Does anyone know how to solve this?? Pls help ASAP ;(
(sorry that it’s not in focus)
I'm assuming your equation is (y^4*y^n)/y^2=y^-3 correct?
Exponent rule: a^b*a^c=a^(b+c)
(y^4*y^n)/(y^2)=y^-3 becomes (y^(4+n))/(y^2)=y^-3
Exponent rule: a^b/a^c=a^(b-c)
New equation becomes y^(2+n)=y^-3
Get rid of the bases and you're left with 2+n=-3
Subtract 2 on both sides: n=-5
Answer is n=-5
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what is allele?differentiate between gene and allele.
Answer:
Alleles are responsible for the variations in which a given trait can be.
Explanation:
A gene is a portion of DNA that determines a certain trait. An allele is a specific form of a gene. Genes are responsible for the expression of traits.
Answer: Alleles are responsible for the variations in which a given trait can be.
Explanation:
The observed results of an oxperiment that occur from changes in the test variable (independent variablo) are known as _
A.
outcome variables
B.
trials
c.
D.
constants
controlled variables
Answer:outcome variables
Explanation:
Answer:
outcome variable it correct a f
Explanation
4. A small population of chimpanzees lives in a habitat that undergoes no changes for a long period.
How will genetic drift probably affect this population?
a. It will accelerate the appearance of new traits.
b. It will promote the survival of chimpanzees with beneficial traits.
c. It will increase the number of alleles for specific traits.
d. It will reduce genetic diversity.
Genetic drift is the dramatic almost sped up process of natural selection due to the untouched habitat the species I lives in. Genetic drift is characterized by the changing in alleles, whether more or less, natural selection could care less as long as they're creating diverse populations.
Answer:
It will reduce genetic diversity by decreasing the frequency of some alleles and increasing the frequency of others.
Explanation:
Flvs (05.02A MC)
Ecosystem distribution is related to precipitation; regions that receive large amounts of precipitation are wet and therefore
Ecosystem distribution is related to precipitation; regions that receive large amounts of precipitation are wet and therefore have increased vegetation.
Explanation:
Precipitation in the form of rain and climate determines the vegetation of an ecosystem. Ecosystems with abundant rainfall will have dense vegetation and one with scarce rainfall will have limited or no vegetation.
Tropical rainforest ecosystems receive large amounts of rainfall distributed year round and have thick vegetation.
Water is the prime growth factor for plants and rainfall is the main source of water for plants. Any ecosystem, maybe a desert, grassland, fertile plain, bushlands, evergreen forest etc depend upon rainfall.
The rainfall determines the density of vegetation, the type of vegetation, greenness, structure of plants or trees like foliage, height, branching etc
Ecosystem distribution is related to precipitation, as high rainfall areas can sustain richer and more diverse biomes, including tropical wet forests and aquatic biomes. Conversely, regions with lower precipitation often have less diverse ecosystems. Climate change also plays a significant role in ecosystem distribution.
Explanation:Ecosystem distribution can indeed be related to precipitation. In regions that receive large amounts of precipitation, the environment is typically wet and rich in biodiversity. This moisture can lead to the formation of various types of biomes, including tropical wet forests that exhibit high net primary productivity due to the warm temperatures, abundant water, and a year-round growing season. Other ecosystems, such as aquatic biomes, are shaped according to different factors, including density and temperature, as well as the amount of sunlight available.
On the other hand, regions with lower precipitation like deserts and the tundra have a lower primary productivity and less diverse ecosystems due to extreme temperatures and a lack of available water.
Climate change is another important factor impacting the distribution of ecosystems, as changes in temperature and greenhouse gas concentrations can affect the living conditions of various species and disrupt their habitats.
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What do micro-algae and macro-algae have in common?
Answer:
Both algae and microalgae serve as excellent food sources in aquatic ecosystems. They produce most of the oxygen in the atmosphere during photosynthesis. Both algae and microalgae serve as natural filters of phosphates and nitrogenous wastes.
pls pls pls help!! i will make brainliest!!
