Alcohol is used to extract caffeine
Tea's chief component is cellulose, which is not soluble in water. Caffeine is water soluble, but so are tannins and gallic acid, which have been established during the heating process of tea leaves. The latter two components can be converted to insoluble in water calcium salts.
What is solubility?The maximum amount of a substance that will dissolve in a given amount of solvent at a given temperature is defined as solubility.
Solubility is a property of a specific solute-solvent combination, and the solubilities of different substances vary greatly.
It is one of the critical parameters for achieving the desired drug concentration in systemic circulation for the desired (anticipated) pharmacological response.
Caffeine is more soluble in nonpolar methylene chloride than in water, so it will migrate to the methylene chloride layer (known as the organic layer). Because the organic layer is denser than water, it will be at the bottom.
Thus, water can not be used to dissolve the caffeine found in coffee and tea.
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Give the Chemical name of four commercial fertilizers.
Answer:
urea(contains nitrogen),sodium nitrate,Ammonium Sulphate ,Muriate of Potash.
Explanation:
Nucleus is found in...
A. prokaryotic cells.
B. eukaryotic cells.
C. all cells.
Answer:
Eukaryotic cells
Explanation:
Prokaryotic cells do not have a nucleus but eukaryotic cells do.
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C. Eukaryotic cells.
All cells can be classified into two groups: eukaryotic and prokaryotic. Eukaryotes have a membrane-enclosed nucleus and organelles, whereas prokaryotes do not.
PA answer plss
Tama o Mali
1.nang bubbly NG kapwa
Answer:
mali
Explanation:
masama po ang mang bully ng kapwa natin
Answer:
*bully?? Mali,kase di dapat binubully Yung kapwa
functions of courtship behaviour
Answer:
to ensure that the two individuals are of the same species
Explanation:
It also involves stereotyped behaviours. Courtship behaviour informs a potential mate that the intention is breeding and not aggression.
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Answer:
Courtship can be defined as the behavior used to obtain copulation with a partner, or to maintain reproductive interactions with an existing partner.Courtship, in animals, behaviour that results in mating and eventual reproduction. Courtship may be rather simple, involving a small number of chemical, visual, or auditory stimuli; or it may be a highly complex series of acts by two or more individuals, using several modes of communication.It help strengthen a pair bond that may last through the raising of the young or even longer.Courtship is its use as an isolating mechanism, a method of keeping different species from interbreeding.
One species has 24 chromosomes, and another species has 26 chromosomes. If these two species are crossed, how many chromosomes will their offspring have?
Species A : 2N = 24, N = 12
Species B : 2n = 26, n = 13
During the hybridization N + n = 25
Condensation of water droplets causes the formation of
A. rain
B. lakes
C. clouds
D. water vapor
Describe which factors of an ecosystem are not part of a community.
Answer:
The abiotic factors include water, air, rocks, and sunlight are not part of a community.
Jane is doing an experiment to find out how the size of a bowl affects the growth of the goldfish living in that bowl. She has three identical goldfish. She puts them in three bowls of different sizes. Every day, Jane looks at the goldfish in each bowl. In addition to looking, what should she do?
Answer:
maybe she should feed the gold fish
She should change the water she should change the container to see the change 'cuz there will be a change.
Answer:
C: Record her observations each day
Explanation:
I got it correct.
Complete the sentences using the given words.
caldera cinder cone crater
a. A(n) ____________ is a bowl-shaped depression that surrounds the vent at a volcano's summit. b. A(n) ____________ forms in the depression left when an empty magma chamber collapses. c. The type of volcano that is the smallest and has the steepest slopes is called a(n) ____________.
Answer
A) crater
B) caldera
C) composite
3-carbon-atom (3C) molecule produced in glycolysis is called______________________. Inside a eukaryotic cell, this molecule moves from ______________to ________________ and is oxidized into _____________. If oxygen is not present, it gets reduced into _____________ (in yeast) or ______________(in our muscle cells). Production of ATP in the absence of O2 is called____________________.
Answer:
PYRUVATECYTOPLASMMITROCHONDRIAACETYL COAETHANOL AND CO2LACTIC ACIDANAEROBIC RESPIRATION(FERMENTATION)Write a paragraph explaining how adhesion, cohesion and capillary action all enable water to go from the roots to the top of a tall tree.
Answer:
Capillary action helps bring water up into the roots. But capillary action can only "pull" water up a small distance, after which it cannot overcome gravity. To get water up to all the branches and leaves, the forces of adhesion and cohesion go to work in the plant's xylem to move water to the furthest leaf.
Explanation:
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Water is moved up through the plant by capillary action from the soil.
