what is the value of the equilibrium constant Kc for the following reaction at the temperature of the mixture?
2No2(g) ->N2O4(g)
analysas of an equilibrium mixture of N2O4 (g) gave the following results:
[NO2(g)]= 4.622x 10^-3M
[N2O4(g)]= 3.222x 10^-3M
Answers
the value of the equilibrium constant Kc for the given reaction at the temperature of the mixture is 1.78.
The value of the equilibrium constant Kc for the given reaction at the temperature of the mixture is 1.78. Kc is determined based on the concentrations of reactants and products at equilibrium.
Analysis of an equilibrium mixture of N2O4 (g) gave the following results:
\([NO2(g)] = 4.622x M[N2O4(g)] = 3.222x M\)
The concentration of NO2 and N2O4 in the equilibrium mixture was calculated, which are known as equilibrium concentrations.
Substitute the equilibrium concentrations into the equation below to calculate Kc:
\([N2O4]/[NO2]= 3.222 * / (4.622)= 1.78\)
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Related Questions
Design an electrolytic cell using the following to half-reactions: Ba2+(aq) + 2 e (aq) → Ba(s) [°=-1.57 V Ni2+(aq) + 2 e (aq) → Ni(s) E° = -0.25 V Which metal will plate out (form a solid)? a) Ni b) Ni2+ c) Ba2+ d) Ba e) e-
Answers
To design an electrolytic cell using the given half-reactions, we need to connect the two half-cells through a wire and allow the flow of electrons from the more negative E° value (-0.25 V) to the more positive E° value (-1.57 V).
In this case, Ni2+ will plate out (form a solid) at the cathode because it has a more negative E° value (-0.25 V) compared to Ba2+ (-1.57 V). This means that Ni2+ ions will accept electrons from the cathode and get reduced to Ni metal.
At the anode, Ba will be oxidized to Ba2+ ions as it has a more positive E° value (-1.57 V) compared to Ni2+ (-0.25 V). This means that Ba atoms will lose electrons and form Ba2+ ions, which will then move towards the cathode to get reduced to Ba metal. However, since Ni2+ is more likely to accept electrons at the cathode, Ba will not plate out as a solid.
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Can you identify the function of these components of a cell's plasma membrane? check all statements that are correct. (choose 4)
Answers
The plasma membrane of the cell serves as a protective covering, has receptors that permit cell-to-cell communication, and permits specific chemicals or proteins to enter the cell.
The outer barrier of cells is formed by the plasma membrane. The membrane is tiny, incredibly thin, and porous. Cytoplasm is a clear, jelly-like material found inside every cell. Organelles from cells can be found in it, and it is viscous. The nucleus is in charge of the cell's overall functionality. Plasma membranes contain embedded proteins that assist in carrying out a number of tasks. The plasma membrane mostly accomplishes the following tasks: - Recognizes cells and aids in the movement of chemicals. helps to safeguard the cell by preserving a healthy environment inside the cell.
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The complete question is -
Can you identify the function of these components of a cell's plasma membrane? check all statements that are correct.
a The cell's plasma membrane acts as a protective layer
b The cell's plasma membrane does not acts as a premessive layer
c The cell's plasma membrane allows harmful germs
d The cell's plasma membrane does not exist in humans
Find the mass, in grams, of 11.2 L H2 at STP
Answers
11.2L
22.4L/mol
=48g/mol
Note: At s.t.p., 1 mole of any gas occupies a volume of 22.4 L.
omplete the nuclear equation describing the synthesis of mendelevium-256 by the bombardment of einsteinium-253 by α particles.
Answers
The complete nuclear equation is;
253/99 Es + 4/2He → 256/101 Md + 1/0n
What is nuclear reaction equation?
The atomic and mass numbers of the particles involved are displayed in a nuclear equation, which is a symbolic depiction of a nuclear process. It is used to explain the alterations that take place inside atomic nuclei during nuclear reactions, such as radioactive decay, fusion, and fission.
Typically, nuclear equations have two sides that are divided by an arrow. On the left side of the arrow are the reactants, or initial particles, and on the right side are the products, or final particles. The arrow denotes the process of transformation or reaction.
