Suppose you have a container of liquid that has equilibrated with the air above its surface, such the PO2 in the liquid is approximately 160 mm Hg. You then very rapidly exchange the gas above the liquid for a new gas that has a total pressure of 1520 mm Hg (twice atmospheric pressure) and a PO2 of 160 mm Hg. What is the PO2 in the liquid immediately after the switch and one hour after the switch?
Answers
160 mmHg is the \(PO_2\) in the liquid immediately after the switch and one hour after the switch.
What is atmospheric pressure?It is the force exerted on a surface by the air above it as gravity pulls it to Earth.
Since air contains 20.95% \(O_2\).
So the pressure of \(O_2\) just after switching
\(=\frac{1520 X 20.95}{100} mm Hg\)
=15.20 X 20.95 mm Hg
=318.44 mm Hg
After one hour since \(O_2\) in air and liquid will attain equilibrium.
So, the final pressure of \(O_2\) will be the equilibrium of \(PO_2\) is 160 mmHg.
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Related Questions
A sample of H2 gas ( 12.28 g) Occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49g occupies _____ L at 353 K and 2.00atm
what does the sample weighing 9.49g occupy in liters
Answers
The sample weighing 9.49g occupies 68.2 L at 353 K and 2.00 atm.
What is H2 gas?
H2, hydrogen, is a chemical element having the atomic number 1. Hydrogen is considered the lightest element and also the most abundant in the universe.
At standard conditions, hydrogen would be a gas of diatomic molecules with the formula H2.
Hydrogen is colorless, tasteless, odorless, non toxic, and highly combustible.
Hydrogen is used for many industrial purposes, like refining petrol, producing fertilizers, treating metals, etc.
It is used for exploring space by using liquid hydrogen for rocket fuels, and also to power electrical systems on spacecrafts by using hydrogen fuel cells.
So, therefore, the sample weighing 9.49g occupies 68.2 L at 353 K and 2.00 atm.
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water can be made using the reversible reaction shown, which change would kee
p this reaction from shifting to form more of the product?
Answers
We can produce more products by;
A. Increasing the concentration of H₂ gas in the reaction vessel
B. Decreasing the temperature in the reaction vessel
C. Removing the H₂O from the reaction vessel as it forms
Is formation of water an exothermic reaction?
Water is created through an exothermic process. Heat energy is released when hydrogen gas (H2) and oxygen gas (O2) mix to make water (H2O). An exothermic reaction is characterized by this energy release.
The reaction's overall energy change is negative, which shows that energy is released. The reaction is exothermic because the extra energy is released as heat into the environment.
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Missing parts;
Water can be made using the reversible reaction shown. Which change would
keep this reaction from shifting to form more of the product?
2H₂+022H₂O + energy
A. Increasing the concentration of H₂ gas in the reaction vessel
B. Decreasing the temperature in the reaction vessel
C. Removing the H₂O from the reaction vessel as it forms
D. Increasing the temperature in the reaction vessel
answer each of the following as true or false in a double replacement reaction, if one of the products is insoluble, it is referred to as a precipitate. in a double replacement reaction, the anions and cations of two different molecules switch places, forming two new compounds. a double replacement reaction has two compounds on the reactant and product sides.
Answers
Answer 1: True Answer 2: True Answer 3: False
The specific heat of water is 4.184 J/gºC. How much energy (in
joules) is required to raise the temperature of 18g of H2O from
283K to 293K?
Answers
mark brainleist
If the following ions Mg2+, Cl-, Sr2+, OH- are placed in a test tube, the precipitate formed is
Answers
Answer:
I am so sorry if I am wrong but my guess is no precipitate is formed.
Explanation:
If the following ions\(Mg^{+2}\),\(Cl^{-}\), \(Sr^{+2}\), \(OH^{-}\) are placed in a test tube, the precipitate formed is \(Mg(OH)_{2}\)
What is precipitation reaction?The chemical reaction in which white color insoluble substance formed in water is called precipitation reaction.The white solid substance accumulate at the surface or separate from the reaction is called precipitate.Why participate forms?When particular cation and particular anion in a aqueous solution combine to form an insoluble ionic solid. The reaction form precipitate or not is decide by solubility rules.To learn more precipitate about
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How many grams S03
are needed to make 400g
H₂So4 in 49%
Answers
160 g of SO3 are needed to make 400 g of 49% H2SO4.
