Why is ∆Hf0 62.4 kJ/mol for I2(g), but 0.0 kJ/mol for I2(s)?

Answers

Answer 1

Answer:

12(s) is in its standard state.

Explanation:


Related Questions

Explain the roles of reactants and products in a chemical reaction. Identify the
reactants and products for this reaction.

Answers

Answer:

reactants help in combing them selves to form products which are used in daily life

True or false Cherry blossom trees are gymnosperms

Answers

Answer:

i think it fulse

I am positive.

Which organism is labeled as the HERBIVORE?
a. pumpkin
b. mouse
c. snake
d. hawk

Answers

D the answer is hawk

LOT OF POINTS MARKING PEOPLE AS BRAINLIST

5. Describe logistic growth and exponential growth.

Answers

Answer:

Population Growth Form: The graphic pattern obtained when a population growth is plotted against time is called population growth form or model. There are two types namely: Exponential J-shaped and Logistic or S-shaped.

J-shaped or Exponential Growth Form: At any point of time, population size does not reach the equilibrium.

Explanation:

When resources are limited, populations exhibit logistic growth. In logistic growth, population expansion decreases as resources become scarce.

plant growth
Roots pry apart cracks in rocks
is it a chemical weathering or mechanical weathering​

Answers

Answer:

Mechanical Weathering.

Explanation:

Answer:

Mechanical weathering

Explanation:

burrowing in the ground breaks rocks

which statement best explains why people with cancer due to asbestos exposure do not pass the mutation on to their offspring

Answers

Answer :

I know this is late but the answer is the mutation occurred in somatic cells

Explanation :

I got it right on quizziz

Answer:

I thought it was D, but he seems to be right

Explanation:

A student is observing a cell under a compound microscope. The student has been asked
to list an evidence that can be used to determine if the cell belongs to kingdom Plantae or
kingdom Animalia. Which organelle could be used to determine the correct placement of
the cell?

A.ribosome
B.nucleus
C.mitochondria
D.cell wall

Answers

the answer is actually d. a cell wall. both plant and animal cells contain ribosomes, a nucleus, and mitochondria. but only plant cells contain a cell wall and animal cells do not.

A cell is the fundamental, structural, and functional unit of all living things. Plant cells do not have lysosomes or centrosomes, whereas animal cells do (or a pair of centrioles).

What is Plant cells?A plant cell is a eukaryotic cell with a true nucleus and organelles that perform specific functions. However, some organelles found in plant cells differ from those found in other eukaryotic cells. Organelles, cytoplasmic structures, cytosol, cell membrane (also known as plasma membrane), and cell wall are all components of a typical plant cell structure.Plastids, nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus are plant cell organelles. The plant cell is the fundamental unit of all plants. Plant and animal cells are both eukaryotic, which means they have a membrane-bound nucleus and organelles. The following is a summary of some of the most important characteristics of plant cells. See cell for a more in-depth explanation.

To learn more about Plant cell refer to:

https://brainly.com/question/913732

#SPJ2

what’s the answer for this question

Answers

Answer:

i cant really see it

Explanation:

Answer: it is metaphase because that means it's in the middle so it's B.

Common baboons live on the savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop. Which of these is a likely outcome of movement by young males?

Answers

Answer:

Dominance fights

Explanation:

Predict what would happen to the H+ ion concentration if you added sulfuric acid to water. Would the pH increase or decrease

Answers

You would add H+ ions if you added an acid. Thus lowering the pH.

When a sulfuric acid is dissolved in water, hydrogen ions are produced, increasing the concentration of hydrogen ions in the solution. Result in decrease in pH of solution.

What is PH solution?

Indicating the acidity or basicity of a solution, the pH of a solution measures the molar concentration of hydrogen ions in the solution.

The acronym pH stands for “power of hydrogen,” and the pH value in numbers is simply the negative of the molar concentration of H+ ions divided by 10.

A solution's acidity can be determined by looking at its pH, which is a measurement of hydrogen ion concentration.

Pure water slightly separates into ions with roughly equal amounts of hydrogen and hydroxyl (OH) ions.

Nutrient availability, biological processes, microbial activity, and chemical behavior can all be influenced by pH.

Therefore,  if you added sulfuric acid to water, pH decrease.

Learn more about pH here.

https://brainly.com/question/2288405

#SPJ2

The fossil record indicates that the earliest hominids most likely originated on which continent? Africa Asia North America Europe

Answers

Answer:

the answer is east africa

Explanation:

hope the answer helps

Any member of the biological family Hominidae is known as a hominid. These are considered as the great apes that have become extinct and are living.

What is the original source of hominids?

At present, there are chimpanzee, orangutans, humans, and gorillas. The hominids originated on the continent Africa, mainly in the Eastern parts of Africa. The hominids dispersed to other continents from Africa.

