Answer:
2 C2H2 (g) + 5 O2 (g) → 4 CO2 (g) + 2 H2O (l)
Explanation:
Redox reaction: In this type of reaction, oxidation and reduction reaction occurs simultaneously in same chemical reaction.
2C_2H_2+5O_2\rightarrow 4CO_2 + 2H_2O2C
2
H
2
+5O
2
→4CO
2
+2H
2
O
This reaction is a redox reaction :
Removal of hydrogen or addition of oxygen is termed as oxidation. in above reaction, removal hydrogen from acetylene gives carbon-dioxide.
Removal of oxygen or addition of hydrogen is termed as reduction. in above reaction, removal of one oxygen atom from oxygen molecule with addition of two hydrogen atoms gives water
The oxidation number of carbon in acetylene is -2.
The oxidation number of carbon in carbon-dioxide= +4
Oxidation number of carbon increases after the reaction which means that carbon is getting oxidized.
The oxidation number of oxygen in oxygen gas = 0
The oxidation number of oxygen in water = -2
Oxidation number of oxygen decreases after the reaction which means that oxygen is getting reduced.
The electrons released during oxidation are transferred to the species which are undergoing reduction reaction.
Answer:
Just put this, or something like it:
The oxidation number of carbon changes from -1 to +4.
The oxidation number of oxygen changes from 0 to -2.
Carbon is oxidized.
Oxygen is reduced.
Electrons are transferred from carbon to oxygen.
Explanation:
What type of bond (Ionic, Covalent or metallic) would be created when titanium bonds with chlorine?
(electronegativity values Ti = 1.54 Cl = 3.16)
Answer:
Covalent
Explanation:
Titanium on reaction with chlorine forms Titanium tetra chloride(TiCl4).
Titanium holds strong covalent bond with chlorine in TiCL4
A given mass of gas in a rigid container is heated from 100 °C to 300 °C. Which of the following best describes what will happen to the pressure of the gas? The pressure will
Taking into account the Gay-Lussac's Law, the pressure will increase by a factor less than three.
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions against the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In summary, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
Mathematically, Gay-Lussac's law indicates that the ratio of pressure to temperature is constant:
[tex]\frac{P}{T} =k[/tex]
Studying two different states, an initial state 1 and a final state 2, it is satisfied:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case, a given mass of gas in a rigid container is heated from 100 ° C to 300 ° C, that is, it is heated from 373 ° K to 573 ° K. This indicates that the temperature is increasing by a factor less than three. Since pressure is directly proportional to temperature, pressure must increase in the same proportion.
Finally, the pressure will increase by a factor less than three.
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https://brainly.com/question/4147359?referrer=searchResultsplease help this is worth half of my grade! what letter represents the trough of the wave a,b,c,d,e
Hello good afternoon...God bless the answer to your following question is D
because...A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.
The rows in the periodic table are called periods.
What is true about elements in the same period?
A. They have the same atomic mass.
B. Their magnetism increases in strength from left to right.
C. Their atomic numbers increase by 1 from left to right.
D. They have similar chemical properties.
Answer: C
Explanation:
Which type of bond is salt? a. covalent b. valence c. metallic d. ionic
Answer:
D. Ionic
Explanation:
It has ionic bonding! Good luck ^^
lonic bonds tend to form between two atoms with what characteristics?
Answer:Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable. Ionic compounds are typically neutral. Therefore, ions combine in ways that neutralize their charges.
Explanation:
Ionic bonds tend to form between two atoms with a high electronegativity difference.
Explanation:
An Ionic bond is defined as a chemical bond in which the complete transfer of electrons occurs from one atom to another.The transfer of electrons occurs from less electronegative atom to highly electronegative atomThe high electronegativity difference between the atomsCompounds with ionic bonds categorized as ionic compoundsSo, from this, we can conclude that ionic bonds tend to form between two atoms with a high electronegativity difference.
Learn more about ionic compounds here:
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What effect does the spinning of the earth's core have?
A.it creates gravity
B. it creates matter
C. it creates mass
D. it creates the earths magnetic field.
Answer:
c
Explanation:
its c
Earth contains a spinning electric filed. The spinning of earth core creates its magnetic field. Thus, option D is correct.
What is a spinning body?A body which rotates in its own axis is called a spinning body. Earth rotates about its along with revolving around sun. The outer core of earth generates electric current. This is called telluric current.
