state 2 gases used for combustion

Answers

Answer 1
Flaming combustion and smoldering combustion

Related Questions

How many grams are in 4.5 moles of NaF?

Answers

Answer:

3139542g

Explanation:

That's because if you talk about

4.5

moles of sodium fluoride, you would get a really absurd number of grams.


a student used a vernier magnetic field sensor to measure the strength of the magnetic field generated by a bar magnet. at which position is the
strength of the magnetic field strongest point a or point b?

Answers

The position is the strength of the magnetic field strongest is is the place where the magnetic field leaves, being point A.

What generates a magnetic field?

When an electrically charged particle moves, it creates a magnetic field. According to the laws of electromagnetism, this magnetic field originates from the variation of the electric field strength.

In the region of the poles we see that the lines of magnetic induction are closer to each other, therefore, we consider that close to the poles the magnetic field is more intense.

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The electrons that are in the outermost electron shell, also known as the ____________ , have ____________ energy than those in the inner electron shells.

Answers

The electrons that are in the outermost electron shell, also known as the valence shell, have more energy then those in the inner electron shells, I hope this helps<3

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. The outermost electrons are called valence electrons and its energy is higher than the core electrons.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron.

The electrons that are in the outermost electron shell, also known as the valence electrons, have higher energy than those in the inner electron shells.

Therefore, the outermost electrons are called valence electrons and its energy is higher than the core electrons.

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In this experiment, simple chemical reactions are used to generate small quantities of hydrogen and
oxygen gases. These methods would be too expensive and too complicated if large quantities of these
gases were needed, however. Use your textbook, a chemical encyclopedia, or an online source to look
up the major industrial methods of preparing very large quantities of these gases. Summarize your
findings here.

Answers

One of the industrial method for the production of hydrogen is the steam reforming process while oxygen is air separation.

Industrial method of hydrogen preparation

One of the industrial method for the production of hydrogen is the steam reforming process also known catalytic steam–hydrocarbon process.

In  catalytic steam–hydrocarbon process, gaseous or vaporized hydrocarbons are treated with steam at high pressure over a nickel catalyst at 650°–950° C to produce carbon oxides and hydrogen.

Industrial method of oxygen preparation

One of the industrial method of oxygen production is the separation of air using either a cryogenic distillation process or a vacuum swing adsorption process.

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The half-life of carbon-14 is approximately 5700 years. An archaeologist unearths a piece of wood that is determined to
have 83% of its carbon-14 remaining. Using carbon-12 dating techniques, approximately how old is the ancient piece of
wood that she located?

Answers

The age of the ancient piece of wood that she located given the data is 1482 years

How to determine the number of half-lives

Original amount (N₀) = 100%

Amount remaining (N) = 83%

Number of half-lives (n) =?

2ⁿ = N₀ / N

2ⁿ = 100 / 83

2ⁿ = 1.2

Take the Log of both side

Log 2ⁿ = Log 1.2

nLog 2 = Log 1.2

Divide both side by Log 2

n = Log 1.2 / Log 2

n = 0.26

How to determine the age

Number of half-lives (n) = 0.26

Half-life (t½) = 5700 years

Time (t) =?

t = n × t½

t = 0.26 × 5700

t = 1482 years

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Help!! fast pls. what is the second quantum number for one of the electrons in the 4p energy sub level of bromine

Answers

The second quantum number for one of the electrons in the 4p energy sub level of bromine is l = 1 .

What are Quantum Numbers ?

Those set of numbers which describe the energy level and position of an electron are called Quantum Numbers.

There are 4 types of quantum numbers :

Principle Quantum Numbers

Azimuthal Quantum Number  

Magnetic Quantum Number

Spin Quantum number

the bromine atom the one electron in 4p energy sublevel,

 it is in 4rd shell , n= 4 ,

it is in 'p' orbital l = 1

therefore value of m = -1 , 0, 1

[tex]\rm m_s[/tex] = +1/2 or -1/2

The second quantum number for one of the electrons in the 4p energy sub level of bromine is l = 1 .

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groundwater is an important resource for all life on earth. as you have read, water levels in the ogallala aquifer are decreasing. one proposed
strategy mentioned in the article is to dig deeper wells. do you agree or disagree with this strategy? use evidence and scientific reasoning to
support your position

Answers

Digging of wells being able to increase aquifer is something I agree with.

What is an Aquifer?

This is a water permeable rock layer which is found in the underground layer of the earth.