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give the systematic name for the compound ba no3 2
Answers
The systematic name for the compound Ba(NO3)2 is barium nitrate. Barium nitrate is an inorganic salt with the chemical formula Ba (NO3)2. It is a colorless, odorless, and crystalline solid that is highly soluble in water. The compound is formed by combining one atom of barium and two ions of nitrate.
The name “barium” comes from the Greek word “barys,” which means “heavy,” and is a reference to its high density. The term “nitrate” refers to the polyatomic ion NO3-, which is composed of one nitrogen atom and three oxygen atoms. Barium nitrate is commonly used in pyrotechnics, as it is a powerful oxidizing agent that produces a bright green flame when ignited.
The systematic naming of inorganic compounds is based on the rules set out by the International Union of Pure and Applied Chemistry (IUPAC). The name of an ionic compound is composed of the cation name followed by the anion name. In the case of barium nitrate, “barium” is the name of the cation, while “nitrate” is the name of the anion.
Therefore, the systematic name for the compound Ba(NO3)2 is barium nitrate.
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In a reaction, 42.6 g of chromium(iii) oxide reacts with 15.1 g of aluminum to produce chromium and aluminum oxide. if 29.1 g of chromium is produced, what mass of aluminum oxide is produced?
Answers
42.6 g of chromium(iii) oxide reacts with 15.1 g of aluminum to produce chromium and aluminum oxide. if 29.1 g of chromium is produced, then the mass of aluminum oxide is produced 14.6 g,
Here's how,
Cr2O3 + 2Al ⇄ Al2O3 + 2Cr.....(1) (take this equation 1)
∴ In the above chemical reaction, Aluminum oxide is produced,
Given, Mass of Chromium(iii) oxide = 42.6 g,
Mass of Aluminum = 15.1 g, and
Mass of Chromium = 29.1 g,
Hence, we have to find oxygen, before finding the mass of aluminum oxide.
∵ Mass of Cr2O3 = 42.6 g,
⇒ (29.1 × 2)+(O3) = 42.6
⇒ 58.2 + O3 = 42.6
⇒ O3 = 42.6 - 58.2 ⇒ - 15.6 g
Put O3 in equation (1), we get,
Now, put the atomic mass of O in equation 1, we get,
∴ Al2O3 ⇒ [(29.1 × 2) + {(-5.2) × 3}]
⇒ 14.6 g
Therefore, the Mass of Aluminum Oxide produced is 14.6 g.
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The decomposition of 65.9 g ammonium nitrate yields how many liters of dinitrogen monoxide at 2.65 atm and 303 k?
(N= 14.01 g/mol, H= 1.008 g/mol, O=16.00 g/mol)
NH4NO3(s) -> N2O(g)+2H2O(g)
Hint: R = 0.0821 L atm/(mol K)
Answers
It’s 7.72 it took a while but I found the answer
What fossil helped support Wegener's hypothesis of continental drift?
A. Gondwanaland
B. Kannemeyerid
C. Mesosaurus
D. Glossopteris
Answers
Answer:
Glossopteris
Explanation:
Glossopteris is a fossil fern that helped support Wegener's hypothesis.
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What is the Law of Definite Composition and how does it apply to pure substances and mixtures?
Answers
Answer:
The Law of Definite Proportions ensures that chemical compounds are always created using the same proportions, regardless of the amount of the compound which is being made
what is the energy needed to start a chemical reaction?
Answers
Answer:
Activation energy is called the energy required to initiate a chemical reaction.
Explanation:
for the equation A+B produces C+D of you are given the mass of B and asked to calculate the number of moles of C produced you are solving a
Answers
The moles of C can be obtained by finding the moles of B and resorting to the stoichiometry of the reaction.
What is the stoichiometry of the reaction?The question is incomplete but by the use of the stoichiometry of the reaction we can be able to obtain the number of moles of B and then use it to find the number of moles of C as required.
Stoichiometry is the calculation of the quantities of reactants and products in a chemical reaction. It involves using the balanced chemical equation to determine the relative amounts of each substance involved in the reaction.