Flow of this current creates an electric current which is parallels to the surface of earth. The direction of magnetic field lines will be perpendicular to the direction of current. But it comes stronger when parallel to current.
A rotating electric current results in the generation of a magnetic field. Thus spinning of earth core generates a magnetic field and therefore, option D is correct.
To learn more about magnetic field, refer the link below:
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Plsss helpppp
im confused
will mark BRAINLIEST
Answer:
I searched the answer up on Brainly so its not my credit.
Explanation:
The answers D.
"If you have learned that metal + nonmetal ⟶ ionic bond, the answer is D, because N and C are the only pair of nonmetals.
However, if you have learned that a bond is ionic if the electronegativity difference (ΔEN) between the two atoms is greater than 0.7, the answer is A, B, and D.
The Li-Cl bond is definitely ionic.
For Na and C, ΔEN =1.62, so the Na-C bond is a highly polar covalent bond.
For Mg and C, ΔEN = 1.24, so the Mg-C bond is a polar covalent."
Hope this helps :D
Si units are the modern form of _____
Answer:
Metric system !!hope this helpss
A block of lead displaces 50.5ml of water. The block weighs 698 g. From this
information, calculate the density of lead.
Answer:
13.82 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{698}{50.5} \\ = 13.8217...[/tex]
We have the final answer as
13.82 g/mLHope this helps you
Answer this easy science question for brainiest
First come first served:)
Answer:
The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral.
Explanation:
Answer:
the person above me is right
hope you do good on your test
Explanation:
“Selective” means to pick and choose; “permeable” means objects can pass through something. Do you think cell membranes are “selectively permeable”? Give evidence to support your answer.
This is due at 4 p.m.
Answer:
yes the cell membranes are semi permeable
Is the average atomic mass of a sample containing three lithium-6 and two lithium-7 closer to the mass of Li-6 or Li-7 ?
The average atomic mass of a sample closer to the mass of Li-6
Further explanationIsotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.
So Isotopes are elements that have the same Atomic Number (Proton)
Atomic mass is the average atomic mass of all its isotopes
In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu
Mass atom X = mass isotope 1 . % + mass isotope 2.%
three Li-6, mass number = 6
two Li-7, mass number = 7
total abundance = 5
abundance for Li-6 =
[tex]\tt \dfrac{3}{5}\times 100\5=60\%[/tex]
abundance for Li-7 =
[tex]\tt \dfrac{2}{5}\times 100\5=40\%[/tex]
Average atomic mass :
[tex]\tt (0.6\times 6)+(0.4\times 7)=6.4[/tex]
Look at the chemical equation below.
2N2 + O2 2N2O
How many Nitrogen molecules are present? ___________
How many Oxygen molecules are present? ___________
How many N2O molecules are present? ___________
The molecules of Nitrogen, oxygen, and N₂O are 2, 1, and 2 respectively.
What is the chemical equation?A chemical equation can be defined as the expression of a chemical reaction in terms of the chemical symbols of the substances. A chemical equation has reactants, formed products, and an arrow indicating the direction of the reaction.
The equation in which the number of atoms of each element is equal on either side of the chemical equation of a reaction is called a balanced chemical equation.
According to the law of mass conservation, the total mass of the elements on the reactant side should be equal to the total mass of elements on the product side.
Given, the chemical equation of the reaction of nitrogen ad oxygen gas can be written as:
2N₂ + O₂ → 2N₂O
The number of molecules of Nitrogen gas is 2 and the molecules of oxygen gas are one and the molecules of N₂O are equal to 2.
Learn more about the chemical equation, here:
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A student is able to lift 500N weight by applying 100N. What is the mechanical advantage of a simple machine?
Explanation:
Load=500N
Effort=100N
Now,
We have,
Mechanical advantage= Load / effort
= 500/100
=5
Therefore, mechanical advantage is 5.
Select the correct answer
Giving brainliest
Answer: is C&A
Explanation:the electric motor converts electricity in to mechanical energy
the electric generator converts mechanical energy to electricity so it could not be D.
and they don't use batteries as their main source of power so it could not be B.
hence forth it is C&A
HOPE THIS HELPS!!!!!!1
PLEASE MARK BRAINLIEST!!
