i need helpppp



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blank 2:


blank 3:


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I Need Helppppblank 1:blank 2:blank 3:blank 4:

Answers

Answer 1

Answer:

Fe₂(SO₄)₃ + 6KOH —> 3K₂SO₄ + 2Fe(OH)₃

The coefficients are: 1, 6, 3, 2

Explanation:

__Fe₂(SO₄)₃ + __KOH —> __K₂SO₄ + __Fe(OH)₃

To determine the correct coefficients, we shall balance the equation. This can be obtained as follow:

Fe₂(SO₄)₃ + KOH —> K₂SO₄ + Fe(OH)₃

There are 2 atoms of Fe on the left side and 1 atom on the right side. It can be balance by writing 2 before Fe(OH)₃ as shown below:

Fe₂(SO₄)₃ + KOH —> K₂SO₄ + 2Fe(OH)₃

There are 6 atoms of OH on the right side and 1 atom on the left side. It can be balance by writing 6 before KOH as shown below:

Fe₂(SO₄)₃ + 6KOH —> K₂SO₄ + 2Fe(OH)₃

There are 6 atoms of K on the left side and 2 atoms on the right side. It can be balance by writing 3 before K₂SO₄ as shown below:

Fe₂(SO₄)₃ + 6KOH —> 3K₂SO₄ + 2Fe(OH)₃

Now, the equation is balanced.

Therefore, the coefficients are: 1, 6, 3, 2


Related Questions

giving 15 points + brainliest to the correct answer

pic is attached

no scams and links pls

Answers

Answer:

1, mass is like how big it appears and weight could be small and be more weight then something with alot of mass

2,  sorry i dont know

3, Jupiter you would weigh the most and the least is mars

4, the sun and if it was changed all the plants would eventually collide and go out of order

5, gravity, electricity and magnetism

Explanation:

El acido nitrico se obtiene industrialmente por oxidacion de amoniaco (nh3), de acuerdo con la ecuacion: 4nh3 + 702 - h2o + hno2 + 2hno3 ¿ cuanto acido nitrico del 90% de pureza se podra obtener a partir de 1.36 kg de amoniaco?

Answers

Answer:

2800 g de ácido nítrico

Explanation:

La ecuación por la oxidación de amoniaco es:

4NH₃  +  7O₂  →  4H₂O  +  2HNO₂  +  2HNO₃

Si pensamos que el oxígeno es el reactivo limitante, trabajamos con el amoniaco. Convertimos su masa a moles:

1.36 kg = 1360 g

1360 g . 1mol  /17g = 80 moles

Si 4 moles de amoniaco pueden producir 2 moles de acido nítrico

80 moles producirán, (80 . 2)/4 = 40 moles.

Convertimos los moles a gramos:

40 mol . 63g /mol = 2520 g

Si le aplicamos la pureza

2520 g . 100/90 = 2800 g

Well did u ever wonder what's invisible but you wish people could see​

Answers

Answer:

Yes yes i have.

Explanation:

Dont quite understand the way you worded the sentence but ok-

did u ever think that rocks could be squishy and when something touches them they become hard?

or that if we cant see wind...can fish not see water?

The heat of vaporization of a liquid is 84.0 J/g. How many joules of heat would it take to completely vaporize 172 g of this liquid at its boiling point?

Answers

Answer:

14,448 J of heat would it take to completely vaporize 172 g of this liquid at its boiling point.

Explanation:

The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to Q = m*L, where L is called the latent heat of the substance and depends on the type of phase change.

During the evaporation process, a substance goes from a liquid to a gaseous state and needs to absorb a certain amount of heat from its immediate surroundings, which results in its cooling. The heat absorbed is called the heat of vaporization.

So, it is called "heat of vaporization", the energy required to change 1 gram of substance from a liquid state to a gaseous state at the boiling point.

In this case, being:

Q=?m= 172 gL= 84 [tex]\frac{J}{g}[/tex]

and replacing in the expression Q = m*L you get:

Q=172 g*84 [tex]\frac{J}{g}[/tex]

Q=14,448 J

14,448 J of heat would it take to completely vaporize 172 g of this liquid at its boiling point.

58. What is the temperature if 30.1 g of N, in a 1.00-L container is at a pressure of 25.2 atm?

DUE TONIGHT. LINKS DONT WORK SO PLS SHOW WORK. THANK YOU SO MUCH

Answers

Answer:

14°C

Explanation:

In order to use the ideal gas law, you need the number of moles of N2 present.

