Ezra

This page lists questions and answers that were posted by visitors named Ezra.

Questions

The following questions were asked by visitors named Ezra.

I am a 5th grade student and my group has to research this question. I have to turn it in tomorrow and was given the assignment today. I am stuck can you please help? Thanks The question is: Why do people make things that ruin the environment?

16 years ago

How many moles of ammonium ions are in 8.794g of ammonium carbonate? I got .1832 as an answer and I was told that I was very close and I just may have done some kind sigfig or calculation error but I have no idea what it is since I did this problem so man...

13 years ago

Calculate the number of grams of Fe formed when 0.300kg of Fe2O3 reacts. Equation: Fe2O3+CO-->Fe+CO2 converted .300kg to 300g Balanced Fe2O3+3CO-->2Fe+3CO2 So I started by trying this: 300gFe2O3(1molFe2O3/159.687gFe2O3)...and then I don't know where I wou...

13 years ago

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A solution containing 3.30 g of sodium carbonate is mixed with one containing 3.00 g of silver nitrate. How many grams of each of the f...

13 years ago

A particular coal contains 2.5% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The sulfur dioxide reacts with calcium oxide to form solid calcium sulfite. If the coal is burned in a power plant that uses 1800 to...

13 years ago

What is the zeff value for a valence electron in an oxygen atom? An explanation would be much appreciated.

12 years ago

I was wondering if someone could explain to me how two haploid mating types can form a diploid. Also could someone explain the haplodiplontic life cycle? I would very much appreciate it.

12 years ago

In the ground-state electron configuration of Fe^{3+}, how many unpaired electrons are present? An explanation would be great, thanks.

12 years ago

Nitrogen & hydrogen goes react to form ammonia gas as follows: N2(g)+3H2(g)-->2NH3(g) At a certain temperature & pressure, 1.2L of N2 reacts with 3.6L of H2. If all the N2 and H2 are consumed, what volume of NH3, at the same temperature & pressure will be...

12 years ago

Consider the gas-phase transfer of an electron from a sodium atom to a chlorine atom: Na(g)+Cl(g)-->Na^(+)(g)+Cl^(-)(g) I was able to write the reaction that relates to an ionization energy and that relates to an electron affinity. I broke it up into: Na(...

12 years ago

What is the maximum number of electrons in an atom that can have the following quantum numbers? n= 4 ml= -3 ms= +1/2 How would you figure that out given those information? What's the process of that?

12 years ago

How would I go about creating a Lewis Dot structure for the Calcium Carbonate and Magnesium Hydroxide? I know how to do it for any compound with two elements such as SF5, but I don't know how to approach it when there's a polyatomic ion involved and there...

12 years ago

Which do not obey the octet rule? Check all that apply. NO BF3 ICl2^- OPBr3 XeF4 An explanation would be appreciated, thanks.

12 years ago

The solubility of iron(III)hydroxide is 4.39E-10M. What is the Ksp for this compound? I don't know how I would go about this problem.

12 years ago

The value of Kc for the reaction below is 1.6 C(s)+CO2(g)=2CO(g) What is the equilibrium concentration of CO when [CO2]=.50M? The usual ICE table doesn't work for me. C(s)+CO2(g)=2CO(g) I - 0 C -x +2x E .50 +2x 1.6=[2x]^(2)/(.50) That's how I did it but t...

12 years ago

Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is: C2H2(g) + 2H2(g) === C2H6(g) Given the following, what is the Kp for the reaction? C2H2(g): 209.2 ΔG˚f (kJ/mol) H2(g): 0 ΔG˚f (kJ/mol) C2H6(g): -32.89...

12 years ago

Find a number, delta, such that if |x-2|<delta, then |4x-8|<0.1 I don't have a clue how to begin this. My teacher just started off the lesson with this without any explanation so I am at a loss. A step-by-step explanation would be very much appreciated!!

12 years ago

Rank the given compounds based on their relative Brønsted acidities. H-I, H-F, H-SH, H-NH2, H-CH3. I thought it correlated with whichever element was more electronegative was also more acidic. An explanation would be much appreciated.

12 years ago

What is the limit (as u--->2) of square root(4u+1)-3/u-2. I got 1 as an answer, but I want to check if that's right. I heard it could be something else so I'm unsure and doubtful of my answer.

12 years ago

A cup of hot chocolate has temperature 80 C in a room kept at 20 C.? After a half hour the hot chocolate cools to 60 C. a) what is the temperature of the hot chocolate after another half hour? b) when will the chocolate have cooled to 40 C? I think I know...

12 years ago

Why, who makes much of a miracle? As to me I know of nothing else but miracles, Whether I walk the streets of Manhattan, Or dart my sight over the roofs of houses toward the sky, Or wade with naked feet along the beach just in the edge of the water, Or st...

9 years ago

What is 0.90's 3 names like the 0.550 answer.

4 years ago

What is the state flower of Kansas? a: the black-eyed Susan b: the sunflower (MY ANSWER) c: the gerber daisy d: the wild prairie rose What important moment in state history does Kansas Day commemorate? a: when Kansas was acquired from France through the L...

3 years ago

Solve (x-1)(x+4)(3x+4)<0 algebraically using interval chart and showing your full work.

3 years ago

2 and three-fifths minus 1 and one-fourth equals(1 point) Responses Image with alt text: Image with alt text: Image with alt text:

2 years ago

dentify the word that is part of a compound predicate. "The boys," as they were called, amused and delighted audiences everywhere. (1 point) Responses were were called called delighted delighted none

2 years ago

2 and three-fifths minus 1 and one-fourth equals(1 point) Responses 1 7/20 1 2/9 1 5/20 1 1/10

2 years ago

Frances is a photographer who lived back in 1839 and enjoyed the popularity of the daguerreotype photographic process. He had a client who requested two copies of a portrait photograph that Frances was taking. What did Frances likely have to do to accompl...

2 years ago

How do hormones reach target cells? (1 point) Responses They are carried by blood. They are carried by blood. They are carried by signals. They are carried by signals. They are carried in ducts. They are carried in ducts. They are carried by nerves.

2 years ago

What does the thyroid gland control? (1 point) Responses the sugar levels in the blood the sugar levels in the blood the body’s metabolism the body’s metabolism the other endocrine glands the other endocrine glands the body’s response to stress the body’s...

2 years ago

Which gland links the nervous system and the endocrine system, controls many of the pituitary gland functions, and controls the body's water levels? (1 point) Responses the thyroid the thyroid the pancreas the pancreas the hypothalamus the hypothalamus th...

2 years ago

Where do endocrine glands release hormones? (1 point) Responses into tiny tubes called ducts into tiny tubes called ducts through the surface of the skin through the surface of the skin into sweat glands into sweat glands directly into the bloodstream

2 years ago

Which term is the name for the period of sexual development during which a person becomes physically able to reproduce? (1 point) Responses metabolism metabolism puberty puberty reproduction reproduction sperm production

2 years ago

A person feels tired, gains weight, and notices changes in metabolism. Which gland could be the cause? (1 point) Responses the thyroid the thyroid the ovary the ovary the testes the testes the pancreas

2 years ago

How do endocrine glands differ from other body glands, such as sweat glands? (1 point) Responses Endocrine glands can only affect nearby structures. Endocrine glands can only affect nearby structures. Endocrine glands release chemicals into the bloodstrea...

2 years ago

Which endocrine gland controls other endocrine glands? (1 point) Responses the thyroid the thyroid the ovary the ovary the pituitary the pituitary the pancreas

2 years ago

Where is the pituitary gland located? (1 point) Responses behind the stomach behind the stomach on top of the kidneys on top of the kidneys in the throat in the throat in the brain

2 years ago

What is puberty? (1 point) Responses a period in early childhood when growth is very fast a period in early childhood when growth is very fast a period in adolescence when a person becomes sexually mature a period in adolescence when a person becomes sexu...