Wells will ensure water seeps into these layers thereby bringing about an increase in the aquifer.

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how many moles of pb(NO3)2 are needed to react with 4.8 moles of Al

Answers

If the mole ratio (the number beside each element in the equation on the left side) is 1:1, you’ll need the same amount, so 4.8 moles of Pb(NO3)2!

An atom has eight protons and nine neutrons. draw the atomic structure of the atom

Answers

draw eight circles and nine more in a big circle = this represents your nucleus
draw eight electrons (since electrons = protons in neutral elements) outside of it (2 in one ring, then 6 in a second ring)

An atom has eight protons and nine neutrons. The atomic structure of the atom is attached below in image.

What is an atomic structure ?

The term "atomic structure" describes the structure of an atom, which has a nucleus that contains both protons and neutrons . The centre of the nucleus is circled by the negatively charged electrons.

The smallest piece of ordinary matter within an element is called an atom. Protons, neutrons, and electrons are the three subatomic particle types that make up an atom.

An isotope's number is equal to the sum of its protons plus neutrons since their masses are almost identical. Oxygen 16 therefore has 8 protons and 8 neutrons, followed by oxygen 17 with 8 protons and 9 neutrons, and oxygen 18 with 8 protons and 10 neutrons.

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Below is the thermochemical equation for the combustion of octane.

SC8H18(l) + 25O2(g) ⇒ 16CO2 (g) + 18H2O(l), ΔH= -10,941kj


How much heat is released during the combustion of 4 moles of octane (C8H18)

Question 5 options:

-21,882 kJ


-175,056 kJ


-2,735 kJ


-10,941 kJ


Impossible to answer this question with the information provided


-5,470.5 kJ

Answers

5mol produces -10.941KJ

4 mol let produces x KJ

Solve through proportion

5/-10.941=4/x5x=-43.764x=-43.764/5x=8.756 KJ

5moles of octane produces -10941KJ

1mol of octane produces 2188KJ

4mol of octane produces

2188(4)8756KJ

The rocks that make up the crust are relatively cold and ?

Answers

Answer:

brittle

Explanation:

Which electrochemical cell does the illustration depict

Answers

Answer:

This depicts an electrolytic cell.

In the diagram, Electrons flow from the right half-cell to the left one through the wire, which statement is true?

The metal strip on the left has a lower activity than on the right

The metal strip on the right has a lower activity than the on on the left

The activities of both metals strips are equal

Answers

Answer:

The metal strip on the left has a lower activity than the one on the right.

(Took the exam)

Activity 1: "PEA-ce of Cake"

OBJECTIVE: Identify the genotypic and phenotypic ratios of offspring in the standard monohybrid cross.

Parent 1: _______________
Garden pea plant with homozygous gene pair for round seed
Garden pea plant with homozygous gene pair for wrinkled seed

Genotype (Parent 1): _______________
RR
rr

Parent 2: _______________
Garden pea plant with homozygous gene pair for round seed
Garden pea plant with heterozygous gene pair for round seed

Genotype (Parent 2): _______________
RR
Rr

Answers

The genotype and phenotype ratio for the first cross will be 100% Rr and 100% round seeded while that of the second cross will be 1RR:1Rr and 50/50 round/wrinkle seeded offspring respectively.

Genotype and phenotype ratio

For the first cross:

                         RR   x   rr

                      Rr   Rr   Rr   Rr

Genotype ratio: 100% Rr

Phenotype ratio - 100% round seeded

For the second cross:

                        RR    x    Rr

                      RR   Rr   RR   Rr

Genotype ratio: 1RR:1Rr

Phenotype ratio = 50% round seeded and 50% wrinkle seeded.

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How long does it take for dental stitches to dissolve.

Answers

2-7 days, but depends on the procedure

Calculate the volume of an
object with the following
dimensions:
4 cm x 15 cm x 5 cm

Answers

Answer:

300cm³

Explanation:

volume=l×b×h

4cm×15cm×5cm

=300cm³

NEED ASAP PLS WILL AWARD BRAINLIEST
The table compares some characteristics of two atoms.
Charged Particles
Atom Number of Neutrons Mass Number
X 6 12
Y 7 13


Use the table to determine the number of protons for each atom. Then, choose the statement below that is true about the two atoms.
Atom X and Atom Y are in the same row, but not the same family, on the periodic table.
Atoms X and Atom Y are in the same family, but not the same row, in the periodic table.
Atom X is in a column to the right of Atom Y in the periodic table.
Atom X and Atom Y occupy the same position in the periodic table because they are isotopes.

