Calculate the ΔHrxn for the following


Fe2O3(s)+3CO→Fe(s)+3CO2(g)
Given:
4Fe(s)+3O2(g)→2Fe2O3(s)
ΔH = -1645.36

2CO2(g)→2CO(g)+O2(g)
ΔH = 567.66

Answers

Answer 1

Answer: alright now listen fe203(s)=567.66666

Explanation:


Related Questions

H2O is an example of what formula?

Answers

H20 is a example of oxygen and water.

I think it is the first one.

Answers

Answer:

No, it's B.

Explanation:

It is a chemical reaction, but the reason for the lack of change in mass is not because atoms rearrange to form new substances. It's because atoms generally don't lose mass during a chemical reaction, because mass cannot be created or destroyed.

Answer:

it is actually e

because even tho the old atoms turned into new atoms they had the same mass still

hope this helps!

On Sunday NASA's SpaceX launched 4 astronauts into space for a mission lasting 5 months. They named their spacecraft RESILIENCE.

In 4-6 sentences explain what the word RESILIENCE means to you. Also, why do you think they named their spacecraft that? Please respond to this prompt in your own words, there is no need to google!

!!DO NOT GOOGLE IT!!

Answers

Answer: I think they named it RESILIENCE to point out that it should be resilient to harsh conditions and that it would be able to push through with little damage. when I hear the word resilience I think of strong able to push through. I think of myself of resilient because _________________. Naming the space craft RESILIENCE is smart because the astronauts will know they are safe when they launch.

Explanation:

The weather is warm and dry.
Which change would a cold front bring?
several days of gray skies
rain or thunderstorms
dry air and sunny skies
extended period of rain or snow

Answers

Answer:

Thunderstorms and grey clouds

Explanation:

No matter what the weather is before, any type of fronts will always bring the same weather

Please vote for Brainliest and I hope this helps!

Answer: Rain and thunderstorms

Explanation: Cumulonimbus Clouds are produced in cold fronts. (cumulonimbus clouds are clouds that make big storms)

What makes Earth unique among the terrestrial planets?
Its orbit around the Sun is roughly circular.
It has a core that's made of iron at its center.
It is home to a variety of life-forms.
It is much hotter than all of the other terrestrial planets.

Answers

It is home to a variety of life-forms.

Angelina wants to observe what will happen when two rocks with different masses are pushed down a slide. Angelina puts the two rocks at the top of the slide and pushes each rock with an equal force. Below the slide, Angelina's friend Mary stands to catch the sliding rocks. Based on Newton's law of force and acceleration, what happens to the rocks as they are traveling down the slide?
A) The acceleration of each rock is equal to zero.
B) The rock with the smaller mass has less acceleration than the larger rock.
C) The two rocks have the same acceleration.
D) The rock with the larger mass has less acceleration than the smaller rock.

Answers

Answer:

I believe it is D

Explanation:

I think it's D because if something has more mass, it carries more weight, weight slows stuff down. I might be wrong and I am sorry if I am.

I think it is d to!!!!!!

What is the difference between a meteor and a meteorite?

Answers

Answer:

When a meteoroid survives a trip through the atmosphere and hits the ground, it's called a meteorite.

Explanation:

When meteoroids enter Earth's atmosphere (or that of another planet, like Mars) at high speed and burn up, the fireballs or “shooting stars” are called meteors. When a meteoroid survives a trip through the atmosphere and hits the ground, it's called a meteorite.

Answer:

hiiii

Explanation:

3. What Sl unit would you use to identify the volume of blood in the human body?
A.milligrams B.Liters C.Millimeters D.Pounds​

Answers

Answer: the answer is B. liters

What are some examples of how we use Earth’s natural resources?

Answers

Water to take a shower, dirt to plant veggies

On Sunday NASA's SpaceX launched 4 astronauts into space for a mission lasting 5 months. They named their spacecraft RESILIENCE.
In 4-6 sentences explain what the word RESILIENCE means to you. Also, why do you think they named their spacecraft that? Please respond to this prompt in your own words, there is no need to google!