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why do atoms combine to form compund?
Answers
Answer:
See below
Explanation:
The following reasons tell why atom combine to form compounds:
1) They want to follow octet or duplet rule and attain the noble gas configuration.
2) They combine to form compounds because of the electrostatic attraction between them.
3) They form compounds to lower their energy and to become stable.
\(\rule[225]{225}{2}\)
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~AH1807Determine the [OH−] , Ph, and POH of a solution with a [H+] of 0. 00017 m at 25 °C.
Answers
The answer is \(\underline{12.954}\end{aligned}$$\)
\(\begin{aligned}&\mathrm{pH}=\underline{1.046} \\&{\left[\mathrm{OH}^{-}\right]=\underline{1.11 \times 10^{-13} \mathrm{M}}} \\&\mathrm{pOH}=\underline{12.954}\end{aligned}\)
Given:
\(\left[\mathrm{H}^{+}\right]=0.090 \mathrm{M}=9 \times 10^{-2} \mathrm{M} ; \mathrm{T}\\=25^{\circ} \mathrm{C}$$\mathrm{As}, \mathrm{pH}=-\log \left[\mathrm{H}^{+}\right]$\Rightarrow \mathbf{p H}=-\log \left(9 \times 10^{-2}\right)=\underline{1.046}$$\)
The equation for the self-ionization constant of water is
\($$\mathrm{Kw}=\left[\mathrm{H}^{+}\right]\left[\mathrm{OH}^{-}\right]$$and, $\mathrm{pKw}=\mathrm{pH}+\mathrm{pOH}$\)
Since at room temperature,
\($25^{\circ} \mathrm{C}: \mathrm{Kw}=1.0 \times 10^{-14}, \mathrm{pKw}=14$\)
\(\therefore \mathrm{Kw}=\left[\mathrm{H}^{+}\right]\left[\mathrm{OH}^{-}\right]=1.0 \times 10^{-14}$$\\\Rightarrow\left[\mathrm{OH}^{-}\right]=\left(1.0 \times 10^{-14}\right) \div\left[\mathrm{H}^{+}\right]\\=\left(1.0 \times 10^{-14}\right) \div\left[9 \times 10^{-2}\right]\\=0.111 \times 10^{-12}=1.11$$\times 10^{-13} \mathrm{M}$\)
And
\($$\begin{aligned}&\mathrm{pH}+\mathrm{pOH}=\mathrm{pKw}=14 \\&\Rightarrow \mathrm{pOH}=14-\mathrm{pH}=14-1.046=\underline{12.954}\end{aligned}$$\)
What is Poh and PH linked formula?
Take the negative log of the hydronium ion concentration and use that value to compute pH. Simply subtraction the pH from 14 yields the pOH value. The negative log of the concentration of hydroxide ions should be used to get the pOH. Simply subtraction 14 from pOH yields the pH.So the more about Poh and PH linked formula.
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write the correct formulas that indicate only a physical change has taken place
1. 2NaCl + MgO -->
2. 2H2 + O2 -->
Answers
2NaCl + MgO → Na₂O + MgCl₂ and 2H₂ + O2 →2H₂O the correct formulas that indicate only a physical change has taken place
In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition
2NaCl + MgO → Na₂O + MgCl₂ has change the color as well as appearance and in the 2H₂ + O2 →2H₂O has also change in the physical changes
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why a dipole develops in a molecule
Answers
Answer:
Dipole interactions occur when partial charge form within a molecule because of the uneven distribution of electrons.polar molecules align so that the positive end of one molecule interacts with the negative end of another molecule.
Answer: Uneven distribution of electrons in a
Molecule.
Explanation: Q. What’s the dipole-dipole interaction ?
SOL.-
CONCEPT-
Dipole-dipole Forces -
Intermolecular interactions are necessary for the stability of the molecule. There are many types of intermolecular forces, and dipole-dipole forces are part of these forces them.
