Calculate the number of moles in 15.8 g of Fe.
Express the number of moles to three significant figures.

Answers

Answer 1

Answer:

им putins брат, почему вы обманываете нашу систему образования, Это теперь запрещено в России.


Related Questions

Neanderthals differed from modern humans in: A. long (front-to-back), vertically low skull shape B. having smaller brain size than modern humans C. Having smaller incisor teeth than modern humans D. Creating less complicated stone tools than modern humans

Answers

Answer:

A. long (front-to-back), vertically low skull shape

Explanation:

The Neanderthals had a different body structure than doe the present modern humans have. The had a more robust well-built structure and had a distinctive morphological feature.  Research suggests they were stronger than modern man thought they were slightly shorter than modern humans. They had a noticeable face, a chin, and a forehead slope.

• Write the biofuel and biogas chemical formulas. Explain why biofuel and biogas are still considered energy-dense molecules. Compare the chemical makeup of each component to carbon dioxide, which is produced when glucose is completely oxidised.

Answers

Answer:

diesel fuel is C12H23 whereas Methane is CH4.

Explanation:

The chemical formula for common diesel fuel is C12H23 while o the other hand, the formal of biogas such as Methane which is CH4. Both are organic compounds due to the presence of hydrogen and carbon. Biofuel and biogas are still considered energy-dense molecules because they have more mass and produced large amount of energy from it. The main difference between Carbondioxide gas and biofuel is that there is no hydrogen present in the formula of carbondioxide gas.

Which of the following best describes what scientists consider when they study ecology? A. the interactions of organisms with their environment B. the interactions of organisms with weather and climate C. the interactions of organisms to reproduce and produce offspring D. the interactions of organisms with one another and the environment​

Answers

Answer: A

Explanation:

I’m smart duhh

Answer: A

Explanation: It is resonable

What is the mechanism by which binding of testosterone to the testosterone receptor leads to upregulated gene transcription

Answers

Answer:

This binding causes a conformational change in the receptor which enters into the nucleus and binds DNA to activate transcription

Explanation:

Testosterone is a steroid hormone responsible for inducing protein synthesis and growth of tissues with androgen receptors. Testosterone receptors, also known as androgen receptors, are a class of nuclear receptors activated by binding androgenic hormones (e.g. testosterone) in the cytoplasm, whose binding induces a conformational change of the receptors that are subsequently translocated to the nucleus. Within the cell nucleus, these activated receptors form homodimers that bind DNA in order to promote the transcription of target genes capable of regulating cell growth, cell cycle progression and survival.

Question 12 of 15
A force is a push or pull.

Answers

Answer:

True

Explanation:

A force is a push or pull against something or someone

According to my research it’s true

You wouldn't be able to shower without this element!

Answers

Answer:

h²o or water

Explanation:

it says I need to have 25 or more characters so this is just my fill in

Which DNA sequence is complementary to the sequence: 5'-T A C G C A C C A A T A A C C A T A A T T -3'

Answers

Answer:

A T G C G T G G T T A T T G G T A T T A A

Explanation:

ANSWER FOR BRAINLIEST

A company recently tested the effectiveness of three new insecticides. The company wanted to determine which insecticide they should use to kill multiple pest species of ants. The data table below shows the results from the company's experiment.


Insecticide Fire Ants Killed Sugar Ants Killed Carpenter Ants Killed

X 74% 94% 62%

Y 32% 12% 18%

Z 45% 67% 31%


Based on the results of the experiment, the company concluded that insecticide X would be the best one to use. Upon which of the following lines of evidence did the company base its conclusion?

A.

Insecticide X was more effective against sugar ants than against carpenter ants or fire ants.


B.

Insecticide X killed a greater percentage of two out of the three species than did insecticides Y and Z.


C.

Insecticide X killed a greater percentage of all three species than did insecticides Y and Z.


D.

Insecticide X was more effective against carpenter ants than against sugar ants or fire ants.

Answers

Answer:

C.