!!DO NOT GOOGLE IT!!

Answers

Answer:

resilience means to fight thru or overcome something as the spacecraft was meant to symbolize to let the people know that this machine was built to survive. resilience also means to keep pushing over the limits

Explanation:

What do you notice about how plants get their energy in a DESERT ECOSYSTEM?

Brainliest will be provided :) first come first serve

Answers

Desert plants work hard to make use of what's available. They use the sun's energy to convert carbon dioxide (CO2) and water (H2O) into sugar, a process called photosynthesis. During this process, stomata on a plant's leaves and stems open to absorb carbon dioxide from the air and in return release oxygen. :)

cactus plants . desert get energy giving in no watring

Explanation:

cactus plants in desert place

4. How many moles of molecules are there in 500g of sodium chloride?
a) 5.6 mol b) 8.5 mol c) 0.67 mol d) 3 mol
HEY GUYS???? HELP??? PLEASE

Answers

Answer:

b) 8.5 mol

Explanation:

500 g NaCl * 1 mol/ 58.44 g NaCl = 8.5 mol

the answer is B!!!!!!!!!

The Case of the Missing Mass: Students have completed the experiment of combining vinegar and baking soda. They notice that their beginning mass in the video does not match the ending one. Use the equation(below) and the Law of Conservation of Mass to explain why the students have NOT destroyed atoms in their experiment. This is the chemical equation for the experiment:

Answers

They notice that their beginning mass in the video does not match ... Use the equation(below) and the Law of Conservation of ... This is the chemical equation for the experiment:.

In order for radiation to transfer heat,
a electromagnetic waves must be transmitted

b objects must be in direct physical contact

c particles must circulate and move in a liquid or gas

d thermal energy must move from cold to hot objects

Answers

The correct answer is A

Answer:

electromagnetic waves must be transmitted

Explanation:

i just did the quize hope this helps

Pls help me! I rlly need help.

Answers

B. a physical change

Answer:

c

Explanation:

Comparing your performance in this workout to how you did in the last Yoga workout (4 weeks ago); how did you do? (full sentence response) *

Answers

Answer:

i did pretty good yo

Explanation:

Explain how plate tectonics are responsible for where we find some of our natural resources.

Answers

At divergent boundaries, plates separate, forming a narrow rift valley. Here, geysers spurt super-heated water, and magma, or molten rock, rises from the mantle and solidifies into basalt, forming new crust. Thus, at divergent boundaries, oceanic crust is created.

Most of our natural resources are embedded beneath the subsurface at different depth. These resources could find their way to depths and positions where that can be mined or to surface at divergent plate boundaries.

Divergent plate boundaries marks the positions where the earth's plates move apart and causing uplift. At this boundary, several resources beneath the subsurface may rise as pressure is eased.

Therefore, the presence of certain natural resources could be due to the occurence of plate tectonics.

Learn more : https://brainly.com/question/15687460

Where in the plot pattern do we see the tension peak?

A- Climax
B- Exposition
C- Conclusion
D- Rising action i really need help

Answers

Answer:

the climax

Explanation:

the climax is where the tension builds up creating a good or exciting plot i hope this helps!

The climax

The climax is the middle of the story. If you think of a story mountain it is the peak. Also it is where all of the tension builds up.

What is the relationship between a front and cloud formation?
Here's a little more info
When conditions are right, two air masses can come together and make a tornado. A humid and warm air mass from the south meets a cold and dry air mass from the north, and the cold air moves under the warm air. This creates a low pressure area, drawing air up and in. The air rotates as it rises, gathering speed and forming a funnel.

Answers

Answer:

Cold air is more dense than warm air, so when a warm air mass meets a cold air mass, the cold air ends up below the warm air. Once the air has risen, it cools and clouds can form. Weather fronts can cause clouds to form.

