Many cigarette lighters contain liquid butane, C4H10, which has a ∆H°ƒ = –147.6 kJ/mol. Using enthalpies of formation, calculate the quantity of heat produced when 1.0 g of butane is completely combusted in air. (Write the equation for the process first)

Answers

Answer 1

For cigarette lighters containing liquid butane, C4H10, the quantity of heat produced  is mathematically given as

q= -49.2 KJ

What is the quantity of heat produced when 1.0 g of butane is completely combusted in air?

Generally, the equation for the Chemical reaction   is mathematically given as

C₄H₁₀(l) + 6.5 O₂(g)---->4 CO₂(g) + 5 H₂O(l)

Therefore

dH°r = .(-393.5 ) + 5.(-285.5] - [1.(-147.6 )+6.5.

dH°r = -2853.9 kJ/mol

In conclusion, No.of mole

Nm = 1g/58g/mol

Nm= 0.01724mol

Hence, Heat of combustion

q = dH°r x moles

q = -2853.9 ×0.01724

q= -49.2 KJ

Read more about Chemical reaction

https://brainly.com/question/16416932


Related Questions

What is the electrical conductivity of Copper and Glass?

Please help

Answers

Answer:

Table of Resistivity and Conductivity at 20°C

Material ρ (Ω•m) at 20 °C Resistivity σ (S/m) at 20 °C Conductivity

Deionized water 1.8×105 5.5×10−6

Glass 10×1010 to 10×1014 10−11 to 10−15

Explanation:

Table of Resistivity and Conductivity at 20°C

Material ρ (Ω•m) at 20 °C Resistivity σ (S/m) at 20 °C Conductivity

Deionized water 1.8×105 5.5×10−6

Glass 10×1010 to 10×1014 10−11 to 10−15

When the Northern Hemisphere is tilted ________the Sun, the sunlight is _________ direct than it is in the Southern Hemisphere. (Select all that apply.)

Group of answer choices


away from; more


toward; less


toward; more


away from; less

Answers

Answer:

away from, less

Explanation:

sun is further away from the northern hemisphere so receives less light

Name the following ketone:
o
CH3CCH3

Answers

Answer: the answer is A

Explanation:

just finished this on acellus

Acetone is the name of the following compound and can also be referred to as 2-propanone.

What is a ketone?

ketone, any of a class of organic compounds characterized by the presence of a carbonyl group in which the carbon atom is covalently bonded to an oxygen atom.

Acetone, an organic compound, is chemically described as [tex]CH_3COCH_3[/tex], and can also be referred to as 2-propanone.

Acetone is a hydrocarbon derivative, more specifically a ketone in its simplest form because of its particular functional group.

Hence, acetone is the name of the following compound and can also be referred to as 2-propanone.

Learn more about the ketone here:

https://brainly.com/question/4439718

#SPJ2

is mixing water and glue a chemical or physical change?

Answers

Answer:

physical

Explanation:

because it would still remain as a liquid. if you were to add borax or something to it, then it would be a chemical change.

Ammonia is a gas for which reliable analytical methods are available to determine its concentration in other gases. To measure flow in a natural-gas pipeline, pure ammonia gas is injected into the pipeline at a constant rate of 72.3 kg/min for 12 min. Five miles downstream from the injection point, the steady-state ammonia concentration is found to be 0.382 wt %. The gas upstream from the point of ammonia injection contains no measurable ammonia. How many kilograms of natural gas are flowing through the pipeline per hour?

Answers

amount of ammonia injected:

72.3 kg/min x 12 min = 867.6 kg

ammonia concentration = 0.382%

[tex]\tt 0.382\%=\dfrac{mass~amonia}{mass~ammonia+mass~natural~gas}\times 100\%\\\\0.00382=\dfrac{867.6}{867.6+mass~natural~gas}\\\\mass~natural~gas=226,252.88~kg/12min=1131264.4~kg/h[/tex]

calculate the concentration of HCL

Answers

to find:

the concentration of HCI

solution:

[tex]mass \: formula \: of \: hci = 1 + 35.5[/tex]

[tex] = 36.5[/tex]

[tex]mass = relative \: formula \: mass \times amount[/tex]

[tex] = 36.5 \times 0.125[/tex]

[tex] = 4.56g | {dm}^{3} [/tex]

hence, the concentration of HCI is 4.56g/dm3.

Give a name for a straight chain alkane with nine carbons ​

Answers

Answer:

n-nonane

Explanation:

please consider as brainlest if helpful

the only solid figure that has two circular bases is a

Answers

Cylinder

Cylinder A cylinder is a solid figure with two parallel congruent circular bases.

Answer:

Cylinder

Explanation:

A cylinder is a solid figure with two parallel congruent circular bases.

A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.12 C. What is the solution’s molality?

Answers

Answer:

2.19m

Explanation:

quizlet

•••“*Pls Help Me*”•••

Answers

Answer:

C this is so ez bb

Explanation:

PLEASE QUICKLY HELP:)

which entry-level job would give you the best experience for a career in the lodging sector?

Choose one answer correctly!

