Answer:
Explanation:
ANSWER
If the number of electrons in the outermost shell of an atom of an element is less than or equal to 4, then the valency of an element is equal to the number of electrons in the outermost shell.
If it is greater than 4 then, the valance is determined by subtracting the outermost shell of electrons from 8.
The electrons in Cl, S, and Mg are 2,8,7 ; 2,8,6 ; 2,8,2
Hence the valency of Cl, S, and Mg are 1, 2, 2 respectively.
Answer:
Chlorine has 7 valence electrons
Magnesium has 2 valence electrons
Sulphur has 6 Valence electrons
Explanation:
We can find how many valence electrons by looking at the periodic table. For instance chlorine is a halogen and therefore has 7 valence electrons as it is in group 17. Magnesium is in group 2 so therefore has 2 valence electrons.
Sulphur is in group 16 and therefore has 6 valence electrons.
If the group has double digits I.e 16 like sulphur we only look at the second digit i.e. 6 as we can't have more than 8 valence electrons.
what is Skeletal major organs and structures?
Answer:
The skeletal system is your body's central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments. It's also called the musculoskeletal system.
Explanation:
what is the Biogenesis Theory?
Answer:
Biogenesis is the production of new living organisms. Conceptually, biogenesis sometimes attributed to Louis Pasteur and encompasses the belief that complex living things come only from other living things, by means of reproduction.
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What is an adaptation another species have developed to resist the toxic sting of a nematocyst?
Answer:
The mouth covered by chitin and intracellular granules of chitin (i.e. spindles) in nudibranchs
Explanation:
Nudibranchs are marine gastropod molluscs (Opisthobranchia, Mollusca). These organisms are carnivorous, so they feed on sponges, coral, anemones, hydroids, fish eggs, etc. On the other hand, cnidarians have specialized cells called cnidoblasts or cnidocytes that contain nematocysts made up of toxins that serve as a defense mechanism. Nematocysts are found in many species of Cnidarians such as, for example, in the tentacles of sea anemones. Interestingly, nudibranchs have developed some adaptations for feeding on these species. In the first place, nudibranchs have the mouth covered by a substance named chitin that allows them to chomp and swallow anemone tentacles. Second, they (nudibranchs) also have intracellular granules of chitin (i.e. spindles) in the digestive system that function as biological sandbags which maintain nematocyst toxins away from sensitive body parts.
The mucus coat of clownfish protects the fish from sea anemone's sting which is an adaptation clownfish developed.
What is Nematocysts?Nematocysts are cells found in which is use for locomotion and for defence and capturing prey.
Nematocysts contain coiled threadswhich is like hairlike projections called which are sensitive to touch and can penetrate the body ofprey.that may bear barbs. Nematocysts is found in Sea anemone, Hydra and so on and it is use to capture prey.The clown fish have mucus coat which prevents nematocysts from penetrating through it and hence ensures it's defence from been attacked or captured as prey by Sea anemone.Therefore, The mucus coat of clownfish protects the fish from sea anemone's sting which is an adaptation clownfish developed
For more details on nematocysts check the link below.
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state two functions performed by bile juice
Which two statements describe evidence that directly led to the development of the theory of plate tectonics?
A.Sonar confirmed the presence of mid-ocean ridges.
B.Each continent has its own unique mountain formations.
C.Fossils of plants found in South America differ from fossils found in Africa.
D.Seismic data showed that most earthquakes and volcanoes occur where crust is being formed or destroyed.
Answer: The answer is A and D
Explanation:
Jus pick it if you trust me
Two statements that describe evidence that directly led to the development of the theory of plate tectonics? a) Sonar confirmed the presence of mid-ocean ridges. d) Seismic data showed that most earthquakes and volcanoes occur where crust is being formed or destroyed.
What is plate tectonic theory?According to this theory, the earth's surface is separated by plates that move above the molten mantle. Over the plate borders, these plates interact with one another, causing friction.
What is seismic data?Seismic surveys provide a scan of the earth's subsurface using reflected sound waves.
By knowing the speeds at which seismic waves move through rocks at various places and depths, we can learn about geologic formations on the earth. and describes the way an area will tremble during an earthquake.