Hydrogen connections between water molecules give them a sticky property that allows them to form droplets. Droplets can stick to the plant because of adhesion.
what is capillary action?Capillary action is the movement of liquid along a solid's surface induced by the attraction of the liquid's molecules to the solid's molecules.
The movement of a liquid across the surface of a solid induced by adhesion between the two is known as capillary action.
The higher the water climbs on its own, the narrower the tube becomes. Water is forced up the columns of cells in the xylem and through fine tubes in the cell wall by adhesion in plants.
The transport of water through the plant is known as capillary action. When the adhesion is stronger than the cohesion, this movement happens. The attraction between water molecules is natural. The transient hydrogen bonds that they form are the source of their attraction.
what is adhesion and cohesion?The act of attaching one thing to another is known as adhesion. Water adheres to the organic tissues of plants thanks to adhesion.
Cohesion is the property that allows molecules of the same substance to stick together.
Water molecules are held together by cohesion in plants. Intermolecular attraction leads liquids to create a top or outer layer that acts like a thin film.
The shape of water drops is determined by surface tension, which also holds structures together as they absorb water.
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Chamges in blood are automatically and routinely made by the body In order to direct appropriate amounts of________and________to specific parts of the body?
Help Asap!!
Answer:
What is Oxygen & Nutrients
Explanation:
Changes in blood are automatically and routinely made by the body In order to direct appropriate amounts of OXYGEN and NUTRIENTS to specific parts of the body.
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describe how the moon appears to move across the night sky. First person to awnser correct in the next 6 hours will be marked brainless
Answer:
The Earth is rotating
Explanation:
The Earth is rotating on it's axis
Imagine that the climate in your region became extremely arid, and freshwater became a scarce and precious resource. Wasteful uses of water, such as watering lawns and filling swimming pools, would be strictly outlawed, and water from the municipal water supply would cost 100 times what it does now. Discuss how you would adapt to that situation.
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One way to adapt to this situation would be by reducing water use to strictly necessary activities and collecting water from alternative sources such as rain.
What would change in this situation?Due to scarcity, in this situation, people could not use water for recreation such as water in pools, and in general water usage is limited.
How to adapt to this situation?Possibilities are restricted in this situation since it is not a good idea to continue using water excessively. Instead, the best is to:
Adapt to the change by limiting water use to necessary activities such as cooking.Try to find out alternative water sources such as collecting water when it rains.Learn more about water in: https://brainly.com/question/4381433
What are some ways that chromosomes can be structurally abnormal
Answer:
Delations: A portion of the chromosome can be missing or deleted
Duplications: A portion of the chromosome is duplicated resulting in extra genetic material
Translocations: A portion of one chromosome is transfered to another.
A person jogging from the forest to the office covers the 6,800
meters in 2 hours. Their speed is not constant and they slow down
and speed up at various times. What is their average velocity?
Round the answer to the hundredths place if necessary.
a 1.9 m/s north
b. Impossible to calculate since the speed wasn't constant.
C. 0.9420/s north
d. 56.67 m/s north
e. 1.34 m/s north
f. 0.56 m/s north
Answer:
b
Explanation:
In the water cycle, at some point water vapor (gas) turns back into a liquid, we
call this precipitation. The liquid is typically in the form of rain, snow, or hail.
Which of the following properties is the reasoning behind the formation of a rain?
(Multiple Choice)
a. Universal Solvent
b. Cohesion
C. Adhesion
d. Surface Tension
e. Homeostasis
A family builds a home on top of a hill. The hill has several large trees but almost no grass or shrubs. The family wants to prevent the soil on the hill around the house from continuing to erode. Describe a strategy that would help them stop the erosion.
Answer:
Remove trees to add less weight and the house should be fine after.
Which of the following best describes gasoline?
Solid
Low energy
Stable
Combustible
What is procedural memory?
1._______ is what farmer should do in order that plant will grow fast and productive?
2._______a practice to help promote the growt of root's and improve aeration for fast absorption by the soil.
4._______is also called rows cultivation and is done only by cultivating the soil in rows or between the two plants are being cultivated.
5._______is cultivating the soil towards the base of the plant or cultivation around the plant.
Answer:
1.Planting
2.Cultivating
4.Tilling
5.Hilling Up
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1. Convection current causes the lithospheric plate to
A. move slowly but constantly
B. move faster
C. move in any direction
D. create another plate
______________________
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CAN YOU BRAINLEST ME
Describe trilateration. Provide an example.
Entre los siguientes métodos de separación de mezclas, Jorge debe seleccionar el adecuado para separar sal de una mezcla de sal y agua, en la que la sal se encuentra completamente disuelta.
