Answers
Answer:
C8H18(g) + 12.5O2(g) -> __8__CO2(g) + 9H2O(g) + heat
CH4(g) + _2___O2(g) -> ____CO2(g) + _2___H2O(g) + heat
C3H8(g) + _5___O2(g) -> _3___CO2(g) + __4__H2O(g) + heat
2C6H6(g) + __15__O2(g) -> __12__CO2(g) + __6__H2O(g) + heat
Explanation:
I hope it helps!
Fossil fuels are natural energy resources formed from the remains of ancient plants and organisms, such as coal, oil, and natural gas, which are burned to release energy.
Balanced reactions are as follows:
C₈H₁₈ (g) + 12.5O₂ (g) → 8CO₂ (g) + 9H₂O(g) + heat
CH₄ (g) + 2O₂ (g) → 1CO₂ (g) + 2H₂O (g) + heat
C₃H₈ (g) + 5O₂ (g) → 3CO₂ (g) + 4H₂O (g) + heat
C₆H₆ (g) + 7.5O₂ (g) → 6CO₂ (g) + 3H₂O (g) + heat
A combustion reaction, also known as a combustion process, is a chemical reaction in which a substance combines with oxygen to produce heat and light. It involves the rapid oxidation of a fuel in the presence of an oxidizer, typically atmospheric oxygen. The reaction releases energy in the form of heat and light.
The general equation for a combustion reaction can be represented as: fuel + oxygen → carbon dioxide + water + energy.
Combustion reactions are essential for various processes, including the burning of fossil fuels for energy production, combustion engines in vehicles, and even the process of respiration in living organisms.
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Related Questions
Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of which of the following?
A gas is formed when baking soda and vinegar are mixed.
Baking soda dissolves in vinegar when they are mixed.
Vinegar turns into alcohol when it is mixed with baking soda.
A precipitate is formed when baking soda and vinegar are mixed.
Answers
What is the pOH of an aqueous solution with a pH of 10.6?
Answers
Answer:
pOH=3.4
Explanation:
pH + pOH = 14
So if you have the pH, rearrange the equation:
14-10.6=3.4
Increasing which factor will not increase the rate of a chemical reaction?
A: concentration of reactants
B: heat
C: product
D: surface area
Answers
Answer:
c. product
i had the test
Which element is in the same group as Al (aluminum)?
O A. B (boron)
O B. Si (silicon)
O C. Zn (zinc)
O D. Mg (magnesium)
Answers
True or False. Water pressure increases as you travel deeper.
Answers
Answer:
The answer is true.
Explanation:
The deeper you go the more water there's on top of you pushing down.
Answer:
True
Explanation:
21. A piece of metal with a a mass of 15.2 g is heated from 17°C to 42°C. In the process it absorbs 1362 J of
energy as heat. What is the specific heat of the metal?
TO
Answers
Answer:
3.58J/g°C is the specific heat of the metal
Explanation:
The specific heat of a material is defined as the energy that 1g of the material absorbs and produce the increasing in temperature in 1°C. The equation is:
Q = S*ΔT*m
Where Q is energy = 1362J
S is specific heat of the material
ΔT is change in temperature = 42°C - 17°C = 25°C
And m is the mass of the material = 15.2g
Replacing:
S = Q / ΔT*m
S = 1362J / 25°C*15.2g
3.58J/g°C is the specific heat of the metalScientists recently discovered that firing low-energy particles at potatoes keeps the potatoes
from developing unwanted sprouts. They observed that these energy particles prevent cell
division in the sprouts. This stops the potatoes from sprouting for up to 120 days. How will this
development most likely affect the potato industry?
Answers
Answer:
By allowing the potatoes to be stored longer so they can be sold during winter months.
Explanation:
Since low energy particles are fired at the potatoes to prevent them from developing unwanted sprouts, it means that it prevents sprouts from growing on the potatoes.
Now, winter is wet period which encourages more growth of the sprouts. Thus, the way this development will affect the industry is that the potatoes will be stored for longer period and then sold in the winter.
Fossils indicate that many organisms that lived long ago are
Answers
For the following, you will complete an atom count, but you will first need to make the list of atoms. After the count is complete, determine whether the equation is balanced.
N2H4 + N2O4 → 3 N2 + 4 H2O
please help
Answers
Answer: The equation [tex]N_{2}H_{4} + N_{2}O_{4} \rightarrow 3N_{2} + 4H_{2}O[/tex] is not a balanced equation.
Explanation:
A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.
For example, [tex]N_{2}H_{4} + N_{2}O_{4} \rightarrow 3N_{2} + 4H_{2}O[/tex]
Here, number of atoms on reactant side are as follows.
N = 4H = 4O = 4Number of atoms on product side are as follows.
N = 6H = 8O = 1Since, the number of atoms present on reactant side are not equal in number as compared to the atoms present on product side. Hence, this equation is not balanced.
Thus, we can conclude that the equation [tex]N_{2}H_{4} + N_{2}O_{4} \rightarrow 3N_{2} + 4H_{2}O[/tex] is not a balanced equation.
