Answers
Water is called a universal solvent because it can act as a solvent in many
different solutions.
Water comprises of the elements Hydrogen and Oxygen and is very
important which is why it is a compound which is commonly present
everywhere across the earth.
Water is a solvent and has the ability to dissolve different types of solutes
and solutions as a result of its high polarity. The substances must however
be polar too in order for this to take place as water doesn't act as a solvent in
non-polar substances.
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Related Questions
write 4 over 6 in expanded form
Answers
Answer:
4 + 0/ 6 to the 1st power
A scientist needs to test a space vehicle, but it is too expensive to build it to full scale so she builds a
Answers
Answer:
Proportional sized vehicle.
Explanation:
Ph, Acids and Bases Quick Check
Which statement best describes the difference between a substance with a pH of 3.0 and a substance with a pH of 6.0? (1 point)
O The substance with the higher pH has twice as many hydrogen ions per volume of water.
The substance with the lower pH has twice as many hydrogen ions per volume of water.
The substance with the higher pH has 1,000 times as many hydrogen ions per volume of water. O
O The substance with the lower pH has 1,000 times as many hydrogen ions per volume of water.
Answers
Answer: c
Explanation: 3.0 is 1,000 times as many ions
The statement that best describes the difference is ; The substance with the lower pH has 1000 times as many hydrogen ions per volume of water. ( D )
Given that the substance have pH ; 3 and 6
To prove the statement above we will make use of the pH formula
pH = -log(H⁺)
for substance with pH = 3
3 = - log(H⁺)
H⁺ ( hydrogen ions ) = 10⁻³
for substance with pH = 6
6 = - log(H⁺)
H⁺ ( hydrogen ions ) = 10⁻⁶
Hence we can state that the substance with the lower pH has 1000 times as many hydrogen ions per volume of water
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what do you think setting is
Answers
Hey there!
Setting is the place where the events in a story happened.
Hope this helps!
Have a great day!
Which of the following is objective ?
(select all that apply)
A. Opinion
B. Data
C. Fact
Answers
Answer:
Hi Friend! The Answer Is Option C
Objective means someone or something that is without bias
Explanation:
the difference between these two important ideas is the difference between fact and opinion. Facts are objective and opinions are subjective ideas held by individuals and so are always biased. ... This is presented as an objective fact but is clearly a subjective opinion.
19. Identify the appropriate mixed number for the picture
Answers
Answer:
C
Explanation:
you have 1 full square and 1/4 of the other square, making 1 1/4
Helllpppp me
Question 2 of 10
Which of these best describes a scientific theory?
O A. A hypothesis that is proven true with the results of one experiment
O B. An educated guess about an aspect of the physical world
C. The conclusion of one famous scientist about a hypothesis
D. An explanation that is supported by many different experiments
Answers
Answer:
c. conclusion of one famous scientist about hypothesis
Answer:
A.A hypothesis that is proven true with the results of on experiment
what do sea slugs, starfish, octopus, clams, sponges, sea worms, crabs, mussels, squids, and moon jelly have in common?
Answers
Answer:
they live in the water lol
Not really. There actually invertebrates meaning they don't have a backbone.
....spongebob squarepants..
Perform this investigation.
Create a dichotomous key based on the characteristics of various fruits
1. Choose a group of five or more different fruits. It may be helpful to keep a picture of your group of fruits or the fruits
themselves together so that it is easier to make your key and identify the fruits that you are using
