If you place 20.4 g of CaCO3 in a 9.56-L container at 1073 K, what is the pressure of CO2 in the container
Answers
If you place 20.4 g of CaCO₃ in a 9.56-L container at 1073 K, the pressure of CO₂ in the container is 1.88 atm.
First, we need to calculate the number of moles of CaCO₃. The molar mass of CaCO₃ is 100.0869 g/mol, so 20.4 g of CaCO₃ is equal to 0.2036 mol of CaCO₃. The balanced chemical equation for the thermal decomposition of CaCO₃ is:
CaCO₃(s) → CaO(s) + CO₂(g)
According to this equation, 1 mol of CaCO₃ produces 1 mol of CO₂. Therefore, 0.2036 mol of CaCO₃ will produce 0.2036 mol of CO₂.
Next, we can use the ideal gas law to calculate the pressure of CO₂ in the container. The ideal gas law is:
PV = nRT
where P is the pressure of the gas in atm, V is the volume of the container in L, n is the number of moles of the gas, R is the ideal gas constant (0.08206 L·atm/mol·K), and T is the temperature in K.
We can rearrange this equation to solve for P:
P = nRT/V
Substituting the values we have calculated, we get:
P = (0.2036 mol) × (0.08206 L·atm/mol·K) × (1073 K) / (9.56 L)
P = 1.88 atm
Therefore, the pressure of CO₂ in the container is 1.88 atm.
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Related Questions
it is on SWRO plant with a capacity of 50000m3/day the tds of the feed is 41690ppm implying a chloride ion level of around 23000ppm the temperature of the feed is around 18°C in March and 27°C in September the reject has a tds of 64500ppm . the pressure is 70 bar, that plant started to produce water in June 2003 and corrosion problem appeared already few months of service, two type of corrosion could be established, one being crevice corrosion in 11/2" high pressure connector underneath victauling coupling example the same type of problem that have been corrosion in 316L and 317L high pressure piping seven out of 700 such connector were reported to have suffered this type crevice corrosion after 4 months only, provide the remedy to end the problem
Answers
To address the crevice corrosion issue in the high-pressure connectors and piping of the SWRO plant, several remedies can be considered, A SWRO (Sea Water Reverse Osmosis) plant is a water desalination facility that uses reverse osmosis technology to treat seawater or brackish water and produce freshwater
Material Selection: Evaluate the material compatibility with the operating conditions, especially the chloride ion concentration and temperature. Consider using corrosion-resistant alloys such as duplex stainless steel (e.g., 2205) or super duplex stainless steel (e.g., 2507) that have better resistance to chloride-induced corrosion compared to 316L or 317L stainless steel.
Surface Treatment: Apply appropriate surface treatments to enhance corrosion resistance. Passivation or pickling can remove surface contaminants and create a protective oxide layer on the metal surface, reducing the susceptibility to corrosion.
Design Modifications: Evaluate the design of the connectors and piping to minimize crevices and stagnant areas where corrosion can occur. Smooth transitions, avoiding sharp angles or crevices, can help promote better fluid flow and prevent the accumulation of corrosive substances.
Cathodic Protection: Implement cathodic protection methods, such as impressed current or sacrificial anodes, to protect the connectors and piping from corrosion. This technique involves introducing a more easily corroded metal (anode) to the system, which sacrifices itself to protect the connected metal (cathode) from corrosion.
Monitoring and Maintenance: Regularly monitor the corrosion levels and condition of the connectors and piping. Implement a maintenance program that includes periodic inspections, cleaning, and repairs, if necessary, to prevent corrosion from progressing.
It is important to consult with corrosion experts and engineers who specialize in SWRO plant operations to assess the specific conditions, perform material testing, and provide tailored solutions to mitigate the crevice corrosion problem effectively.
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What is the advantage of slowly grown large crystals over quickly grown small crystals?
Answers
Slowly grown large crystals have several advantages over quickly grown small crystals. Firstly, large crystals are often more pure and uniform in structure, as they have had more time to grow and form.
This means they are less likely to have impurities or defects that can affect their properties and performance. Additionally, large crystals often have greater mechanical strength and durability than small crystals, making them more suitable for certain applications. Furthermore, large crystals can have unique optical, electronic, and magnetic properties that are not present in small crystals, making them potentially useful in a range of industries including electronics, optics, and pharmaceuticals. Overall, slowly grown large crystals offer a range of advantages over quickly grown small crystals, and are often preferred for certain applications where purity, uniformity, strength, or unique properties are important.
