Answers
The balanced combustion reaction is C₅H₈ + 7O₂ → 5CO₂ + 4H₂O
Hence, Option (B) is correct answer.
What is Combustion reaction ?Combustion reaction is a type of chemical reaction between the hydrocarbon and oxygen.
CₓHₙ + O₂ → H₂O + CO₂
What is Balanced Chemical Equation ?The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.
The given reaction is C₅H₈ + O₂ → CO₂ + H₂O
Now we have to balanced this reaction
Reactant side Product side
C = 5 C = 1
H = 8 H = 2
O = 2 O = 3
In the reactant side there are 5 C atoms and in product side there are 1 C atom. Multiply by 5 in the product side.
C₅H₈ + O₂ → 5CO₂ + H₂O
Reactant side Product side
C = 5 C = 5
H = 8 H = 2
O = 2 O = 11
In the reactant side there are 8 H atoms and in product side there are 2 H atoms. Multiply by 4 in the product side.
C₅H₈ + O₂ → 5CO₂ + 4H₂O
Reactant side Product side
C = 5 C = 5
H = 8 H = 8
O = 2 O = 14
In the reactant side there are 2 O atoms and in product side there are 14 O atoms. Multiply by 7 in the product side.
C₅H₈ + 7O₂ → 5CO₂ + 4H₂O
Reactant side Product side
C = 5 C = 5
H = 8 H = 8
O = 14 O = 14
Now the equation is balanced all the atoms of reactant side and product side are same.
Thus from above conclusion we can say that The balanced combustion reaction is C₅H₈ + 7O₂ → 5CO₂ + 4H₂O
Hence, Option (B) is correct answer.
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Related Questions
The image above shows a wave
Answers
Answer:
I need an image to help you as best as I can. Hopefully, this gets your attention so I can try to help!
Explanation:
A cabbage p h indicator color key. entries are 0 to 2, bright red; 3 to 4, pink; 5 to 6, purple; 7, dark violet; 8 to 9, blue; 10 to 11, bright green; 12 to 13, lighter green. why would you use a solution, such as a cabbage ph indicator, to measure the ph of household items? to see if food went bad to test the safety of water to make sure conditions are safe to use up old cabbage
Answers
We use a solution, such as a cabbage ph indicator, to measure the ph of household items :
to see if food went badto test the safety of waterto make sure conditions are safeCabbage ph indicator:Anthocyanin, a water-soluble pigment found in red cabbage, can change color when combined with an acid or a basic. The color changes to red in situations with a pH under 7, and to bluish-green in alkaline (basic) environments with a pH above 7. Cabbage isn't known to cause acid reflux, but plenty of other common foods are.
Anthocyanin turns pink when it interacts with the hydronium ions in an acid, and blue or green when it interacts with the hydroxide ions in a base. Because it may inform us if a substance is acidic or basic by changing color, cabbage juice is referred to as a pH indicator.
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Student exploitation: electron configuration
1.Elvis Perkins a Rather shy fellow, is getting on the bus shown at the right. Which seat do you think he will probably sit in mark this Seat with an “E”?
2. Marta Warren Gets on the bus after Elvis. She is tired after a long day at work where do you think she will sit mark the seat with an “M”?
Answers
Answer:
1. He will sit in the back where the other person is not sitting. Second column, fourth row.
2. Marta will sit in the front where it is not far. First column, first row.
Explanation:
Elvis being a shy individual and coming in first will seat to the left of the empty seat at the back while Martha who is tired will seat on left position on the first row
The choice of Elvis position would be determined by his shy attitude, hence, he will like to seat alone. Therefore, the empty seat at the back would favor Elvis. As for Martha, her choice of seat would be where he'll get less disturbance and also prefer a position to rest. Since she's tired, she'll find it difficult to walk to the back seat. Hence, the left position on the first row.Learn more :https://brainly.com/question/20654056
WILL GIVE BRAINLIEST
Which model provides more information-a chemical formula or a sketch of the molecule
like in the structural formula? Explain your reasoning.
