A student finds that the mass of 25mL of an unknown liquid is 20.5g. What is the density of this substance?

Answers

Answer 1

Answer:

Density, [tex]d=0.82\ g/cm^3[/tex]

Explanation:

It is given that,

Mass of unknown liquid is 20.5 kg

Volume, V = 25 mL

We know that, 1 mL = 1 cm³

25 mL = 25 cm³

The density of the substance is equal to its mass per unit volume. So,

[tex]d=\dfrac{m}{V}\\\\d=\dfrac{20.5\ g}{25\ cm^3}\\\\d=0.82\ g/cm^3[/tex]

So, the density of this substance is [tex]0.82\ g/cm^3[/tex].

Answer 2

Answer:

0.82

Explanation:

just took test


Related Questions

Bears eat berries, humans, and large fish; large fish eat smaller fish and insects; humans eat bears, large fish, and berries; Venus flytraps eat insects. The scenario described here is an example of ______.

Answers

Food webs show how food chains are connected and what an ecological group eats. Therefore, this scenario represents a food web.

What is a food web?

An ecological community's food web is a graphical representation of the natural connectivity of food chains as well as the question of what consumes what in that community. The term "consumer-resource system" is another name for the "food web."

There are often two distinct kinds of food webs present in an ecosystem: a grazing food web that is supported by photosynthetic plants or algae, and a detrital food web that is supported by organisms that decompose dead matter (such as fungi).

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Introduction to biochemistry mastery test

Answers

Answer:

Explanation: DescriptionGRE Subject Biochemistry, Cell and Molecular Biology was a standardized exam provided by ETS that was discontinued in December 2016. It is a paper-based exam and there are no computer-based versions of it. ETS places this exam three times per year: once in April, once in October and once in November.

If there is a 1-degree change, coral reefs will become______?

Answers

Answer:

warmer

Explanation:

The primary function of the lymphatic system is The primary function of the lymphatic system is the production and distribution of plasma proteins. the transport of hormones. the production and maturation of leukocytes. circulation of nutrients and dissolved gases. defending the body against both external and internal threats.

Answers

Answer:

The primary function of the lymphatic system is defending the body against both external and internal threats.

Explanation:

The set of tissues and organs that participate in the immune response is known as the lymphatic system. Its main functions are to maintain the volume of blood and participate in the defense of the organism. It is made up of organs, vessels, nodes and lymphatic tissue. This system fulfills three basic functions: Defense: in the lymph nodes, the lymphocytes reproduce to respond to antigens; fat absorption: most of the fats are absorbed by the lymphatic system and subsequently transported to the blood and capillary exchange: it recovers substances that the blood flow has lost in the capillary exchange.

The principal function of the lymphatic system is to remove strange or damaging substances from tissues and eliminate them. The correct option is defending the body against both external and internal threats.

------------------------------

Among other functions of the lymphatic system, its principal one is the removal of damaged cells, cancer cells, and protection of the body against the virus, bacteria, and fungi that might affect it.

The lymphatic system remove these elements from the tissues for their elimination.

All these strange microorganisms and waste substances get filtrated in the lymphatic ganglia.

Ganglia are small organs located all along with the net of lymphatic vessels, that function as lymph accumulation centers.

Lymph passes through these organs and gets filtrated and purified of waste substances.

Inside each ganglion, the lymphocytes T and lymphocytes B help the organism to fight these infections.

B cells produce antibodies that impede infection propagation by trapping the microorganisms and destroying them.

Most lymphatic ganglia are grouped near the neck, underarm, and groin.

They are also grouped in the chest, abdomen, and pelvis, where they filter blood.

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the definition in a cladogram

Answers

Answer:

a branching diagram showing the cladistic relationship between a number of species

Dump out half of the particles. Place your hand tightly over the top and shake the container. Then remove most of the remaining particles, and shake the container again. Compared with the full container, which states of matter do these two models most closely represent? Explain.

Answers

Answer:

solid

Explanation:

The two models explained are most closely representing the "solid" state.

As in both the models the techniques used are to separate particles through shaking technique and shaking is efficient gravity separation method which helps in separating solid particles such as while dealing with tungsten and tin.

Hence, the correct answer is "Solid".