The advantage of slowly grown large crystals over quickly grown small crystals lies in their superior quality and structure. Large crystals formed through slow growth have fewer defects, improved purity, and greater mechanical strength. This results in enhanced performance in various applications, such as electronics, optics, and pharmaceuticals. Additionally, large crystals can provide more accurate and consistent results in scientific experiments, making them highly desirable in research and development settings.
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Destabilization that occurs in a molecule when two non bonded atoms are too close together is called?
Answers
Destabilization that occurs in a molecule when two non bonded atoms are too close together is called Van der Waals repulsion.
When two non bonded atoms come close together then in such situation there are two types of forces that come into play.
First one is Van der Waal attractive forces and the second one is van der Waal repulsion forces.
Van der Waal attractive forces are the forces of attraction between the electronic cloud of one atom/molecule with the nucleus of the other atom/molecule and van der Waal repulsive forces are the force of repulsion between the electronic cloud of the both the atoms/molecules and the repulsion between the nucleus of both the atoms/molecules.
Attractive forces causes stabilization whereas repulsive forces causes destabilization.
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Calculate the freezing point of a nonionizing antifreeze solution containing 388 g ethylene glycol, C2H6O2, and 510 g of water.
Answers
Answer:
T° freezing solution = -22.8°C
Explanation:
To solve this problem we apply, the Freezing Point Depression. This is a colligative property which its formula is:
T° freezing pure solvent - T° freezing solution = Kf . molality . i
i = Van't Hoff factor.
We have been informed is a nonionizing solute, so i = 1
Our solute is ethylene glycol, so le'ts determine the moles to get molality
388 g . 1 mol / 62.07 g = 6.25 moles
molality (m) = moles of solute /kg of solvent
We convert mass of solvent, water, to kg → 510 g . 1kg /1000g = 0.510 kg
6.25 mol /0.510kg = 12.25 m
We replace at formula → 0°C - T° freezing solution = 1.86°C/m . 12.25 m . 1
T° freezing solution = -22.8°C
How many moles of helium are contained in 9.85 x 1023 atoms?
9.85 x 1023 atoms
Answers
Answer:
10076.55
Explanation:
diagram of paper chromatography from a chemistry textbook
Answers
A member of an alien species is discovered and placed in a bathtub that’s already full of water;
The alien weighs 34-kg and 42.33 L of water overflows. What is the approximate density and specific gravity of the alien’s body?
Answers
The approximate density of the alien's body is 803.15 kg/m^3, and its specific gravity is approximately 0.803.
To calculate the density of the alien's body, we need to determine the mass and volume of the body.
Weight of the alien = 34 kg
Volume of water overflowed = 42.33 L
First, let's convert the volume of water overflowed from liters to cubic meters:
42.33 L = 42.33 * 10^(-3) m^3
Since the volume of water overflowed represents the volume of the alien's body, we can calculate the density using the formula:
Density = Mass / Volume
Density = 34 kg / 42.33 * 10^(-3) m^3
Density ≈ 803.15 kg/m^3
The specific gravity is the ratio of the density of the alien's body to the density of water. The density of water is approximately 1000 kg/m^3.
Specific Gravity = Density of alien's body / Density of water
Specific Gravity ≈ 803.15 kg/m^3 / 1000 kg/m^3
Specific Gravity ≈ 0.803
Therefore, the approximate density of the alien's body is 803.15 kg/m^3, and its specific gravity is approximately 0.803.
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the modern periodic table arranges the elements according to their atomic number and shared properties. if you wanted to predict which elements are explosive how would you organize the periodic table?
Answers
High explosive elements should be placed on the right side of the periodic table and lower explosive elements should be placed on the left side.
We will organize the periodic table starting from least explosive to high explosive just like the arrangement is done in the modern periodic table in which elements having lower atomic numbers are present on the left side of the periodic table whereas the elements having higher atomic numbers are placed on the right side of the periodic table.
What is the periodic table?
The periodic table is the tabular arrangement of all the chemical elements on the basis of their respective atomic numbers.
Why the periodic table is important?
The periodic table of elements puts all the known elements into groups with similar properties.
Thus, lower explosive elements are placed on the left and high explosive elements are placed on the right of the periodic table.