How many grams of SO3 are required to prepare 400 g of 49% H2SO4?The equation of the reaction for the formation of H2SO4 from SO3 is given below as follows:
\(SO_{3} + H_{2}O \rightarrow H_{2}SO_{4}\)
1 mole of SO3 produces 1 mole of H2SO4
Molar mass of SO3 = 80 g/mol
Molar mass of H2SO4 = 98 g/mol
80 g of SO3 are required to produce 98 og 100%H2SO4
mass of SO3 required to produce 400 g of 100 %H2SO4 = 80/98 × 400 = 326.5 g of SO3
Mass of SO3 required to produce 49% of 400 g H2SO4 = 326.5 × 49% = 160 g
Therefore, 160 g of SO3 are needed to make 400 g of 49% H2SO4.
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In terms of atomic structure, explain why the first ionization energy K is less than that of Ca ?
Answers
Why does the solubility of many substances increase with temperature? (Remember what an increase in temperature means on a microscopic scale.)
Answers
The solubility of many substances increases with temperature, there are exceptions. Some substances exhibit a decrease in solubility with temperature due to specific interactions or changes in solute-solvent interactions at higher temperatures.
The increase in solubility of many substances with temperature can be attributed to the effect of temperature on the kinetic energy and intermolecular interactions of molecules.
On a microscopic scale, an increase in temperature corresponds to an increase in the kinetic energy of molecules. As the kinetic energy increases, the molecules move more rapidly and collide with each other and with the solvent molecules more frequently and with greater force.
These increased collisions and kinetic energy result in enhanced molecular interactions and overcome the forces holding the solute particles together. This increased energy disrupts the intermolecular forces within the solute, allowing the solvent molecules to surround and interact more effectively with the solute particles, leading to greater solubility.
Additionally, an increase in temperature can cause solvent molecules to move more freely, reducing their cohesion and allowing them to interact more readily with solute particles.
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13. Why does DNA need to replicate?
a. so we have many copies in each cell
b. so we have a backup copy
C. so the newly formed cells each have a copy
d. so more copies are made after a mutation
Answers
Answer: C
Explanation:
When new cells form, they need a copy of DNA, which is why DNA is replicated.
Arrange the following acids from strongest to weakest:
HF, HBr, HCl, HI
Answers
Answer:
HI>HBr>HCL>HF
Explanation:
Consider the following chemical equilibrium: +N2g3H2g ⇌ 2NH3g Now write an equation below that shows how to calculate Kp from Kc for this reaction at an absolute temperature T. You can assume T is comfortably above room temperature. If you include any common physical constants in your equation be sure you use their standard symbols, found in the ALEKS Calculator.
Answers
Kp = Kc (RT) ^(-2)
Explanation:
For the reaction;
N2 (g) + 3H2 ⇄ 2NH3(g)
We can write;
Kc = [NH3]^2/[N2] [H2]^3
But
Kp = pNH3^2/pN2 . PH2^3
To convert from Kc to Kp
Kp = Kc (RT) ^Δn
where Δn is the change in number of moles going from reactants
to products.
For this reaction;
Δn = 2- (3+1) = -2
Kp = Kc (RT) ^(-2)
what happens to the valency when we move down in a periodic table of non metal and metal
Answers
The valency of elements tends to decrease as we move down the periodic table of non-metal and metal.
The ability of an element to combine is referred to as valency. It is the number of electrons that an elemental atom loses, gains, or shares with another atom to form a stable configuration of electrons.
The occasional table is organized so that components with comparable valencies are set in a similar gathering. Components in a similar gathering have similar number of valence electrons, which decides their substance properties.
The valency of the elements tends to decrease as we move down a periodic table of metals and non-metals. This is because the number of electron shells, or energy levels, increases as we move down a group. The peripheral electrons in a particle are the valence electrons.
The expanded distance between the core and the peripheral electrons brings about more vulnerable fascination between them. As a result, the atom becomes more reactive and can lose or gain electrons more easily.
For instance, in bunch 1 of the occasional table, the valency of the components diminishes as we drop down the gathering. The valencies of lithium (Li), sodium (Na), and potassium (K) are, respectively, 1, 1, and 1.
This is due to the fact that each possesses one valence electron. Because the outermost electron is further from the nucleus and therefore more likely to be lost or gained, the valency decreases as we move down the group.
In conclusion, as we move down the periodic table, from non-metal to metal, the valency of elements tends to decrease. This is because the nucleus and the outermost electrons are less attracted to one another as the energy levels rise.
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Why does the ionization energy decrease as you move down a group on the periodic table?