Answer:

Weather fronts can cause clouds to form. Fronts occur when two large masses of air collide at the Earth's surface. Warm fronts produce clouds when warm air replaces cold air by sliding above it.

Explanation:

Each statement best explains why it is more difficult to use coal versus other alternate source of energy except:

1. Coal produces more pollutants in the air.

2. It is more difficult to mine for coal than other minerals.

3. Coals are not commonly used because it is more difficult to burn.

4. Coals are not commonly used because it produces more negative impact to the environment.

Answers

Answer:

Coal produces more pollutants in the air.

Explanation:

Each other answer has the words 'more difficult' or 'not commonly used.   I think this is right...I won't see my grade for a long time though.... very, truly sorry if it is wrong! :)                                                                                          

I NEED AN ANSWER ASAP!!! How is the Earth's layers be compared to a hard boiled egg?

Answers

Answer:

The shell represents the crust. The hydrosphere and the biosphere interact with this layer.

Explanation:

The layers, which make up the hard-boiled egg are comparable to the layers, which make up the Earth. Flowing water in the hydrosphere weathers rocks into small pieces, which are eroded and deposited to different locations on Earth.

Answer:

Explanation:

The crust can be compared to the shell of the egg

The white part of the egg could be compared to the mantle

And the yolk represents the core

Hope this helps :)

What does the author list in the passage?

a
scientists who study electromagnetic radiation
b
different types of electromagnetic spectrums
c
different types of electromagnetic radiation
d
the differences between radio waves and microwave

Answers

Answer:

B --> Different types of electromagnetic radiation

Explanation:

Science tells us that light is the reason we are able to see objects. Without light, we wouldn't be able to ... The electromagnetic spectrum is the range of all types of electromagnetic ... C x-rays. D light.

Answer:

b i think

Explanation:

Which model would represent Newton's law of action-reaction? *
A) Toy car rolling down a ramp.
B) Toy rocket being launched.
C) Toy boat floating in the water.
D) Toy tractor being pushed over a hill.

Answers

D
I’m not 100% sure but you have to use force/motion to put it into action and it’s reacting to being pushed by moving
B or A I’m not sure but I know it’s one of those. Newton discovered gravity and those are the only two that are related to gravity.

Compare and contrast the applications and benefits of circle graphs and bar charts

Answers

Answer: sorry here for points

plzs help
What type of organic compound is used for building cell parts?

Answers

Carbohydrates! hope this helped!

Answer:

Carbohydrates

Please help
I will mark brainlyiest

Answers

Answer:

The answer is A. Nickel, zinc, and iron

Explanation:

In H2O, the 2 is called a

Answers

2 hydrogen atoms hope this helps

Convection currents are liquid fluids that are traveling when there is a change in temperature or density inside the material.

Answers

Answer:

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Explanation:

Because particles within a solid are fixed in place, convection currents are seen only in gases and liquids. Convection is a heat transfer process.

Coefficient -
4) NaC2H302
Subscript for Na-
Subscript for C-
Subscript for H
Subscript for 0

Answers

Answer:

sub for NA-

Explanation:

plss give brainliest

Answer:

Explanation:

Na-1

C-2

H-3

O-2

Can anyone help me with this?
Extension Activity: The Coca-Cola Company has been getting angry letters from drinkers of Diet Coke. Because their soda weighs less they feel like they’re getting ripped off. If they pay the same amount for a diet coke it should have the same amount of soda in it. It is your job as manager of customer relations to answer these angry letters.
For homework, write a sample letter to be approved by the company president that contains the following: A scientific explanation of why the Diet coke weighs less and a sentence or two addressing the customer’s concerns that they are getting less soda than in a regular can or bottle. Remember – your next promotion depends on how well you solve problems for the company!
Your sample letter should contain at least five good sentences: at least three for the scientific explanation plus two more addressing the customer’s concerns. Explain the formula for density and how it is measured.
Some numbers that might help you are:
Coke
D1.08 383.7G 355mL
diet coke .096 342G 355mL
Sugar 25.9g
Aspartame 5.1g
water 1

Answers

Answer:

in the letter i would put in it that

Did you get our brand or did you get the store brand because the store brand is different from our brand so try our brand.