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Why are earthworms called as “friends of farmers”? Answer in no less than 4 sentences
Answers
Answer:
Organic matter composted with earthworms, often known as vermicompost, has been demonstrated in studies to have disease-suppressing qualities. The earthworms loosen the soil and enrich it with humus. As a result, they are known as farmer's pals. They help the crops grow healthier and over the time have earned farmers trust.
Explanation:
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True or False: Electrons are significantly smaller than protons and neutrons, we can ignore electrons when we consider the physical property of an atom.
Answers
Answer:
true
Explanation:
Rank the following atoms according to decreasing first ionization energy. (i.e. 1 = highest and 4 = lowest)
Options are Al, P, Mg, K?
Answers
The decreasing order of ionization energy will be Mg >Al >P>K.
Ionization energy sometimes referred to as ionization potential, would be the amount of energy it takes to eliminate an electron from a single, isolated atom or molecule.
On moving top to bottom in the periodic table, ionization energy will decrease rapidly.
Al =13 (group 3)
P =15 (group 5)
Mg =12 (group 2)
K =19 (group 1)
The decreasing order of ionization energy will be Mg >Al >P>K.
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Which acid/base pair will give an equivalence point that cannot be predicted solely by a general knowledge of acid and base strength
Answers
The acid/base pair that give equivalence point that Cannot be predicted by general knowledge is NaOH and HCI ONH.
What is an Acid and base?An Acid is a substances that is corrosive in nature and turn blue lithmus paper to red which it react with base to produce salt and water.
Acid dissolve metals.
Base is a substance that turn red lihthmus paper to blue and react with acid to produce salt and water.
Therefore, The acid/base pair that give equivalence point that Cannot be predicted by general knowledge is NaOH and HCI ONH.
The question is incomplete as the options were not given. The options were gotten from another website.
Select the correct answer below:
ONaOH and HCI ONH,
HC ONH, and CH, COOH
NaOH and Christmas, COOH
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A clumsy student made a mistake and not all the gas released from the lighter was caught in the graduated cylinder. a. Which specific measurement(s) will be affected? b. Will this increase, decrease, or not change the molar mass calculation? Explain.
Answers
The specific measurement that will be affected is the volume of gas collected in the graduated cylinder. Since not all the gas was caught, the volume measured will be less than the actual volume of gas released. This will not change the molar mass calculation.
The molar mass is calculated by using the mass of the gas and the volume of the gas collected. Even though the volume measured was less than the actual volume, the mass of the gas collected should still be accurate. Therefore, the molar mass calculation should not be affected.
Hi! I'm happy to help with your question.
a. The specific measurement that will be affected is the volume of gas collected in the graduated cylinder.
b. This mistake will likely result in a decrease in the calculated molar mass. Since the volume of gas collected is lower than it should be, the molar mass calculation will be based on a smaller amount of gas, leading to a lower value than the actual molar mass.
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What if a small amount of air leaked back into the flask through the tightened screw clamp as the flask assembly was cooling? would your calculated value for the molar mass of air be too high, too low, or would there be no effect? explain
Answers
The measured volume of hydrogen gas will be too high.
The volume of hydrogen is measured by collecting the gas over water. The volume of the gas is measured as the volume of water displaced by the gas in an inverted container.
When air leaks into the graduated cylinder, more volume of water is displaced hence a higher volume of hydrogen gas is measured.The calculated molar volume of hydrogen will be too high as a result of this error
The gas being recorded during the experiment would not only include hydrogen gas, but the air that leaked into the eudiometer tube as well. This leads to the increase in the volume of hydrogen gas which will be too high.
Since the volume of hydrogen is too high, therefore the calculated molar volume of hydrogen would also be too high.
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Which model could represent a neutral atom of nitrogen
Answers
Answer:
The answer is c.1. The atomic number of nitrogen is 7.
The electron arrangement of nitrogen is 2.5. With that said, atom 1 resembles the neutral atom of nitrogen because the innermost shell of the atom contains 2 electrons while the outermost shell of the atom contains 5 electrons.
The model that could represent a neutral atom of nitrogen is the first one. Thus, the correct option is C.
What is a Nitrogen atom?A nitrogen atom may be defined as a chemical element with an atomic number of 7 and an atomic mass of 14. It contains seven protons in its nucleus.
Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table. Being neutral, the number of protons that it has in its nucleus must be equal to that of the surrounding electron. Hence, the number of electrons are seven.