2. If you do not have the fruit on hand, look up a picture online or from any other suitable reference material.
3. Carefully examine or think about the characteristics of the fruits and create a dichotomous key using some of these
characteristics. The list provided in the experiment should give you an idea of some of the fruits and/or characteristics
that could be used, but you are free to use any of your own choosing
apples (red)
oranges
bananas
cherries
lemons
pears
tomatoes
watermelons (oblong)
cantaloupes
plums (red)
Answers
Answer:
EXPERIMENT: FRUIT
1a. Red -- Strawberry/Apple
1b. Not Red -- Kiwi/Lime/Orange
2a. Black Seeds and Red -- Strawberry
2b. No Black Seeds and Red -- Apple
3a. Green -- Kiwi/Lime
3b. Orange -- Orange
4a. Black Seeds and Green -- Kiwi
4b. No Black Seeds and Green -- Lime
Answer:
1a. Red -- Strawberry/Apple
1b. Not Red -- Banana/Lemon/Orange
2a. Black Seeds and Red -- Strawberry
2b. No Black Seeds and Red -- Apple
3a. Yellow -- Banana/Lemon
3b. Orange -- Orange
4a. Black Seeds and Yellow -- Banana
4b. White Seeds and Yellow -- Lemon
What would be the best negative control to use when testing for any organic compounds
Answers
Explanation:
A similar question was asked online, here is the answer it gave:
'“Negative control” is a treatment that by definition is expected not to have any effect (neither positive effect, nor negative effect). “Positive control” is treatment with a well-known chemical that is known to produce the expected effect with the assay that you are studying. Application of an antagonist is not a negative control in your case. “Negative control” is condition that should be treated with the same solutions or buffers as your “treatment” condition, with the only difference that instead of the chemical that you investigate you should add just the solvent that was used to dissolve you chemical in the respective final concentration that you have in the “experimental treatment” condition. For example if your chemical is dissolved in DMSO – than the correct negative control will be to add to the medium/buffer just DMSO in the same final concentration that you reach with your “treatment” condition. One of the reasons of using such negative control is to verify that the solvent is having no effect in your assay. Note that among all treatment conditions (“negative control”, “positive control”, “experimental treatment you are investigating”) the volumes and the composition of the treatments that you are doing should be uniform: always treat with the same volume of medium or buffer, always containing the same concentration of the used solvent (e.g., DMSO). The only difference should be the presence or absence of the defined compound-treatments (agonist, antagonist, the chemical for the experimental investigation etc.).'
My best advice is to use the textbook you have, or use examples of a negative control when testing organic compounds because you have to find something that you can assign, like a worm in a box of dirt, the worm could have enough food to survive, so that is your negative control, but when it comes to finding the best, that would have to rely on something within the parameters of being self sufficient like a plant getting its energy from photosynthesis, etc.
Atanasov, Atanas. (2013). Re: Positive control and negative control. Retrieved from: https://www.researchgate.net/post/Positive_control_and_negative_control/515968f2d039b1fe50000025/citation/download.
1. By how much did the three organisms investigated in this activity grow over the course of
ten weeks when the average water temperature was 20°C? (Save the
graphs of data to yourcomputer and paste them below to help answer this question.)
Answers
The graph of growth moves upward and downward due to temperature of the medium.
That organism which grow best in the temperature range from 15°C to 25°C, the graph moves in the upward direction due to the presence of optimum temperature for the growth of that organism.
The organism which grow best in the temperature range from 5°C to 15°C, the graph moves in the downward direction because the water temperature is not suitable for the growth of that organism.
The organism which grow best in the temperature range from 25°C to 35°C, the graph also moves in the downward direction because the water temperature is not good for its growth so we can conclude that the growth rate increases and decreases due to temperature of water.
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plz help answer plz
Answers
Answer:
uses of measurement? I jump on it. uses of measurement? I have translate into your eyes are u c k I'll let me on my k I'm gonna have
Answer:
6. D
7. A
8. B
9. A
10. B
11. C
SUMMARY| CHARACTERISTICTS OF LIFE
lesson question: what does it mean to be living?
Answers
(Side note: haha I just finished this for a class today)
Explanation:
There are many things to define something as living such as certain properties. There properties might include things such as growth and development, there energy source, response to the environment, there internal balance, and reproduction.
These all have a big role in telling us whether something is living or nonliving. What it means to be living is to have certain characteristics nonliving organisms might not have. Like flowers there energy source would be the sun, they grow with water and the sun, and response to the environment could mean like how some flowers grow towards the sun, flowers reproduce with their seeds. To be living is to have everything working together in the right spots at one time. Like how your different body systems work together to keep you alive. (reminder: live your life to the fullest because everything doesnt last forever :)) )
why dose a karyotype need to be made from a cell undergoing mitosis
Answers
Answer:
Because it needs to be made of it.