When sodium chloride is dissolved in water, the freezing point of water _________. A. increases B. first increases, then decreases C. does not change D. decreases
Answers
The presence of a non-volatile salt will decrease the freezing point of water and this process is called depression in freezing point. Thus option D is correct.
What is freezing point?Freezing point of a substance is the temperature at which it converts from its liquid state to solid state where, both the states are in equilibrium. Freezing point of water is zero degree celsius.
The freezing point of a solvent depends on some parameters such as the bond type, molecular weight, temperature, pressure etc.
When a non-volatile solute is added to the solvent its freezing point decreases from its initial value. Because presence of non-volatile salts will affect the intermolecular attraction and thereby the energy that must be applied to freeze the compound.
Therefore, the freezing point of water decreases, when sodium chloride is added into it. Thus option D is correct.
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Which acid was used in the titration curve below?
HCl
H2 S O4
HNO3
H3PO4
Answers
HNO3
Explanation:
hydrochloric acid (HCl), sulfuric acid (H 2start subscript, 2, end subscriptSO 4start subscript, 4, end subscript), nitric acid (HNO 3start
1. Watch how the solubility of a gas changes as pressure is increased and then decreased during the run. Which of the following statements correctly explain the relationship between the solubility of a gas and its pressure?
A. As pressure decreases, the concentration of gas molecules in the solution increases.
B. The concentration of gas particles in the solution is higher at 4.25 atm than at 1.00 atm.
C. The solubility of a gas decreases with a decrease in pressure.
D. The solubility of nitrogen gas at 2.00 atm is twice the solubility of the gas at 1.00 atm.
E. Fewer gas molecules are soluble at higher pressures.
F. More gas molecules are soluble as pressure is increased.
G. As pressure is increased, the rate at which gas molecules enter the solution decreases.
2. At a certain temperature, the solubility of N2 gas in water at 3.08 atm is72.5mg of N2 gas/100 g water. Calculate the solubility of N2 gas in water, at the same temperature, if the partial pressure of N2 gas over the solution is increased from 3.08 atm to 8.00 atm .
Answers
Answer:
A. As pressure decreases, the concentration of gas molecules in the solution increases.
D. The solubility of nitrogen gas at 2.00 atm is twice the solubility of the gas at 1.00 atm.
F. More gas molecules are soluble as pressure is increased.
The solubility is 188.3 mg of N2 gas/100 g water.
Explanation:
As the pressure on the gas decreases, the volume of gas molecules in the solution increases due to having distance from each other. The solubility of nitrogen gas at 2.00 atm is twice the solubility of the gas at 1.00 atm because there is more pressure on the gas molecules so due to more compression, the gas becomes more soluble. More gas molecules are soluble as pressure is increased. The solubility is 188.3 mg of N2 gas/100 g water if the atmospheric pressure is increases from 3.08 atm to 8.00 atm. This value is calculated with the help of formula i.e. P2/P1 = S2/S1.
Which of the following is an example of work being done?
A.
Carrying a 98 kg box across a room.
B.
Pushing a car with 250 N of force, but the car does not move.
C.
Holding a 48-pound barbell above your head for 30 seconds.
D.
Carrying a 98 kg box up the stairs.
Answers
Answer:
A.
Carrying a 98 kg box across a room.
D.
Carrying a 98 kg box up the stairs
Answer: Hello, there! your answer is Below
D.
Carrying a 98 kg box up the stairs.
Explanation:
Work is done whenever a force moves something. Everyday examples of work include walking up stairs, lifting heavy objects, pulling a sledge and pushing a shopping trolley. Whenever work is done, energy is transferred from one place to another.
Hope this Helps you!!!
Have a great day!!!
A gas is under a pressure of 760torr and occupies volume of 525cm3. If the pressure is doubled, what volume would gas now occupy? Assume the temperature is constant?
Answers
262. 5cm3.
using the Boyles law formula. p1v1=p2v2
P1=760torr.
v1=525cm³
p2=760×2=1520torr.
v2=?
p1v1=p2v2
760×525=1520×v2
v2=[ 760×525]÷1520
v2= 262.5cm³
when the pressure increases, the volume decreases.
When considering free energy change, biochemists usually define a standard state, the biochemical standard state, which is modified from the chemical standard state to fit biochemical applications. Determine which of the phrases describe the biochemical standard state, the chemical standard state, or both.
a. Temperature is 25C
b. Initial concentration of reactants and products is 1M
Answers
Answer:
Chemical standard state
a. Temperature is 25C
b. Initial concentration of reactants and products is 1M
Biochemical standard state
a. Temperature is 25C
b. Initial concentration of reactants and products is 1M
Explanation:
The standard state is the reference state of a material which can be used to calculate its properties under other nonstandard conditions.
The biochemical standard state include;
a. Temperature is 25C
b. Initial concentration of reactants and products is 1M
Similarly, the chemical standard state include;
a. Temperature is 25C
b. Initial concentration of reactants and products is 1M
Hence the answer.