Explanation:

i just did this question 5 minutes ago.

A company recently tested the effectiveness of three new insecticides, and based on the results of the experiment, the company concluded that insecticide X would be the best one to use because it killed a greater percentage of all three species than did insecticides Y and Z, which are in option C.

What is the insecticide?

The insecticide is given for the destruction or killing of the insects, and the intensity of the insecticides varies depending on the insects and their poison. There are three insecticides: X, Y, and Z, and X kills a higher percentage of all ants than the other two, so it is preferred.

Hence, A company recently tested the effectiveness of three new insecticides, and based on the results of the experiment, the company concluded that insecticide X would be the best one to use because it killed a greater percentage of all three species than did insecticides Y and Z, which are in option C.

Learn more about the insecticide here.

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Light penetrates the clear water of the open ocean more deeply than it does lake
water. Phytoplankton is found deeper in the open ocean than in freshwater lakes.
What does this observation best indicate?
A Phytoplankton provides nutrients to consumers in the ecosystem.
B Phytoplankton reduces the light available to organisms at lower depths.
C Phytoplankton populations are limited by their ability to photosynthesize.
D Phytoplankton population growth is limited by the presence of marine salts.

Answers

The answer is A: phytoplankton provides nutrients to consumers in the ecosystem.

Hope this helps:)

The given observation best indicates that the phytoplankton provides nutrients to consumers in the ecosystem.

What do you mean by Ecosystem?

An ecosystem may be defined as a place or an area where organisms of different species are present together and interact with one another for their need.

Phytoplanktons belong to lower trophic levels in the aquatic ecosystem. The organisms of higher trophic levels depend on it for the need of energy.

Therefore, the given observation best indicates that the phytoplankton provides nutrients to consumers in the ecosystem.

To learn more about the Ecosystem, refer to the link;

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How does natural selections take care of negative point mutations

Answers

Answer:

As mutations occur, natural selection decides which mutations will live on and which ones will die out. ... If the mutation is beneficial, the mutated organism survives to reproduce, and the mutation gets passed on to its offspring.

Explanation:

I hope it's help u

Oxygen is also called a life supporting gas?why​

Answers

Because we would die without oxygen

Explanation:

Oxygen is also called a life supporting gas because oxygen is required in the process of cellular respiration.

Where does most ocean pollution come from

Answers

Answer:

most ocean pollution comes from plastic waste and garbage flood

Answer:

Ocean pollution is caused by the introduction of toxic materials and harmful pollutants such as agricultural and industrial waste, chemicals, oil spills, and plastic litter into the ocean waters.

1. A brown mink crossed with a silver-blue mink produced all brown offspring. When these F1 were crossed among themselves, they produced forty-seven brown animals and fifteen silver-blue animals. What are the genotypes of the parentals and the F1s

Answers

Answer:

The correct answer is -

Parental - BB and bb

F1

Genotypes: 100% Bb  

F2

Genotypes: ¼ BB, ½ Bb, ¼ bb

Explanation:

It is given that a cross between a brown and a silver-blue mink produces all brown offspring and it is only possible if brown is dominant over silver blue in true breed cross, assume brown trait is represented by B and silver-blue is b then parents will be

BB and bb

   B    B

b  Bb   Bb

b  Bb   Bb

Cross between F1 individuals: Bb cross Bb

gametes : B, b and B, b

   B     b

B  BB   Bb

b   Bb    bb

the genotype of F2 : 1:2:1 = ¼ BB, ½ Bb, ¼ bb

Los peroxisomas tienen por función

Answers

Los peroxisomas juegan un papel clave en la oxidación de biomoléculas específicas. También contribuyen a la biosíntesis de lípidos de membrana conocidos como plasmalógenos. En las células vegetales, los peroxisomas llevan a cabo funciones adicionales, incluido el reciclaje de carbono del fosfoglicolato durante la fotorrespiración.