50%
Teniendo en cuenta la composición de la mezcla, ¿cuál de los anteriores métodos debe usar Jorge para separar la sal?
Evaporación, porque con este método se evapora el agua y queda únicamente la sal.
Evaporación, porque este método únicamente se usa para separar líquidos.
Filtración, porque la sal y el agua se mezclan muy bien.
Filtración, porque la sal es blanca y el agua transparente.
Teniendo en cuenta las definición de evaporación, la respuesta correcta es la primer opción: para separar la sal, Jorge debe usar la Evaporación, porque con este método se evapora el agua y queda únicamente la sal.
El método de separación utilizado para el agua y la sal es: la evaporación.
La evaporación consiste en pasar el soluto disuelto en un liquido a estado gaseoso y ocurre al aumentar su temperatura de forma natural o artificial,. Dependiendo de que se desea evaporar se utiliza el material correspondiente. La técnica mas común es por contacto y puede acelerarse si utilizamos un material conductor dentro del liquido.
En otras palabras, se conoce que la evaporación es el proceso por el cual las distintas moléculas en estado líquido, como lo es en agua, pasan a un estado gaseoso de manera espontánea, siendo este el principal efecto de la evaporación.
Como se mencionó el método de separación utilizado para el agua y la sal es la evaporación. Durante este proceso, al aplicar calor, el agua se convierte en vapor y se libera al aire. La sal, como tiene otro punto de ebullición, no se evapora.
Entonces, la respuesta correcta es la primer opción: para separar la sal, Jorge debe usar la Evaporación, porque con este método se evapora el agua y queda únicamente la sal.
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https://brainly.com/question/17429780?referrer=searchResultsHow does the sucrose molecule leave the body?
Answer:
Short word, "Pee/Urine"Explanation:
If your drinking water then color of your Pee is based what you drink.Question 1): Photosynthesis and cellular respiration are often described in two ways: 1) they are chemically opposite; and 2) they have a relationship to each other. Explain what these two statements mean. Be sure to include the specific substances used and released by each process. Question 2) Your skin is constantly producing new cells through cell division. How does this happen? During interphase, how does a cell prepare for division? Describe cell division, including the processes of mitosis and cytokinesis. Be sure to describe the mitotic steps. Question 3) Mitosis and meiosis are similar processes, but they have some very important differences. Explain how mitosis and meiosis are alike and how they are different. Provide at least two similarities and three differences. ( Please Do Not Repost Someone Else's Answer that is on Brainly Or Any Other Websites) Will Mark Brainliest .
Explanation:
Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.
Based on the evidence shown, two objects that have___ electric charges will ___ each other.
Which of the following levels of organization is the smallest and simplest?
a. chemical level
b. cellular level
c. organ system level
d. organ level
Answer:
celllular level, chemical level, organ level, and organ system level
Explanation:
Organ system level is the is the smallest and simplest in the levels of organization.
What is Organ system level?It is one of the smallest and simplest levels of organization in which includes:atoms molecules organelles cells tissues organs organ systems and the human organism.So, Organ system level is referred as the smallest and simplest in the levels of organization. (option c)
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Describe the elements and compounds of coal being mined
Answer:
The organic compounds in coal are composed of the elements carbon, hydrogen, oxygen, nitrogen, sulfur, and trace amounts of a variety of other elements
Coal is a mixture of organic compounds and minerals formed from ancient plant material, primarily composed of carbon, hydrogen, and impurities like sulfur and nitrogen.
Coal is a mixture of organic compounds and minerals, resulting from the decomposition of ancient plant material over millions of years. It primarily consists of carbon, hydrogen, oxygen, nitrogen, and sulfur. Carbon, the dominant organic compound, makes up a substantial part of coal's composition, with hydrogen and oxygen occurring in lesser amounts.
Nitrogen and sulfur are present as impurities, in the form of organic compounds and mineral components. Coal also contains inorganic minerals like quartz, clay, and pyrite, contributing to its ash content. Trace elements, such as mercury, arsenic, and lead, are present in low concentrations. The exact composition varies based on coal type and location, influencing its energy content and environmental impacts.
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The complete question is:
Describe the elements and compounds of coal being mined.
HELP NEED ANSWER IN AT LEAST 5 MINUTES will mark brainliest A single cell can be an organism. O True O False
Answer: Yes
Explanation: All organism need energy to survive and carry out basic life functions. Mitochondria in these cells utilize ATP (which are energy molecules) to perform these functions. Even one cell can do this. ... These are all types of cell division that help categorize single-celled organisms as living organisms.