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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Use the periodic table from the lesson to answer the following question.
The atomic mass of F is.
9
10
19
55
Answer:
19
Explanation:
Fluorine's atomic mass is 18.99 which rounds up to 19 which is on your selection of choices.
PLEASE HELP WITH THIS ONE QUESTION
Answer:
one negative one positive feedback loop
Groups of similar specialized cells that carry out particular functions form A. eukaryotes O B. organs O C. tissues D. organelles
Answer:
Learning Task 3. Solving word problems involving multiplication of deci-
the
A cstep in solving word problems. Do these in your notebook. ),
1. A clerk is paid P 45.25 per hour for 40 hours a week, 1.50 times the
regular rate for overtime and double the rate for a holiday. How much
holiday?
2. fofkmputer programmer earns a regular hourly rate of P50.00. If he
worked 42.75 hours in a week, how much did he earn?
3. Arthur earns P1350.00 a day. He sets aside 0.10 of this for savings.
How much does he save in a month?
4. Mr. Fernandez has a monthly pay of P 5,450. The tax deducted from
year?
5. Dianne works 2.5 hours a day from Monday to Friday and 3.75 hours
his a
on Saturday. If he is paid P25.00 per hour, how much does he earn in
a
week
Learning Task 3. Solving word problems involving multiplication of deci-
the
A cstep in solving word problems. Do these in your notebook. ),
1. A clerk is paid P 45.25 per hour for 40 hours a week, 1.50 times the
regular rate for overtime and double the rate for a holiday. How much
holiday?
2. fofkmputer programmer earns a regular hourly rate of P50.00. If he
worked 42.75 hours in a week, how much did he earn?
3. Arthur earns P1350.00 a day. He sets aside 0.10 of this for savings.
How much does he save in a month?
4. Mr. Fernandez has a monthly pay of P 5,450. The tax deducted from
year?
5. Dianne works 2.5 hours a day from Monday to Friday and 3.75 hours
his a
on Saturday. If he is paid P25.00 per hour, how much does he earn in
a
week?
Answer:
Groups of similar specialized cells that carry out particular functions form. tissues
What is the value of a transitional fossil?
Transitional forms show the evolutionary steps between species.
Transitional forms are analogous fossils.
Transitional forms discredit the theory of evolution.
Transitional forms are proof of punctuated equilibrium in evolution.
The value of a transitional fossil is that its forms are analogous fossils.
What is Transitional fossil?These are fossilized remains of organisms which exhibits traits common to
both an ancestral group and its derived descendant group.
Analogous fossils possess similar structures and functions but evolved
differently thereby making the transitional form the same as it being
analogous.
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Answer:
A
Explanation:
On Edge2022 :)
Where do heterotrophs get phosphorus from?
Answer:
Heterotrophs rely on organic material and remineralize nutrients such as nitrogen and phosphorus when they are in excess of requirements.
HELP PLEASE!!!explain how Earth is heated through conduction
As it's known conduction needs a medium for heat transfer and during the day, sunlight rays pass through the Earth's atmosphere and near the earth's surface is where most heat transfer by conduction occurs since air is a poor conductor. Thus, the sunlight hits the earth's surface(ground) and in turn heats the air above it and transfering the heat.
It must be known that conduction happens mostly near the earth's surface.
Answer:
Conduction is one of the ways that energy is transferred from the earth's atmosphere to the air. Conduction is the process by which heat energy is transmitted through collisions between neighboring molecules. Think of a frying pan set over an open camp stove.
Explanation:
Which term best completes the following analogy?
Elements : Atoms: Covalent compounds: _________
A. Bonds
B. lons
C. Mixtures
D. Molecules
Answer:
C. Molecules
The best term that completes the analogy is Molecules
In a crosstab, the cells show:
Answer:
The cells in a crosstab show summary data for the corresponding row and column, based on a measure and a summary function. The simplest crosstab is a frequency matrix, such as the following example, which shows the count of pets (measure) by gender (column) and species (row). Example of a simple crosstabExplanation:
8. A wise old wizard once told me that when your muscles use ATP they are really using light
energy. What did the wise wizard mean?
Answer: in humans, we don't use light energy to make ATP but in plants however, they create ATP in a proccess called photosynthesis, this process requires light to be absorbed twice, once in each photosystem, and it makes ATP. In fact, it's called photophosphorylation because it involves using light energy (photo) to make ATP from ADP (phosphorylation)
Explanation:
explain how waxes are important to leaves and ducks
here you go
Explanation:
Plants also use waxes as a protective coating to control evaporation and hydration and to prevent them from drying out. Waxes are valuable to both plants and animals because of their hydrophobic nature. This makes them water resistant, which prevents water from sticking on surfaces.
Imagine you have been shipwrecked and are floating on a small piece of wood in the middle of the ocean. You are terribly thirsty and take a drink of seawater (3.5% salt). What do you think happens to your stomach cells (1% salt), and why?
Given the higher salinity of the ocean water in comparison to your stomach cells, you will lose water from your cells and become dehydrated.
Osmosis is a phenomenon that shows that in the presence of a space in which the solute concentration is higher than its current location, water will travel towards that more concentrated space in an attempt to dilute the concentration.
The urge to drink is what we call being thirsty. This urge has a biological origin. It is the body's way of telling you that your cells need more water, which leads us to often consume any water we have available. This is not always in our best interest.
However, due to osmosis, drinking the seawater would only have a negative effect on your stomach cells. As stated in the question, the cells contain less concentration of solute (in this case salt) than the water. This means that instead of entering the cell, water would leave to dilute the new seawater, thus dehydrating you more and worsening your condition.
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I'm strugglinnnn, it's not C just to let you know✋
Answer:
D
Explanation:
i know
Hi! Does anyone know the answer to this question? Will mark brainliest!