Answers
Answer:
Explanation
:Both b/c a chemical formula tells you how many and a sketch formula shows how they are bonded together.
Molecular formulas show how many atoms of each element one molecule of a compound contains. Note: Ionic compounds are generally crystalline solids with high melting points. Other compounds, however, have very different properties.
Which element has the largest atomic radius?
A O
B) Cs
C Ba
D)Br
Answers
Consider a wooden chair and a balloon. What do these two
objects always have in common?
A.Both are made of the same number of atoms.
B.Both have the same mass number.
C.Both are made of the same kind of atom.
D.Both are made of atoms.
Answers
Answer:
D)
Explanation:
It is the most realistic
Perform two titrations, the first using methyl orange as an indicator and the second using phenolphthalein as an indicator. Record the volume required to reach a color change with each indicator: Volume NaOH (methyl orange): 2. 0 mL Volume NaOH (phenolphthalein): 24. 3 mL Why did you get such different results with each indicator
Answers
Substances called indicators are those whose solutions change color as the pH changes. We refer to these as acid-base indicators.
The conjugate base or acid versions of these typically weak acids or bases have various hues because of variations in their absorption spectra.
The H+ ion's dissociation from the pH indicator itself is what changes the hue of the indicator. Remember that weak acids in addition to natural colours are used as pH indicators. The solution changes hue as a result of the weak acid indicator dissociating.
As indicators, phenolphthalein and methyl orange are used. Methyl orange produces a red color in acidic solutions but a yellow color in basic solutions. Phenolphthalein is colorless in acidic solution but turns pink in basic solution.
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the ph of a 1.25 x 10 - 3 m naoh solution is select one: a. 11.10 b. 7.00 c. 2.90 d. 3.10
Answers
The pH of a 1.25 x 10^-3 M NaOH solution is approximately 9.81. The given options do not include the correct answer for the pH of a 1.25 x 10^-3 M NaOH solution.
A pH scale is used to calculate how acidic or basic a solution is.
In this question, we are given the molarity of a sodium hydroxide (NaOH) solution and we need to calculate its pH.
The formula for calculating pH is:
pH = -log[H+],
In the context of the pH calculation, [H+] represents the molar concentration of hydrogen ions present in the solution.
For a basic solution like NaOH, we can use the formula:
[OH-] = Kw / [H+],
where Kw is the ionization constant for water, which is 1 x 10^-14 at 25°C.
We can then use the relationship [OH-] x [H+] = Kw to calculate [H+] and then use the pH formula to calculate pH.
Molarity of NaOH solution = 1.25 x 10^-3 M
First, we need to calculate the hydroxide ion concentration ([OH-]) using the formula:
[OH-] = Kw / [H+]
[OH-] = 1 x 10^-14 / (1.25 x 10^-3)
[OH-] = 8 x 10^-12 M
Next, we can use the relationship [OH-] x [H+] = Kw to calculate [H+]:
8 x 10^-12 x [H+] = 1 x 10^-14
[H+] = 1.25 x 10^-3 M / 8 x 10^-12
[H+] = 1.56 x 10^-10 M
Now that we have the hydrogen ion concentration, we can use the pH formula to calculate pH:
pH = -log[H+]
pH = -log(1.56 x 10^-10)
pH = 9.81
Therefore, the pH of a 1.25 x 10^-3 M NaOH solution is approximately 9.81. The given options do not include the correct answer for the pH of a 1.25 x 10^-3 M NaOH solution.
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Hy would giving synthetic insulin to people with type 1 diabetes restore their glucose homeostasis?
Answers
Synthetic insulin for people with type 1 diabetes restores their glucose homeostasis by converting glucose into glycogen.
Homeostasis is disrupted, it should be controlled or a sickness/sickness may additionally end result. Our body systems paintings collectively to preserve balance. If that balance is shifted or disrupted and homeostasis isn't maintained, the results may not permit the normal functioning of the organism.