30.1 g x (mol / 28.02 g) = 1.07 mol N2

Use the ideal gas law: PV = nRT

Now isolate for T(temperature) and plug in your other values:

T = PV / nR

T = (25.2 atm)(1.00 L) / (1.07 mol)(0.08206)

T = 287 K

T(°C) = 287 K - 273 K = 14°C

Therefore, the temperature is 14°C

Complete the statements by writing the number
from the graph.
Temperature vs. Time
The substance is in the gas phase only in region
The substance is in both the liquid and the solid
phase in region
Temperature (°C)
3
400
360
320
280
240
200
160
120
80
40
0
-40
The substance is in only the liquid phase in region
The melting point is the temperature at region
2
The boiling point is the temperature at region
-80
DONE
Time (min) →
Intro

Answers

Answer:

A) The substance is in the gas phase only in "region 5".

B) The substance is in both the liquid and solid phase in "region 2"

C) The substance is only in the liquid phase in "region 3".

D) The melting point is the temperature at "region 2".

E) The boiling point is the temperature at "region 4".

Explanation:

The graph is a graph of the solid, liquid, vapour phase change diagram.

In phase 1, the substance is ice which is the solid phase.

In phase 2,it undergoes melting in a forward reaction.

In phase 3, the melting from phase 2 has now changed to water which is liquid phase.

In phase 4, the substance is undergoing a forward reaction known as evaporation.

In phase 5, the evaporation from stage 4 will turn the liquid into vapour known as the gas phase.

A) The substance is in the gas phase only in "region 5".

B) The substance is in both the liquid and solid phase in "region 2"

C) The substance is only in the liquid phase in "region 3".

D) The melting point is the temperature at "region 2".

E) The boiling point is the temperature at "region 4".

The change of state of a substance occurs when heat is either added or removed from the substance.

What is change of state?

Change of state is a process in which a substance changes from one state of matter to another due to heat changes.

From the graph given:

The substance is in only the liquid phase in region 3.The subsybece is both in the liquid and solid phase at region 2.The melting point is the temperature at region 2The boiling point is the temperature at region 4The substance is in the gas phase only at region 5.

Learn more about change of state at: https://brainly.com/question/9007095

#SPJ5

Why might an organism have more than one arrow coming from them in the food web

Answers

They may eat more than one other organism.

3) Pick the correct definition for : A signal represented by a continuous wave *-1 analog signal-2 digitized siganal-3-encode-4-transmit-5-wave pulse.lzz help

Answers

Answer:

it is analog signal, your welcome

Answer:

Analoge

Explanation:

Analog signal

BRAINILIEST PLEASE

The diagram represents a wave pattern in a certain medium. Answer the following questions based on the diagram.
Referring to Figure 23-2A, the wavelength in the diagram is represented by the distance from:

Answers

Answer:

c

Explanation:

i just took the test

Chemical reactions follow the law of conservation of mass. This is seen on paper as a balanced equation. Explain the law of conservation of mass and how to balance an equation.

Answers

The law of conservation of mass states that. “The mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another”. According to the law of conservation of mass, the mass of the reactants must be equal to the mass of the products for a low energy thermodynamic process.

I’m pretty sure that when balancing a chemical equation no one is thinking about the conservation of mass. It’s all about counting atoms. When you have the same number of each kind of atom on either side of the arrow, then the equation is balanced. Now, that’s not to dismiss the law of conservation of mass which is verified upon closer inspection of the balanced equation.

eg CH4 + O2 → CO2 + H2O - needs balancing.

you use the idea that each type of atoim is conserved - so looking at this you can see it is not currently correct. On the LHS there are 2 O atoms and on the RHS there are 3 O atoms- the number of atoms must remain unchanged. We dont bother about their mass ( although mass is conserved)’

sino niloko mo hindi anko aronong ng sam

How do cancer cells differ from normal cells? Select all that apply.
A
they do not stop at checkpoints
B
they condense their DNA into chromosomes for cell division
C
they go through the S phase
D
they have uncontrolled growth

Answers

Answer:

I'm pretty sure its D

Explanation:

they have uncontrolled growth

The mass of 10 moles of ammonia is 17 grams true or false

Answers

Answer:

False, 17.03*10 = 170.3g not 17

The muscle that pumps blood throughout your body is:

Cardiac muscle

Valentine muscle

Skeletal muscle

Smooth muscle

Answers

Answer:

cardiac

Explanation:

What substances will dissolve in water?
nonpolar
polar

Answers

Answer:

polar

Explanation:

Your mommy buys you a helium balloon at the circus. It has a volume of 4.00 liters at STP. What mass of helium, expressed in grams, does this balloon contain?