Which of the following is the most susceptible to damage by pollution in the air and
precipitation

A. The roots of trees
B. Trees at high elevations
C. Birds that migrate seasonally
D. Plants that grow in lakes or rivers

Answers

Answer:

B) Trees at high elevations

Explanation:

The atmospheric conditions and precipitation toxicity is most likely to affect trees at high elevations more so than the other answers.

The tree leaves, which are the main key to the tree's photosynthesis, absorb the oxygen and Co2 from the air, which are converted into nutrients. Without proper nutrients, the trees may die out.

Scientists have discovered a new marine bacterial species called Vibrio nuigii. They have isolated ten strains of this bacterium and determined their whole genome sequences. Only one of the strains (which the scientists named Vir1) is virulent and causes disease in oysters. Describe three ways in which the scientists could use their knowledge of the bacterial genome sequences to identify the genes responsible for virulence.

Answers

Answer:

1-by transfecting small interfering RNAs against target genes of interest

2-by using comparative genomics strategies in order to infer functional relationships among target genes of interest and homologous genes responsible for virulence in other bacteria (e.g., antibiotic resistance genes)

3- by inducing mutations through site-directed mutagenesis in order to study gene function (i.e., by examining the effects of knockout mutations)

Explanation:

Whole-genome sequencing (WGS), also known as complete genome sequencing, refers to Next Generation Sequencing technologies that allow the obtention of the entire genetic sequence of an organism/cell, which can be used as a reference genome to understand gene function, evolutionary relationships, etc. The information provided by WGS technologies allows making many different types of genetic analyses in order to understand gene function. First, the nucleotide reference sequence can be used to design complementary small interfering RNAs that trigger degradation of target messenger RNAs (mRNAs) by the RNA interference (RNAi) pathway, thereby inhibiting gene function (in this case, inhibiting genes associated with virulence in the bacterial strain). Second, a reference genome is required to perform bioinformatic data analyses in order to identify homologous genes associated with virulence in evolutionarily related bacteria, allowing identify, for example, antibiotic resistance genes or sequence polymorphisms (e.g., single nucleotide polymorphisms, SNPs) associated with gene function. Third, the information provided by a reference genome can also be used to trigger site-directed mutagenesis (for example, by using the highly precise CRISPR-Cas9 genome editing technology) in order to knock out specific genes of interest and thus analyze if the bacterial strain is still infectious.

Which paint should be used on the absorber plate if it is designed to absorb the greatest possible amount of insolation? *

Answers

Black ...................

BEST ANSWER GETS BRAINLIEST!!!!!!!!

Each trait a person has, such as eye or hair color, is ultimately the result of a single allele in DNA.

True
False

Answers

Answer:fałsz

Explanation:

Answer:

False

Explanation:

I just took the test

Only a very few flowering plants have been able to invade the oceans. But the few marine ones are very successful. What are some reasons for the small number of marine flowering plants

Answers

Answer:

1. High osmotic pressure due to the hypersaline nature of marine habitats

2. The dependence of flowering plants on pollinating insects for fertilization. These insect pollinators are however, absent in the marine environment.

3. Competition from already-established sea weeds and grasses provides another challenge to flowering plants invadingnthe oceans.

4. Constant changes in the environment as well as temperature changes too

Explanation:

The marine environment is a hypersaline environment with a high salt concentration relative to that of the plant cell. Due to high salt concentration of the marine environment, their is high osmotic pressure on living oragnisms found therein. Organisms must have well-adapted osmo-regulatory mechanisms to counteract the high osmotic pressure of their environment. Therefore, flowering plants face the challenge of removing excess salt from their cells or else lose water to their environment, hence resulting in the death of the plant. However, most flowering plants lack this ability and thus, have found it difficult to invade the oceans.

Flowering plants depends on insect-pollinators for fertilization. However, these insect are not found in the oceans, and as such, it is difficult for flowering plants to invade the oceans.

Well-adapted seaweeds and grasses serve as competitors for any invading flowering plant. Since the flowering plants are not yet adapted for life in marine habitats, they lose out in this competition.