Answer:

When the container was half full, the particles had more freedom to move around than they did when the container was full. A half-full container represents a liquid. When the container had only a few particles, they had lot more freedom to move about. So, this model represented a gas.

Explanation:

plato answer

please give the correct answer to this question​

Answers

Answer: Lymphatic system

Explanation:

Not respiratory and excretory for sure.

Not nervous because the diagram doesn't show spinal nerves clearly. So its lymphatic system.

:-)

1.What are the scope of environment education? Explain any 3 of them. 2.What are the scope of health education? Explain any 3 of them

Answers

Answer:

[tex] \boxed{\bold{ \orange{See \: below}}}[/tex]

Explanation:

[tex] \bold{ \green {Scope \: of \: Environment \: education}}[/tex]

Environmental education includes the study of various factors of the environment which affect the health of human beings. Environment comprises all the factors in our surroundings. It includes even abstract factors , which do not have weight , length and breadth. Cultural traits , social norms and values, feasts and festivals etc. are some of the examples of abstract aspects. Some of the scopes of environment education are described below:

Physical aspect ( soil , water , air , rocks , gases etc )

The physical aspect included non- living things on the earth. They are soil, water , air , rocks , gases etc. Environment education gives knowledge about the status of soil , water , air , rocks , gases and other various physical components of the earth. It aims to make students aware of the effects and consequences of human activities upon these factors. It also gives knowledge to raise environment friendly attitude and behavior among the students .

Biological aspect ( biology , agriculture , forestry etc )

The biotics factors include living plants and animals , their life mechanism , interrelationship etc. Some of the educational streams related to the biotic aspects are biology , agriculture , and forestry. They are some of the important scopes of the environment education. This branch of education helps to develop the level of knowledge , attitude and behavior regarding these factors in the students.

Socio - cultural aspect ( sociology , civics , religion , ethnicity , anthropology etc )

Environment has some of the abstract aspects too. Abstract aspects include religious , cultural , ethnic and social norms and values. Some of the educational streams dealing with this aspect are sociology , civics and anthropology. Environment education also teaches students about such abstract factors, which play vital role in the environment.

[tex] \bold{ \green{Scope \: of \: Health \: education}}[/tex]

In general , scope of health education can be understood as the areas included in health education. Health education not only communicates knowledge about body features and diseases, but also includes the matters concerned with healthy surroundings , human psychological states affecting health , public health, human anthropology , medical science and so many other things. Any three scopes of health education are as follows:

Home

Home is the residence of all people. Home is the first school for all. A child passes the primary days of life at home. Every individual learns the basic skills if survival at home. Proper time to wake up in the morning , to start daily sanitary schedules, to eat , to practise all other health behavior are learnt at home. The child lives in community and learns many more about healthy social adjustment in the social environment. Health education aims to raise the level of knowledge , attitude , and behavior related to health and healthy life.

School

Children go to school for formal education and spend most of active hours of a day. They achieve several forms of health knowledge and develop healthy attitude and practise accordingly. Their heath status depends upon the environment of school , health curriculum, healthful school environment , co-curricular and extra - curricular health activities.

Community

Community is a place where many people live with their families. People's health is determined by the several factors in the community. Health education teaches about these factors like community sanitation , drainage , health service providing organizations and health centers.

[tex] \mathsf{Hope \: I \: helped !}[/tex]

[tex] \mathsf{Best \: regards !}[/tex]

3. Calcium carbonate is the majour component of marble. Sulphuric acid one of the majour components of acid rain. Write a balanced chemical quation to show how the corrosion of marble statue by the acid rain.

Answers

Answer:

here

Explanation:

CaCO3 + H2SO4

-----> CaSO4 + H2O + CO2

CER

Can someone help me with these questions? Thank you.

Answers

Answer:

1.C

2.E

3.C

4.R

5.E

6.R

7.E

8.C

9.E

(do not take my word for it maybe wait for someone else to answer to compare to mine)

Which of these statements can be predicted with the help of science

Answers

Answer:

Something that can be tested, or rationalized.

Explanation:

You didn't give any statements to choose from, so I'll give you a rule of thumb. When finding a scientific statement, make sure it's something like "The tide is higher at noon than it was at 3 am." and not "Your dog is itchy, so that means a bad storm will arrive."