What is shown in this illustration?
A. continental-continental convergence boundary
B. oceanic-oceanic convergence boundary
C. oceanic-continental convergence boundary
D. hot spot
Answer:I promise you it is hot spot
Explanation:
When nonionic solids dissolve in water, they
Answer:
Substances that do not form ions when they dissolve in water are called non-electrolytes. And example of a non-electrolyte is sugar. Sugar will readily dissolve in water but doesn't form cations and anions in solution. That is, there are no charge carriers formed.
Primary productivity is not limited by _______.
a.
the availability of sunlight
b.
time
c.
the availability of nutrients
d.
access to water
Please select the best answer from the choices provided
A
B
C
D
Type your response in the box.
Explain why it's important for scientists to study the Sun. List at least two challenges researchers face when
examining Earth's nearest star.
Answer:
its very important in our day to day life
Explanation:
the sun is our closest star and there are many theorys about it that need to be proven right or wrong
Understanding the Sun will help us better understand stellar life cycles and the origins of our solar system. The cost of the equipment needed to research the Sun is prohibitive. The Earth's distance from the Sun must also be considered, as well as how equipment must resist the Sun's intense heat.
Please give brainliest.
Pollution has negative effects on plants, animals, and people. Which choice would be least likely to cause water pollution?
Answer:
plants
Explanation:
because animals can maybe poop or pee on the water .and also people are the same too.so plants are the least likely to cause water pollution
What is the name of the process That forms to DNA molecules from 1? Lol help plz (UwU)
Answer:
Replication
Explanation:
Think its correct
URGENT PLEASE:
Explain how a lack of carbohydrates will impact cellular functions and why?
Answer:
Carbohydrates they say is the major classes of food and don't forget they are stored by stach in the body and gives your body energy
Carbohydrates are degraded into sugar which, as a primary source, is required for the brain, muscles and other parts of the human body to function normally.
When you don't get enough carbohydrates, the level of sugar in your blood may drop to below the normal range (70-99 mg/dL), causing hypoglycemia.
Using ___ is one way of planting where a seed is allowed to germinate in box or boxes before planting the soil.
Answer:
Plantig seeds
Explanation:
Which of following is found in the Terai region?
i. Langtang national park
ii. Khaptad national park
iii. Makalu Barun national park
iv. Bardia national park Garnment and
Answer:
1.is the answer to the question
Mark me as brainlestWhat is the purpose of technology?
A. Creating political pressure
B. Finding new scientific discoveries
C. Solving problems
D. Regulating the government
The purpose of technology is to solve problems and improve various aspects of human life. Option C.
The purpose of technology is multifaceted and encompasses various objectives.
However, at its core, technology is developed to address challenges, solve problems, and enhance different facets of human existence. Whether it is improving efficiency, increasing productivity, advancing communication, or creating innovative solutions, technology aims to provide practical and tangible benefits.
Technological advancements enable us to overcome obstacles and improve the quality of life.
From medical technologies that diagnose and treat diseases to renewable energy sources that combat climate change, technology plays a pivotal role in finding solutions to complex problems. It empowers us to tackle issues in areas such as healthcare, transportation, agriculture, education, and environmental sustainability.
Furthermore, technology drives scientific discoveries and innovation. It provides scientists with tools and methodologies to conduct research, gather data, and analyze information, leading to new insights and understandings of the world.
Technological advancements in fields like computing, artificial intelligence, and genetic engineering have opened up new frontiers for exploration and scientific breakthroughs.
While technology can be used for political advocacy, social mobilization, and improving governance processes, these are additional applications rather than its fundamental purpose.
The primary aim of technology is to address challenges, solve problems, and enhance human experiences in various domains. It serves as a catalyst for progress and development, shaping the way we live, work, communicate, and interact with the world around us. SO Option C is correct.
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aproximately how many HeLa cells are there?
Over the course of 26 years, 600,000,000 HeLa cells have been produced in my laboratory each week, for a total of 800 billion cells. That is a lot of cells, but it's nothing compared with the total number of cells – approximately 100 trillion – that make up a human.
13. Processes and ships proteins
out of the cell.
Answer:
Golgi Apparatus
Explanation:
What is the role of diaphragm?
Answer:
The role of the diaphragm is breathing
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N.) Effects of human Intervention of the nitrogen cycle-
To best display the distribution of sex (male, female, other), we could use:
Answer:
i guess it's gender
hope this helps
PLS ANSWER NOW THANK YOU :):) NEED HELP QUICKIn
1-2 sentences, describe the process of deposition and explain how it creates new landforms. :):)
Deposition is the geological process in which sediments, soil and rocks are added to a landform or landmass. Simply when layers of eroded material pile to create new landforms. For example, coastal deposition is how beaches are formed.
The geological process of deposition involves the addition of sediments, soil, and rocks to a landform or landmass. when eroded debris is piled up in layers to produce new landforms.
What is deposition?A deposition is testimony made under oath and taken down in writing by an authorized officer of the court, typically in an out-of-court setting and before trial.
Depositions are usually taken from key witnesses, but can also involve the plaintiff or defendant, to give the involved parties a fair preview of all the evidence.
The individual making the deposition is known as the deponent and false statements can carry civil and criminal penalties.
Therefore, The geological process of deposition involves the addition of sediments, soil, and rocks to a landform or landmass. when eroded debris is piled up in layers to produce new landforms.
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Describe the various types of cells in the human body
Explanation:
The cells inside our bodies are “specialized.” This means that each type of cell performs a unique and special function. For this reason, each of the 200 different types of cells in the body has a different structure, size, shape, and function, and contains different organelles.16 Jul 2018
https://www.healthline.com › health
How Many Cells Are in the Human Body? Fast Facts - Healthline
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