Answers

Answer:

i dont know

Explanation:

Cells require a structure that regulates the transfer of material in and out of the cell. This structure is the -
cell membrane.
mitochondria.
nucleus
chloroplast

Answers

Answer:

A.) cell membrane

Explanation:

I hope I helped, have a good day

please help ASAP!! please someone!

Answers

my guess is chlorine since their right next to each other and i dont think their is a right answer due to the question saying predict

hi can someone please help me answer this the question is in pictures

Answers

1. Warm front
2. East
3. Warm stormy weather

Will mark brainly
ASAP
TRy to solve both pls

Answers

Answer:

1. i think its II or III

2. air

Explanation:

Balance the following equations
1.Na+HCI=NaCI+H2
2.Mg+O2=MgO​

Answers

Answer:

1. 2Na + 2HCl = 2NaCl =H2

2. 2Mg + O2 = 2MgO

Explanation:

make sure that the number of atoms of each element is the same on each side of the equation  

1. 2Na + 2HCl = 2NaCl =H2

on LHS of equation,

Na = 2

H = 2

Cl =2

On RHS of equation,

Na=2

H= 2

Cl =2

2. 2Mg + O2 = 2MgO

on LHS of equation,

Mg = 2

O2 = 2

On RHS of equation,

Mg = 2

O2 = 2

The main advantage of solar energy is:

It has very little pollution.
It is free.
It can be used all the time.
It is low in cost.

Answers

Answer:

I think ithe answer is it is free

hope this helps

A volcano has no ____
only heat.

Answers

Answer:

A volcano has no friends only heat.

Explanation:


Zinc nitrate can be produced by reacting an acid and a metal oxide.
Name the acid and the metal oxide used to produce zinc nitrate.
Acid....
Metal oxide.....

Answers

Answer:

Acid - dilute nitric acid

Metal oxide - zinc oxide, zinc hydroxide or zinc carbonate

Explanation:

Zinc Nitrate is produced by carrying out a reaction between the following metal oxides and acid

Acid - dilute nitric acid as concentrated nitric acid produces ammonium nitrate

Metal oxide - zinc oxide, zinc hydroxide or zinc carbonate

Hence the correct answer is

Acid - dilute nitric acid

Metal oxide - zinc oxide, zinc hydroxide or zinc carbonate

state the main postulates of the collision theory​

Answers

Answer:

The rate of a reaction is proportional to the rate of reactant collisions:

reaction rate∝(collisions/time)

The reacting species must collide in an orientation that allows contact between the atoms that will become bonded together in the product.The collision must occur with adequate energy to permit mutual penetration of the reacting species’ valence shells so that the electrons can rearrange and form new bonds (and new chemical species).

Answer:

a,c,d for knewton

Explanation:


HELPP asap I’ll mark you as brainlister

Answers

the answer will be c.

Answer: the answer is D the last one.

Explanation:

hope this helps! have a good day! :) ^-^

what do you think this plant has spikes for, survival, reproduction or defense?

Answers

Answer:

survival and defense......... plz mark me brainliest

I’m filling this space so you can mark other guy brainliest

Match the landform to its description.

People Who Answer First And Got This Right, Will Be Mark As Brainilist!

Answers

Answer:

Cinder cone-made of pieces of lava

caldera-bowl-shaped depression

volcanic soil-rich in nutrients

lava plateau-material fills in valleys

shield volcano-wide summit, gentle slope

Explanation:

Just did it

Answer: See image

Explanation: match the landform to its description

It takes 2 g of chlorine to sanitize 1,000,000g of water. How much chlorine will it take to sanitize a 40,000-gallon pool? ( 1 gallon =3.7L; the density of water is 1.0g/ml ) Show your work

Answers

Answer:

0.1g (Gallon) of chlorine

Explanation:

Formula

1 gallon = 3.7L; the density of water is 1.0g/ml

Given

2g (gallon) of chlorine to sanitize = 1,000,000g (gallon) of water

Solve

If 2g (gallon) chlorine = 1,000,000g (gallon)

∴, ? chlorine = 40,000

The First step; set up an equation

1000000/2 = 40000/?

The Next step; divide 1 million to 2

1000000 ÷ 2 = 500000

Then, divide the result by 40000

40000 ÷ 500000 = 0.08

In the nearest unit that is 0.1

Therefore, it will take 0.1g (gallon) of chlorine to sanitize a 40,000-gallon pool.

Answer:

296

Explanation:

1 gallon = 3.7 L

40,000 gallon

= 40,000 × 3.7

= 148,000 L

1 g = 1 / 1000 L

1,000,000 g

= 1,000,000 / 1000

= 1,000 L

Let x be the amount of chlorine that will it take to sanitize a 40,000-gallon pool.