At what coordinates is approximately california​

Answers

Answer:

36.7783° N, 119.4179° W

Explanation:

Which process that causes changes in Earth's orbit was found to coincide with 100,000-year glacial cycles? Answer Options: A. Axial precession B. Precession of the ecliptic C. Apsidal precession D. Obliquity

Answers

Answer:

Apsidal precession

Explanation:

Apsidal precession is the process that causes changes in Earth's orbit and was found to coincide with 100,000-year glacial cycles. Thus, the correct option is C.

What is the Glacial cycle?

The glacial cycle may be defined as a significant global climatic oscillation of the order with a specific rate that is developed by the ice age.

Apsidal precession is the precession of the line that links the apsides of an astronomical body. The regular cycle of apsidal precession takes about 100,000-year.

Therefore, the correct option for this question is C.

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What is the largest source of waste generation?

A. Individuals and industry
B. Individuals and agriculture
C. Developing countries
D. Industry and agriculture

Answers

Answer:        B. Individuals and agriculture

Explanation:

The answer is C, developing countries. In many developing countries they have no waste management so they throw it in the streets

The location where sea floor spreading occurs is called the

Answers

Answer:

The location where sea floor spreading occurs is called the mid ocean rigid.

Explanation:

Hope it helps you....

Thank you..☺..

Which latitude lines does photoperiodism have the greatest effect? Why?

Answers

Answer: A short-day plant will not flower if light is turned on for a few minutes in the middle of the night and a long-day plant can flower if exposed to more red-light in the middle of the night. Cryptochromes are another type of photoreceptor that is important in photoperiodism. Cryptochromes absorb blue light and UV-A.

Explanation:

Which observation led Mendel to the idea that traits were controlled by more than a single factor? Crossing two purple-flowered pea plants always resulted in a purple-flowered pea plant. Crossing two white-flowered pea plants always resulted in a white-flowered pea plant. A trait that was not seen in the first generation may later reappear in the second generation. A trait that was not seen in the first generation was completely gone and never reappeared.

Answers

Answer:

The answer is option C.

Explanation:

Genetic traits are expressed by dominant and recessive genes, which show up in the phenotype according to their presence on the chromosomes.

Observing a trait that was not present in the previous generations suggests that this trait is recessive and did not have the chance to appear in the other generations before. This idea has led Mendel to the idea that traits were not controlled by only a single factor. So the answer is C.

I hope this answer helps.

Answer:

A trait that was not seen in the first generation may later reappear in the second generation.

Explanation:

Explain why fermentation stops after
a certain time in making
making bread?

Answers

Answer:

The yeast die at 140° F

Explanation:

The fermentation process is caused by the living organisms called yeast feeding on the sugar in the dough. As the yeast feed on the sugar they release CO² which causes the bread to rise but once the bread in the oven reaches 140° all the yeast are killed off and the fermentation process stops.

The process of fermentation stops after a certain time in making bread because the organism which carries this process has been killed.

What do you mean by Fermentation?

Fermentation may be defined as a process a chemical process by which molecules such as glucose are broken down anaerobically in the presence of yeast.

During fermentation, the yeast produces excess carbon dioxide due to which the dough of bread swells. But after the completion of fermentation when bread places in the oven or any other warmer temperature, it killed the yeast, and hence fermentation stops.

Therefore, the process of fermentation stops after a certain time in making bread because the organism which carries this process has been killed.

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Help I don’t understand

Answers

Answer:

i don't understand sorry

Answer:

I think your supposed to write what happens in each box for the outcome of each situation like what happens in the filtration in Miguels blood test.

Explanation:

Your forest has three domains: certguide and its two children domains west.certguide and east.certguide. The west domain runs at domain functional level 2012 R2. The east domain runs at domain functional level 2008. You have been tasked with bringing the entire forest to forest functional level 2016. How would you approach raising the east.certguide domain

Answers

Answer: It's worth noting that, the recommended upgrade path is to demote existing servers and promote new servers whenever you can. If that is not possible in your environment, you can run in-place upgrades from Server 2012 R2 to Server 2016.

16. Which one of the following statements best describes group behavior?

A. Group behavior depends solely on its most influential individual members.
B. Group behavior is a thing apart from the behavior of any individual in the group.
C. A group is the sum of the behavior of all of the group members.
D. As a group behaves, so too will each individual in the group.

