Combustion of hydrocarbons such as octane (C_8H_18) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the Sun's heat, raising the average temperature of the Earth. For this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.
1. Write a balanced chemical equation, including physical state symbols, for the combustion of liquid octane into gaseous carbon dioxide and gaseous water.
2. Suppose 0.330 kg of octane are burned in air at a pressure of exactly 1 atm and a temperature of 10.0 ?C. Calculate the volume of carbon dioxide gas that is produced. Round your answer to 3 significant digits.

Answers

Answer 1

Answer: 1. [tex]2C_8H_{18}(l)+25O_2(g)\rightarrow 16CO_2(g)+18H_2O(g)[/tex]

2. The volume of carbon dioxide gas that is produced is 537 L

Explanation:

1. Combustion is defined as the type of chemical reaction where a hydrocarbon is combusted in the presence of oxygen to give carbon dioxide and water.

The balanced reaction for combustion of octane is:

[tex]2C_8H_{18}(l)+25O_2(g)\rightarrow 16CO_2(g)+18H_2O(g)[/tex]

2.

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]   [tex]\text{Moles of octane}=\frac{0.330\times 1000g}{114.23g/mol}=2.89moles[/tex]

According to stoichiometry:

2 moles of octane produce = 16 moles of carbon dioxide

2.89 moles of octane produce = [tex]\frac{16}{2}\times 2.89=23.1moles[/tex] of carbon dioxide

According to ideal gas equation:

[tex]PV=nRT[/tex]

P = pressure of gas = 1 atm

V = Volume of gas = ?

n = number of moles = 23.1

R = gas constant =[tex]0.0821Latm/Kmol[/tex]

T =temperature =[tex]10.0^0C=(10+273)K=283K[/tex]

[tex]V=\frac{nRT}{P}[/tex]

[tex]V=\frac{23.1\times 0.0821Latm/K mol\times 283K}{1atm}=537L[/tex]

Thus the volume of carbon dioxide gas that is produced is 537 L


Related Questions

Listed below are characteristics that serve as evidence of shared ancestry between fish and reptiles. Select the option that applies only to embryos rather than adults (1 point)
Ogill slits that turn into gills
O hatch from and lay eggs
O scales as a form of skin
Ospines and tails

Answers

i’m not sure but it’s either B or A

Answer:

Its option A

Explanation:

It cant be option B because the adults lay the eggs, option A is correct because they embryos gill slits turn into gills.

Please help me
5. Where is potential energy decreasing?
А B C D

Answers

Answer:

D

Explanation:

I believe it is D. your kinetic energy would be at b. A, the cart would be going at a constant rate, because there is no hill or steep slope.

B it is goin down hill and that means it decreased

Determine the m/v% of a solution where 5 g of sugar is dissolved in enough water to yield 250 mL of total solution

Answers

Answer:

2 %m/v

Explanation:

Step 1: Given data

Mass of sugar (solute): 5 gVolume of solution: 250 mL

Step 2: Calculate the %m/v of sugar in the solution

We will use the following expression.

%m/v = mass of sugar/volume of solution × 100%

%m/v = 5 g/250 mL × 100% = 2 %m/v

This means that there are 2 grams of sugar every 100 milliliters of solution.

PLEASE PLEASE HELP ME!!!A 450 ml gas sample has a pressure of 1.25 atm at 65 °C. What is the temperature, in °C, at which the gas will expand to 865
mL with a pressure of 0.89 atm?

Answers

Answer:

89°C

Explanation:

Combined Gas Law (P₁V₁)/T₁ = (P₂V₂)/T₂

(1.25 atm)(450 mL)/(65°C) = (0.89 atm)(865 mL)/T₂

8.653846154 = 769.85/T₂

T₂ = 769.85/8.653846154

T₂ = 88.96044444 = 89°C

What is the correct sequence of chemical transformations with the correct phases?

Answers

Answer:

1. Cu(s) 2. Cu(NO3)2 (aq) 3. Cu(OH)2 (s) 4. CuO (s) 5. CuSO4 (aq)  6. Cu(s)

Explanation:

Help guys
Please

Please help me if u know

Answers

Because they don’t have the same elements i guess, what is question 1?
They have different density

The table shows the rate of reaction for two unknown time intervals during a chemical change.