More neutrons in the nucleus
More electrons in the outer energy level
The size of the atom increases
Answers
Answer:
1) As you move down a group, first ionization energy decreases. WHY? Electrons are further from the nucleus and thus easier to remove the outermost one. 2) As you move across a period, first ionization energy increases.
so i think it is b
Explanation:
The general formula for balancing organic chemical reactions is written as:
Answers
Explanation:
The general formula for balancing organic chemical reaction is :
C3H8+5O2 = 3CO2+4H2O.
I really need to know the answer it will help
Answers
Answer:
so the answer is A 5.199mol please. rate. me brainliest. if its. correct
Explanation:
N=nL
\(3.131 \times {10}^{24} = n \times 6.022 \times {10}^{23} \\n = \frac{3.131 \times {10}^{24} }{6.022 \times {10}^{23} } \\ n = 5.199mol\)
28. After 3 substances are mixed, an odor emits
a. chemical change
b. physical change
c. thermal energy is used
a do
Answers
Answer:
a. chemical change
Explanation:
A chemical change can cause an odor, however a physical change cannot, and the use of thermal energy will only make an object colder, not give it an odor.
how many moles of carbon are in 7.90 grams of carbon
Answers
Convert something quickly: Using molecular mass calculator and the carbon molar mass, 1 g of carbon is equal to 0.083259093974539 mole.
The function of a carbon is what?Melting metals requires coke, which is produced from coal and charcoal, two forms of impure carbon. The steel and iron ore industries both rely heavily on it. The linings of furnaces, pencil leads, and electric motor brushes all include graphite.
Carbon's importance, how much?It would be impossible to sustain life on Earth without carbon. This is partially due to carbon's tendency for making bonds with other atoms, which enables flexibility in the structure and application of biomolecules such RNA and DNA, which are essential for life.
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.pls ans my question interested girl come 15++ come fast
Answers
Answer:
wait so do you need help with
Explanation:
Which group in the periodic table contains the three elements with the highest electrical conductivities?
A. Group 8
B. Group 12
C. Group 11
D. Group 7
Answers
Answer:
C Group 11
Explanation:
Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).
These elements show highest electrical conductivity.
Answer:
C Group 11
Explanation:
Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).
These elements show highest electrical conductivity.
Explanation:
In fruit flies the allele for long wings (L) is dominant and the allele for short wings (l) is recessive. What is the likely genotype of a fruit fly with long wings?
Group of answer choices
Either LL or Ll
Either Ll or ll
Only LL
Only ll
Answers
A fruit fly with long wings can have either LL genotype or Ll genotype.
Explanation:
The allele for long wings (L) is dominant, meaning that it will express itself over the recessive allele for short wings (l). A fruit fly can inherit one of each allele from each parent, resulting in three possible genotypes: LL (homozygous dominant), Ll (heterozygous), or ll (homozygous recessive).
If a fruit fly has long wings, then it must have at least one L allele. It could have inherited one L allele from one parent and another L allele from the other parent (LL genotype), or it could have inherited one L allele from one parent and a l allele from the other parent (Ll genotype). Therefore, the likely genotype of a fruit fly with long wings is either LL or Ll.
Which of the following molecules has a trigonal pyramidal shape?
CO
Ni ---CO
A.
СО
OBCI-S c
Xeo
O.
O C.
0-N
Answers
Answer:
Xeo
Explanation:
A is the molecules with the trigonal pyramid shape
An error during which cellular process would create a gene mutation?
Answers
An error during DNA replication would create a gene mutation.
During DNA replication, the genetic information in a cell is copied to make new DNA molecules. However, mistakes can occur during this process, leading to changes in the DNA sequence, which can result in a mutation. Mutations can also be caused by exposure to environmental factors, such as radiation or chemicals, which can damage the DNA molecule directly or affect the cellular processes involved in DNA replication.
Mutations can have a variety of effects on the organism, ranging from no effect to causing serious health problems or even death. Gene mutations can also be inherited from a parent, which can result in genetic disorders or predisposition to certain diseases. Therefore, it is important to understand the mechanisms of gene mutations and their potential impacts on organisms.
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The meaning of the word symptom:
Answers
The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.
Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.
Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.
It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.
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The Haber-Bosch process operates at reaction pressures of 200.0
atm and higher. What is this pressure in psi? fill in the blank
Answers
sana maka tulong ❣️
when electric current is applied externally, which of the following produces a redox reaction: A wood. B. electrolytic C. Solid
Answers
Answer:
the answer is a
Explanation:
Anyone know this ???