Answers

Answer:

C. A group is the sum of the behavior of all of the group members.

Explanation:

The statement which best describes group behavior is: C. A group is the sum of the behavior of all of the group members.

A group is also referred to as a team and it can be defined as a group of people or set of individuals having various skill set, knowledge, ideas and experience, who come together to work on a project or task, in order to successfully achieve a set goal and objective.

Therefore, individuals working as a group usually interact with the other group members and as a result, this enhances performance and strengthen the level of relationship they share.

In conclusion, a group is the overall sum of the behavior of all of the members in a particular group.

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Does genes contain sextual attractions over humans?

Answers

Answer:

Yes, genes are based on your look likes / features for example hair, eyes, other parts of the body and people are more connected to them for the circumstances of attractions

Hope this helps :)

Explanation:

about plant kingdom​

Answers

What’s the question?

A person is dehydration and they start to bleed from their nose. But they're bleeding from only one nostril. Why?

Answers

Dryness of the nasal mucosa.
A dry nasal mucosa causes itching and people often scratch inside the nose due to this. It damages the delicate inner lining over the nostrils. Even if one does not scratch, the capillaries present there can rupture and bleed spontaneously due to excess dryness. This happens because the nasal mucosa is very thin and fragile. In conclusion, bleeding from one nostril is caused by too much Dry air — when your nasal membranes dry out, they're more susceptible to bleeding and infections.

The lining of your nose contains many tiny blood vessels that lie close to the surface and are easily damaged.

The two most common causes of nosebleeds are:

Dry air — when your nasal membranes dry out, they're more susceptible to bleeding and infections

Nose picking

The incidence of phenylketonuria (PKU), an autosomal recessive genetic disorder, is approximately 1 in 4,500 in Ireland. Assuming Hardy-Weinberg equilibrium, what is the probability that an Irish female, who is phenotypically normal with no family history of PKU, and an Irish male, who like his parents does not have PKU, but does have a sister with PKU, will have a child with PKU?

Answers

Answer: Probability: 0%

Explanation:

Hardy-Weinberg establishes that the genetic composition of a population remains in equilibrium as long as no natural selection or other factors act and no mutations occur. This means that the children of this couple will inherit the genes of the parents.

The woman is phenotypically normal with no family history of PKU, this mean that probably there are no affected (recessive) alleles in her family. In an autosomal recessive disorder, both copies of the gene in each cell are recessive. Therefore, her genotype will be AA with A being the dominant and normal allele. As for the Irish man, his sister does have PKU, which means her genotype is aa. So, she must have received a defective allele from each parent. Then the parents' genotypes are both Aa (heterozygous, only one allele affected as they are healthy). So, we know that the Irish man does not have the disease (he can't be aa), but he could be Aa (having inherited a normal allele from one parent, and an affected one from the other parent) or AA (having inherited both normal alleles from each parent).

Then we have two possible punnetts square to do: AA (the Irish woman) and AA (he Irish man); or AA (woman) and Aa (man).

In the attached figure both punnetts squares are shown. The first punnett square (AA x AA) shows that 100% of the offspring will be AA (this means, the phenotypic ratio is also 100% not affected and non-carrier). The second punnett square (AA x Aa) shows that 50% will be AA (healthy and non-carrier) and 50% will be Aa (heterozygous, healthy and carrier) But since it is an autosomal recessive disease, a single affected allele is not enough to develop the disease. So in neither case is there a chance of having a child with PKU.

Technology has affected society by causing radical changes in how people live. For example, e-mail on the computer has changed the way we communicate with the world. Describe another example of how technology has changed how people live

Answers

Answer: the modern production of the cars change the way of transportation

Modern houses change the way where people locate

Another example of how technology has changed how people live is the widespread use of smartphones and mobile applications.

Smartphones have become an integral part of daily life for many people, revolutionizing the way we communicate, access information, and carry out various tasks.

Some ways in which smartphones and mobile applications have transformed our lives:

1. Communication: Smartphones have made communication more convenient and accessible. With features like instant messaging, video calls, and social media apps, people can easily connect with others regardless of their location.