The oceans are constantly in a state of frequent turbulence and change due to tides and currents. Also, the temperature of the oceans are very low and fluctuations in the temperatures of the ocean do occur, utimately serving as obstacles to invading flowering plants to adapt to life in the oceans and seas.

Newton's third law of motion is also known as
______/reaction.

Answers

The law of action and reaction
The third law of motion is Action and reaction

he conversion process where nitrogen gas combines with hydrogen to form ammonium ions, which is accomplished through the intense energy of lightening, or when air in the top layer of soil comes into contact with certain bacteria, is known as

Answers

Answer: The conversation process where nitrogen gas combines with hydrogen to form ammonium ions is known as THE ACTION OF THUNDERSTORMS while when air in the top layer of soil comes into contact with certain bacteria, nitrogen in the air is converted by NITROGEN- FIXING MICROORGANISMS.

Explanation:

About 79% of air is composed of gaseous nitrogen. However, only a few microorganism can make use of this nitrogen. The important sources of nitrogen for plants and most living organisms are the inorganic nitrogenous compounds in soil. In nature, nitrogen is constantly being removed from the soil and returned to it through the NITROGEN CYCLE

Conversation of gaseous Nitrogen into nitrogenous substances such as ammonium and amino-compouds are carried out by:

--> The action of thunderstorms, and

--> NITROGEN- fixing microorganisms.

During thunderstorms, Nitrogen reacts with oxygen to form nitric oxide. The nitric oxide is oxidizes to Nitrogen peroxide which dissolves in rainwater to form nitric and nitrous acid. When these acids enter the soil, they combine with mineral salts to form nitrates. The nitrates then, dissolve in soil water and are absorbed by the plants. These nitrates are converted into plant proteins and become part of the plant body.

Some microorganisms such as the Nitrogen fixing microorganisms are able to absorb nitrogen from the atmosphere and change it into amino-compouds and proteins. Examples of such microorganisms include:

--> the free living bacteria: these include the azotobacter and clostridium

--> the symbiotic bacteria: the rhizobium which is found in the root nodules of leguminous plants

FORENSIC SCIENCE !! BEST ANSWER GETS BRAINLOEST!!!!!!!
A ransom note is left at the scene of a kidnapping. Investigators ask a forensic linguist to look at it. What possible information might the linguist be looking for on the note?

Phrases that are used only in one area of the country
The chemical makeup of the ink used
The color of the ink that was used and where it came from
How much money the suspect is asking for

Answers

Answer:

The color of the ink that was used and where it came from

Explanation:

i took the test and im like 87% sure this is right

how scientists are able to determine climate information by just looking at tree rings? (how does it work?)

Answers

Explanation:

Because trees are sensitive to local climate conditions, such as rain and temperature, they give scientists some information about that area's local climate in the past. For example, tree rings usually grow wider in warm, wet years and they are thinner in years when it is cold and dry.

Answer:

Explanation:

Climate scientists compare the tree growth records to local weather records. For locations where a good statistical match exists between tree growth and temperature or precipitation during the period of overlap, the ring widths can be used to estimate past temperature or precipitation over the lifetime of the tree.

In mutualism, both organisms participating benefit from the relationship.
True or False?

Answers

Answer:

true

Explanation:

An organisms phenotype is

A. Its parents genes

B. Its genetic make up

C. lts physical appearance

D. Its heterozygosity​

Answers

Answer:

Explanation:

It's physical appearance

C the answer would be c


Which of the following kinds of cells perform basic functions such as obtaining energy from food?

Plant cells, but not animal cells
Animal cells, but not plant cells
Both plant cells and animal cells

Neither animal cells nor plant cells

Answers

Answer:

Both plant and animal cells

Explanation:

Answer:both plant cells and animal cells

Explanation:generally, cells obtain energy from food during cellular respiration where glycolysis takes place

The diagram shows the human alimentary canal. In which parts does peristalsis take place?​ plss be sure abt it

Answers

Answer:

i think answer is 3 and 4

Explanation:

peristalsis is located at esophagus and in our digestive system

The parts where peristalsis will take place are ; ( C )  parts 3 and 4

Peristalsis is a series of muscle contraction occurring in the digestive system of Humans also these series of muscle contraction can be seen in tubes connecting the human kidney and bladder as well.  