Hence, options (a) and (d) are correct.
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Help ASAP! tell me if am right ty
Answer:
you are right
Explanation:
In each drawing, there are lines between each atom and each molecule. What do you think the lines between atoms represent? The lines between molecules?
Answer:
Atoms are the smallest units of matter that still retain the fundamental chemical properties of an element. Much of the study of chemistry, however, involves looking at what happens when atoms combine with other atoms to form compounds. A compound is a distinct group of atoms held together by chemical bonds. Just as the structure of the atom is held together by the electrostatic attraction between the positively charged nucleus and the negatively charged electrons surrounding it, the stability within chemical bonds is also due to electrostatic attractions. To illustrate further, consider the two major types of chemical bonds: covalent bonds and ionic bonds. In covalent bonds, two atoms share pairs of electrons, while in ionic bonds, electrons are fully transferred between two atoms so that ions are formed. Let’s consider both types of bonds in detail.
Explanation:
Answer:Each straight line segment represents a bond, the ends and intersections of the lines are carbon atoms, and the correct number of hydrogens is calculated from the tetravalency of carbon. Non-bonding valence shell electrons are omitted in these formulas.Each line represents a single covalent bond (two shared electrons), so double lines represent a double covalent bond (four shared electrons). Covalent bonds are usually found in atoms that have at least two, and usually less than seven, electrons in their outermost energy shell, but this is NOT a hard and fast rule.
Explanation:
Why are chromosomes important to mitosis?
Answer:
The daughter cells need a copy of every chromosome in order to replicate and separate.
Explanation:
Cells have to replicate their genetic material to make a whole other cell. Before mitosis the cells need this step for mitosis.
Answer:
The fundamental importance of chromosomes is that they contain DNA, or deoxyribonucleic acid, the substance that contains every organism's genetic code. When a cell divides, its chromosomes must first replicate. Cells divide in two basic ways – mitosis and meiosis. The latter type of division incorporates the former.
Explanation:
summary of the electron transport chain
Which principle states that sedimentary rocks are deposited as large
sheets of sediment?
Lateral Continuity
original horizontality
Correlation
WHICH BODY SYSTEM IS A LOOP?
A.) Circulatory
B.) Nervous
C.) Respiratory
Answer:
A. circulatory
Explanation:
HELP ASAP! PLZ ANSWER OF YOU KNOW IT
Answer:
its basically a layer that helps to absorb light energy there have a pog day friend
Mendel found common ratios of traits among the offspring.
Is this true or false?
Answer:
Explanation:
Although Mendel's principle of independent assortment states that alleles of different ... Sometimes, alleles of certain genes are inherited together, and they do not ... and it generally describes an inheritance pattern in which two genes located in ... In this case, the ratio of phenotypes observed among the offspring is 9
Describe one important piece of machinery in plant cells, and how that machinery helps keep plant cells alive. Pleas help. This is a school assignment.
(This is 7th grade science).
Answer:
Cytoplasm
Explanation:
The Cytoplasm is a Jelly-like substance, where chemical reactions take place.
Help ASAP PLZ! CORRECT ME IF AM WRONG TY BOYS AND GIRLS
What is Mendel famous for doing? What did he want to learn from this experiment?
Answer:
Mendel discovered the basic principles of heredity through experiments in his garden.
Explanation:
His experiments showed that the inheritance of certain traits in pea plants follows particular patterns, subsequently becoming the foundation of modern genetics and leading to the study of heredity.
Answer:
he bred pea plants
Explanation:
Mendel bred pea plants and discovered that there are multiple alleles for every gene. some are dominant and others are recessive.
Song suggestions??? lmk
any song written by lil peep, some great starters are beamer boy and star shopping, I personally love Haunt You, Give You The Moon, and Nuts.
help me asap i’ll mark brainliest! pls and thanks
Answer:
Winter
Explanation:
summer is going to start in june. Winter start from December to February.
please answer these
Explain how oceanic crust is continuously created at mid-ocean ridges.
