take Find the distance between a and b. a = 14/5 , b = 112/65 What is the range of the function y=4e^x The wonders and mysteries of plants provide evidence for::creation:accidental chance:intelligent design:evolution:natural chemical origins Which was an African slave who participated in the Spanish exploration of North America? Ayesha bought a 24-pack of lip gloss for $17.04. What is the unit cost per tube of lip gloss? A. $0.71 B. $8.52 C. $2.84 D. $1.42 Wine is 14 % (by volume) alcohol. How many milliliters of alcohol are in a 0.750-L bottle of wine? Why do we never accept the null hypothesis or the research hypothesis? (instead we either reject or fail to reject)? The length of each side of a square is 3 in. more than the length of each side of a smaller square. the sum of the areas of the squares is 269 in squared . in2. find the lengths of the sides of the two squares. An element has three naturally occurring isotopes. Use the information below to calculate the weighted average atomic mass of the element, showing both the setup and the final answer for the calculation.IsotopeAtomic MassPercent AbundanceI39.96 u99.59%II37.96 u0.065%III35.97 u0.336% The length of a rectangle is 3 m longer than its width. if the perimeter of the rectangle is 42 m , find its area. Steam Workshop Downloader