Answers

Answer:

proton number for element X is 6

while proton number for element Y is 7

X and Y are in the same row but not the same family on the periodic table cause element X belongs to group 6 also known as carbon family while Y belongs to group 7 also known as nitrogen family

Based on Charles's law, which of the following statements is true for an ideal gas at a constant pressure and mole amount?

The number of collisions is independent of volume.

The number of collisions decreases with increase in volume.

Volume is directly proportional to absolute temperature.

Volume is inversely proportional to absolute temperature.

Answers

Answer:

the number of collisions is independent of Volume.

Based on Charles's law,  an ideal gas at a constant pressure and mole amount is " the number of collisions is independent of volume."

What is Charles's law?

Gases have a propensity to expand while heated, according to Charles' law, an innovative gas law.

What is collisions?

A collision would be any situation in where two or even more bodies quickly number of factors on one another.

Based on Charles's law,  an ideal gas at a constant pressure and mole amount is " the number of collisions is independent of volume."

Therefore, the correct answer will be option (A).

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Select the atoms that belong to the same element.

16 protons 16 neutrons 16 electrons
11 protons 10 neutrons 11 electrons 13 protons 14 neutrons 13 electrons. 14 protons 14 neutrons 14 electrons. 11 protons 12 neutrons 11 electrons

Answers

Explanation:

please structure your question correctly so that we can answer.

Answer:

Cant answer until its wrote correctly

Explanation:

Because its not stated properly

When adding sugar to tea, it was observed that the sugar kept dissolving. After a
minute, all of the sugar was completely dissolved, as no extra particles can be
added and be seen floating around. The mixture is then considered to be

Answers

Answer: When adding sugar to tea, it was observed that the sugar kept dissolving. After a minute, all of the sugar was completely dissolved, as no extra particles can be added and be seen floating around.  The mixture is then considered to be

Explanation:

The molecule of  mixture  cannot be seen hence, it will be considered as homogeneous mixture.

What is molecule?

A molecule is just a collection of more than two atoms bound together by chemical bonds; depending on the context, the phrase doesn't have to include ions that meet this requirement.

What is homogeneous mixture?

Solids, liquids, as well as gases, can all be homogeneous mixtures. Through, they have almost the same look and chemical makeup.

When sugar will be dissolved, the sucrose molecules get separated from one another. The materials that make up individual molecules stay together like sucrose molecules sucrose molecules, so the molecule will not break up.

Therefore mixture can be considered as molecule and homogeneous mixture.

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How many moles of C are in a sample of C5H12 that also contains 22.5g of H?

Answers

The number of moles of C present in C₅H₁₂ that contains 22.5 g of H is 9.375 moles

How to determine the mass of C₅H₁₂ that contains 22.5 g of H

1 mole of C₅H₁₂ = (12×5) + (1×12) = 72 g

Mass of H in 1 mole of C₅H₁₂ = 12 × 1 = 12 g

Thus,

12 g of H is present in 72 g of C₅H₁₂

Therefore,

22.5 g of H will be present in = (22.5 × 72) / 12 = 135 g of C₅H₁₂

How to determine the mole of C present in 135 g of C₅H₁₂

72 g of C₅H₁₂ contains 5 moles of C

Therefore,

135 g of C₅H₁₂ will contain = (135 × 5) / 72 = 9.375 moles of C

Thus, 9.375 moles of C is present in C₅H₁₂ that contains 22.5 g of H

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The elaboration likelihood model emphasizes the use of __________ persuasion and __________ persuasion methods. a. direct . . . elaborative b. peripheral . . . elaborative c. direct . . . peripheral d. indirect . . . direct

Answers

The elaboration likelihood model emphasizes the use of direct persuasion and peripheral persuasion methods.

What is direct persuasion and peripheral persuasion?

This theory involves a dual process which explains how attitudes are changed in individuals through persuasion.

These methods help in the formation of attitude which makes, in this case,  option use of direct persuasion and peripheral persuasion.

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Answer:

C. direct . . . peripheral

Explanation:

Because I said so.

Sample Response: Forces are either positive or negative vectors, depending on the direction in which the force is acting. The net force is the sum of all of the forces acting on an object. If the children pull on the toy with the same force in opposite directions, the forces will be perfectly balanced and cancel out, leaving a net force of zero.

What did you include in your response? Check all that apply.