What are the importance of familiarizing the functions of carpentry tools and equipment
plss paki sagot
Answer:
Each tool is precisely designed for a specific purpose, so choosing the correct tool will also decrease the amount of effort required to get a job done right without causing damage to either the equipment or the surface
A vector covers what
what is the random distribution of chromosomes during meiosis called
genetic variation
recombination
crossing over
independent assortment
Answer:
It is : independent assortment
Explanation:
Explains:
When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. This is called independent assortment. It results in gametes that have unique combinations of chromosomes.
1. Which aspects of soil do you think are easiest to change? Which are more difficult
change? Why?
The most difficult property of a soil to modify is fertility, while the easiest property to modify is texture.
What is the ground?Soil is the surface part of the earth's crust, biologically active, which comes from the disintegration or physical or chemical alteration of the rocks and the residues of the activities of living beings that settle on it.
What are the main properties of the soil?Some of the soil properties are:
Texture. Soils vary among themselves according to the elements that constitute them and their texture changes according to the quantity and size of the particles that form it.Fertility. Soils vary among themselves according to their level of fertility, that is, according to their ability to support plant life.PH. Soils vary from each other according to their level of acidity (pH). The pH is measured on a scale that goes from 1 to 14, with 7 being a neutral pH, less than 7: acidic and greater than 7: basic.Mutation. Soils change over time and due to factors such as the decomposition of organic waste, excessive rainfall, among others.Permeability. Soils vary among themselves according to their permeability, that is, the ability to filter water and air.Structure. Soils vary among themselves according to the way in which the elements and materials that constitute them are grouped.Salinity. Soils vary among themselves according to the percentage of accumulated soluble salts they have.Porosity. The soils vary among themselves according to the number and structure of the pores, which are those soil spaces that are empty, that is, they are not formed by solid matter, but by water and air.What is the easiest and most difficult soil property to modify?The easiest property to modify of the floor is the texture because if we want a more rigid or softer floor we can replace it with any material that is available for that purpose. However, this does not guarantee other properties such as fertility, salinity, good pH, among others.
On the other hand, the most difficult soil property to modify is fertility, since this property is the result of very specific physical and chemical processes. For example, we cannot modify the fertility of the soil of a desert.
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During cellular respiration every living thing in this food web uses gas and releases back into the environment
Answer:
B) oxygen:carbon dioxide, because of the process of Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining processes and discarding, as waste products, carbon dioxide and water.
Explanation:
what are the defense mechanisms of the human body
Explanation:
The human body has three primary lines of defense to fight against foreign invaders, including viruses, bacteria, and fungi. The immune system's three lines of defense include physical and chemical barriers, non-specific innate responses, and specific adaptive responses.
The human body possesses several defense mechanisms to protect itself against pathogens (disease-causing microorganisms) and other harmful substances such as innate and adaptive immune system.
Innate immunity is the body's first line of defense and is present from birth. It provides immediate protection against a wide range of pathogens. Adaptive immunity is a specific defense mechanism that develops over time in response to specific pathogens. It provides long-lasting immunity and has the ability to recognize and remember specific pathogens. Both innate and adaptive immunity work together to provide a comprehensive defense against pathogens. Innate immunity provides rapid, general protection, while adaptive immunity offers specific, targeted responses. The coordination between these defense mechanisms helps the body combat infections and maintain overall health.
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what is a positive effect on an ecosystem?
Answer:
Ways in which people positively affect ecosystems around the world include Recycling. Establishing wildlife preserves and parks. Creating green, open space laws.
Explanation:
How do different types of forces affect objects?
ITS 58 POINTS!
Answer:
Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity.
Explanation:
I have a question.... my teacher today in biology said " you think you are moving your hand by yourself, but it's actually your brain sending commands to your muscles so they can move." So I wondered.. is my brain sending commands so I can think, or am I thinking whenever I have a desire to? (Not a trick question; My friend thinks this is a trick question lol).
Answer:
To answer this question you have to think, "What am I really" to answer that you are your brain. When you say "am I thinking whenever I have a desire to" your brain is the "I." You think when your brain wants you to think. It rules everything that happens. It creates thoughts and commands all parts of the body.
Explanation:
Hello need help ASAP! plz answer if you know the answers
Look at the digestive system, tell me if i did some thing wrong. Thank you guys
Answer:
yes this should be correct
Explanation: