Answer:
B It develops in the lithosphere
Explanation:
Answer:
B
Explanation:
I did the quiz
Which equation is a decomposition reaction? Li2CO3 Right arrow. Li2O + CO2 Zn + HCl Right arrow. ZnCl2 + H2 Na2O + CO2 Right arrow. Na2CO3 C6H12O6 + O2 Right arrow. CO2 + H2O
Answer:
Li₂CO₃ ⇒ Li₂O + CO₂ is a decomposition reaction.
Explanation:
In a decomposition reaction, a single substance decomposes, producing two or more different substances. In other words, in this type of reaction two or more substances are formed from a compound. The atoms that form a compound separate to give the products according to the formula:
AB → A + B
It can occur spontaneously, or be aided by a catalyst, heat, or electrolysis.
In this case:
Li₂CO₃ ⇒ Li₂O + CO₂ It is a type of chemical reaction in which a single compound decomposes into two or more compounds. So it is a decomposition reaction.
Answer:
A. Li2CO3 Right arrow. Li2O + CO2
Explanation:
Correct answer on edge 2022.
Water polarity. Which is the correct answer?
Question 1 of 32
What is the noble gas configuration for arsenic (As)?
The Periodic Table
A. [Ar] 4s 30104p3
B. [Kr] 4p3
C. [Ar] 4p3
O D. [Kr] 45230104p3
Answer:
[Ar] 3d¹⁰ 4s² 4p³
Explanation:
As = [Ar] 3d¹⁰ 4s² 4p³
What is the final temperature of a 27.2-gram wooden block that starts at 23.4 degrees celsius and loses 759 joules of energy? The specific heat capacity of wood is 1.716 joules/gram degree Celsius.
Answer:
The correct answer is 7.1 degree C.
Explanation:
Based on the given information, the initial temperature or To of the block is 23.4 degree C.
The energy lost or Q from the given wooden block is -759 J.
The specific heat capacity or c of the wood given is 1.716 J/g°C
The mass of the wooden block given is 27.2 grams.
There is a need to find the final temperature of the wooden block, for this the formula to be used is,
Q = m × c × (T-To)
Now by putting the given values in the formula we get,
-759 = 27.2 × 1.716 (T - 23.4)
T = 7.1 degree C.
Describe the structure and bonding in graphite.
Answer:
In graphite, each carbon atom is covalently bonded to 3 other carbon atoms. ... These extra electrons are delocalised, or free to move, in the area between layers of carbon atoms. As these electrons are free to move they are able to carry charge and thus graphite can conduct electricity.
Explanation:
Graphite has a layered structure, with each layer consisting of a two-dimensional hexagonal lattice of carbon atoms. Within each layer, carbon atoms are covalently bonded in a flat, trigonal planar arrangement, forming strong σ bonds.
What is graphite?In graphite, carbon atoms are arranged in a flat, hexagonal lattice within each layer, forming strong covalent σ bonds. These layers are stacked on top of each other, held together by weaker van der Waals forces, which allow for easy slippage.
The presence of π bonds between the carbon atoms in each layer results in delocalized π electrons above and below the plane, creating a "sea" of mobile electrons. This delocalization gives graphite its remarkable properties, including electrical conductivity and lubrication.
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A mixture is best described as:
A. None of these
B. A pure chemical substance consisting of one type of atom.
OC. The basic building blocks of matter.
D. Two or more elements or compounds that are mixed together but not chemically bonded.
Answer:
D. Two or more elements or compounds that are mixed together but not chemically bonded.
Explanation:
Mixture is unique as it is not chemically bonded and individual entities such as elements or compounds keep their unique identities.
Answer:
Mixture consists of two or three elements or compounds that are mixed together but not chemically bonded.
What mass of nickel (Ni) is in a 2.4 Kg sample of propanol if the concentration is 20 ppb ? (atomic mass of Ni = 58.69)
Answer:
The mass of nickel is 48μg
Explanation:
Parts per billion is a way to describe small concentrations and is defined as the ratio between μg of solute and kg of solvent.
If a solution of nickel in propanol is 20ppb, contains 20μg of nickel in 1 kg of propanol.
Thus, a sample of 2.4kg of propanol will contain:
2.4kg × (20μg nickel / 1kg) = 48μg nickel
The mass of nickel is 48μgThe element has protons and neutrons
Answer:
All elements have protons and neutrons.
Explanation:
Sure, some standard norms of elements don't have neutrons present (like hydrogen), but different forms of hydrogen have neutrons. Neutrons can and are present in every element in the Periodic Table of Elements.
A volcano violently erupts near a small town and wildlife preserve. Which effect might occur? Some local species develop new adaptations. New species form at the wildlife preserve. Many wildlife species become extinct. Ash and dust fill the air and reduce sunlight.
Answer:
Ash and dust fill the air and reduce sunlight.
Explanation:
Ash and dust comes out of volcanoes, and it is bad for the environment. Polluting the air and causing fogginess, it also reduces sunlight.
Answer:
d
Explanation:
What conclusion did Rutherford draw from his gold-foil experiment? A. Almost all the mass of an atom is concentrated in the nucleus. B. Atoms contain three different subatomic particles. C. Electrons are tiny particles that carry a negative charge. D. The mass of a proton is nearly equal to the mass of a neutron.
Answer:
A. Almost all of the mass is concentrated in the nucleus.
Explanation:
Because when he shot the alpha particles towards the atoms, most passed through (which meant atom is mostly empty space), but some bounced back and such (which meant mass is concentrated in the nucleus.)
The reason they bounced is because alpha particles are postive and nucleus is positive as well, and we know positives don't attract, rather they repel thus they bounced.
When sugar is added to a sugar solution, the sugar does not dissolve. Which
term describes the original sugar solution?
O A. Semisaturated
O B. Supersaturated
C. Saturated
D. Unsaturated
Answer:Supersaturated
Explanation:The answer is supersaturated because supersaturation is a solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature. It is supersaturated because there is already a sugar solution and adding another sugar is more than the maximum amount of solute.
Molecular formula of ammonia
Answer:
NH3 is the molecular formula of ammonia
Explanation:
i hope this will help you :)
Set up the ion formation equations, with ionization energy values for each electron in the valence layer, of the atoms of the chemical elements below: a) Na z=11 b) Ca z= 20 c) Sr z 38 d) Li z= 3 e) Cs z= 55 f) Be z= 43
Answer:
according to quantum physics newtons 3rd law is in the state of nuclear power things so the answer is c
Explanation:
according to quantum physics newtons 3rd law is in the state of nuclear power things so the answer is c
Hypothesis 2 (Particle size): If you
the particle size of a reactant, then the reaction rate
will increase because of the reactant's surface area is exposed allowing more particles to make
contact with each other.
Answer:
Increase the particle size of a reactant
Explanation:
Let me rewrite this question. I am assuming that it should be as follows,
If you _____ the particle size of a reactant then the reaction rate will increase because of the reactant's surface area is exposed allowing more particles to make contact with each other.
And, here we are being asked to fill this dash line _____
It could only be that the particle size increases or decreases. Increasing the size of the reactant will increase the chance of collisions if the container with which the reactants are kept are constant. This would increase the reaction rate - thus _____ = increases.
Answer: decrease, more
Explanation: i just did it
Which refers to the force that one massive object exerts to attract another object? velocity gravity acceleration newton
Answer:
gravity is the correct answer to the given question .
Explanation:
The gravity is the gravitational force due to the gravitational the solar system as well as the other body of dimensional object to its center point. The gravitational force maintains all the planetary systems in the orbit over the sun.We can called gravitational force as the universal force .
The gravitational force attracts the huge object for grabbing the another object.All the other option are not attracting the another object that's why these are incorrect option .Answer:
the answer is b gravity :)
Explanation:
u got this :)
Explain how to arrange the following in increasing order of atomic size/radius: Al, C, Si
Answer:
C, Si, Al
Explanation:
We use periodic trends to help us find the atomic radii. The trend for atomic radii on the Periodic Table of Elements is down and to the left. So whichever elements are furthest to the left and farthest down have the largest atomic radii.
Many nuclides with atomic numbers greater than 83 decay by processes such a electron emission. Explain the observation that the emissions from these unstable nuclides also ormally include alpha particles.
Answer:
The Explanation is described below:-
Explanation:
The purpose of the emission of an element with an atomic number higher than 83 mostly during the disintegration of the nucleus is that if the alpha particle is released, the recently established nuclei or the daughter would be closer to the stability band.
In other terms, in the case of an alpha particle explosion, the daughter nuclei would be more stable than the parent nuclei.
[tex]\alpha[/tex] particles: Such particles are called alpha. They are basically divalent helium cations or helium nuclei with two protons and two neutrons. It is portrayed by
[tex]^4_2He\\\\or\\\\^4_2\alpha[/tex]
The Stability band is the area in the graph that is plotted between the number of protons and the number of protons representing the stable nucleus.
what is meant by amoeba and what is the name of its parts
Answer:
amoeba is the unicellular organism which can be seen by only microscope but not with our nacked eyes
Answer:
An amoeba often called an amoeboid, is a type of cell or unicellular organism which has the ability to alter its shape, primarily by extending and retracting pseudopods Amoebae do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals.
name of parts of ameoba
3 parts – the cytoplasm, plasma membrane and the nucleus. The cytoplasm can be differentiated into 2 layers – the outer ectoplasm and the inner endoplasm. The plasma membrane is a very thin, double-layered membrane composed of protein and lipid molecule
i hope this will help you
Which consists of only one type of atom?