2 years ago

Read each question carefully. Choose the best answer for each question or statement. Which of the following would be an appropriate greeting at 2:30 pm? (2 points) Responses Guten Tag! Guten Tag! Guten Morgen Guten Morgen Guten Abend! Guten Abend! Gute Na...

2 years ago

Which of the following responses would be appropriate for the question, "Wie heißt du"? (2 points) Responses Ich wohne in Frankfurt. Ich wohne in Frankfurt. Es geht mir gut. Es geht mir gut. Ich komme aus Berlin. Ich komme aus Berlin. Ich heiße Felix.

2 years ago

Which of the following best expresses a more formal farewell? (2 points) Responses Auf Wiedersehen! Auf Wiedersehen! Tschau! Tschau! Tschüß! Tschüß! Bis dann!

2 years ago

Which answer expresses that you are doing well? (2 points) Responses Es geht mir schlecht. Es geht mir schlecht. Es geht mir gut. Es geht mir gut. Es geht so. Es geht so. Es freut mich.

2 years ago

ATP and photovoltaic cells are similar because(1 point) Responses they are both key components of plant cells. they are both key components of plant cells. they both produce chemical and electrical energy. they both produce chemical and electrical energy....

2 years ago

Which molecule is a high-energy output of the light reactions?(1 point) Responses oxygen oxygen hydrogen hydrogen ADP ADP ATP ATP

2 years ago

In photosynthesis, light energy is(1 point) Responses released as usable energy. released as usable energy. stored as short-term energy. stored as short-term energy. stored as chemical energy. stored as chemical energy. captured as thermal energy.

2 years ago

Which is a simplified equation for photosynthesis?(1 point) Responses carbon dioxide + water + light → sugar + oxygen carbon dioxide + water + light → sugar + oxygen sugar + water → carbon dioxide + oxygen + light sugar + water → carbon dioxide + oxygen +...

2 years ago

Glucose is a carbohydrate formed by using energy to convert carbon dioxide and water bonded glucose molecules. What type of reaction does this represent?(1 point) Responses photosynthesis photosynthesis ATP ATP cellular respiration cellular respiration de...

2 years ago

What is the name of the sac that holds the testes? (1 point) Responses scrotum scrotum prostate prostate urethra urethra epididymis

2 years ago

Which part of the male reproductive system is at particular risk after middle age? (1 point) Responses vas deferens vas deferens prostate prostate urethra urethra epididymis

2 years ago

n males, straining to lift heavy objects may result in _____. (1 point) Responses testicular cancer testicular cancer an enlarged prostate an enlarged prostate infertility infertility an inguinal hernia

2 years ago

Which effect is caused by testosterone? (1 point) Responses mumps after puberty mumps after puberty physical changes at puberty physical changes at puberty an undescended testis an undescended testis infertility later in life

2 years ago

Which is a function of the male reproductive system? (1 point) Responses to produce and store sperm to produce and store sperm to release urine to release urine to enlarge the prostate to enlarge the prostate to prevent fertilization

2 years ago

What is semen? (1 point) Responses a combination of sperm cells and egg cells a combination of sperm cells and egg cells a mixture of sperm cells and other fluids a mixture of sperm cells and other fluids a mixture of testosterone and other hormones a mix...

2 years ago

During cellular respiration, four total ATP are produced when pyruvic acid is created. What else is produced as a result of this reaction?(1 point) Responses sugar sugar oxygen oxygen heat heat water

2 years ago

In The Red Badge of Courage, why did the youth enlist? (1 point) Responses He was eager to join the war. He was eager to join the war. He was drafted. He was drafted. He wanted to avenge the death of his friend. He wanted to avenge the death of his friend...

2 years ago

What is a growing baby called from the third month until birth? (1 point) Responses zygote zygote embryo embryo fetus fetus newborn

2 years ago

In Chapter 8, of The Red Badge of Courage, what caused Henry to turn back to the frontline after fleeing? (1 point) Responses He felt guilty about leaving. He felt guilty about leaving. He wanted to get back before anyone noticed he was gone. He wanted to...

