4 Fe + 3 O2 ----> 2 Fe2O3

How many moles of iron(III) oxide, Fe2O3 , will be produced if 4 moles of iron, Fe, are consumed.

Answers

Answer 1

Answer:

320 gm

Explanation:

4 Fe + 3 O2 ----> 2 Fe2O3 How many moles of iron(III) oxide, Fe2O3 , will be produced if 4 moles of iron, Fe, are consumed

for every 4 moles of Fe, 2 moles of Fe2O3 are produced.

Fe2O3 has a molar mass of (56 X 2) + (16 X 3) = 112 + 48 =160

160 X 2 =320 gm


Related Questions

Una pieza cúbica de 34 mm de arista tiene una masa de 310,5 g. Determina su densidad, expresada en kg/m3

Answers

Answer:

     

Explanation:

   

no Español



si tal vez pudieras traducirlo



what is the unique characterization of a ph buffer?

Answers

it has a definite pH value

What mass of silver can be plated onto an object in 33. 5 minutes at 8. 70 A of current? Ag (aq) e- → Ag(s).

Answers

Answer:

need points sorry

Explanation:

Two students, Janelle and Corey, are ready to test their designs.

Janelle made her solar oven by lining a piece of poster board with aluminum foil, shaping it into a cone, and placing it over a piece of black paper in an empty box. The food will go in a plastic sandwich bag on top of the black paper in the center of the cone. The image shows Janelle's cone oven.

cone shaped solar oven
Corey made his solar oven by lining the inside of a shoe box with black paper, placing a piece of plastic wrap over the bottom of the shoe box, and lining the lid of the box with aluminum foil. He used a pencil to prop the lid open at an angle. The food will go on the black paper under the plastic wrap. The image shows Corey's shoe box oven.

shoe box solar oven
Janelle's and Corey's designs both use aluminum foil, black paper, and either a plastic bag or plastic wrap. What is the purpose of each of these materials in the designs?

Answers

Anwser

my anwser is both will absorb and the will retain

Janelle made her solar oven by lining a piece of poster board with aluminum foil, shaping it into a cone, and placing it over a piece of black paper in an empty box. The food will go in a plastic sandwich bag on top of the black paper in the center of the cone. The image shows Janelle's cone oven.

cone shaped solar oven

Corey made his solar oven by lining the inside of a shoe box with black paper, placing a piece of plastic wrap over the bottom of the shoe box, and lining the lid of the box with aluminum foil. He used a pencil to prop the lid open at an angle. The food will go on the black paper under the plastic wrap. The image shows Corey's shoe box oven.

shoe box solar oven

Janelle's and Corey's designs both use aluminum foil, black paper, and either a plastic bag or plastic wrap so that means that they both absorb and they will retain and is u ever do it do not put it under a shave

Step 2: Predict the Number of Nuclei at Each Half-Life
0.5"
Using the values from Step 1, predict the pattern
for the decay of 100 atoms over the course of eight
half-life cycles, Round to the nearest whole
number of atoms. Record in the appropriate
blanks
Time- Half-
Life Cycles, no
Initial
Radioactive Atoms
(Predicted)
100
1
1
0.5
А
2
0.25
A= 27
25
3
0.125
B
B = 16
4.
0.0625
6
C = 9
5
0.03125
С
D=4
6
0.015625
D
7
0.0078125
1
E
8
0.00390625
E
DONE
) Intro

Answers

Answer:

A=50

B=13

C=3

D=2

E=0

Explanation:

Which type of electromagnetic radiation had a lower frequency than infrared radiation

Answers

Answer:

Radio waves

Explanation:

Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

What happens to the molecules that make up a chocolate chip as it is heated in the oven?​

Answers

Answer:As thermal energy is transferred to the chocolate, its molecules vibrate faster and faster. Eventually they vibrate fast enough that they start to slide past each other and move around. As this happens, the chocolate changes from a solid to a liquid.

Explanation:

Answer:

it becomes

Explanation:

as a soggy liquid

that is how it becomes

liquid and little thick

as it is heated

hope it helps you

thank you

A student graphed the position of a cart during a 7-second time interval.
Which statement best describes the cart?