Dipole-dipole forces, also known as dipole-dipole interactions. The electrostatic forces between two permanent polar molecules is known as dipole- dipole force. Generally, the positive side of one molecule is attracted to the negative side of another molecule. The two molecules come closer, and add for increasing the stability of the substance. This type of interaction is different from a regular ionic bond or a covalent bond because there is no transfer or sharing of electrons.
Causes of a Dipole-dipole Interaction-
Dipole-dipole interaction arises due to the unlike distribution of electrons in a molecule. The electrons are assembled at one end of the molecule. Thus, the molecule get a partially negative charge at one end and a partial positive charge at the another end. That process making them polar. Generally, two polar molecules with opposite nature charges will attract one another.
Diagram-
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Which phrase describes air pressure?
Answers
Answer: atmospheric pressure
Explanation:
i hope it helps :)
Answer:
The answer B: decreases as altitude decreases
Hope this helps
What volume of 0. 125 m kmno4 is required to yield 0. 180 mol of potassium permanganate, kmno4?.
Answers
1.44 liters of 0.125 M \(KMnO4\) solution is required to yield 0.180 mol of \(KMnO4\).
To determine the volume of 0.125 M \(KMnO4\) solution required to yield 0.180 mol of \(KMnO4\), we can use the following formula:
moles = concentration x volume
We can rearrange this formula to solve for volume:
volume = moles / concentration
First, we can calculate the volume of 0.125 M \(KMnO4\) solution that contains 0.180 moles of \(KMnO4\):
volume = moles / concentration
volume = 0.180 mol / 0.125 mol/L
volume = 1.44 L
Therefore, 1.44 liters of 0.125 M \(KMnO4\) solution is required to yield 0.180 mol of \(KMnO4\).
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If a 1.0x10-5 L sample of agas at 2.0x106 atm isreleased until it is equal to0.275 atm, what would thenew volume of the gas be?
Answers
Answer:
Explanation:
Here, we want to get the new volume of the gas
What we need to know is the law that connects volume and pressure at constant temperature
The law that supports this is the Boyle's law
It states that the volume of a given mass of gas is inversely proportional to its pressure at constant temperature
Mathematically, we can have this as represented as:
\(\begin{gathered} P_1V_1=P_2V_2 \\ P_1\text{ = 2.0 }\times10^{6\text{ }}\text{ atm} \\ V_1\text{ = 1.0 }\times10^{-5}\text{ L} \\ P_2\text{ =0.275 atm} \\ V_2\text{ = ?} \end{gathered}\)We can proceed mathematically to solve as follows;
\(undefined\)What would a chemist most likely study about a car?
Answers
Answer:
I believe it's the chemical composition of the fuel and different fluids such as the coolant of the radiator
Explanation:
Chemists may discover more sustainable compounds that produce less waste material or that release more energy for the least amount of fuel. For coolants, fluids with greater heat retention that can absorb heat and direct it to the radiator in the most efficient manner. This is usually paired with engineering.
In an ecosystem, why can only one species fill an ecological niche?
Answers
Answer:
Explanation:es porque las especies con nichos idénticos tienen las mismas necesidades, lo que significa que competirían exactamente por los mismos recursos.
Although CaCO3 has a relatively small solubility product, it is quite soluble in the presence of ?
Answers
Calcium carbonate (CaCO₃) is quite soluble in the presence of acidic solutions inspite of having small solubility product .
Step-by-step explanation:
1. Solubility product: This is the equilibrium constant for a solid substance dissolving in an aqueous solution. It represents the concentration of the dissolved ions when the solution is at equilibrium.
2. Calcium carbonate (CaCO₃): This is a common compound found in rocks, shells, and many other natural sources. It is sparingly soluble in water, which means only a small amount dissolves to form a saturated solution.
3. A substance is considered soluble if it can dissolve in a solvent, such as water, to form a homogeneous mixture called a solution.
Acidic solutions: Calcium carbonate is more soluble in acidic solutions because the acid reacts with the CaCO₃, forming soluble calcium ions (Ca²⁺) and an acidic anion (e.g., CO₂ and H₂O when reacting with a strong acid like HCl). This reaction increases the solubility of calcium carbonate by removing it from the equilibrium, allowing more CaCO₃ to dissolve in the solution.