1. RNA
2. Nucleic acid.
3. Units.
4. DNA.
5. Protein.
6. Transcription
7. Molecules
8. Units
9. Amino acids.
10. Translation.
Explanation:Protein synthesis and the RNA synthesis is the total process that takes place together in each and every cell which is the Central Dogma theory.
In this theory, the RNAs are produced from the DNA by means of the process of transcription. In this process, the enzyme DNA dependent RNA polymerase acts as the primary DNA.
In the second step, the RNA produces the protein by the process of translation. This process involves the participation of each and every types of RNA like the rRNA, tRNA, and mRNA. These RNAs are all involved to form proteins by accumulation of amino acids and polymerizing them to form proteins.
Nitrogen atoms are part of the structure of some organic molecules, such as all amino acids and some modified carbohydrates. What other organic molecules contain nitrogen?
Explanation:
The nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and protein synthesis.
Basic makeup: C, H, O, P; they contain phosphate group 5 carbon sugar does nitrogen bases which may contain single to double bond ring.
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Answer:
nucleotides
Explanation:
Have a good day :)
Exploring the Orbits of Dwarf Planets
Use the information from the article to answer the question.
Dwarf Planet
Which statements apply to the orbits of dwarf planets? Check all that apply.
Dwarf planets orbit the Sun.
Pluto could collide with Jupiter
Dwarf planets are round.
Pluto is a dwarf planet
Eris could collide with Uranus
Answer:
A,C and D on edu
Explanation:
Dwarf planets, including Pluto and Eris, orbit the Sun and are spherical. They won't collide with other planets due to the nature of their orbits.
Explanation:The statements that apply to the orbits of dwarf planets include:
Dwarf planets orbit the Sun.Dwarf planets are round.Pluto is a dwarf planet.Pluto and Eris, among other dwarf planets, follow an elliptical path around the Sun that does not risk collision with Jupiter or Uranus. These celestial bodies have an orbital path that ensures designed space and no interference with other planets' orbits.
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Consider the demographics of a hypothetical low income country versus a high income country. Consider the total fertility rate (TFR) of the two countries. What statement would NOT apply in evaluating their TFR's? A) The low income country exists in a lower stage of demographic transition. B) In the high income country women have more access to educational resources. C) The low income country relies on agriculture for subsistence; the high relies on technology. D) We would expect to find adequate health care in the high income rather than the low income country.
C) The low income country relies on agriculture for subsistence; the high relies on technology
Explanation:
While all four statements apply equally to a comparison of demographics of poor and rich countries, this statement regarding means of subsistence has no overall effect on fertility rate or its treatment as such.
While access to education would mean better understanding of reproduction and hence availability of healthcare in case of complications.
The means of sustenance in themselves are insignificant for this metric.
In the family tree below, people with the recessive trait of attached earlobes
are shaded gray.
What must be true about the person labeled "A"?
O
A. It is a female with two dominant alleles.
O
B. It is a female with at least one dominant allele.
O
C. It is a male with at least one dominant allele.
O
D. It is a male with two dominant alleles.
Answer:
B. It is a female with at least one dominant allele.
Explanation:
In pedigrees, a circle corresponds to a female, and a square to a male. The person labelled A is a circle, so must be a female.
Affected individuals are shaded grey. In this case, we are looking at the trait of attached earlobes, which is recessive. To have the trait you need two recessive alleles. This female is not affected, meaning she does not have two recessive alleles, one of her alleles must be the dominant allele.
That means, either she is heterozygous (has one dominant allele and one recessive allele) or homozygous dominant (two copies of the recessive allele)
The electron transport chain is common to both respiration and photosynthesis. However, there are some differences
in the steps involved in the electron transport chain in both processes. The table lists some steps in the electron
transport chain
Which of these CORRECTLY shows where the steps take place?
In photosynthesis, the electron transport chain (ETC) occurs in the thylakoid membrane of chloroplasts. In contrast, in cellular respiration, the ETC takes place in the inner mitochondrial membrane. This creates a proton gradient that drives ATP synthesis in both processes.