A.
The cart was stationary except for a short burst of acceleration of 0.5 m/s².

B.
The cart accelerated at a constant rate of approximately 0.8 m/s².

C.
The cart was stationary with a velocity of 0 m/s for the entire 7 seconds.

D.
The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds.

Answers

Hi!
Answer: D the cart moved at a constant velocity of 0.5m/s for the entire 7 seconds.

The cart accelerated at a constant rate of approximately 0.8 m/s². Option (B) is correct.

Option B is the best description based on the graphed position data during the 7-second time interval. The cart's acceleration can be determined by analyzing the shape of the position-time graph.

If the cart was stationary, the position-time graph would be a horizontal line (option C). If the cart moved at a constant velocity, the graph would be a straight line inclined at a constant angle (option D).

However, the graph likely shows a curved line, indicating changing position over time. This suggests that the cart experienced acceleration. To further confirm, calculate the acceleration:

Acceleration (a) = Δv / Δt,

where Δv is the change in velocity and Δt is the change in time.

Given the time interval is 7 seconds, and the initial and final velocities are likely different, you can calculate the average acceleration. If the average acceleration is approximately 0.8 m/s², then option B is correct.

The graphed data aligns with the scenario of constant acceleration, supporting option B.

To learn more about acceleration  here

https://brainly.com/question/2303856

#SPJ3

examples of physical properties.

Answers

Answer: Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. We can observe some physical properties, such as density and color, without changing the physical state of the matter observed.

Explanation:

Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen bromide (hbr)

Answers

[tex]\\ \sf\longmapsto H_2+Br_2\longrightarrow HBr[/tex]

Balanced equation

[tex]\\ \sf\longmapsto H_2+Br_2\longrightarrow 2HBr[/tex]

On reactant side:-

H=2Br=2

On products side

H=2Br=2

The balanced chemical equation for the synthesis of hydrogen bromide is [tex]\rm H_2\;+\;Br_2\;\rightarrow\;2\;HBr[/tex].

What is a balanced chemical equation?

The balanced chemical equation has been given as the reaction in which the number of atoms for each element on the product and the reactant side is equal.

The HBr has been formed with the reaction of the hydrogen and the bromine. The balanced chemical equation for the reaction has been:

[tex]\rm H_2\;+\;Br_2\;\rightarrow\;2\;HBr[/tex]

Learn more about the balanced chemical equations, here;

https://brainly.com/question/8062886

what is the molecular formula of linoleic acid?

Answers

Answer:

C18H32O2

Explanation:

This is it, i hope it helps Good luck.

Part B
Emmerson pours the clear water into the side of the vase with the soil and gravel. The series of animated pictures shows how his model looked over time. What do you observe?

Answers

Answer:

experiment can show the movement of pollutants through the groundwater!

Explanation:

Answer:

I see that the water is starting to get darker and darker which means it is getting dirtier the higher is goes up.  So that means that the soil and gravel will pollute the water with dirt, gravel, etc.

Explanation: Please give brainliest have a good day:)

why do we use acid during the detection of halogens​

Answers

Answer:

Nitric acid decomposes sodium cyanide and sodium halide. else, they precipitate in test and misguide the result. Therefore, dilute nitric acid is added before testing halogens to expel all the gases if evolved.

Ammonium nitrate criss cross formula

Answers

Answer:

By using the criss cross method,the -1 charge of nitrate ion is shifted to ammonium ion and +1 charge of ammonium ion is shifted to nitrate ion. In this way, the final formula NH4NO3 is formed for the ammonium nitrate.

Having studied the data for patterns and trends, you should now be able to draw
some conclusions about how knowing the half-life of the element Lokium would
help you determine the absolute age of rock in which this element is found. In a
paragraph, create an imaginary example of finding a given amount of Lokium and
DOL in a rock, and then determining the absolute age of that rock. Assume that
each trial represents 1,000 years

Answers

Answer:

The situation given here is imaginary such that the life of Rock has to be found using the half-life of the element lokium that has been found inside the rock.

Half-life of any material is the amount of time taken by that particular material to decay. Now the amount of lokium found in rock can show after how many half-lives this amount has been left out.