From the diagram parts 3 ( esophagus )and 4 ( intestines ) are part of the human digestive system and peristalsis is very evident in these regions in the human body.

Hence we can conclude that The parts where peristalsis will take place are  3 and 4

Learn more : https://brainly.com/question/19838720

Envy plant yellow seed color is dominant in greeting color is recessive what will the generations look like assume that Mandel's method of Crossing reading parents with opposite traits is followed check all that apply​

Answers

Options please! Otherwise how are we supposed to help you, sorry.

_______ are large geographical areas that have similar climate and weather patterns.

a.Symbioses
b. Zones of tolerance
c. Biomes
d. Communitie

Answers

Answer:

i think its c.............

Answer:

The answer is C. Biomes

Explanation:

Large areas with similar climate and weather are called biomes.

Certain characteristics allow animals to survive in one environment but not in another.
Which two statements support the claim that an Arctic wolf can NOT survive in the desert? A. It has two thick layers of fur. B. It has a thick layer of body fat. C. It hunts over a large area of land. D. It has large eyes to see better at night. E. It has light-colored fur to reflect sunlight.​

Answers

Answer:

A and either B or C

Explanation:

check my reasoning cause i'm not 100% percent sure most likely the wolf would die from heat due to the layers of fur and body fat. also c and d have nothing to do with the wolf not being able to survive, in fact c is beneficial

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Can someone help its math :) hup meh please........ Preventing Infection is the most important thing to do when someone is excessively bleeding________true or false Why did poems originally have to rhyme?A. They were short and snappyB. It made them more interestingC. They were memorized and recitedD. It provided a challenge Do you believe the USA PATRIOT Act violates the civil liberties ofAmericans and Explain homophopiaDefine any terms. meaning of black out Cuando un vehculo tiene un pinchazo, el conductor pone una rueda de repuesto y una gata en la carretera para advertir o informar a los otros conductores. a. s b. no The bar graph shows the number ofmembers of the Athletic Booster Clubduring various years.In which year was the membership 40% greater than it was in 2012? (44=6x-1+9x,-5)I dont know how to answer this I just know its ( , -5) Find the area of the figure below.15 m12 m18 ma. 431.59 m2b. 395.59 mO c. 1,042.37 m Question 14(1 point) The chemical in marijuana that causes the high is______. If you had read the book Hatchet, than please helpWhich kind of conflict is demonstrated by the plane crash?A=conflict with oneselfB=conflict with another personC=conflict with natureD=conflict with fate or god The function f(x) = { x + is used to complete this table. Which statements are true of the given function? (-1,1) (0,3/2) (1,2) (2,5/2) 5. The space around a magnet in which there is a magnetic effect is calledA. an electromagnetB. a magnetic poleC. lodestoneD. a magnetic field When and where did Christianity begin? STEP 2: Now that you have answered the questions, lets organize your information. Take your answers and fill in the T-chart. You need to determine whether the information can be categorized as a political, economic or social aspect of Reconstruction. RECONSTRUCTION WebQuest TChart: After completing Step 1, sort your notes into the following three categories. Bullet points are encouraged! This is a 10 point assignment. Three will be awarded for each complete column and one will be reserved for quality of overall submission. which point is the vertex of the angle below In an influential 1947 article, diplomat George F. Kennan advocated that the US should:a. Invade the Soviet Union to establish a democracy b. Adopt a more conciliatory policy toward the Soviet Union c. Conduct covert activities in underdeveloped countries to undermine communist governments d. Focus its foreign policy on containing the spread of Soviet communism A 9 kg box is placed on a 6 m tall shelf. What will be the kinetic energy of the box right before it hits the ground? (use g = 10 m/s/s)