Reaction Rates
Time Intervals (s) Rate (M/s)
T1 1.8 x 10−6
T2 1.0 x 10−6

Which of the following is true for the two time intervals? (5 points)

Select one:
a. T1 is longer than T2, and the concentration of reactants at the end of T1 is lower than that of T2.
b. T1 is longer than T2, and the concentration of products at the end of T1 is lower than that of T2.
c. T1 is shorter than T2, and the concentration of reactants at the end of T1 is higher than that of T2.
d. T1 is shorter than T2, and the concentration of products at the end T1 is higher than that of T2.

Answers

Answer:

i think a is the right answer

2nd attempt
*
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See Periodic Table O See Hint
Calculate AEfor a system that absorbs 599,0 kJ of heat from its surroundings
and does 3510 kJ of work on its surroundings.

Answers

Answer:

-2911 kJ

Explanation:

Step 1: Given data

Heat absorbed by the system (Q): 599.0 kJ (By convention, when the systems absorbs heat, Q > 0)Work done by the system on the surroundings (W): -3510 kJ (By convention, when the systems does work on the surroundings, W < 0)

Step 2: Calculate the change in the internal energy (ΔE)

We will use the following expression.

ΔE = Q + W

ΔE = 599.0 kJ + (-3510 kJ) = -2911 kJ

help me brainly
A man washes clothes in a stream using a detergent that contains phosphorus. Which type of pollution is this?

Question 2 options:

toxic


sediment


nutrient


bacterial

Answers

I think nutrient, hope it’s right!

Answer:

bacterial or toxic please

Ammonium phosphate is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with liquid ammonia. Calculate the moles of ammonium phosphate produced by the reaction of of ammonia. Be sure your answer has a unit symbol, if necessary, and round it to significant digits.

Answers

The given question is incomplete. The complete question is:

Ammonium phosphate [tex](NH_4)_3PO_4[/tex] is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid [tex]H_3PO_4[/tex] with liquid ammonia. Calculate the moles of ammonium phosphate produced by the reaction of 1.7 mol of ammonia. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.  

Answer: 0.57 moles of ammonium phosphate are produced by the reaction of 1.7 moles of liquid ammonia

Explanation:

The balanced chemical equation is:

[tex]H_3PO_4+3NH_4OH\rightarrow (NH_4)_3PO_4+3H_2O[/tex]

According to stoichiometry:

3 moles of liquid ammonia [tex](NH_4OH)[/tex] produces = 1 mole of ammonium phosphate [tex](NH_4)_3PO_4[/tex]

Thus 1.7 moles of liquid ammonia [tex](NH_4OH)[/tex] produces = [tex]\frac{1}{3}\times 1.7=0.57[/tex] mole of ammonium phosphate [tex](NH_4)_3PO_4[/tex]

Thus 0.57 moles of ammonium phosphate are produced by the reaction of 1.7 moles of liquid ammonia

For the reaction shown, drsw the major(s) expected product.​

Answers

Answer:

2

Explanation:

Combustion Analysis of an unknown hydrocarbon resulted in the capture of 216.00 g of water vapor and 440.00 g of CO2. The total mass of the hydrocarbon before combustion was 144 g.

(1. How many moles of carbon dioxide are present after combustion?)

(2. What is the empirical formula for the unknown hydrocarbon?)

(3. How many water molecules does the water vapor trap capture?)

(4. The gram-formula mass for the unknown hydrocarbon was determined to be 72 g/mol. How many moles of the unknown hydrocarbon were present in the original sample?)

(5. infrared spectral analysis determines that the unknown hydrocarbon does NOT contain oxygen. How many moles of O2 are used in combusting the unknown sample?)

Answers

1: 10 mol CO2

2: C10H24

3: 12 mol H2O

4: 0.5 mol

5: 16 mol O2

The compound is C5H10.

From the information  available in the question;

Number of moles of carbon dioxide = 440.00 g/44 g/mol = 10 moles

Number of moles of water vapor = 216.00 g/18 g/mol = 12 moles

Mass of carbon = 10 moles × 12 g/mol = 120 g of carbon

Moles of hydrogen = 12 moles  × 2 g/mol = 24 g of hydrogen

Number of moles of carbon = 120 g/12 g/mol = 10 moles

Number of moles of hydrogen = 24 g/1 g/mol =24 moles

Divide through by the lowest number of moles =

C - 10/10   H - 24/10

C - 1          H - 2

The empirical formula is CH2

Molar mass of the compound = 72 g/mol

[12 + 2(1)]n = 72

14n = 72

n = 5

The compound is C5H10.