Every other hormone glucagon, will increase the concentration of glucose inside the blood and breaks glycogen into glucose whilst the blood sugar stage falls. Any disruption in their characteristic disturbs the glucose homeostasis in the body and causes problems like diabetes.
Once the frame temperature returns to normal, bad remarks will cause the reaction to cease. This sequence of stimulus-receptor-signal-reaction is used for the duration of the body to preserve homeostasis.
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Match the K’eq values with the appropriate delta G°’ values. Define each as exergonic, endergonic, or at equilibrium.
K'eq a. 1 b. 10^-5 c. 10^4 d. 10² e. 10^-1 AG°' (kJ/mol)
i. 28.53
ii. -11.42
iii. 5.69 iv. 0
v. -22.84
Answers
Exergonic: Reactions with negative delta G°’ values are exergonic reactions that release free energy.Exergonic means that the reaction will occur spontaneously. The value of delta G°’ is less than zero.
Endergonic: When the delta G°’ value is positive, the reaction is endergonic. These are reactions that need to be powered by an external force to occur.
At equilibrium: When delta G°’ = 0, the reaction is at equilibrium. The forward and reverse reactions occur at the same rate, and the concentrations of reactants and products do not change. Thus, the reaction is at equilibrium.
Here is how the K’eq values should be matched with the appropriate delta G°’ values:
K'eq a. 1 : 0kJ/mol b. 10⁻⁵ : 22.84 kJ/mol c. 10⁴ : -28.53 kJ/mol d. 10² : -5.69 kJ/mol e. 10⁻¹ : 11.42 kJ/mol AG°' (kJ/mol)
Therefore, the correct match for K’eq values with the appropriate delta G°’ values are as follows:
K'eq = 10⁴ corresponds to delta G°’ = -28.53 kJ/mol, which is exergonic.
K'eq = 10⁻⁵ corresponds to delta G°’ = 22.84 kJ/mol, which is endergonic.
K'eq = 10² corresponds to delta G°’ = -5.69 kJ/mol, which is exergonic.
K'eq = 1 corresponds to delta G°’ = 0 kJ/mol, which is at equilibrium.
K'eq = 10⁻¹ corresponds to delta G°’ = 11.42 kJ/mol, which is endergonic.
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For a light with a wavelength of 680 nm, how much is the energy contained in one mole photons of the same light
Answers
The energy contained in one mole of photons of light with a wavelength of 680 nm is 1.76 x 10^5 J/mol.
To calculate the energy contained in one mole photons of light with a wavelength of 680 nm, we need to use the following formula:
E = hc/λ
where E is the energy of one photon, h is Planck's constant (6.626 x 10^-34 J s), c is the speed of light (2.998 x 10^8 m/s), and λ is the wavelength of the light (680 nm or 6.8 x 10^-7 m).
First, let's calculate the energy of one photon:
E = hc/λ
E = (6.626 x 10^-34 J s) x (2.998 x 10^8 m/s) / (6.8 x 10^-7 m)
E = 2.93 x 10^-19 J
This means that one photon of light with a wavelength of 680 nm contains 2.93 x 10^-19 J of energy.
Now, let's calculate the energy contained in one mole of photons:
To convert from energy per photon to energy per mole of photons, we need to multiply by Avogadro's number (6.022 x 10^23 photons/mol):
Energy per mole = (2.93 x 10^-19 J/photon) x (6.022 x 10^23 photons/mol)
Energy per mole = 1.76 x 10^5 J/mol
Therefore, the energy contained in one mole of photons of light with a wavelength of 680 nm is 1.76 x 10^5 J/mol.
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A sample of ground beef contains 18. 9% protein and 21. 4% fat both by mass. How many kilocalories are in 125g of the ground beef? assume all kilocalories come from, protein and fat, and that the sample contains only protein, fat, and water
Answers
In a sample of ground beef, there were 18.9% protein and 21.4% fat, both expressed in mass. Therefore, 125g of ground beef has 147.5 kilocalories.