Forces are vectors.
Forces can be positive or negative.
The forces exerted by the children are in balance.
The net force is the sum of all of the forces that canceled out to zero.

Answers

The net force is the sum of all of the forces that cancelled out to zero. Hence, option D is correct.

What is force?

The pushes or pulls on an object with mass causes it to change its velocity.

The net force is the vector sum of all forces acting on an object. Force is a vector quantity.

Two forces of equal magnitude when acting on an object in opposite directions will cancel out each other.

As a result net force is equal to 0. The word net here shows the total force acting on the object.

Hence, option D is correct.

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The net force is the sum of all of the forces that cancelled out to zero. Hence, option D is correct.

What is force?

The pushes or pulls on an object with mass causes it to change its velocity.

The net force is the vector sum of all forces acting on an object. Force is a vector quantity.

Two forces of equal magnitude when acting on an object in opposite directions will cancel out each other.

As a result net force is equal to 0. The word net here shows the total force acting on the object.

Hence, option D is correct.

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1. Which term identifies a factor that will shift a
chemical equilibrium?
A) atomic radius
B) catalyst
C) decay mode
D) temperature

Answers

Answer:

D) Temperature,

Explanation:

CH3NH₂ + H2O → what is this equal

Answers

The balanced equation is CH₃NH₂ + H₂O → CH₃NH + H₃O.

What is a chemical reaction?

A chemical reaction is a reaction involves two or more reactants that reacts to form products.

When methyl amine reacts with water, then methyl amino and hydronium ion are formed.

Thus, the product of the reaction is CH₃NH₂ + H₂O → CH₃NH + H₃O.

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Type the correct answer in each box. express your answer to two significant figures. you form water vapor by mixing oxygen and hydrogen at 730°c in a 5.4-liter container. this is the equation for the reaction: o2(g) 2h2(g) → 2h2o(g). the partial pressure of oxygen before the reaction is 122.3 kilopascals, and there is excess hydrogen. how many moles of water are formed? the reaction produces moles of water.

Answers

The number of moles of water vapor formed in the reaction is 0.158 moles

What is the ideal gas equation?

The ideal gas equation shows the relationship between number of moles, temperature, volume and pressure.

Now;

P = 122.3 kilopascals or 1.21 atm

V = 5.4 L

T = 730°c or 1003 K

n = ?

R = 0.082 atmLK-1mol-1

PV = nRT

n = PV/RT

n =  1.21  *  5.4/0.082 * 1003

n = 6.53/82.2

n = 0.079 moles

The equation of the reaction is; O2 (g) + 2H2(g) ---->2H2O(g)

If 1 mole of O2 formed 2 moles of H2O

0.079 moles of O2 yield x moles of H2O

x = 0.079 * 2/1

= 0.158 moles

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How much mass does 6 moles of K have?

Answers

Answer:

234.6

Explanation:

What is the heat abosorbed by 47.5g of silver (Ag) when the temperature rises by 10.0C?

Answers

The heat absorbed by 47.5g of silver (Ag) when the temperature rises by 10 °C is 111.625 J .

What is Specific Heat ?

Specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree.

The units of specific heat are usually calories or joules per gram per Celsius degree.

The equation used to solve for specific heat capacity is this:

q = mcΔT

where q heat absorbed or lost,

c is the specific heat capacity,

m is the mass, and

ΔT is the change in temperature

= final temperature− initial temperature

Given that m = 47.5g

ΔT = 10 K

Specific Heat of silver = 0.235 J/gK

Therefore

q = 47.5 * 0.235 * 10

q= 111.625 J

Therefore the heat absorbed by 47.5g of silver (Ag) when the temperature rises by 10 °C is 111.625 J .

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In the chemical equation below, name the reactant(s) and product(s).
CH4 (g) + O2 (g) → CO2 (g) + H₂O (g)

Answers

Answer:Methane(CH4) and dioxygen(O2) are the reactants

Carbon dioxide(CO2) and water(H2O) are the products

Explanation:

Based on Figure 2, which statement best describes what happens to the amount of matter in the reaction?

A. There are 54 atoms in the reactants and 54 atoms in the products.

B. There are 15 reactants molecules that become the 15 product atoms.

C. The 15 reactants molecules are destroyed to produce energy in the form of energy

D. The fuel molecule is broken in half and each half makes molecules of water and carbon dioxide as products.​

Answers

Answer:15 +18

Explanation:15 fuel +18 oxygen + 33 cd

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