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HELP
The kingdom Protista contains a diverse group of organisms. Compare and contrast these four protists in terms of their basic characteristics. Drag and drop the correct descriptions/terms into each column.
Column A
1.
Amoeba:
2.
Paramecium:
3.
Euglena:
Column B
a.Cilia for locomotion
b.Flagella for locomotion
c.No distinct shape; Pseudopod for locomotion
Answers
The kingdom Protista organisms like amoeba has no distinct shape uses pseudopod for locomotion,paramecium has cilia for locomotion and euglena has flagella for locomotion.
What is kingdom Protista?Organisms of kingdom Protista are simple eukaryotic organisms which are neither plants nor animals or fungi.These are unicellular organisms but can also exist in the form of colonies.
They live in water or damp terrestrial zones.Some of the organisms of kingdom Protista have cilia or flagella which helps the organism in locomotion.They are autotrophic or heterotrophic in nature.
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HELP ASAP WILL MARK BRAINLIEST!!!
Answers
Answer:
22.4/3.8=5.89
Explanation:
if equal masses of ch4(g) and o2(g) are placed in a container, exerting a total pressure of 600 torr, what is the partial pressure of ch4(g) ?
Answers
When equal masses of ch4(g) and o2(g) are placed in a container, exerting a total pressure of 600 torrs, then the partial pressure of ch4(g) will be 300torr
Let, x gm o2 and ch4 are present
Given,
Total Pressure = 600torr
Number of moles of o2 = x/16
Number of moles of Ch4 = x/16
According to the Daltons law of partial pressure,
Pa =Xa*Ptotal
Xa is the mole fraction of a
Xch4 =\(\frac{x/16}{x/16 +x/16}\)
=1/2 = 0.5
Pch4 = 0.5×600 = 300torr
Therefore the partial pressure of ch4 will be 300 torr when a total pressure of 600 torr is applied to the mixture.
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What is the most reactive element
Answers
Answer:
fluorine
Explanation:
Carbon cycle – What are the main reservoirs
of the carbon cycle? Where do the inorganic and organic carbon
cycles interact? What are the major differences and similarities
between the inorganic and organic carbon?
Answers
The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.
The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.
Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.
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The enthalpy of vaporization of methanol is 35. 27 kJ mol-1 at its normal boiling point of 64. 1°C. Calculate (a) the entropy of vaporization of methanol at this temperature and (b) the entropy change of the surroundings
Answers
Answer:
influence of a business invironment
24. What type of cloud is in the picture?
cumulus
cirrus
altostratus
stratus
Answers
Explanation:
alto cumulus is the pic
someone, please help me find the missing planets
Answers
Answer:
planet A: Saturn
planet B: Mars
planet C: Venus
planet D: Uranus
Explanation:
Answer:
A is Saturn
B is Mars
C is Venus
D is Neptune
Explanation: Saturn is known for its rings and it's the 6th planet on the Solar System. Mars is indeed quite red and it is in the inner comet belt
C is Venus because a day is longer than a year on Venus and D is Neptune because it's a blue and green gas giant.
H3PO4 + Ca(OH)2 → Ca(H2PO4)2 + H2O
Answers
Given question is incomplete. The complete question is as follows.
Balance the following equation:
\(H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + H_2O\)
Answer: The balanced chemical equation is as follows.
\(2H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + 2H_2O\)
Explanation:
When a chemical equation contains same number of atoms on both reactant and product side then this equation is known as balanced equation.
For example, \(H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + H_2O\)
Number of atoms on reactant side:
H = 5
P = 1
O = 6
Ca = 1
Number of atoms on product side:
H = 6
P = 2
O = 9
Ca = 1
In order to balance this equation, we will multiply \(H_3PO_4\) by 2 on reactant side and we will multiply \(H_2O\) by 2 on product side. Hence, the balanced chemical equation is as follows.
\(2H_3PO_4 + Ca(OH)_2 \rightarrow Ca(H_2PO_4)_2 + 2H_2O\)