What do calories mean?The now-defunct kinetic theory of heat served as the basis for the calorie, a unit of energy. For historical reasons, the term "calorie" has two main definitions that are often employed.
Originally, the amount of heat needed to raise the temperature of one kg of water by one degree Celsius was referred to as a large calorie, dinner calorie, dietary nutrient, and kilo calorie (or one kelvin). A minuscule calorie or tiny calorie is the term used to describe the quantity of heat needed to produce the same increase in one kilogram of water.
The needed number of calories for ground beef is m.
protein in it = .18m
fat in it = .21m
1 gram of protein gives 4 cals .
1 gram of fat gives 9 cals .
4 x .18m + 9 x .21m = 350
m = 147.5kilocalories
Therefore, 125g of ground beef has 147.5 kilocalories.
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Can you please help resolve and explain?
Answers
The Ka of an acid indicates how strong this acid is. This means that greater acidity constant Ka corresponds to stronger acids, and lower Ka corresponds to weakest acids. I the example the acetic acid (CH3COOH) has an acidity constant 6 order of magnitude greater than the HCO3- there fore acetic acid is stronger than HCO3-
What is the theoretical yield of Fe (molar mass = 55. 85 g/mol) if 2. 00 mol of Fe2O3 is reacted with 4. 00 mol of C according to the balanced equation: Fe2O3(s) + 3 C(s) + 2 Fe(s) + 3 CO(g)
Answers
In this process, 149 g of Fe should theoretically be produced.
The balanced chemical equation shows that one mole of Fe2O3 reacts with three moles of C to produce two moles of Fe and three moles of CO. Therefore, the mole ratio of Fe2O3 to Fe is 1:1.
Using the given information, we know that 2.00 mol of Fe2O3 is reacted with 4.00 mol of C. We can determine the limiting reactant by comparing the mole ratios of Fe2O3 and C required for the reaction. Since Fe2O3 and C have a mole ratio of 1:3 in the balanced equation, we can see that only 1.33 mol of C (4.00 mol/3) is required to react with 2.00 mol of Fe2O3. Therefore, C is the limiting reactant.
To determine the theoretical yield of Fe, we need to first calculate the amount of Fe that can be produced from 4.00 mol of C. Using the mole ratio of Fe to C in the balanced equation, we can see that 4.00 mol of C can produce:
2 mol Fe / 3 mol C x 4.00 mol C = 2.67 mol Fe
Finally, we can calculate the theoretical yield of Fe by multiplying the amount of Fe that can be produced (2.67 mol) by its molar mass (55.85 g/mol):
Theoretical yield of Fe = 2.67 mol x 55.85 g/mol = 149 g
Therefore, the theoretical yield of Fe in this reaction is 149 g.
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an alloy is a mixture of elements that has metallic properties.
Answers
True. An alloy is a solid solution consisting of two or more metallic elements, or a metallic element and a non-metallic element.
The properties of an alloy are usually different from those of its constituent elements. The reason for this is that the atoms of different elements in an alloy interact with each other differently than they would if they were in their pure elemental form. This interaction can lead to changes in the electronic and crystal structure of the alloy, which in turn can affect its physical and chemical properties. Some common examples of alloys include brass (copper and zinc), stainless steel (iron, chromium, and nickel), and bronze (copper and tin).
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Complete question:
An alloy is a mixture of elements that has metallic properties. True or False
difference between compound and element
Answers
Answer:
An element is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.
Explanation:
I hope it helped you
Predict the polarity of 6 real molecules (O2, HF, H2O, NH3, CF4, CH3F). First, draw the
molecules and any bond dipoles. Then draw any molecular dipoles. Explain your
reasoning before you check your predictions with the simulation.