2 years ago

Answers

The following answers were posted by visitors named Ezra.

Yeah it was that last digit that threw me off. Thanks for the help. I rounded early so the calculation came out different.

13 years ago

Yeah, I balanced it already; I put it up. My teacher didn't do this, that's why I didn't know how to start, but is that pretty much all I have to do? That extra multiplication/division?

13 years ago

Just to clarify, when I convert from moles to grams, do I double Fe because it has the coefficient 2?

13 years ago

I got the answer (210grams). Thanks.

13 years ago

Could you show me step-by-step how to find the limiting reagent? That's the part I get a little confused in.

13 years ago

I tried to convert the tons to grams and got 7.2E7, but that ended up being wrong. I also need a balanced equation.

13 years ago

So I followed that and got 168.58 and I put it as a scientific notation since it wanted only two sigfigs (1.7E2, I had to round as well), but it was wrong.

13 years ago

Ah, ok. Thanks for all the help.

13 years ago

Still got it wrong. I converted from tons to grams, still no good.

13 years ago

Yeah, I ended up getting it. It was a calculation error and I got the equations as well; I had to have two with the phases. Thanks.

13 years ago

Thanks so much, that really helped me solve other problems.

12 years ago

Thanks so much, that really helped me understand it.

12 years ago

Part B: Use the result from part A, data in this chapter (Chapter 7:Periodic Properties of the Elements), and Hess's law to calculate the enthalpy of the above reaction. Part A is: Na(g)--> Na^(+)+e^(-) Cl(g)+ e^(-)--> Cl^(-)(g)

12 years ago

I'm still not quite sure how you were able to figure that out.

12 years ago

Never mind, I got it.

12 years ago

Could you provide more explanation as to where those numbers came from?

12 years ago

I did it by multiplying by the conjugate. I'm not sure of how to do it any other way. Can you explain how that works?

Lun is correct! 1. b 2. a 3. d 4. b 5. d 6. a 7. c 8. c 9. c 10. a, b, d 11. a, c, d 12. d 13. a 14. a, c, d I got 20/20 100%

7 years ago

Nevermind, I got it all correct.

3 years ago

A machine of velocity ratio of 5 requires 10000J of work to raise a load of 600N through a verticol distance of 1.25m . Find: i)The work output ii)The efficiency of the machine iii)The mechanical advantage of the machine

3 years ago

0.693

3 years ago

Choose the meaning of the bold word. The epicenter of the 9.0 magnitude quake was under the Indian Ocean near the west coast of the Indonesian island of Sumatra . . .(from “The Deadliest Tsunami in History?”) (1 point) Responses size size original source...

2 years ago

Identify the complete sentence. (1 point) Responses Chocolate milk, chocolate fudge, ice cream, and candy. Chocolate milk, chocolate fudge, ice cream, and candy. The average American nearly twelve pounds of chocolate each year. The average American nearly...

2 years ago

Identify the complete sentence. (1 point) Responses Anne E. Kelley, a professor at the University of Wisconsin. Anne E. Kelley, a professor at the University of Wisconsin. Kelley studies the effects of the chemicals in chocolate. Kelley studies the effect...

2 years ago

Identify the sentence that contains a verb phrase. (1 point) Responses African violets are an excellent choice for an indoor garden. African violets are an excellent choice for an indoor garden. These plants are relatively easy to grow. These plants are r...

2 years ago

Identify the sentence that contains a verb phrase. (1 point) Responses Too much light will actually harm the plants. Too much light will actually harm the plants. It makes the leaves turn pale or yellowish. It makes the leaves turn pale or yellowish. The...

2 years ago

Identify the portion that contains a compound subject. During the 1940s and 1950s, Budd Abbott and Lou Costello were a popular comedy team on radio, television, and stage. (1 point) Responses 1940s and 1950s 1940s and 1950s Bud Abbott and Lou Costello Bud...