2. Information Access: Smartphones provide instant access to a vast amount of information through the internet. With a few taps on a smartphone screen, people can search for news, look up facts, find directions, or access educational resources.

3. Online Shopping: E-commerce platforms and mobile shopping apps have revolutionized the way people shop. With smartphones, individuals can browse and purchase products or services from anywhere, anytime.

These are just a few examples of how smartphones and mobile applications have significantly changed the way we live.

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Why is digestion of fats difficult as compared to that of other nutrients?

Answers

This is because fats are insoluble in water and therefore are more difficult to digest than any other nutrients. They also present as large globules.

Hope that helped!!! k

Answer:

Fats take longer time to digest than carbohydrates. Fats can't be digested easily as its insoluble in water and are presented as large globules. The bile juice that gets secreted breaks down the fat from bigger droplets into smaller ones.

Explain Fo- F1 pump in mitochondria?
Please
I will mark you the brainlest ​

Answers

mitrochondrial Proton FOF1 ATPase / ATP synthase synthesis ATB during oxidative phosphorylation. In this study, we examined of effects of several groups of polyphenolic photochemicals on the activity of the enzyme

Answer:

ATP sinus is enzyme that creates the energy storage molecules adenosine triphosphate ADP and inorganic phosphate the overall reaction catalysed by ATP synthesis is

ADP+Pi+3H+out =ATP+H2O+3H+in

Please choose the answer that best fills in the blanks of this statement in the correct order. Photosynthesis proceeds in two phases: the light-_______ reactions which proceed only in the presence of sunlight, and the light-________ reactions which proceed regardless of the lighting conditions.

Answers

Answer:

first blank dependent

second blank independent

Explanation:

Light Dependent reactions depend on light and right independent reactions don't

what are the functions of protein

Answers

Answer:

Explanation:

7 Important Functions of Protein in Your Body

 

   Causes Biochemical Reactions. ...

   Acts as a Messenger. ...

   Provides Structure. ...

   Maintains Proper pH. ...

   Balances Fluids. ...

   Bolsters Immune Health. ...

   Transports and Stores Nutrients.

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I REALLY NEED HELP PLEASE HELP ME :( * Graph these numbers on a number line.-5,3, -2,1-5 Calculate JK if LJ = 14, JM = 48, and LM = 50 (x+3)(x-5)=(x+3)(x5)= Name brand drugs are able to continue capitalizing on their market power even after generic drugs enter the market because (i) almost all people fear the generic drug companies are devoting too few resources to research and development. (ii) some people fear that generic drugs are inferior. (iii) some people are loyal to the name brand. Group of answer choices Which property of equality was used to solve this equation? x 5 = -14 x 5 + 5 = -14 + 5 x = -9 A. addition property of equality B. subtraction property of equality C. multiplication property of equality D. division property of equality Need Help Please Show Work Which governing principles are identified in the Constitution? Many gluten-free food options are found on the store shelves in the United States, but they are scarcely available in international markets. Given the increasing awareness of a healthy lifestyle, such products satisfy an unmet need. Therefore, a product such as gluten-free food in international markets:_________. Dennis throws a volleyball up in the air. It reaches its maximum height 1.1\, \text s1.1s1, point, 1, start text, s, end text later. We can ignore air resistance. What was the volleyball's velocity at the moment it was tossed into the air? Water pressurized to 3.5 x 105 Pa is flowing at 5.0 m/s in a horizontal pipe which contracts to 1/3 its former area. What are the pressure and velocity of the water after the contraction A saturated sodium carbonate solution at 0C contains 7.1 g of dissolved sodium carbonate per 100. mL of solution. The solubility product constant for sodium carbonate at this temperature is [tex]4x - 2x = [/tex] Nina has the flu and a high fever. Her immune system is exhibiting the A cube has an edge of 2 feet. The edge is increasing at the rate of 5 feet per minute. Express the volume of the cube as a function of m, the number of minutes elapsed. drawing is hard sentence or fragment (10 PTS) How do I solve for this? Please show work Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers. Factor completely and then place the factors in the proper location on the grid. x 2 + 13x + 36 A normal distribution has a mean of 30 and a variance of 5.Find N such that the probability that the mean of N observations exceeds 30.5 is 1%. What are the dimensions of the matrix?