Answers
Carbon dioxide,Ammonia,Oxygen,Water,Hydrogen fluoride,Nitrogen are the polarity of 6 real molecules
What are the molecular polarity?Polar molecules are those that possess regions of positive and negative charge. Water is an example of a polar material. The type of bonds it has, when coupled with its shape, gives one end of the molecule a slight positive charge (the hydrogen end) and the other a slight negative charge (the oxygen end).Like bonds, molecules can also be polar. In a polar molecule, electron density is unevenly distributed throughout the molecule, resulting in regions of partial negative charge and regions of partial positive charge.Whether a molecule is polar or nonpolar is a matter of its geometry. If one end of the molecule has a positive charge while the other end has a negative charge, the molecule is polar. If a charge is evenly distributed around a central atom, the molecule is nonpolar.To learn more about molecular polarity refers to:
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11) How many significant figures would be in your correctly rounded
answer: 230 x 4.88 X.0643*
Is it 1,2,3,4?
Answers
Answer:
2
Explanation:
Unfortunately, despite the careful measurements of the last two numbers, the first only tells us a measurement in the tens is accurate. The zero is a placeholder. If the numbner were written 230.0, it would have 4 sig figs, but the number as written only has two sig figs.
What type of galaxy is pictured?
A.) elliptical
B.) irregular
C.) lens
D.) spiral
Answers
In which state of matter does heat travel fastest and slowest?
Answers
Answer:
Heat travels faster in solids.
Heat travels slower in gases.
Explanation:
The state of matter in which heat travels in fastest way is solid and in gaseous state heat travels in slowest way.
What is heat transfer?Heat transfer is a process in which heat can travel from one body to another body or from high temperature to low temperature.
In solid state heat will travel in the fastest way because molecules are arranged very close to each other and heat will travel through conduction process. And in gaseous state heat will travel with slowest way as molecules are arranged in very distance.
Hence in solid, heat travels in fastest way and in gases heat travels in slowest way.
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When menthol (CH3OH) undergoes complete combustion in the presence of oxygen (O2), the products are carbon dioxide (CO2) and water (H2O). The reaction is shown below. __CH3OH + __O2 -> __CO2+ __H2O Which of the following choices lists the coefficients that would correctly balance the equation? a. 2,3,2,4 b. 1,2,1,2 c. 2,2,2,3 d. 1,1,1,1
Answers
The balanced chemical equation for the combustion of menthol in the presence of oxygen is shown below.CH\(_{3}\)OH + 1.5O\(^{2}\) → CO\(^{2}\) + 2H\(^{2}\)O
The balanced equation for the combustion of menthol in the presence of oxygen shows that the coefficients required to balance the equation are 1, 1.5, 1, and 2. However, since the number of moles of oxygen is not a whole number, we can multiply the entire equation by 2 to get rid of the fraction as shown below.
2CH\(_{3}\)OH + 3O\(^{2}\) → 2CO\(^{2}\) + 4H\(^{2}\)O
Thus, the correct choice that lists the coefficients that would balance the equation is (a) 2, 3, 2, 4.
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Answer question number 17. The question is in the image.
Answers
Answer
Alkanes
Explanation
The CH3CH2CH2CH3, it falls under a group
\(C_nH_{2n+2}\)So if we can draw it, it will look like this,
This structure only has single bonds
Therefore the homologous series it falls under is Alkanes
When liquid water evaporates to gaseous water
1)the water releases energy to the surroundings.
2)particles of hydrogen and oxygen recombine to form H20.
3)the water particles are arranged in an orderly pattern.
4)the water absorbs energy from the surroundings.
Answers
Answer: liquid water 2
Explanation:
Isotope problem help me
Answers
Answer:
59 Sc 0
21
tiene numero atomico 21, porque es neutro, y tiene numero masico 59 porque 21 + 28 =59
invented by Bernard Launy and Jeremie Metz, and identify the flaws in the system in terms of energy inputs and outputs.