2 years ago

2 and three-fifths minus 1 and one-fourth equals(1 point) Responses

2 years ago

Amused isn't on of the answers

2 years ago

I'm still confused which answer is it

2 years ago

Identify the fragment. (1 point) Responses My parents are very strict. My parents are very strict. They gave me a 10:00 p.m. curfew. They gave me a 10:00 p.m. curfew. Even on weekends, holidays, and vacations. Even on weekends, holidays, and vacations. Ho...

2 years ago

Identify the fragment. (1 point) Responses Fred gets his driving permit today. Fred gets his driving permit today. His older brother will give him driving lessons. His older brother will give him driving lessons. Next year, he can get his regular license....

2 years ago

Identify the direct object. The object of the game in soccer is to get the ball into the goal. (1 point) Responses object object soccer soccer goal goal none

2 years ago

Identify the direct object. Players usually kick or "head" the ball to their teammates on the field. (1 point) Responses ball ball teammates teammates field

2 years ago

Read the following sentences. 1) How many U.S. presidents can you name? (2) In the year 2000, U.S. citizens elected the 43rd president. (3) Some presidents were elected more than once. (4) Franklin Roosevelt, for example, was elected to four terms in offi...

2 years ago

27/20 isn't an answer

2 years ago

just pick an answer from the answers I listed

2 years ago

Expl_Math_01_04_quiz_prb7

2 years ago

If you lived in the year 1855 and wanted to purchase a daguerreotype, how much could you expect to spend? (1 point) Responses anywhere from 50 cents to 10 dollars a piece anywhere from 50 cents to 10 dollars a piece approximately 30 dollars for one approx...

2 years ago

How does modern day photography allow for instant gratification? (1 point) Responses Once edited, you can share some of your images on social media. Once edited, you can share some of your images on social media. You can upload and edit your images soon a...

2 years ago

The calotype was named after the Greek word kalos. What does kalos mean? (1 point) Responses instant instant beautiful beautiful hideous hideous expensive

2 years ago

How did Robert Cornelius figure out how to take the first ever selfie? (1 point) Responses He held the camera in front of his face, sat down, and replaced the lens cap after the flash popped. He held the camera in front of his face, sat down, and replaced...

2 years ago

For many critics, what is considered the best type of image manipulation? (1 point) Responses manipulations you can’t see manipulations you can’t see manipulations that involve heavy filters manipulations that involve heavy filters manipulations that dras...

2 years ago

If you wanted to create a photograph using the photographic process known as daguerreotype, what two essential items would you need? (1 point) Responses an iodine-sensitized silvered plate and mercury vapor an iodine-sensitized silvered plate and mercury...

2 years ago

Who bought the rights to the early photographic method known as daguerreotype in 1839? (1 point) Responses Louis Daguerre Louis Daguerre the French government the French government Samuel Morse Samuel Morse the English Parliament

2 years ago

When image manipulation was first introduced, photographers were somewhat divided about the concept. What about image manipulation concerned many of them? (1 point) Responses how often it should be done how often it should be done the best filter to use t...

2 years ago

What was one of the most significant drawbacks of the daguerreotype photographic process? (1 point) Responses It took a very specific skill that not many individuals had. It took a very specific skill that not many individuals had. It produced extremely g...

2 years ago

Photography gave painters license to create works that were not shackled to _____ but open to more subjective feelings and impressions. (1 point) Responses parodies parodies imagination imagination fiction fiction realism realism

2 years ago

What term refers to sheets of transparent plastic film that exhibit a reversal of light? (1 point) Responses selfies selfies negative images negative images heliography heliography obscuras

2 years ago

Why was it very difficult to capture the speed of a running dog or the intensity of raindrops dropping in a puddle prior to the advances of modern photography? (1 point) Responses The human brain cannot process movement to capture it. The human brain cann...

2 years ago

Henry was pleased to share an image he recently took of his sister doing the butterfly stroke in a swim meet. He managed to perfectly capture her form as she glided through the pool to break her record. What process did he most likely use to make his came...