The correct order of the most densely populated continents is : Asia, Europe, Africa, North and South America and Australia. Africa has a population of 1.26 million and the population density of this continent is 87,15 people per square mile. Africa is experiencing the world's fastest growing population.

Asia is the most populated continent in the world with a population of 4,5 billion. The population density in Asia is 246,11 per square mile. Approximately 7,6 billion people live on earth on seven continents.

Therefore, Any member of the biological family Hominidae is known as a hominid. These are considered as the great apes that have become extinct and are living.

Learn more about Asia on:

https://brainly.com/question/15432079

#SPJ6

According to the scientific theory of atoms, which of the following statements best describes the location of electrons? A. in the nucleus of the atom B. both in the nucleus and around it C. outside the nucleus and often far from it, in the electron cloud D. outside the nucleus, yet very near it because they are attracted to the proton

Answers

Answer:

D. Outside the nucleus, yet very near it because they are attracted to the proton

Explanation:

Electrons are located outside of the nucleus of the atom, which is made up of neutrons and protons. In physics, the space they take up is informally referred to as the electron cloud. Protons and electrons are attracted to each other, because the positive electric charge of the protons is attracted to the negative charge of the electrons. This is why the electrons are very close to the nucleus.

The best statement that describes the location of electrons is D whichis Outside the nucleus, yet very near it because they are attracted to the proton.

What is electron?

An electron is a negatively charged subatomic particle. It can be either free , or bound to the nucleus of an atom.

Electrons in atoms exist in spherical shells of various radii, representing energy levels. The larger the spherical shell, the higher the energy contained in the electron.

Thus, option "D" is correct.

To learn more about electron click here:

https://brainly.com/question/1255220

someone please help!!!

Answers

Answer: phospholipid

Explanation:

maybe 1,3

but i say 1

............ Are used to build sugar? ​

Answers

The common 'sugar' (sucrose) used is made up from glucose and fructose and is extracted from sugar cane or sugar beet. Sugar cane is grown in tropical and sub-tropical parts of the world, including South Africa, Brazil, India, Mauritius and the West Indies.

Why do you think there are rarely 5 or 6 links in a food chain? To help, think about how much food it took for all of your energy needs in your life. Imagine if an animal had to eat 10 humans a year to survive.... is this feasible... or there that much energy available?

Answers

Answer:

Most food chains have no more than four or five links. There cannot be too many links in a single food chain because the animals at the end of the chain would not get enough food and energy to stay alive.

Explanation:

pls help i’ll give brainliest, i have an exam and i didn’t know and i didn’t study.

“what is the main function of carbohydrates”

A. they contain the genetic information of living organisms
B. they build structures like cell walls and membranes
C. they are the main source of energy for living organisms

Answers

Answer:

c

Explanation:

The main function of carbohydrates is to provide the body and brain with energy.

PLEASE HELP ASAP BRAINLIEST IF CORRECT

Hypersaline environments have a high concentration of what?
Salt
Nitrogen
Acidity
Oxygen

Answers

Salt, saline is salt

what is the answer of √12¼​

Answers

Answer:

1.73 i think it will be answer

Electrons have a blank
charge?

Answers

Answer:

Electrons have a negative charge.

a positive charge ,,,,,,,,,


A substance that influences the reaction but does not participate in the reaction is a


Answers

Answer:

Explanation:

Catalyst is a substance that influences the reaction but does not participate in the reaction

Answer:

Catalyst is a substance that influences the rate of reaction without being consumed in the reaction.

-They increase the rate of reaction by decreasing the activation energy of the reaction.

-As they are not used up in the reaction they are required in a small quantity.

-In biological system, enzymes are referred to as biological catalyst or biocatalyst. They are generally protein in nature and are very specific for their substrate. They also increases the rate of biological reaction by forming enzyme-substrate complex.

-Few examples of catalyst are: potassium permagnet, platinum, enzyme (like hexokinase, hydrolase etc) etc.

Explanation:

I did use someone else's answer from an older post.

SOO.. I forgot the nametag.

What’s the difference between a silent mutation and an expressed mutation?

Answers


Silent mutations are mutations in DNA that do not have an observable effect on the organism's phenotype. They are a specific type of neutral mutation. The phrase silent mutation is often used interchangeably with the phrase synonymous mutation; however, synonymous mutations are not always silent, nor vice versa! hope that helped :)
Silent mutation is a mutation in somethings dna

The plant hormone that allows the cells away from the
sunlight to elongate so the plant con bend toward the
light?

Answers

auxin, The substance responsible for cell elongation is auxin. This phytohormone is formed in cells at the tip of the shoot and is then passed from cell to cell.