How did astronomers use technology to identify characteristics of the Crab nebula? technology that detects ultraviolet light found hydrogen in the nebula technology that detects radio waves identified a pulsar at the center of the nebula technology that detects microwaves revealed the behavior of electrons in the nebula technology that detects gamma rays measured the distance of the nebula from Earth
Answer:
technology that detects radio waves identified a pulsar at the center of the nebula
Explanation:
Crab nebula(M1) is a blob-like patch which is supernova remnants as far as Constellation of Taurus is concerned.
It has apparent magnitude of 8.4 and can only be viewed by telescope. The astronomers make use of technology that detects radio waves, which identified a pulsar at the center of the nebula, this pulsar is a magnetized rotating compact star which is known with it's electromagnetic emissions.
Answer:
technology that detects radio waves identified a pulsar at the center of the nebula
Explanation:
After pollen lands on the stigma of a flower, which of the following happens first?
Help I will give brainlist
What does an atomic number represent in an atom? number of neutrons number of protons number of electrons number of protons and neutrons
Answer:
The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Answer: I'm pretty sure the answer is Number of Protons
Explanation:
I took the k-12 test
hEy PeEpS!! SEED HALP!!will give da crown to someone u-u
Answer:
D
Explanation:
This answer is correct; if you want you can use context clues, the middle two are not benefits, the first one is just absurd, so the only other logical answer id D. Also, its true.
The middle two are negative, and therefore cannot be benefits no matter how they are looked at.
For an explanation of the first answer and why it's wrong, read the comments.
which statement is a scientific law
Answer:
It is b
Explanation:
Isopropyl alcohol is a liquid with a density of 0.785 g/cm^3. How much volume would be taken up be 50.0 grams of isopropyl alcohol
Answer:
63.94 cm³Explanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\ [/tex]
From the question we have
[tex]volume = \frac{50}{0.785} \\ = 63.694267...[/tex]
We have the final answer as
63.94 cm³Hope this helps you
When fossil fuels, such as gasoline, are burned, they create smoke. Smoke is best described as a heterogeneous mixture of solid particles from the burning fuel dispersed in a gas – usually air. Smoke can be described more specifically as a suspension. What will most likely happen over time to smoke in the atmosphere? The solid particles will spread out and dissolve. The particles will eventually come together in a cloud and produce rain. Over time, the solid particles will settle on whatever is outside. The particles will remain mixed in the air.
Answer:
Over time, the solid particles will settle on whatever is outside."
Explanation:
Answer:
C
Explanation:
Which temperature is the warmest?
290K
75 F
30 C
Answer:
What the heck is "K" but I beleive 75 is the answer, but maybe wait for sumone else to answer.
Explanation:
Answer:
30 C
Explanation:
Explain why the Earth has four different seasons
Answer:
Earths rotation
Explanation:
Answer:
because if there was not four diferent season we would not have a day or a night because we would not be moving
Explanation:
help pls I will give brainliest!
Answer:
The answer is D, I would type it out but it is to long and I'm kind of lazy, but anyways! Your answer is D
Hope This Helps!
What is 210 kg - 38 kg rounded to the correct number of significant figures
Answer:
170kg
Explanation:
Clinical thermomerter
Answer:
Here is the definition: A medical thermometer (also called clinical thermometer) is used for measuring human or animal body temperature.
Among the groups of elements listed below, which have the same number of electrons in their outermost energy levels?
O NP. As, Sb
None of these
OK, Ca, Rb, Sr
OLI, B, C F
O Na Mg, ALS
Answer:
N, P, As, Sb
Explanation:
Elements present in the same group having same number of valence electrons. The first option is correct from given options because nitrogen, phosphorus, arsenic and antimony are present in same group thus having same number of electrons in outer most energy level.
Electronic configuration of N:
N₇: [He] 2s² 2p³
Electronic configuration of P:
P₁₅: [Ne] 3s² 3p³
Electronic configuration As:
As₃₃: [Ar] 3d¹⁰ 4s² 4p³
Electronic configuration Sb:
Sb₅₁: [Kr] 4d¹⁰ 5s² 5p³
Here it is clear from electronic configuration all these elements have five number of valence electrons.
plsssssssssssssssssssssssssssssssssssssssss help me
Answer:
C
Explanation:
A year is a complete revolution around the Earth