Answers
Invented by Bernard Launy and Jeremie Metz, flaws in the system in terms of energy inputs and outputs is the overbalanced wheel in which spokes are attached
Energy is the ability to do work to cause changes in matter
The overbalanced wheel perpetual motion machine is one of the most commonly proposed perpetual motion machine designed and wheel is designed to turn clockwise just after the weighted spoke reaches the top of the wheel and the spoke flip outward to the right exerting the force downward toward the ground and some energy will be lost from friction as the mechanism rub on the inner spoke and more energy will be lost when it transferred into sound and thermal energy
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Fill in the missing piece of the table
Answers
Answer: The final volume \(V_2\) is 263.09 ml
Explanation:
To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)
where,
\(V_1\text{ and }T_1\) are the initial volume and temperature of the gas.
\(V_2\text{ and }T_2\) are the final volume and temperature of the gas.
We are given:
\(V_1=156ml\\T_1=215^oC=(215+273)K=488K\\V_2=?\\T_2=550^0C=(550+273)K=823K\)
Putting values in above equation, we get:
\(\frac{156}{488}=\frac{V_2}{823}\\\\V_2=263.09ml\)
Thus final volume \(V_2\) is 263.09 ml
An arc subtends a central angle measuring 3pi/2 radians. What fraction of the circumference is this arc? of the circumference
Answers
Answer:
3/4
Explanation:
Answer:
3/4
Explanation:
Got it right on Khan Academy
Brainlest if Correct
Hey guys, about to submit my draft for business and chemistry.
What are some things I can do to spice it up and make it better (little adjustments) that can have a big impact when the teacher is reading it?
Answers
Answer:
so u can put on hot sauce to spice it up
and give it to ur teacher
It's fruitfull to add some more information and some acquired knowledge...
Hope it is helpful !
A gas has a volume of 250.0 liters at 17.0 °C and 3.00 atm of pressure. what volume must the gas be increased for the gas to be at STP conditions?
Answers
Answer:
0.706 L (Liters)
Explanation:
P1V1 = P2 V2 3 atm 250.0 mL = 1 atm X
T1 T2 290 K 273 K
706 mL = X
According to the question,
Pressure,
Initial, \(P_1 = 3 \ atm\)Final, \(P_2 = 1 \ atm\)Temperature,
Initial, \(T_1 = 17^{\circ} C\) or, \(290 \ K\)Final, \(T_2 = 273 \ K\)Volume,
Initial, \(V_1 = 250 \ L\)Final, \(V_2 = \ ?\)By using the Boyl's and Charl's combination law, we get
→ \(\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}\)
or,
→ \(V_2 = \frac{P_1 V_1 T_2}{T_1 P_2}\)
By putting the values, we get
→ \(= \frac{3\times 250\times 273}{290\times 1}\)
→ \(= 706 \ L\)
Thus the aforementioned answer is right.
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Pre-lab information
purpose plan an investigation to explore the relationship between properties of substances and the electrical forces within those substances. time approximately 50 minutes question what can properties of substances tell us about the electrical forces within those substances? summary in this activity, you will plan and conduct an investigation to compare a single property across several substances. you must select a measurable property, such as boiling point or surface tension. after your investigation, you will compare the results and use your data to make inferences about the strength of the electrical forces in each substance you tested.
Answers
The purpose of this pre-lab activity is to design and carry out an investigation to examine the correlation between the properties of substances and the electrical forces within them.
The main objective of this pre-lab activity is to explore the relationship between the properties of substances and the electrical forces within those substances. To achieve this, students will need to plan and conduct an investigation where they compare a single property across different substances.
This property could be something like boiling point or surface tension, as long as it is a measurable characteristic. By collecting data on the chosen property for each substance and analyzing the results, students will be able to make inferences about the strength of the electrical forces present in each substance.
This investigation allows students to understand how different properties of substances can provide insights into the underlying electrical forces that govern their behaviour. It provides a hands-on opportunity to apply scientific methods and draw conclusions based on empirical evidence. The expected time for completing this activity is approximately 50 minutes.
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