A. Hostess
B. Réservation agent
C. Sever
D. Tour guide​

Answers

Answer:

i think Hostess but id K a lodging sector is an The hospitality industry encompasses a wide range of services and activities such as lodging, restaurants, food services, and convention centers. The lodging sector consists of hotels, motels, resorts, and bed and breakfasts.

Explanation:

What is the molarity of a solution made by adding 1.565 moles of
PbNO3 to 0.500 L?
300. M
31.3 M
3.13 M
1.56 M

Answers

Answer:

3.13M

Explanation:

Using the Molaitry equation ( M = n/v ) just plug numbers in and solve.

Help, will mark brainiest if the answer is correct(explanation is preferred but not needed).

Answers

Answer:

See graph below

Explanation:

 For this graph of acid-base (strong) the equivalence is just ph = 7

Which types of particles are involved in a fission reaction?

A neutral neutron strikes a large neutral nucleus.

A positive proton strikes a large positive nucleus.

A neutral neutron strikes a large positive nucleus.

A positive proton strikes a large neutral nucleus.

Answers

The first one a neutral neutron strikes a large neutral nucleus

What is the pH of
0.000519 M NaOH?

Answers

The pH of the sodium hydroxide (NaOH) solution at the given concentration of 0.000519 M is determined as 10.72.

What is pH of solution?

The pH of a solution is defined as the logarithm of the reciprocal of the hydrogen ion concentration  [H+] of the given solution.

Concentration of the basic solution, [OH⁻] = 0.000519

pOH = -log[OH⁻]

pOH = -log[0.000519]

pOH = 3.28

pH of the solution

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 3.28

pH = 10.72

Thus, the pH of the sodium hydroxide (NaOH) solution at the given concentration of 0.000519 M is determined as 10.72.

Learn more about pH here: https://brainly.com/question/26424076

Which mixture would be easiest to separate based on the size of the particles?
A.
oil and water
B.
vinegar and water
C.
sand and gravel
D.
sugar and water

Answers

Answer:

i believe sand and gravel because you can sift the sand

Explanation:

If the actual yield for a substance is 39.487g but the theoretical yield is 38.000g, what is
the percent yield?
a. 2%
b. 96%
c. 50%
d. 104%

Answers

Answer:

b. 96%

Explanation:

QUESTION 4
Which of the following is a weak acid?
HBr
H2SO4
HNO3
HNO2
KOH

Answers

Answer:

HNO2 I'm pretty sure is the correct answer

how dose the air change in a hot air balloon

Answers

Answer:

The air warms up, causing it to become lighter than the cold air outside of it.

Determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76 × 103 kJ/mol. A. 113 nm B. 885 nm C. 68.0 nm D. 147 nm E. 387 nm

Answers

Answer:

The wavelength of light is 68 nm.

Explanation:

Given data:

Binding energy of electron = 176 × 10³ Kj/ mol or (1.76× 10⁶ j/mol)

Wavelength of light require to remove the electron = ?

calculate, a can of chicken broth contains 450 mg of sodium chloride in 240.0g of broth. What is the percent by mass of sodium chloride in the broth?

Answers

Answer:

The percent by mass of sodium chloride in the broth is 0.1875 %

Explanation:

Our first step is transforming the sodium chloride figure from mg to g

450mg x 1g/1000 mg= 0.45g

Now, we must calculate the percentage by using the following formula:

0.45g / 240g x 100= 0.1875%

Henceforth, we can conclude that the percentage by mass of sodium chloride in the broth is 0.1875%

The per cent by mass of sodium chloride in the broth is 0.1875 %

What is per cent by mass?

The mass per cent of a component of a compound is the percentage ratio of the mass of the component by the total mass of the compound. The formula is mass per cent = (mass of component / total mass of compound) × 100.

Given data:

Mass of sodium chloride =450 mg = 0.45g

Now, we must calculate the percentage by using the following formula:

[tex]\frac{0.45gX 100}{240g }[/tex]

= 0.1875%

Hence, we can conclude that the percentage by mass of sodium chloride in the broth is 0.1875%

Learn more about the per cent by mass here:

https://brainly.com/question/20460129

#SPJ2

A manometer measures 450 torr of pressure in a container with 0.500-L sample of carbon dioxide, CO2. The gas is compressed to a volume of 0.100 L. What is the new pressure reading in the manometer?

Answers

Let's see

Apply boyles law

P1V1=P2V2450(0.5)=0.1P_2225=0.1P_2P_2=2250Torr

...................................................

Answers

Explanation:

I honestly don't understand why you post useless questiond

Question 4 of 15
The types of radiation produced by alpha, beta, and gamma decay differ in
many ways. Which characteristic do they all have in common?
A. The ability to treat cancer
B. The ability to cause cancer
C. The ability to trace the movement of chemicals
D. The ability to damage human tissue

Answers

Answer:

D. The ability to damage human tissue

please give me brainliest.

Determine the empirical formula of a compound containing 48.38 grams of carbon, 8.12 grams of hydrogen, and 53.5 grams of oxygen

Answers

As with most stoichiometry problems, it is necessary to work in moles. The ratio of the moles of each element will provide the ratio of the atoms of each element.