2 : 1,000 : : x : 148,000

2 / 1,000 = x / 148,000

x × 1,000 = 2 × 148,000

x = ( 2 × 148,000 ) / 1,000

= 2 × 148

x = 296 g

Therefore,

296 g of chlorine will it take to sanitize a 40,000-gallon pool.

( I solved using maths )

Who elects or appoints Representative and Senators?
(Marking brainliest for the quickest correct answer!)

1) the president

2) the electoral college

3) The people

Answers

Answer:

3) The People

Explanation:

Members Of Congress In Both Houses ( Democrats And Republicans ) Are Elected By Direct Popular Vote. Senators Are Elected Via A Statewide Vote ( The People All Around The World ) And Representatives Are Elected By Voters In Each Congressional District.

Does this platform really work?

Answers

Answer:

Yes, it does, it helps very much :))

Explanation:

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One orbit of the earth around the sun equals _____________ miles.595 million360 million5,280 integrated scienceplant reproduction Find side length using trig A weight training program that divides training sessions into upper and lower body training is referred to as which of the following? please help ill give brainliest Twenty-four out of the forty pies at a bake sale are coconuts pies. Whatpercent of the pies are coconut? The statement, "With American and British scientistsworking together we entered the race of discovery againstthe Germans, (line 23-24) shows Marty, a 16-year-old, contracted with Cream-of-the-Crop Cycles to buy an $8,000 motorcycle. He agreed to make monthly payments until the purchase price plus interest were paid in full. It is three years later and Marty has not disaffirmed the contract and has made regular payments on the cycle since turning 19. Which of the following is correct?A) The contract is voidable by Marty.B) The contract is void as soon as it is made.C) The contract is voidable by Cream-of-the-Crop Cycles.D) The contract is voidable by either Marty or Cream-of-the-Crop Cycles. Which of the following effects results from the interference of two soundwaves that have slightly different frequencies?A. BeatsB. IntensityC. LoudnessD. EchoesSUBMI Please help! *no links* GIVING BRAINIEST In 1848, there was a movementfor women's rights. Where didthis movement begin?A. Seneca Falls, N.Y.B. Washington, D.C.C. Philadelphia, PAD. Chicago, IL In addition to raising revenue internally, from which other sources do American Indian tribes receive funding? Check all that apply.foreign governmentsthe federal governmentnational lotteriesoutside businessesgaming establishments Please help! Brainliest to first who gets it right! Tawny notices that Jim has been forgetting to check two forms ofidentification for new patients. How could she best communicate thiseffectively to Jim in a way that avoids conflict?A. "I forget this a lot, too, so I'm not blaming you or anything, but youneed to check two forms of identification."B. "Did you forget your training? We always have to check two formsof identification for each patient."C. "We have to check two forms of identification, so stop forgettingto do it."D. "I think the proper procedure is to check two forms ofidentification for each patient." Pls help ASAP Ill brainlest The SAS postulate involves two corresponding sides and theircorresponding?A) Included angleB) Third angle theoremC) Included side De dnde __________ t?Required to answer. Single choice.(2 Points)serestar8.El zapato _________ debajo de la mesa.Required to answer. Single choice.(2 Points)serestar9.Quin ________ aquella seora?Required to answer. Multiple choice.(2 Points)serestar10.Esas flores ________ de papel.Required to answer. Single choice.(2 Points)serestar11.El padre de Alicia _______ polica.Required to answer. Single choice.(2 Points)serestar12.Su madre _________ en Honduras.Required to answer. Single choice.(2 Points)serestar13.Manolo ______ alto y rubio.Required to answer. Single choice.(2 Points)serestar14._______ las cuatro y media de la maana.Required to answer. Single choice.(2 Points)serestar15.Marcos _____ primo de Mara.Required to answer. Single choice.(2 Points)serestar16.Joel ________ cantando.Required to answer. Single choice.(2 Points)serestar17.Juan y Jos _______ cansados.Required to answer. Single choice.(2 Points)serestar18.Marta _________ enferma.Required to answer. Single choice.(2 Points)serestar Which word in the lines from Langston Hughes's "The Negro Speaks of Rivers" is a multiple-meaning word that hints at times past?I bathed in the Euphrates when dawns were young.I built my hut near the Congo and it lulled me to sleep.I looked upon the Nile and raised the pyramids above it.dawnslulledpyramidsbathed If f(x) = (x 2, then find f(-3). 7. Emily and John will be hiking for 42 hours. Hikers should drink at least 2.7 cups of water for every 2 hours of hiking. How many cups of water should Emily and John drink?