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cell and chromosome characteristics? ​

Answers

Answer:

hope the inserted image will help :)

Explanation:

Answer:  Both are centered inside the nucleus.

Explanation: The characteristics between cells and chromosomes are that they both are centered inside the nucleus (which is a cell). This characteristic applies to both plant and animal cells.

Which simple machine is best used to split apart an object

A. A screw

B. A lever

C. A wedge

D. A pulley

Answers

Answer:

its A screw :))) your welcome

A screw, hope that helps.;)

Without these we would not be able to bend our arms or legs. A. Levers B. Bones C.Joints

Answers

Answer:

Joints

Explanation:

Without joints we would not be able to bend our arms or legs. Hence option C is correct.

What is bending?

Bending is defined as the behavior of a thin structural element under an external load that is applied perpendicular to the element's longitudinal axis. Plants and their parts are thought to bend as a result of a flexure process in which the curvature of the plant part changes. The plant organs' collenchyma gives them flexibility and elasticity, preventing them from breaking when bent.

The force required to bend, straighten, and support joints is applied by muscles to the bones. Muscles act in pairs of flexors and extensors because they may pull on bones but not put them back into place. The extensor muscle relaxes and stretches as the flexor muscle contracts to bend the joint.

Thus, without joints we would not be able to bend our arms or legs. Hence option C is correct.

To learn more about bending, refer to the link below:

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A solution is made from 0.5 moles of sodium dichromate. If the volume of the solution is 1 Liter, what is the molarity of the solution
2 M
0.5 M
4 M
1 M

Answers

Answer:

4 M

Explanation:

See the steps and explanation in the picture

Advantages and disadvantages of using tidal energy instead of non-renewable energy sources.​

Answers

Advantages of using tidal energy:

-Environment-friendly

-A highly predictable energy source

-High energy density

-Operational and maintenance costs are low

-An inexhaustible source of energy

Disadvantages of using tidal energy:

-High tidal power plant construction costs.

-Negative influence on marine life forms.

-Location limits.

-The variable intensity of sea waves.

Please help!

Karl-Anthony is trying to plate gold onto his silver ring. He constructs an electrolyte cell using his ring as one of the electrodes. He runs this cell for 90.6 minutes at 213.8 mA. How many moles of electrons were transferred in this process?

Answers

Answer:

0.012 mole of electron

Explanation:

From the question given above, the following data were obtained:

Time (t) = 90.6 minutes

Current (I) = 213.8 mA

Number of mole of electrons =?

Next, we shall convert 90.6 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

90.6 mins = 90.6 × 60

90.6 mins = 5436 s

Next, we shall convert 213.8 mA to A. This can be obtained as follow:

1000 mA = 1 A

Therefore,

213.8 mA = 213.8 mA × 1 A / 1000 mA

213.8 mA = 0.2138 A

Next, we shall determine the quantity of electricity used in the process. This can be obtained as follow:

Time (t) = 5436 s

Current (I) = 0.2138 A

Quantity of electricity (Q) =?

Q = it

Q = 0.2138 × 5436

Q = 1162.2168 C

Next, the equation for the reaction.

Au⁺ + e —> Au

From the balanced equation above,

1 mole of electron was transferred.

Recall:

1 faraday = 96500 C = 1 e

Thus,

96500 C of electricity is needed to transfer 1 mole of electron.

Finally, we shall determine the number of mole electrons transferred by the application of 1162.2168 C of electricity. This can be obtained as follow:

96500 C of electricity is needed to transfer 1 mole of electron.

Therefore,

1162.2168 C of electricity will transfer = 1162.2168 / 96500 = 0.012 mole of electron

Thus, 0.012 mole of electron was transferred in the process.