Explanation:
Im notrude.
Sign an experiment.
A: John Smith has been hired by the city of Virginia Beach to investigate the recent increase in shark attacks off
the resort's coast. The resort has also heard from its guest recently an increased number of elephant seals that
are seen at the beach. Elephant seals are highly migratory and move with the seasons. He has a budget of
$40,000, a 25 foot boat, and three graduate student assistants to help him. A helicopter has also been donated by
a local television station, should he need one.
1. List 2 hypotheses John and his crew may have come up with for the recent shark attacks.
a. If
then
b. If
then
2. Pick one of the two hypotheses and determine the following:
a. Control Group:
b. Experimental Group:
c. Dependent Variable:
d. Independent Variable:
3. What type of data do you think John will collect (What will be the results of the experiment)?
4. What conclusions will John be able to make from the results of the experiment?
Answers
The answers to the questions required for the design experiment above are :
If shark attack are related to the number of elephant seals in an area, then shark attack will increase as the number of elephant seal increases If shark attack are unrelated to number of elephant seal in an area, then shark attack is unaffected by increase or decrease in number of elephant seal. The Control Group : Beaches or areas where elephant seals aren't present or period of the year when there are no elephant seal at the beach. The Experimental group : Beaches where varibale portions of elephant seals are found (area with high, medium or low). The Dependent variable : Number of shark attacks The Independent variable : The different number of elephant seals found. Data to be collected include : The number and type of elephant seals found at various beaches and the number of shark attacks recorded at the various points. John will be able to deduce if the number of elephant seals and number of shark attacks recorded corded are related.The hypothesis of an experiment is a proposition which requires experimental testing in other to establish it's validity.
The Control Group refers to a portion of the subject which aren't given or exposed to the treatment used in an experiment.
The Experimental group are the portion of the subjects which are subjected to the treatment condition.
The Dependent variable is the measured variable is changes as the independent variables are tweaked.
Independent variable is the predictor variable, it causes a change in the output of the dependent variable.
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A science class tested ways to clean water after an oil spill. Each group of students was given 100 mL of vegetable oil, 100 mL of engine oil, and 800 mL of water in a rectangular plastic container. Each container also held five floating wooden cubes (5 cubic centimeters each) representing animals in the water. Each group was tasked with removing as much oil as possible in a 20 minute period, leaving “clean water” in the container, using whatever tools they brought to class. The results of the “clean-up” are presented in the table below.
Group
Vegetable oil removed (mL)
Engine oil removed (mL)
1
10
20
2
110
130
3
60
40
4
80
70
Based on the results above, which group’s data are obviously unreliable?
group 1
group 2
group 3
group 4
Answers
Answer:
water boils at 100°c because of fire because fire contains 500 more heat
Explanation:
tmptre
soln:-
50°c+ water boiling point
=150°c
Answer: B: Group 2
Explanation:
Just did on Edge :0
Which of the following describes
bacteria?
A. single-celled eukaryotes that are usually found in
contaminated water or insect bites
B. living, single celled organism that are the most
common pathogen and can be treated with antibiotics
C. multicellular organism that usually is found on the
surface of skin and warm, moist, and dark places
D. non-living pathogen that can't be treated with
antibiotics and reproduces with a host

Answers
Answer:
B. All of them could be the answer but B is the one that describes bacteria the best. good luck.
Which is mostlikely to be an introduced species become invasive?
Answers
Answer:pidgeons
Explanation:
The earth's surface tends to lose heat in winter. Which of the above cities would have the warmest average winter temperature? Why?
Since the sun is approximately 93 million miles from the earth and space has no temperature, how do we get heat from the sun?
How would the uneven energy absorption by different surfaces on earth (water, soil, snow, trees, sand, etc.) affect the atmosphere?