The time elapsed will be log (L) atoms X half-life.

Explanation:

How could you break down the compound calcium carbonate into the elements that make it up ?
A. by melting
B. by crushing
C. with filter
D. with chemical changes

Answers

Answer:

A. By melting

Explanation:

You can break it down by thermal decomposition which is basically melting it and thats because many metal carbonates can take part in thermal decomposition reactions.

for our sample energy scoring sheet, how do we calculate the energy of roasting?

Answers

multiply your temp change by 12

hope this helps!

How does energy move through a wave? 3 evidence and reasons supporting you answer.

Answers

Sound, energy and radio travel in waves

Can you use volume alone to predict whether an object will sink or float? Explain your answer

Answers

Answer:

Can volume alone be used to predict whether an object will sink or float? -No, you need both mass and volume to find its density to see if it can float.

I NEED HELP
so is for example
FeO + H2O ---> Fe(OH)2
And
Fe + 2H20 ---> Fe(OH)2 + H2
The same? Same thing for other metals

Answers

Answer:

no

Explanation:

because when is iron oxide + water given you iron hydroxide while the other one is Iron plus 2 moles of water giving you iron hydroxide and hydrogen

How does One determine number of electron domains in molecul or ion

Answers

Answer:

The number of electron domains in a molecule or ion is the number of bonds (double and triple bonds count as one domain) plus the number of nonbonding (lone) electron pairs.

Explanation:

what are the uses of the periodic table​

Answers

Answer:

In today's world, the periodic table is very valuable for both students and scientists since it allows them to forecast the sorts of chemical reactions in which a specific element is likely to engage. Rather than memorizing facts and figures for each element, students and scientists can learn a great deal by simply looking at the table. They can learn about an element's reactivity, whether it is likely to conduct electricity, whether it is hard or soft, and many other characteristics by simply looking at the table.

Groups are made up of elements that are in the same column as one another and have attributes that are comparable to one another. If we look at the first column (the alkali metals), for example, we see that they are all metals that have a 1+ charge in reactions, react quickly with water and combine easily with nonmetals.

Periods are made up of elements that are arranged in a row next to one another and have the same maximum unexcited electron energy level as one another.

The periodic table also has the advantage of providing all the information you need to balance chemical processes at a glance, which is a very valuable feature. The atomic number and, in most cases, the atomic weight of each element are included in the table. The group of an element indicates the characteristic charge of that element.

Explanation:

The minimum collision energy between two molecules in order for them to react is called A activation energy. B dispersal energy C spontaneous energy D transition energy.​

Answers

A: activation energy

hope i helped :D

There are no transition elements between the Group 2 element magnesium and the
Group 3 element aluminium.
Give a reason why, in terms of electronic structure.

Answers

Answer:

Atomic orbital energy ordering.

Explanation:

The transition metals constitute the d-block. The answer to your question has to do with the energy ordering of atomic orbitals. Specifically, the 3s orbitals are lower in energy than 3p, which are lower in energy than 4s, which are lower in energy than 3d (remember the principal quantum number for d orbitals is one minus the principle quantum number of the shell so n = 4 level's d orbitals are the 3d orbitals). According to the Aufbau principle, atomic orbitals are filled with electrons from the lowest energy up. So the orbitals would have to be filled in the order of 3s, 3p, 4s, and then 3d. Magnesium has its last valence electron residing in the 3s orbital and Aluminum has its last valence electron residing in the first 3p orbital (specifically the 3px orbital, which is aligned horizontally in the 3d plane. The three p orbitals for all principle quantum levels are px, py, pz, with the x, y, z describing the orientation in the 3d plane). The 3d has not yet been reached in terms of energy ordering. This is why there are no transition elements between magnesium and aluminum, in terms of electronic structure.

48. Categorize each of the elements in problem 47 as a
representative element or a transition metal

Will give brainliest :)

Answers

Answer:

The correct answer is a transition metal.

Explanation:

Hope it helps.

Comments:

Hearts and RatesMark me as Brainliest AnswerFollow Me

All the given elements are representative elements as they have valence electrons present in p -orbital except option a which has valence electron d-orbital and hence is not a representative element.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

Thus, all the given elements are representative elements as they have valence electrons present in p -orbital except option a which has valence electron d-orbital and hence is not a representative element.