Following are the calculation to the moles of electrons that transferred in the process:

Given

Current flows

time[tex]= 90.6\ min = 90.6 \times 60\ sec= 5436 \ sec\\\\[/tex]

For Step 1:

Calculating the Total charge flown in the given time:

For Step 2:

Charge on a single electron

So:

Following are the calculation to the charges of electrons:

Following are the calculation to the electrons transferred:

[tex]=\frac{(726.38\times 10^{19})}{ (6.023 \times 10^{23})}\\\\= 120.60\times 10^{-4}\ moles\\\\[/tex]

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Help plzz pick on the picture

Answers

The answer to this question would most definitely be the last one

Which equation represents neutralization?
(1 ) 6Li(s)+N 2 (g)=>2Li3N(s)(2) 2Mg(s)+O2(g)=>2MgO(s) (3) 2KOH(aq)+H2SO4(aq) =>K 2 SO 4 (aq)+2H 2 O(l)
(4) Pb(NO 3 ) 2 (aq)+K 2 CrO 4 (aq) => 2KNO 3 (aq)+PbCrO 4 (s)

Answers

Answer:

3) 2KOH(aq) + H2SO4(aq) ⇒ K2SO4(aq) + 2H2O(l)

Explanation:

KOH is a strong base and a H2SO4 is a strong acid. The two react in a neutralization reaction, producing a salt and water.

Consider this chemical equation:
2AgNO3(aq) + Cu(s) → Cu(NO3)2(aq) + 2Ag(s)
Which substances dissolve in solution? Select all
that apply.
AgNO3
Cu
Cu(NO3)2
Ag
Answer is:AgNO3 and Cu(NO3)2

Answers

Answer:

the answer is very correct as AgNO3 and Cu(NO3)2

Answer:

A,C

Explanation:

the person above me is correct

3. Which of the following describes the author's purpose in the text? R1.6
A.
to encourage students not to think about money when they're
choosing a degree or career to pursue
B. to stress the importance of viewing college as a way to develop jobs
skills, as well as determine what is important to you
C. to discourage students from pursuing careers in business, as people
are generally dissatisfied with their lives
D. to encourage students to pursue careers that help other people, as
they are usually the most enjoyable and meaningful

Answers

Answer:

B

Explanation:

I took the assessment

does anyone know the answer to this​

Answers

It’s Tetracarbon dioxide :)

What is the number of moles in 546 g strontium nitrite?

A. 0.388 mol
B. 2.58 mol
C. 329 mol
D. 3.04 mol

Answers

The answer is 2.58 mol

How many molecules of CO2 at standard temperature and pressure in 5.4 moles of CO2

Answers

Answer:

3.25×10²⁴ molecules.

Explanation:

From the question given above, the following data were obtained:

Number of mole of CO₂ = 5.4 moles

Number of molecules of CO₂ =?

The number of molecules of CO₂ in 5.4 moles can be obtained as follow:

From Avogadro's hypothesis,

1 mole of CO₂ = 6.02×10²³ molecules

Therefore,

5.4 moles of CO₂ = 5.4 × 6.02×10²³

5.4 moles of CO₂ = 3.25×10²⁴ molecules

Thus, 5.4 moles of CO₂ contains 3.25×10²⁴ molecules.

describe one similarity and one difference between amylopectin and glycogen?

Answers

Answer: The main difference between amylopectin and glycogen is that amylopectin is an insoluble form whereas glycogen is a soluble form. The 1,4-alpha glycosidic bonds form the linear chain of both amylopectin and glycogen while 1,6-alpha glycosidic bonds form the branches.

Explanation:

NEED A AWNSER ASAP PLEASE!!!!

Answers

Last one cuz it stay in the air for a while then swings making it kinetic

Answer:

2. the second one is the answer

Because it shows both potential and kinetic energy

If Jonathan went skateboarding from 4:00 PM to 4:30 PM and traveled 450 meters, what was his average speed?

Answers

20 m Increase by five

Which of the following would form a spontaneous reaction at 298 K?
O A. AH = 28 kJ/mol, AS = 0.109 kJ/(mol-K)
B. AH = 31 kJ/mol, AS = 0.093 kJ/(mol-K)
C. AH = 8.7 kJ/mol, AS = 0.008 kJ/(mol-K)
D. AH = 205 kJ/mol, AS = 0.210 kJ/(mol-K)

Answers

Answer:

A

∆H = 28 kJ/mol, ∆S = 0.109 kJ/(mol-k)

Explanation:

A P E X

The spontaneous reaction at 298 K is the one having

ΔH = 28 kJ/mol, ΔS = 0.109 kJ/(mol-K)

We know the formula of Gibb's free energy as-

ΔG = ΔH - TΔS

ΔG = 28 - (298 × 0.109)

ΔG = -4.48

If a reaction is spontaneous, change in Gibb's free energy is negative and change in entropy is positive.