Explanation:In both photosynthesis and cellular respiration, the electron transport chain (ETC) takes place in the membrane structure of the cell. However, the location within that structure varies between the two processes. In photosynthesis, which occurs in plants and some bacteria, the ETC occurs in the thylakoid membrane of the chloroplasts. Here, light energy is used to move electrons from water to NADPH. In cellular respiration, which happens in all living organisms, the ETC is located in the inner mitochondrial membrane and it helps move electrons from NADH and FADH2 to oxygen, which is then reduced to water. The flow of electrons through these ETCs creates a proton gradient that drives ATP synthesis.
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Which concept is not a part of the theory of evolution
Answer:
I believe the options are:
1) Present day species developed from earlier species .
2) Some species die out when environmental changes occur .
3) Complex organism develop from simple organisms over time .
4) Change occurs according to the needs of an individual.
The answer is 4) Change occurs according to the needs of an individual.
Explanation:
Theory of Evolution:
By definition, evolution is the process of change in an individual's/organism's characteristics over time. Evolution occurs through mutations in the genetic information or DNA of an individual. The theory of evolution states that all organisms change over time and are descendants of a single common ancestor. Species adapt to the changing environment by introducing variations in their DNA over millions of years. Harsh environment conditions eliminate organisms that cannot adapt to the changing environment and only the fittest survive. This is called natural selection.This process, occurring over millions of years, results in the formation of an entirely new species. The theory of evolution is contrary to the concept of Lamarckism or inheritance of acquired characters which states that characters that an organism acquires during its lifetime can be passed on to its offspring.what were characteristics of the Roman empire at its height there are more than 1 answer
Answer:
did not suffer any major wars
Explanation:
Answer:
The Roman Empire, at its height (c. 117 CE), was the most extensive political and social structure in western civilization.
Terms in this set (8)
gov. a federation of many self-ruled cities and states rather than a uniform bureaucratic state.
citizenship, laws, and legal penalties. not uniform but varied according to the status. ...
senate. ...
infantry. ...
other religions. ...
slaves. ...
patriarch of a family. ...
roman women.
Explanation:
Suppose the two possible alleles for the height gene are tall and short. If short is recessive to tall, provide the symbol representation and the phenotype for each of the genotype for this trait.
Answer:
The possible symbol representation and phenotypes will be :
Homozygous dominant: TT, the phenotype will be tall height.
Heterozygous: Tt, The phenotype will be tall height.
Homozygous recessive: tt, the phenotype will be short height.
Genotype can be described as the genetic makeup of an organism which occurs due to the different alleles present in an organism. The phenotype can be described as the physical appearance of traits in an organism.
Some viruses are RNA-based—ejecting their single-stranded RNA into the cell of a host. Let's say we are dealing with this type of virus. We also find it to be the type of RNA-based virus that has its RNA strand first converted into a complementary RNA strand using the host cell's RNA polymerase. Then this viral complementary RNA strand is used by the host cell's ribosomes to make new proteins.
If an RNA-based virus like the one we have here were to be considered a living thing, make an argument as to why the virus's RNA would be considered its primary source of heritable information. Also explain why this virus's primary source of heritable information would NOT be the DNA, RNA, or RNA polymerase of the infected cell.
The DNA, RNA or the RNA Polymerase of the infected cell would not be virus's primary source of heritable information because it has the ability to integrate into host cell and get itself replicated, also it causes infection so multiplication becomes necessary.
Explanation:
The virus has reverse transcriptase enzyme in them which works slightly different. It transcribes RNA into DNA and eventually gets integrated into the genome of the host. It is here the DNA in the host cell is transcribed and translated. Thus it is modelled to have RNA as genetic material.
When virus infects the living cell by a process called a lytic infection, it injects its genetic material into it to get replicated and increase its number and eventually bursts the infected cell. Since a virus causes infection, it has to increase in number so it uses its own genome to get replicated.
EXERCISE
Fill in the blank.
1. To form a multicellular organism, a zygote must divide many times in a process called
2. Adult stem cells are considered _, as they can differentiate into several different cell
types in the tissue where they are located.
3. Induced pluripotent stem cells are adult stem cells that have been treated so that they act like
4. A cell produces a chemical that diffuses short distances to reach nearby cells. This type of
cell-cell interaction is an example of
Respond to the following based on your reading.