Get the mass of each element by assuming a certain overall mass for the sample (100 g is a good mass to assume when working with percentages).

Remeber that percentages are a ratio multiplied by 100. You must convert percentages back to their decimal value before working with them.

(.4838) (100 g) = 48.38 g C

(.0812 ) (100 g) = 8.12 g H

(.5350) (100 g) = 53.38 g O

Convert the mass of each element to moles of each element using the atomic masses.

(48.38 g C) (1 mol/ 12.10 g C) = 4.028 mol C

(8.12 g H) (1 mol/ 1.008 g H) = 8.056 mol H

(53.38 g O) (1 mol/ 16.00 g O) = 3.336 mol O

Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles.

Use the mole ratio to write the empirical formula.

Which characteristic of an outermost shell is required for an atom to not need any electrons?

1 electron
more than 2 electrons
more than 21 electrons
a full

Answers

Answer:

A full.

Explanation:

An electron needs to have a full octet do not need any more electrons. So the correct option is D.

What is a valence shell?

The s and p electrons in the outermost shell are valence electrons. Core electrons are those found in the inner shell. Valence electrons are little subatomic particles that we come across as we examine and investigate an element's atom. We can trace the valence electrons and forecast the sorts of bonds with the aid of Lewis structures.

The majority of valence electrons are negatively charged particles, and they are all grouped in various orbitals or shells. Additionally, these electrons are in charge of how atoms interact with one another and create chemical bonds.

However, not every electron belongs to an atom. A chemical bond or molecule can only be created by the electrons that are found in the outermost shell. Valence electrons are the name given to this sort of electron.

Therefore the correct option is D.

Read more about valency, here

https://brainly.com/question/12717954

#SPJ2

1) Define water gas
2) The skuLL is divided into two parts name them​

Answers

• a fuel gas consisting mainly of carbon monoxide and hydrogen, made by passing steam over incandescent coke

• the cranium and the mandible.

hope it helps...!!!

What is the process of photosynthesis

Answers

Answer:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar

a pharmaceutical company wants to extract an ingredient from pomace supplied by a certain food processing plant. which process is the most efficient with the lowest environmental impact

A. Catalyst extraction
B. High pressure, high temperature water extraction
C. Organic solvent extraction
D. Enzyme extraction

Answers

Answer: high pressure, high temperature water extraction

Explanation:

Answer:

C). high pressure, high temperature water extraction

Explanation:

Which of these activities would a Forensic toxicologist NOT preform?

a. Determine the chemical
makeup of alcohol

b. Determine if drugs played a role in an accident.

c . Determine if drugs played a role in a perpetrator actions.

d. Determine if a person died of natural causes or a poison.

Answers

Answer:

A

Explanation:

because I know it from doing a test

Other Questions
When searching using cinahl, what is the main advantage of using a cinahl heading rather than a text word or phrase?. Identify the polynomial that is the difference of two squares.A. 25m2 16nB. 49m2 81n4C. 36m2 8n8D. 9m2 5n6 help with this questions please!math A pan from the oven is sitting out to cool to room temperature. If the temperature difference between the pan and room temperature is currently 197C and is decreasing by 6% every minute, how much above room temperature will the pan be in 15 minutes? If necessary, round your answer to the nearest tenth. Is this statement true or false? with the exception of israel, agriculture in the region remains undeveloped. true false An individual heterozygous for cystic fibrosis (i.e., no disease sign) ____________________. A. cannot have children with cystic fibrosis B. is a carrier of cystic fibrosis C. cannot reproduce D. has cystic fibrosis Information should be________to ensure more than one source provides the same factual information. a. repeated c. cross-lined b. cross-examined d. cross-checked please select the best answer from the choices provided a b c d A dryer and washer cost $936 combined the washer cost $86 more than the dryer what is the cost of the dryer Please help,i really dont understand Some people say that the official unemployment rate isn't the best indicator ofactual unemployment in the economy becauseSelect one:O the unemployment rate is greater than the natural unemployment rateO the official rate doesn't include people who have given up looking forworkO part time workers are considered unemployedO full employment is greater than the labor force What does the national park service manage? memorials wildlife refuges ecosystems endangered species 100 POINTS!!Plan and write a short story1. Fill in your own descriptions of the plot, setting, problem, characters, climax, and outcome of the short story you will write.Note: Submit part one of this project before doing part two.2. Write your short story from the notes you made. After writing the rough draft, lay it aside for a little while and then edit and improve your story until it is final draft quality. Your finished short story should be at least 500 words long. Help please please please! How many years does it take for pluto to orbit the sun. Kristen made a floor plan for her dog's kennel. The floor plan is shown below.Note: Figure is not drawn to scale.If a = 56 in, b = 22 in, c = 73 in, and d = 25 in, what is the perimeter of the floor plan? A. 346 in B. 240 in C. 302 in D. 256 in guys plsshelp meee!!!!! What is the process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell?. The stratis command that will display the block devices included in pool is ____________. Which event started World War I? The average resting heart rate is betweenA. 80-90 bpmB. 90-100 bpmC. 60-70 bpmD. 70-75 bpm