Explanation:

Other Questions
You are skateboarding in your friend's driveway. You hit a rock and yourskateboard stops, but you go flying forward and hit the ground because of EXCERPT FROM 'A CHRISTMAS CAROL': MARLEY'S GHOSTWhat does the ghost of Marley regret the most?a)not making more money when he was in business with Scroogeb)not being more kind to other people, especially during Christmasc)spending seven years traveling with the windd)not expanding their business to new areas Bob drove his bike at a constant speed he drove 2 mile in 20 minutes which of these quotations represents the amount of time in minutes that it takes him to why a distance D miles lynette like to wear______jewelry.(flashy or eye-catching)She makes a good babysitter because she has a_______personality.(playful or childish)The fall air felt______as we walked to school.(crisp or chilly)The_______ neighbor tried to find out what was going on in the home next door.(curious or nosy) 30% de qu nmero es 40? Complete the chemical equation for this reaction.Ca + .......H2O Ca(OH)2 + ............... What is 4/6 dived by 3/12 The process of antibody-dependent cellular cytotoxicity (ADCC) allows ______ cells to bind to antibody-coated host cells that may have viral proteins in their plasma membrane in order to kill them, inducing apoptosis and limiting viral spread. If we scale a figure by 600%, what number do we multiply the side lengths by? PLS HURRY Answer the way they want to idk how help pleaseeeeeeew GUESS THE SONG ITS AN OLD ONE:I was a lonely teenage bronkin' buckWith a pink carnation and a pick-up truckBut I knew that I was out of luckThe day the music diedI started singingBye bye, Miss American PieDrove my Chevy to the levyBut the levy was dryAnd good old boys were drinking whiskey and ryeSinging this will be the day that I dieThis will be the day that I dieI met a girl who sang the bluesAnd I asked her for some happy newsBut she just smiled and turned awayWell, I went down to the sacred storeWhere I heard the music years beforeBut the man there said the music wouldn't play who play pubg? Check out my account : sweetiepie67 PLEASE HELPP WILL GIVE BRAINLIEST IF CORRECT!! no copied answers! The winner of a jump rope contest jumped 4 times as long as the person who finished in fifth place. The fifth place finisher jump rope for 120 seconds. Which equation shows the total number of seconds the winner jumped rope? Ansley is making a strawberry juice. The recipe calls for 1 part concentrate to 5 parts water. Ansley has an 8 ounce can of concentrate. How large of a pitcher does Ansley need? According to article 1 of the constitution the legislative branch is made up of Some preganglionic neuron synapses with the cell body of thepostganglionic neuron in theganglionThese ganglia are linked together to form theName some of the tissue/organs are innervated by these neurons:Other preganglionic neurons pass through the sympathetic trunk andsynapse with the postganglionic neuron anterior to the spinal cord inganglia.The axons of these preganglionic neurons are callednerves.Name some of the tissue/organs are innervated by these neurons:The sympathetic nervous system also send neurons directly from thespinal cord to synapse onto thegland.This would cause the release ofinto theblood. Which sentence correctly uses quotation marks and punctuation?A They wailed, "It's heading straight toward us!"B They wailed ",It's heading straight toward us!"C They wailed, It's heading straight toward us"!D They wailed "It's heading straight toward us!" what is a Job?1. Work that you do for pay2. refers to any useful activity.3. Series of related jobs or occupations.4. A career of jobs. Charlie has a giant bag of gumballs and wants to share them with his friends. He gives half of what he has to his buddy, Jaysen. He gives half of what's left after that to Marinda. Then he gives half of what's left now to Zack. His mom makes him give 5 gumballs to his sister. Now he has 10 gumballs left. How many gumballs did Charlie have to begin with?