5. What is tissue, and how does it relate to individual cells?
Answer:
From Penn Foster
Exercise: Cell and Tissue Development in Multicellular Organisms
A good answer should contain the following:
1. cell proliferation
2. multipotent
3. embryonic stem cells
4.paracrine signaling
5. A tissue is a group of cells that work together to perform specific functions. Tissues require a mix of cells oriented properly and dividing at the rate necessary to replenish and maintain the tissue. Cells in tissue are constantly processing and responding to signals they obtain from their environment.
6. An organism's DNA serves as an instruction booklet of sorts for how to create the organism. In this analogy, one cell type reads one chapter of this genetic instruction manual, and another cell type reads a different chapter. Specific genes are turned off and on to control gene expression for compounds needed by different tissues of the body to allow differentiation into various cell types.
7. Totipotent cells can differentiate into any of the cells in an organism, plus any of the extraembryonic cells; pluripotent cells can differentiate into any of the cells of an organism; multipotent cells can differentiate into a few specific cell types based on the tissue in which the multipotent cell is located. A zygote is totipotent, human embryonic stem cells and induced pluripotent stem cells are pluripotent, and adult stem cells are multipotent.
Explanation:
From Penn Foster
The answer to the blanks are :
Cell proliferation.MultipotentEmbryonic stem cells.Paracrine signaling.A tissue may be a gather of cells that work together to perform particular capacities."Cell and Tissue Development in Multicellular Organisms"
1)To form a multicellular organism, a zygote must divide many times in a process called cell proliferation.
2)Adult stem cells are considered multipotent , as they can differentiate into several different cell types in the tissue where they are located.
3) Induced pluripotent stem cells are adult stem cells that have been treated so that they act like embryonic stem cells.
4) A cell produces a chemical that diffuses short distances to reach nearby cells. This type of cell-cell interaction is an example of paracrine signaling.
5) Tissue and relate to individual cells
A tissue may be a gather of cells that work together to perform particular capacities. Tissues require a blend of cells situated appropriately and separating at the rate essential to renew and keep up the tissue. Cells in tissue are always handling and reacting to signals they get from their environment.Learn more about "Tissue":
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In mitosis, how does the number of chromosomes in a daughter cell compare to the number of chromosomes in a parent cell?
Question 10 options:
The daughter cell has one-fourth the number of chromosomes.
The daughter cell has one-half the number of chromosomes.
The daughter cell has twice the number of chromosomes.
The daughter cell has the exact same number of chromosomes.
The daughter cell has the exact same number of chromosomes
In mitosis, when the number of chromosomes in a daughter cell is compared to the number of chromosomes in a parent cell, the daughter cell has the same number of chromosomes as the parent cell.
What is mitosis?Mitosis is the division of a parent cell into two identical daughter cells, each with the same number of chromosomes.Meiosis, on the other hand, results in four distinct daughter cells, each with half the number of chromosomes as the parent cell.During the mitotic process, daughter cells are formed from the parent cell and have the same chromosome number as the parent cell.During mitosis, equatorial division occurs, resulting in two daughter cells with identical genetic makeup.Mitosis is traditionally divided into five stages: prophase, prometaphase, metaphase, anaphase, telophase, and cytokinesis.
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Which of the following processes have contributed to the evolution of the Earth over time?
I. the motion of crustal plates
II. the rock cycle
III. radioactive dating
IV. erosion
V. deposition
A.
I and IV only
B.
II, III, and IV only
C.
I and II only
D.
I, II, IV, and V only
Answer:
D. I, II, IV, and V only
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the incomplete metamorphosis consists of three stages: egg, nymph, and adult.
1. egg
2. nymph
3. adult
the answer is egg
Answer: Egg
Explanation: There are basically two types of metamorphosis: complete and incomplete metamorphosis. In complete metamorphosis, the insect passes through the egg, larva and pupa stages before emerging as an adult. In incomplete metamorphosis, the egg hatches into a nymph, and the emerges into adult without passing through the pupa stage.