Learn more about elements,here:

https://brainly.com/question/24407115

#SPJ3

rutherford and JJ thompson both contributed to what we know about the structure of the atom. What experiments did they perform and how did it change what we know about the structure of the atom? Furthermore describe the structure of an atom using only two words

Answers

Answer:

J.J. Thomson's experiments with cathode-ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. I would describe the structure of an atom as the plum pudding model.

Which surface has the least amount of friction?
An ice rink
A grassy field
A paved road
A sidewalk

Answers

Answer:

An ice rink has the least amount of friction.

Any smooth surface has the least amount of friction.

I hope this helped at all.

Which surface has the least amount of friction?

An ice rink

A grassy field

A paved road

A sidewalk

Answer:

An Ice rink

Why does sugar taste sweet
PLEASE EXPLAIN

Answers

Answer:

Because i comes from cane.

Phân tử khối của CO² gấp mấy lần phân tử khối khí H²

Answers

Explanation:

DCO2/H2 = 44/2 = 22............................

Fe(s) + CuSO4(aq) —> FeSO4(aq) + Cu(s)

This chemical equation represents a __ reaction.

A. synthesis
B. decomposition
C. neutralization
D. single replacement

Answers

Answer:

D

Explanation:

single replacement....iron combined with tetraoxosulphate (VI)

Other Questions
If you can't see your nose do your eye's pretend it is not there ? Study the cartoon of Uncle Sam standing on a world map. A political cartoon of Uncle Sam standing on a world map. Uncle Sam looks over the Western hemisphere while politicians from other countries look on in the Eastern hemisphere. A hat labeled American Doctrine sits on Latin America.What does this image portray about US attitudes toward the rest of the world?The US saw Europe as an area where new colonies could be taken.The US wanted European countries to give aid to Latin American countries.The US tried to invite European countries to get involved in Latin American affairs.The US planned to keep European countries from becoming involved in Latin America. Find the slope (show your solution)y=4x+5please help me to answer this i really really need it John Watson performed a controversial set of experiments on: A. a monkey B. a dog C. a baby D. his sister week 9 classwork pt 2 Help me please,I am doing a form for my class, but I can't seem to understand the last two questions. It would be greatly appreciated if one could help with my questions.Question one: What is the tone of John F. Kennedy's Inaugural Address?Question two: What is the subject of John F. Kennedy's Inaugural Address?JFK's Inaugural Address Link:https://www.ourdocuments.gov/doc.php?flash=false&doc=91&page=transcript Your puzzled neibor student,Augmreli 1. What are the electronic hand tools presented in the video? 2. How many cleaning materials where used to maintain the tools? 3. Enumerate the steps in maintaining the hand tools presented in the video clip. Create a random triangle, ABC Measure and record its angles. Encouraging free trade between countries and helping countries negotiate trade conflicts are the two most important jobs of the __________. What must be true about two objects of heat is flowing between them? What, according to Judge Davis, has changed and not changed since the ratification of the Bill of Rights that informs modern-day interpretation? Find the value of x.(8x + 2)60Y70Z In your response be very specific and break down each item on the list, then state if they would be classified the same or differently.Consider the definition for each as you respond. atoms elements compounds molecules matter Disagreements over the proper role of government led to:A. more taxesB. The Espionage ActC. The First Political Parties D. More government jobs PLEASE HELP ME ASAP PLEASE How did the Nazis define someone as being Jewish?Select one:a.either three or four Jewish grandparentsb.one drop of Jewish bloodOne drop of Jewish bloodc.one Jewish grandparentd.known as a practicing Jew A sales associate relies on a(n) ________ to confirm any special packaging and promotions related to a purchase. Write the linear equation in slope-intercept form.2x + y = 17 Alguien me puede ayudar en esta tarea por favor la necesito para maana What is the main point of a thematic essay?a. adding more supporting detailsb. improving the flow of sentencesc. catching and correcting errors in punctuationd. focusing on a different main storyI don't need an answer, just wanted to add this here in case anyone doesn't know, it's C. a%b when a=2 and b=1/2