Therefore, The spontaneous reaction at 298 K is the one having

ΔH = 28 kJ/mol, ΔS = 0.109 kJ/(mol-K)

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Select all of the following statements that are true. Multiple answers are possible
Cells are made of cells

All living things are made of cells

Cells are the smallest living thing.

Only prokaryotic organisms have cells

Answers

the statements that are true are all living things are made of cells & cells are the smallest living thing. hopes that helps!! :)
Other Questions
How many triangles can a polygon with 32 sides be sectioned into? brianlist anyone?!?!?! If your pet could walk what would the After the American Revolution, the newly formed United States realized that it lacked room to grow. The states created in the Declaration of Independence in 1776 were limited in size. As the population increased, more people were competing for the same amount of land. Consequently, land became more expensive, and overcrowding became an issue. The thirteen states were bordered by the Atlantic Ocean and the territories of other nations. If the United States was going to have a future, it needed to increase its territory.President Thomas Jefferson believed that for Americans to be virtuous and free, they needed to farm land. He wanted to expand westward to create more farmland. Jefferson also wanted to obtain the Port of New Orleans at the mouth of the Mississippi River so farmers could easily transport their goods. He facilitated the purchase of New Orleans and the rest of the French territory from France in 1803 for $15 million. This new land was called the Louisiana Territory and stretched partway across the continent. It was the first step in expanding the United States.The purchase of the Louisiana Territory led to a pattern of westward expansion through payment, negotiations, and conflict. The United States purchased Florida from Spain with the Florida Purchase Treaty of 1821. Instead of paying Spain a set amount, the United States would pay the $5 million Americans claimed were owed to them by Spain. After Texas declared independence from Mexico, it was annexed by the United States and became an official state in 1845. Another land controversy occurred between Great Britain and the United States, as both countries claimed the Oregon region. The dispute was settled in the 1846 Oregon Treaty, which separated the countries by the line of the 49th parallel. Mexico refused to let the United States buy California and New Mexico, so the two countries eventually went to war. Because the Americans won the war, the United States was able to buy lands in the Southwest in 1848. The United States paid Mexico $10 million for an area of land in the Southwest in the 1853 Gadsden Purchase, stretching its borders from sea to sea.According to information in the text feature, in what year did the United States officially obtain land with access to the Pacific Ocean? 1821 1845 1846 1848 The table shows the height of a softball that Hallie threw in the air. Is the relationship shown linear? Why or why not? Ignacio estudia hoy porque hay un examen el jueves. (cundo? por qu?) What type of voice is appropriate for an argument essay?first personsecond personshird person formalfourth person 1 less than the square of a number. PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!does the image best represent the north or the south and why? cite evidence from the image to justify your answer. What made India significant to European colonists?OA.It had a small native population.OB.It was geographically easy to defend.OC.It had access to valuable spices.ODIt was considered a new world. 1. In the poem, Invictus, what kind of soul does the speaker have? Answer in complete sentence and use the question in your answer for this, and all questions. Please help me.. Im not really good at math so please?? your gym membership cost $33 per month after an initial membership fee. you paid a total of $228 after 6 months. writer an equation that gives the cost as a function of the length of your gym membership (in months). find the total cost after 9 months Mr Maretti is making welcome bags What does Jake decide to do at the end of this episode?o eat a bowl of borschtO take a napO call the agencyo leave When a person bends a glow stick a small chamber inside it breaks releasing a substance that reacts with other substances inside a glow stick the reaction takes place causing the glow stick to glow. What type of energy transformation is this UGHH HELP ME PLSSS FOR EXTRA POINTS AND BRAINLEST which method between graph method and table method friendly use? Motivate your answer Evaluate each function.11) f(a) = 3a? + 3a; Find f(a 2) ASAP HELP TYYY A purse with a price of $58.45 has an 8% sales tax. What is the sales tax dollar amount? At 100F, a certain Insect chirps at a rate of 97 times per minute, and at 102F, they chirp 111 times per minute. Write an equation in slope-intercept form that represents the situation.