What Energy transformation occurs when gasoline burns in an automobile
Answers
Answer:
The release of energy from fuels is used to make other forms of energy. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat. The heat is converted into mechanical energy. The mechanical energy moves the car.I hope this helped!
Explanation:
Can anyone just give me the answers?
Answers
Answer:
i answered you
Explanation:
Most genetic mutations are repaired by____
a. ATP
b. Digestive juices
c. Insulin
d. Enzymes
Answers
I need help with this question. No links, a real answer. Thank you
NaOH + AlCl3 --> Al(OH)3 + NaCI.
How many grams of Al(OH)3 are produced from 3.00 g of AlCl3 with excess of NaOH?
Answers
Answer:
1.75 g of Al(OH)₃.
Explanation:
We'll begin by writing the balance equation for the reaction. This is given below:
3NaOH + AlCl₃ —> Al(OH)₃ + 3NaCI
Next, we shall determine the mass of AlCl₃ that reacted and the mass of Al(OH)₃ produced from the balanced equation equation. This can be obtained as follow:
Molar mass of AlCl₃ = 27 + (3×35.5)
= 27 + 106.5
= 133.5 g/mol
Mass of AlCl₃ from the balanced equation = 1 × 133.5 g = 133.5 g
Molar mass of Al(OH)₃ = 27 + 3(16 + 1)
= 27 + 3(17)
= 27 + 51
= 78 g/mol
Mass of Al(OH)₃ from the balanced equation = 1 × 78 = 78 g
SUMMARY:
From the balanced equation above,
133.5 g of AlCl₃ reacted to produce 78 g of Al(OH)₃.
Finally, we shall determine the mass of Al(OH)₃ produced by the reaction of 3 g of AlCl₃. This can be obtained as follow:
From the balanced equation above,
133.5 g of AlCl₃ reacted to produce 78 g of Al(OH)₃.
Therefore, 3 g of AlCl₃ will react to produce = (3 × 78)/133.5 = 1.75 g of Al(OH)₃.
Thus, 1.75 g of Al(OH)₃ were obtained from the reaction.
Which of these are an important part of a scientific process?
Answers
The chemical reaction between water and magnesium is?
Answers
Answer: hydrogen gas
Explanation: When magnesium interacts with water, it will form a hydrogen gas that ignites violently due to the excessive heat and oxygen supply.
If a substance has a ph of 3, what is it
Answers
Answer:
Acidic
Explanation:
On a standard Ph scale, anything lower than 7 on a scale is acidic and anything over 7 is alkaline lemon consists a large amount of acidity due to the amount of citric acid equipped inside it, Bleach is placed on the alkaline side of the scale because it includes chemicals such as Sodium hypochlorite and KOH(Potassium hydroxide) which can cause chemical burns when they are near contact as a substance itself.
Simply, if a substance has a ph of 3 it is acidic.
(if you'd like you could choose my answer as brainliest it would help me a lot)
Why do scientist conduct experiments on animals?
Answers
Answer:
Animals are used in scientific research to help us understand our own bodies and how they work. This is necessary to develop new medicines. Animals are also used to safety test potential medicines before they are tested in people and to check the safety of other chemicals.
Explanation:
Write in exponential form: 34⋅34⋅34⋅34⋅34⋅34⋅34⋅34.
Answers
Answer:
34^8
Explanation:
What is the molarity of a solution?
the answer is The number of moles of a solute per kilogram of solvent
Answers
Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.
Which of the following is true?
The imaginary one subscript does not have a Greek prefix
The name of C6 H10 F6 is hexacarbide decahydrogen hexafluorine.
The name for the N2 molecule would have no Greek prefixes in it.
To name a covalent molecule you always change the ending on the metal atom.
Answers
Answer:
The name for the N2 molecule would have no Greek prefixes in it.
Explanation:
Prefixes and suffixes are used to name compounds that have many component parts.
The molecule N2 is just a simple molecule that consists of only two atoms of nitrogen. It is a diatomic molecule hence there are no Greek prefixes in the name of the molecule.
The molecule is simply identified as nitrogen gas.
the term rhizospher is given by
Answers
Answer:
the interface between soil and plant root
:/ pls help me i need to do this by 1am, someone pls help me arrange it. Literally bots are the worst
Answers
Answer:
sry im just giving same answer
Explanation:
What has more kinetic energy? 120 180, 105
Answers
Answer:
If those values are in terms of mass, weight or velocity
Kinetic energy will be in the order 180 » 120 » 105
Answer:
105, if you're dealing with the weight of object
Explanation:
It's the amount of speed/movement an object can move. The lighter the weight the more amount of speed it has.
Hope this helps!
Question 5 of 25
Which type of reaction is shown by this general equation?
Reactants + energy - products
A. Synthesis
B. Combustion
C. Endothermic
D. Exothermic
Answers
Answer:
C Endothermic
Explanation:
a. p. e. x