Stages of complete metamorphosis are egg, larva, pupa and adult. Stages of incomplete metamorphosis are egg, nymph and adult
What is the internal environment and explain how it is related to the inside of a cell, the interstitial fluid and to the outside world?
Internal environment and its relation with inside cell
Explanation:
Internal environment of an organism is water-based where the body cells exist.The fluid known as tissue fluid washes the body cells.Oxygen and nutrients are carried to the cells from Internal Transport system of the body. Interstitial fluid is found in between the spaces of cell. It comes out from the substances that flow out from the blood capillaries. Oldertissue fluid is replaced by new fluid where older flood drains towards lymph vessels.The internal environment is the environment within an organism's body, including inside a cell and the surrounding interstitial fluid. It is closely related to the outside world as changes in the external environment can affect the internal environment.
Explanation:The internal environment of an organism is the environment within its body, made up of the cell's inside environment and the interstitial fluid that surrounds the cells. The inside of a cell and the interstitial fluid together create a stable environment that allows the cells to function properly and maintain homeostasis.
The internal environment is crucially related to the outside world. Changes in the external environment can directly or indirectly affect the internal environment. For instance, changes in temperature can affect the cellular metabolism while changes in nutrient composition can influence the available substances for the cells. Thus, an organism needs to constantly adapt to changes in the external environment to keep its internal environment steady and function normally.
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Common cold spreads faster and is difficult to control”,Give
reason .
Answer:
Common cold is a viral disease that spreads easily through air and affect the healthy person.
Explanation:
Common cold spreads by more than 200 virus species include rhinovirus,picornavirus etc. that affects the respiratory tract in the human body. This virus is dangerous because it can easily spreads through air and contact with the affected person like shaking hand or by touching any object .The virus may alive for a long period of time that is more than 18 hourThus this is difficult to control and is prevented by routine hand wash and to keep distance from the affected person so that it can't contaminate through the affected person.What’s the meaning of diagnoses
Answer:
A diagnoses is something a person has whenever they are sick or have something the doctor tells them they have a diagnoses.
Explanation:
Which organelle provides protection and support to a cell?
Cell wall
Cytoplasm
Nucleus
Ribosome
Answer: cell wall
Explanation: a cell wall is a complex protective structure which gives shape and protection to a plant cell.
Among the functions of a cell wall is maintaining the structural integrity of a cell and providing strength. Because a cell wall has semi-permeable outer layer, it filters molecules that pass in and out of the cell hence, acting as a defense structure against a variety of external factors. It has pores and receptors that regulate various functions of the cell.
The organelle that provides protection and support to a cell is A. Cell Wall.
What is a cell wall ?The cell wall is a rigid structure that surrounds the cell membrane. It is made up of cellulose, a long, chain-like molecule that is found in plants. The cell wall provides support and protection for the cell. It helps to maintain the cell's shape and to protect it from damage.
The cytoplasm is the jelly-like substance that fills the cell. It is made up of water, proteins, carbohydrates, lipids, and other molecules. The cytoplasm contains all of the cell's organelles, except for the nucleus. The cytoplasm is where most of the cell's chemical reactions take place.
Option A is correct.
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Two steel balls that are the same mass and size are rolled with the same force across different level surfaces.
The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of
A) air resistance.
B) friction.
C) gravity.
D) speed.
Answer:
The reason why the ball rolling across carpet will come to a stop faster than the one rolling across concrete is the friction (option B).
Explanation:
The contact surface on which the balls move is different. Irregularities in the carpet cause the ball in it to stop faster. The concrete surface is less irregular, and allows the ball to move a little more and then stop. This is due to friction.
In physics, friction is a force that is capable of opposing movement, since the contact of two surfaces limits its movement. A smooth surface produces less friction than a rough or irregular surface.
Since the friction that stops both balls occurs when they are in motion, it is called dynamic friction, that is, the force that causes a moving body to stop.
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Answer:For usa test prep im pretty sure it is friction
Explanation:
Two steel balls that are the same mass and size are rolled with the same force across different level surfaces.
The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of
A) air resistance.
B) friction.
C) gravity.
D) speed.