Answer:
A chemical element
Explanation:
A chemical element consists of only one type of atom.
Consider an electrochemical cell based on the spontaneous reaction 2AgCl(s) + Zn(s) → 2Ag(s) + 2Cl– + Zn2+. If the zinc ion concentration is kept constant at 1 M, and the chlorine ion concentration is decreased from 1 M to 0.001 M, the cell voltage should:
Answer:
there is an increase by 0.18 V in the cell voltage.
Explanation:
The given equation of the reaction can be well written as
[tex]2AgCl_{(s)} + Zn _{(s)} \to 2Ag_{(s)} + 2 Cl^- _{(aq)}+ Zn^{2+}_{(aq)}[/tex]
By application of Nernst Equation ; we have the expression
[tex]E_{cell} = E^0- \dfrac{0,059}{n}log (\dfrac{[product]}{[reactant]})[/tex]
here in the above equation;
n = number of electrons transferred in the equation of the reaction
n = 2
Also;
[tex]E^0 = E_{cathode} - E_{anode}[/tex]
[tex]E^0 = E_{Ag^+/Ag} - E_{Zn^+/Zn}[/tex]
[tex]E^0 = +(0.80 \ V) - (-0..76 \ V)[/tex]
[tex]E^0 = (0.80 \ V +0..76 \ V)[/tex]
[tex]E^0 = 1.56 \ V[/tex]
If the zinc ion concentration is kept constant at 1 M; we have:
[tex]E_{cell} = E^0- \dfrac{0.059}{n}log (\dfrac{[product]}{[reactant]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log ({[Zn^{2+} ]}{[Cl^{2-}]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log (1)[/tex]
Since log(1) = 0
Therefore;
[tex]E_{cell} = 1.56\ V[/tex]
When the chlorine ion concentration is decreased from 1 M to 0.001 M; we have;
[tex]E_{cell} = E^0- \dfrac{0.059}{n}log (\dfrac{[product]}{[reactant]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log ({[Zn^{2+} ]}{[Cl^{2-}]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log ({[1*0.001^2}]})[/tex]
[tex]E_{cell} = 1.56 - 0.0295 \ * \ log ({[1*10^{-6}}]})[/tex]
[tex]E_{cell} = + 1.737 \ V[/tex]
The change in voltage = [tex]E_{cell} - E^0[/tex]
=( 1.737 - 1.56 )V
= 0.177 V
≅ 0.18 V
Thus; from the following observation; there is an increase by 0.18 V in the cell voltage.
The voltage of the cell increased by 0.18 V.
The equation of the reaction is; 2AgCl(s) + Zn(s) → 2Ag(s) + 2Cl– + Zn2+
We know that;
E°cell = 1.36 - (-0.76) = 2.12 V
If the cells are both at 1M concentration the Ecell = E°cell = 2.12 V
When the concentration of Cl- decreased from 1 M to 0.001 M
Ecell = E°cell - 0.0592/n log Q
Substituting values;
Ecell = 2.12 V - 0.0592/2 log (1 × (0.001)^2)
Ecell = 2.298 V
Increase in voltage = 2.298 V - 2.12 V = 0.18 V
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A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
Answer:
144.7 g/mol would be the molar mass of the monoprotic acid
Explanation:
We can find the molar mass of the monoprotic acid from the data showed in the excersie. As every titration we can say that:
mEq acid = mEq base
mEq acid = 14.6 mL . 0.426 M
mEq acid = 6.2196 mEq
mEq = Volume (mL) . N = mass (g) / (EQ / 1000), where the EQ is the:
Molar weight / valence. For this case, as the acid is a monoprotic one, we assume Molar Weight = EQ
6.2196 mEq = 0.9 g / (EQ / 1000)
6.2196 mEq . EQ/1000 = 0.9 g
EQ = 0.9 g / 6.2196×10⁻³ = 144.7 g/mol
Describe what a mole is,
and what is meant by
a molar solution.
Answer:
A mole is an amount of a substance that contains 6.022✖️10^22 atoms of that substance
Or
Gram atomic masses,gram formula masses or gram formula masses are called one mole.
Molar solution or molarity is defined as the number of miles of so lutes dissolved per dm^3 of solution
Explanation:
I hope this will help you :)
What is the Ka of a 1.9 ~ 10-2 M
solution of carbonic acid (H2CO3)
with a pH of 3.88?
Ka = [ ? ] × 10!?)