Answers
Explanation:
Of the energy that reaches the Earth from the Sun, a small amount is absorbed by the atmosphere, a larger amount (about 30%) is reflected back to space by clouds and the Earth's surface, and most of it is absorbed at the planet surface and then released as heat.
Energy is transferred between the Earth's surface and the atmosphere in a variety of ways, including radiation, conduction, and convection.
Molecules of all substances, even solids, have random motion and therefore an associated kinetic energy and temperature. ... Completely empty space would have no temperature since there are no molecules there.
(this is not much but hope it helps u)
will give branliest for CORRECT answer! please help
Answers
can someone please help me with this!!
Answers
Answer:
YES ITS TRUE
Explanation:
The trend of the periodic table has nonmetals __________.
A.
on the left
B.
on the right
C.
on the bottom only
D.
scattered throughout the entire table
Answers
Answer:
B. on the right
Explanation:
The trend of the periodic table has non metals on the right. Except for hydrogen, which is a nonmetal located in the left side of the periodic table.
Answer:
❁ Hello! ❁
The trend of the periodic table has nonmetals B. on the right.
what what is the function of muscles tissue in point
Answers
Answer:
The functions of muscle tissue are as follows;
1.Muscles allow a person to move, speak, and chew.
2.They control heartbeat, breathing, and digestion.
3. its main function is to allow movement.
4. It help in the circulation process.
5. it is needed to maintain good postures.
Although we think of land when we hear the word biome, there are also aquatic biomes. The abiotic factors that
influence life forms vary with location within ocean systems. Oceanographers divide the ocean into five broad vertical
zones as seen in the chart above. Compare the characteristics of the five zones. The giant tube worms, Riftia
pachyptila, pictured here, have a red "plume at the tip of their free end which is an organ for exchanging compounds
with the environment. The tube worm does not have many predators. If threatened, the plume may be retracted into
the worm's protective tube. The plume provides essential nutrients to bacteria living inside the worm. Tube worms
have no digestive tract, but the bacteria, which may make up half of a worm's body weight, convert the oxygen,
hydrogen sulfide, carbon dioxide, taken in by the plume, into organic molecules on which their host worms feed.
Compare this information with the information in the chart. Where could these worms live?
A)
The tube worms can only live where there is no light: zones 3, 4, and 5.
B)
C)
Only in the top-most two zones so the bacteria can use the light for
photosynthesis.
In any zone in the ocean, provided it was not too cold and there is enough
oxygen in the water
They tube worms are suited to live in the halad zone only, where there is
no light and it is extremely cold.
D)
Answers
Answer:
D) They tube worms are suited to live in the halad zone only, where there is no light and it is extremely cold.
Explanation:
Although these tube worms reside in the trenches of the Halad zone at the lowest layer, they survive in darkness and freezing temperatures. Additionally, there are other species of starfish that inhabit this area, thus the starfish are also companions.
what's a Gologi apparatus
Answers
Answer:
a complex of vesicles and folded membranes within the cytoplasm of most eukaryotic cells, involved in secretion and intracellular transport.
Made up of different
species living in the same
area
Answers
where does the glucose that is released into the blood ultimately end up (2 places)?
Answers
Answer:
During that process, glucose is released. It goes into your intestines where it's absorbed. From there, it passes into your bloodstream. Once in the blood, insulin helps glucose get to your cells.
PLEASE MARK ME BRAINLIEST.Please help me..
Please answer correctly
Answers
Answer:
See the procedure given in the attachment
What does g/mL measure?
Answers
Answer:
The answer is Density
Explanation:
g is the unit of Mass
cm³ is the unit of Volume
The Mass is divided by Volume is gives Density
Thus, The answer is Density
-TheUnknownScientist
Answer:
density the upper one is right
What factor affects the root system?
Answers
Answer: Their growth is strongly affected by the environmental conditions found in the root zone.
Explanation: To survive and grow, they need Air (gas exchange), Water, Non-limiting Temperature, Carbohydrates, Minerals, Space, Low Soil Density, Microbial Associations and Non-toxic soil chemistry.