2 years ago

Colton has an old photograph that he wants to try and date and learn more about. In an effort to use specific forms of analysis to observe this photograph, what questions would likely be the most helpful for him to ask himself? (1 point) Responses Is the...

From what point of view is The Red Badge of Courage told? (1 point) Responses first-person point of view first-person point of view third-person limited point of view third-person limited point of view third-person omniscient point of view

2 years ago

True or false: Stephen Crane was a celebrated Civil War veteran. (1 point) Responses true true false

2 years ago

Choose the best paraphrase for the following sentence: “The vociferous urchin hurled imprecations upon the man who had pilfered his viands.” (1 point) Responses The loud boy threw stones at the man who had stolen his food. The loud boy threw stones at the...

2 years ago

Complete the following analogy: Affable is to banshee as jaded is to _____. (1 point) Responses child child green green cynical

2 years ago

Choose the three main characters from The Red Badge of Courage. (1 point) Responses the youth, the short one, and the loud one the youth, the short one, and the loud one Henry, Jim, and Conklin Henry, Jim, and Conklin the youth, the loud one, and the tall...

2 years ago

Which of the following is NOT one of the themes of The Red Badge of Courage? (1 point) Responses Nature is indifferent. Nature is indifferent. All is fair in love and war. All is fair in love and war. Courage in battle proves a man

2 years ago

Choose the correct order of events from The Red Badge of Courage. (1 point) Responses Henry marches, fights, and then flees. Henry marches, fights, and then flees. Henry marches, flees, and then fights. Henry marches, flees, and then fights. Henry flees,...

2 years ago

Which of the following is NOT an element of plot? (1 point) Responses point of view point of view climax climax exposition

2 years ago

Which is not a characteristic of preeclampsia? (1 point) Responses swollen wrists and ankles swollen wrists and ankles high blood pressure high blood pressure high levels of protein in urine high levels of protein in urine chromosomal abnormalities

2 years ago

What is the name of the fluid-filled bag of thin tissue that develops around the embryo soon after implantation? (1 point) Responses amniotic sac amniotic sac placenta placenta umbilical cord umbilical cord cervix

2 years ago

Which substance is an important nutrient for pregnant women? (1 point) Responses herbal tea herbal tea lead lead folic acid folic acid mercury

2 years ago

Which is a medical test that involves removing and testing a small piece of the developing placenta? (1 point) Responses chorionic villus sampling chorionic villus sampling preeclampsia preeclampsia amniocentesis amniocentesis ultrasound

2 years ago

Which structure contains blood vessels that carry nutrients and oxygen from the mother to the embryo? (1 point) Responses the blastocyst the blastocyst the umbilical cord the umbilical cord the cervix the cervix the amniotic sac

2 years ago

Which substance is safe for a pregnant woman? (1 point) Responses cat litter cat litter lead lead X-rays X-rays calcium

2 years ago

Which nutrient is critical for proper neural tube development? (1 point) Responses vitamin A vitamin A iron iron folic acid folic acid sodium

2 years ago

Why is prenatal care important throughout pregnancy? (1 point) Responses It causes complications. It causes complications. It requires amniocentesis. It requires amniocentesis. It reduces the number of doctor visits. It reduces the number of doctor visits...

2 years ago

Which is a characteristic of gestational diabetes? (1 point) Responses chromosomal abnormalities chromosomal abnormalities high blood pressure high blood pressure high blood sugar levels high blood sugar levels protein in the urine

2 years ago

In Chapter 9, of The Red Badge of Courage, what is revealed to be the meaning of a “red badge of courage”? (1 point) Responses blood blood a battle wound a battle wound a Purple Heart medal

2 years ago

Choose the vocabulary term that best completes the sentence below. “Johnny,” said his mother, “just because you lost your basketball game doesn’t mean you should sit in your room and _________ all afternoon!” (1 point) Responses harangue harangue re...

2 years ago