Helllllp
Answer:
Ka = 9.2x10⁻⁷
Explanation:
The equilibrium of carbonic acid in water is:
H₂CO₃ ⇄ HCO₃⁻ + H⁺
Where Ka is defined as:
Ka = [HCO₃⁻] [H⁺] / [H₂CO₃]
The equilibrium concentration of the species is:
[H₂CO₃] = 1.9x10⁻² - X
[HCO₃⁻] = X
[H⁺] = X
As pH is -log[H⁺]
3.88 = -log[H⁺]
1.318x10⁻⁴ = [H⁺] = X
Replacing:
[H₂CO₃] = 1.9x10⁻² - 1.318x10⁻⁴ = 1.8868x10⁻²
[HCO₃⁻] = 1.318x10⁻⁴
[H⁺] = 1.318x10⁻⁴
Replacing in ka equation:
Ka = [1.318x10⁻⁴] [1.318x10⁻⁴] / [1.8868x10⁻²]
Ka = 9.2x10⁻⁷Answer: 9.2 x 10^-7
Explanation:
what is the mass of 1.5 mol of aluminum?
Answer:
40.47 g Al
Explanation:
In 1 mol of Al, there are 26.98 grams of Al, so Al is 26.98 g/mol.
Simply multiply 1.5 by 26.98 to get your answer.
Mixture A was made by mixing different components together, but it appears to have one phase. Which term best categorizes mixture A? -colloid -solution -emulsion -suspension
Answer:
Solution
Explanation:
A solution is generally defined as an homogeneous mixture.
What this means is that it has only a single phase.
A solution is generally formed as a result of a solute coming in contact with a solvent.
The solvent is the liquid while the solute is the solid. It is the solute that is dissolved in a solvent.
When a solution is thus formed from the interaction between the two , an homogeneous phase is formed.
Kindly note that all other options in the question are of 2 phases and thus are heterogeneous
Answer:
b. solution
Explanation:
on edg
___resources will run out one day.___the use of non-renewable
resources now will make supplies last longer. Fossil___
are non-renewable resources.
Burning fossil fuels releases___
which contributes to___
change.
Burning___
fossil fuel will help to reduce this effect. Accidents with oil rigs or___
can pollute the sea with oil and kill___
Nuclear fuel is non-renewable.It is used in___power stations.
These are very ___ to build and to ___ Accidents in nuclear power stations can release___ materials into the atmosphere
Nuclear fuel is non-renewable. It is used in
power stations. These are very
to build and to
Accidents in nuclear power stations can
release
materials into the atmosphere.
Answer:
Non Renewable__resources will run out one day._Slowing/stopping__the use of non-renewable
resources now will make supplies last longer. Fossil_Fuels__
are non-renewable resources.
Burning fossil fuels releases_Carbon Dioxide__
which contributes to_Pollution__
change.
Burning_less__
fossil fuel will help to reduce this effect. Accidents with oil rigs or_mines/power plants__
can pollute the sea with oil and kill_wildlife__
Nuclear fuel is non-renewable.It is used in_Nuclear__power stations.
These are very _Expensive__ to build and to _can cause__ Accidents in nuclear power stations can release__dangerous_ materials into the atmosphere
Nuclear fuel is non-renewable. It is used in
power stations. These are very
to build and to
Accidents in nuclear power stations can
release
materials into the atmosphere.
Explanation:
Definitions:
Fossil fuel- A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion
Fossil fuels produce large quantities of carbon dioxide when burned. Carbon emissions trap heat in the atmosphere and lead to climate change. In the United States, the burning of fossil fuels, particularly for the power and transportation sectors, accounts for about three-quarters of our carbon emissions.
Carbon dioxide from the burning of fossil fuels accumulates in the atmosphere, where it causes global warming. But it also affects our oceans. As carbon dioxide enters the ocean, it reacts with sea water to form carbonic acid. ... That's the equivalent in weight of 500 billion Volkswagen Beetles dumped at sea.
A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity.
What is the relationship between the period and the orbital radius? Select one: a. It is a direct relationship- As the period increases the orbital radius also increases. b. It is an inverse relationship- As the period increases the orbital radius decreases.
I'm pretty sure it's A, but then again I'm only in 8th grade. Sorry if this doesn't help:(
Gold’s natural state has a definite shape and a definite volume. What is gold’s natural state(s)?
Answer:
Solid
Explanation:
which two parts of the earth make up the lithosphere A. inner core and outer core B. mantle and outer core C. inner core and mantle D. crust and outer part of the mantle
Answer:
D. crust and outer part of the mantle
Explanation:
The lithosphere which is the solid, outer part of the Earth, consists of the crust and the uppermost mantle, which makes up the hard and rigid outer layer of the Earth.
Hope that helps.
Answer:
the answer is D
Explanation:
In an oxidation-reduction reaction, what happens to the electrons in the reduction process?
A.
Electrons are bonded.
B.
Electrons are gained.
С.
Electrons are lost.
D
Electrons are replaced.
Answer:
The answer is option B.
Electrons are gained
Hope this helps you