Help plzzzz
How many molecules of oxygen are produced for every molecule of carbon dioxide that is consumed during photosynthesis

Answers

Answer:6

Explanation:

6 molecules of carbon dioxide are required, one for each carbon atom in glucose. 6 molecules of oxygen are produced as a by product of water oxidation. Sunlight provides the free energy needed to make the endergonic pathway proceed.

Soil is considered to be one of the greatest natural resources.


Please select the best answer from the choices provided

T
F

Answers

The answer would be True because soil is the main thing farmers and even people use to plant fruits and plants and it counted as the greatest natural resource without soil we would loose a lot of things

A pollutant that forms in the atmosphere by chemical reaction with primary air
pollutants, natural components in the air or both

A) Primary Pollutant
B) Smog
C) Air Pollution
D)Secondary Pollutant

Answers

The answer is (A) primary pollutants

A pollutant that forms in the atmosphere by chemical reaction with primary air pollutants, natural components in the air, or both is a primary pollutant. The correct option is A).

What are primary pollutants?

Airborne primary contaminants are introduced directly. They consist of heavy metals, volatile organic compounds (VOCs), particulates, nitrogen oxides, sulfur oxides, and carbon oxides.

Primary pollutants result in secondary pollutants. They consist of chemical evaporation, ground-level ozone, and photochemical smog.

A pollutant with a natural origin is one that was produced by elements found in nature, such as ozone produced by photochemistry, sea salt particles, volcanic dust, and fibers from trees, among others.

Therefore, the correct option is A) Primary Pollutant.

To learn more about primary pollutants, refer to the link:

https://brainly.com/question/23615409

#SPJ6

Organisms store chemical energy in different molecules. Which of the following statements is true?
a)Cells have a lot of ATP
b)Cells have a small amount of ATP
c)Cells have an unlimited amount of glucose
d)Cells can make more glucose by breaking down ATP

Answers

Answer:

D

Explanation:

What is a tornado? Describe in 5 sentences at least, in your own words.

Answers

Answer:

a tornado is a very destructive cloud that destroys things bring a lot of damage and harm to everybody where that tornado is located

Explanation:

Answer:

A tornado is a dangerous natural disaster. Tornados are formed by air from one side and the other by merging into eachother and they will start rotation like a cyclinder. the more the air is narrow and streached the faster it gets. these can go up to 300 mph. they can destruct any type of building, trees or vehicles miles away.

Explanation:

20 POINTS!! PLS HELP for Social Studies:

Out of all the different ancient lands you have learned about, discuss which one you would like to live in most!

Discuss these points on why:

Trade

Location

Land

Beliefs

Answers

Answer:

Associated with Mesopotamia are ancient cultures like the Sumerians, ... Learning about this time period can be a little confusing because these ... We believe Sumerian civilization first took form in southern Mesopotamia ... them to travel into the Persian Gulf and trade with other early civilizations,

Explanation:

Which of the following is not part of a chromosome?

Answers

Answer:

b See g Chromosome is just a threadlike structure of nucleic acids and protein  RNA is is the answer

Explanation:

B, I think! We are studying this right now so this is a least what I have learned so far!

in the reference to genetics what does dominance and recessive mean​

Answers

Answer: well see if a trait is dominant you are more likely to have said trait if a trait is recessive you are less  likely to have said trait

Explanation:

Answer:

dominance is the one that will be seen in a creature, recessive traits will not be seen, but can still be passed on

Explanation:

if both parents pass on the same recessive gene then their child will show that trait, such as two sets of parents, one dark skinned and one light skinned, their children will be dark skinned, but if their children have a child is has a chance of having light skin because they both carry that recessive trait.