Answers
\(\huge\boxed{OptionB}\)
_____________________________________VESSEL A:The superior vena cava (SVC) is the superior of the two venae cavae, It is located above inferior vena cava and it returns the deoxygenated blood from the systemic circulation to the right atrium of the heart.
----------------------------------------------------------------------VESSEL C:The aorta is the main artery that carries blood away from your heart to the rest of your body.
----------------------------------------------------------------------ATRIUM D:The Left Atrium is one of the two atriums, it receives the oxygenated blood from the lungs via Pulmonary vein.
----------------------------------------------------------------------VENTRICLE E:The Left Ventricle is one of the two ventricles, it receives the oxygenated blood by the Left atrium through the mitral valves. From the ventricle oxygenated blood is provided to the whole body.
----------------------------------------------------------------------VESSEL B:Pulmonary Artery is one of the two pulmonary vessels which connect the blood heart and lung. Pulmonary Artery takes the deoxygenated blood from the Right ventricle to the Lungs from the oxygenation.
_____________________________________Best Regards,'Borz'If a gas sample has a pressure of 74 ka at 87 L, what would the new volume be if the pressure changed to 929 kPa?
Answers
Answer:
La ley de los gases ideales relaciona cuatro propiedades macroscópicas de los gases ideales (presión, volumen, número de moles y temperatura). Si conocemos los valores de tres de estas propiedades, podemos utilizar la ley de los gases ideales para conocer la cuarta. En este video, usaremos la ley de los gases ideales para resolver el número de moles (y en última instancia de moléculas) en una muestra de un gas
Explanation:
Potassium chlorate decomposes when heated to produce potassium chloride and oxygen gas. If 15.7 L O2, STP, are produced, how many grams of potassium chlorate were used in the reaction?
Answers
\(57.27\) grams of potassium chlorate were used in the reaction to produce \(15.7 L\) of \(O_2\) gas at STP.
What is the balanced chemical equation?The balanced chemical equation for the decomposition of potassium chlorate is:
\(2KClO_3(s) \rightarrow 2KCl(s) + 3O_2(g)\)
From the equation, we can see that 2 moles of \(KClO_3\) produce \(3\) moles of \(O_2\) . Therefore, the number of moles of \(KClO_3\) can be calculated as:
moles of \(KClO_3 =\) (moles of \(O_2\) produced) \(\times (2/3)\)
At STP (standard temperature and pressure), \(1\) mole of any gas occupies \(22.4 L\) of volume. Therefore, \(15.7 L\) of O2 at STP corresponds to:
moles of \(O_2\) produced \(= (15.7 L) / (22.4 L/mol) = 0.7018 mol\)
Substituting this value into the above equation, we get:
moles of \(KClO3 = (0.7018 mol) \times (2/3) = 0.4679 mol\)
The molar mass of \(KClO_3\) is \(122.55 g/mol\) . Therefore, the mass of \(KClO_3\) used in the reaction can be calculated as:
mass of \(KClO_3\) = (moles of \(KClO_3\)) x (molar mass of \(KClO_3\))
\(= (0.4679 mol) \times (122.55 g/mol)\)
\(= 57.27 g\)
Therefore, \(57.27\) grams of potassium chlorate were used in the reaction to produce \(15.7 L\) of \(O_2\) gas at STP.
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How many miles of O2 are needed to burn 1.45 mil of C8H18
Answers
Answer:
\(n_{O_2}=18.1molO_2\)
Explanation:
Hello there!
In this case, according to the combustion of octane:
\(C_8H_1_8+25/2O_2\rightarrow 8CO_2+9H_2O\)
We can see there is a 1:25/2 mole ratio of octane to oxygen; therefore, we can calculate the moles of oxygen via the following stoichiometric factor:
\(n_{O_2}=1.45molC_8H_1_8*\frac{25/2molO_2}{1molC_8H_1_8} \\\\n_{O_2}=18.1molO_2\)
Best regards!
If there is a name/surname you can't make out due to a speaker's manner of speech, what are you supposed to do?
Answers
We can call a person by the word gentleman and Sir or from his/her real name.
If there is a name/surname you can't make out due to a speaker's manner of speech then I will call him gentleman or Sir or I will ask him his real name. Gentleman is a word that is used for noble person and Sir word is also used in order to give someone respect.
Call a person with his real name is also comes under the manner of speech so we can conclude that we can call a person by the word gentleman and Sir or from his/her real name.
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