Answer:
The reason why the ball rolling across carpet will come to a stop faster than the one rolling across concrete is the friction (option B).
Explanation:
The contact surface on which the balls move is different. Irregularities in the carpet cause the ball in it to stop faster. The concrete surface is less irregular, and allows the ball to move a little more and then stop. This is due to friction.
In physics, friction is a force that is capable of opposing movement, since the contact of two surfaces limits its movement. A smooth surface produces less friction than a rough or irregular surface.
Since the friction that stops both balls occurs when they are in motion, it is called dynamic friction, that is, the force that causes a moving body to stop.
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The ball rolling across the carpet will come to a stop faster than the one rolling across the concrete because of friction.
Frictional force refers to the resistance force experienced by a moving object on a surface as a result of the opposing tendency of the surface.The smoother a surface is, the lower the frictional force it offers, and the more coarse a surface is, the more frictional force it offers.Two steel balls rolling on two different surfaces would experience similar forces. However, a carpeted surface is more coarse and irregular than a concreted surface.
Thus, the frictional force on the carpeted surface would be more and the ball would stop faster as opposed to the concrete surface.
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economic importance of earthworm
Answer:
economic importance of earthworm?
Earthworm has so many economic importance which are listed below;
Aeration of soil
Add humus to the soil
Helps to increase soil fertility and
Explanation:
A pea plant that is tall has a dominant trait. Which statements are true about the genotype/phenotype relationship of the plant?
Select all that apply.
a. If the phenotype is tall, the genotype must be tt.
b. The genotype Tt always results in a phenotype that is tall.
c. When the genotype is Tt, the phenotype will be short.
d. When the phenotype is tall, the genotype can either be TT or Tt.
Answer:
B. & D.
Explanation:
Answer:
your answer is d and b
Explanation:
Rosalind Franklin’s photographs of the X-ray diffraction pattern of DNA provided important clues about the structure of the DNA molecule. What was revealed by the photograph that enabled Watson and Crick to build their model of the DNA molecule? Select all that apply. A. The nitrogenous bases form the backbone on the outside of each DNA strand. B. The DNA strands are twisted around each other. C. There are two strands in the DNA molecule. D. The nitrogenous bases are near the center of the DNA molecule.
Answer:
The correct answers: B, C and D.
Explanation:
X-ray diffraction studies of the DNA reveal the following:The DNA is comprised of two strands which are coiled around each other in the shape of a helix.The backbone of the DNA is made up of phosphate and deoxyribose groups, alternately, which are exposed towards the outside of the helix.The nitrogenous bases which form the hydrogen bonds that link the two helices are directed towards the centre of the helix.The atomic and molecular arrangement of the compound subjected to the X- rays can be defined by using the X-ray diffraction method.
The photograph enabled Watson and Crick to develop their DNA molecule structure and revealed:
Option B. The DNA strands are twisted around each other. Option C. There are two strands in the DNA molecule. Option D. The nitrogenous bases are near the centre of the DNA molecule.This can be explained as:
The DNA fragment comprises two antiparallel strands.They are in a twisting style and form a helical formation.The DNA molecule includes sugar, nucleotide and phosphate in alternative styles in helical formations.The phosphate and the sugar are projected to face outwards, while the nitrogenous bases face inwards.Therefore, DNA is a double helical arrangement with two antiparallel strands containing nitrogenous bases, sugar and phosphates.
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A substance with a pH of 10 is called
a
O water.
O a base.
O neutral.
an acid.
Answer: A base
Explanation: pH is the measure of the alkalinity or acidity of a substance. In a pH scale, the values ranges from 1 to 14, substances having lower pH values are said to be more acidic while substances with higher pH values are more alkaline or basic. Substances that have pH value of 7 is said to be neutral. pH values ranging from 1 to 6 is acidic while pH values from 8 to 14 is alkaline or basic.
A substance with a pH of 10 is called a base.
Explanation:A substance with a pH of 10 is called a base. pH is a measure of the acidity or alkalinity of a substance, with pH values ranging from 0 to 14. pH values below 7 indicate acidity, while pH values above 7 indicate alkalinity or basicity.
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