Other Questions
check the correctness of P=2mE/t where the symbols have usual meaning. A bowl with 2 cups of flour in it weighs 405 grams. When it has 5 cups of flour in it, it weighs 765 grams. How much does the bowl weigh by itself? Select all the correct answers.Which rivers were part of the worlds oldest known civilization?TigrisNileEuphratesIndusYellow Given m||n find the value of x Who was the head of the British government, and therefore American government, in 1776? Re-read line 94-108. Is Kielburger's statement about the heart of a street child valid? Why? Please help I need help fast Jerry is deciding whether to share his apartment with three Hispanic students: Elena from Bolivia, Jorge from Spain, and Lola from Miami. Before he makes a decision, Jerry talks to his prospective roomates about their daily routines to see whether they might be a good fit. Complete the dialogue with the appropriate forms of each verb. OJO! Jorge (from Spain) uses the vosotros form.Jerry: Debemos hablar de cmo vamos a compartir el apartamento, no?Jorge: Pues, yo Enter Textenter answer (despertarse) a las 5:00 de la maana porque trabajo muy temprano. Enter Textenter answer (Baarse) enseguida (right away) y despus Enter Textenter answer (secarme) y Enter Textenter answer (ponerme) la ropa. Y vosotros? A qu hora Enter Textenter answer (levantarse)?Elena: Yo, aunque (although) Enter Textenter answer (dormirse) tarde, Enter Textenter answer (despertarse) a las 7:00 de la maana porque tengo clase a las 8:00. Y t, Lola, Enter Textenter answer (acostarse) tarde y Enter Textenter answer (despertarse) temprano tambin, no?Lola: S. Y Enter Textenter answer (ducharse), Enter Textenter answer (vestirse) y Enter Textenter answer (maquillarse) en el bao, as que paso mucho tiempo all en la maana.Elena: Ah, no te preocupes! A m me gusta Enter Textenter answer (pintarse) en mi cuarto. No paso mucho tiempo en el bao en la maana. Parece que todo est bien entonces, no?Jerry: Un momento, por favor. Yo tambin Enter Textenter answer (levantarse) temprano, a las 7:30. Necesito Enter Textenter answer (baarse) inmediatamente para Enter Textenter answer (despertarse). Despus Enter Textenter answer (cepillarse) los dientes, Enter Textenter answer (peinarse) y Enter Textenter answer (afeitarse). Finalmente, Enter Textenter answer (ponerse) la ropa y salgo del bao a las 8:30.Jorge: Este hombre Enter Textenter answer (cuidarse) bien, no? What is the coefficient of the x9y-term in the binomial expansion of (2y + 4x3)4? 20 points!Does Heat go with Thermal Energy ?Does Thermal Energy go with Temperature?Does Temperature go with Heat? An observation deck extends 200 feet out above a valley. The deck sits 150 feet above the valley floor. If an object is dropped from the observation deck, its height h in feet, after t seconds, is given by h6150. How long will it take for the object to be 6 feet above the valley floor? t will take seconds for the object to be 6 feet above the valley floor (Type an integer or a decimal.) Need help ASAP! Sorry for the low-ish quality OPEC controlspetroleum pricingoil tankers crossing the Strait of Hormuzheight and depth of oil rigsoil productionsupply of oil exports Which of the following selections best states a central idea of the Point essay?O A. Intelligence is entirely determined by the intelligence of one's parents.B. Intelligence is determined primarily by how much money one's family has, and secondarily by how many books are in one's house during formative years.O C. Intelligence is inherited in one's genetic makeup, and is only slightly affected by one's environment.D. Because intelligence is fixed at birth, it is dangerous to try to hold unintelligent people to a high standard, as it will discourage them. Take my points and answer 1 + 19,000 Can anyone help me with this Which of the following statements is true about the Core Population Theory?A. It is based on the concept of evolution.B. It maintains that the early inhabitants of the Philippines originated from South China and Taiwan.C. It stipulates that the early Filipinos evolved from indigenous inhabitants who lived in the islands a long time ago.D. It suggests the existence of a trade and communication network that first spread in the Asia-Pacific region during the Neolithic Age.Select all the correct answers. 39 divided by 780 help me Daytonians had been struggling along for years with an outmoded municipal electric system which had its current generated in the steam plant of a local sawmill. Already the city had been forced to pay for new equipment without having any part in its management. In 1934 the city was called upon to invest money for the patching up of this decrepit private plant, which was daily threatening to close down and leave the city without power.City commissioners talked the matter over. If the TVA is going to start giving people around here cheap electricity, they reasoned, "by gosh, Dayton is more entitled to it than anybody else." So at the request (one might almost say demand) of the commissioners, TVA worked out a system for local distribution. Though Daytons rates had been about the lowest of any municipal system in the section, the following table shows what this transfer meant to her in dollars and cents:Rates Before TVAFirst 20 kilowatt-hours. . . . . . . . . . . . . 8 cents eachNext 30 kilowatt-hours . . . . . . . . . . . . 7 cents eachNext 50 kilowatt-hours and over . . . . . 5 cents eachPresent TVA RatesFirst 40 kilowatt-hours. . . . . . . . . . . . . . 3 cents eachNext 150 kilowatt-hours . . . . . . . . . . . 2 cents eachNext 200 kilowatt-hours . . . . . . . . . . . . 1 cent eachNext 1,000 kilowatt-hours . . . . . . . . . . . . . . . 4 millsBriefly, TVA cut the average Daytonians electric bill by about two thirds. In the five years since the contract was made the number of power users in Dayton has increased from 637 to 923. And the total number of kilowatt-hours per consumer has almost doubled. Meanwhile the city of Dayton has made a net profit of $58,000, and now makes a monthly profit of almost $4,000.what is the effects of the Tennessee Valley Authority Act on the citizens and private power utility companies in the region. Mary is walking home from school without an umbrella when it suddenly begins to rain. Q: external conflict or internal conflict? Before the proposal for the writing on the Constitution, what dicision was made from the vote by the delegates after the first six weeks of the 1787 meeting?