These seven electrons are only visible in the first model. Thus, the correct option for this question is C.
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Which one of the following will form a basic solution in water? which one of the following will form a basic solution in water? libro kc2h3o2 kcn liclo2 all of the above will form basic solutions.
Answers
Of the options provided, only one compound will form a basic solution in water: KCN (potassium cyanide).
When KCN is dissolved in water, it will hydrolyze to form KOH (potassium hydroxide) and HCN (hydrogen cyanide). Since KOH is a strong base, it will completely dissociate in water and release hydroxide ions (OH-), leading to a basic solution.
On the other hand, LiClO₂ and LiC₂ H₃O₂ are both salts of weak acids (HClO₂ and HC₂H₃O₂, respectively) and will undergo hydrolysis in water to form acidic solutions.
Therefore, the correct answer is: KCN will form a basic solution in water.
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(a) Consider an atom with two orbitals, A and B having eigenenergies A atomic and B atomic. Now suppose we make a one-dimensional chain of such atoms and let us assume that these orbitals remain
Answers
When a one-dimensional chain of atoms with two orbitals, A and B, is created, the eigenenergies of these orbitals, A atomic and B atomic, will remain the same. However, the energy levels of the orbitals.
may shift slightly due to interactions with neighboring atoms in the chain. This can lead to the formation of molecular orbitals, which are a combination of atomic orbitals from neighboring atoms. The energy levels of these molecular orbitals will depend on the specific arrangement of atoms and their orbitals in the chain. Overall, the behavior of the orbitals in a chain of atoms will depend on a variety of factors, including the number of atoms in the chain, the strength of the interactions between neighboring atoms, and the energy levels of the individual orbitals. Energy levels refer to the different states of energy that an atom or molecule can have. In quantum mechanics, electrons in an atom occupy specific energy levels, and transitions between these levels give rise to spectral lines observed in atomic spectra.
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What is the empirical formula of a compound that has 40% carbon, 6.7% hydrogen,
and 53.3% oxygen?
Which compound?
Answers
Answer:
Formaldehyde(CH\(_{2}\)O) or methanal is your answer.
Phineas turned off the lights in his room to go to sleep. Which part of the eye picks up the shades of gray of his furniture that then helps him to maneuver through his room without lights? O cones O rods O cornea O iris
Answers
Answer:
Rods
Explanation:
Rods are photoreceptor cells in the eye that help us see in low light but play little to no role in color vision. Therefore, they would help Phineas to see shades of grey and large shapes in the dark,
Answer:
rods
Explanation:
if 2.2 pounds is equal to a Kilogram. Convert 102 Kg into pounds show
all steps involved in your calculation. Show all steps involved in this calculation
Answers
Answer:
224.4pounds
Explanation:
Given;
2.2pounds = 1 kg
Convert;
102 kg into pounds
Solution:
From the conversion factor, we see that a kg is more than pound when compared. This will give us an idea of our answer;
1kg = 2.2 pounds
the amount of pounds of the unknown = y
if
1kg = 2.2 pounds
102 kg = y pounds
Cross multiply;
y = 102 x 2.2 = 224.4pounds
WILL GIVE BRANLIEST!! EASY BUT I WAS TO LAZY TO LEARN!! WILL FOREVER BE GREATFUL!!!
2. Which type of solution below has a cloudy appearance? (Choose all that apply)
A) Alloys
B) Solutions
C) Colloids
D) Suspensions
4. What is the difference between a primitive and body centered unit cell?
Answers
Answer:
b and In a primitive unit cell, particles or points are present only at the corners while in a centred unit cell, the particles or points are also present at other positions in addition to the corner
Explanation:
If 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, what is the concentration of the solution?
Answers
If 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, the concentration of the solution is 0.308M
How to calculate concentration?The concentration of a solution can be calculated using the following formula:
Molarity = no of moles ÷ volume (L)
However, the number of moles in 162.35g of Al(OH)3 must be calculated as follows:
Molar mass of Al(OH)3 = 78g/mol
no of moles = 162.35g ÷ 78mol
no of moles = 2.08mol
Molarity = 2.08mol ÷ 6.75L
Molarity = 0.308M
Therefore, if 162.35 g aluminum hydroxide are dissolved in 6750 mL of solution, the concentration of the solution is 0.308M.
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The rate of decay of a radioactive substances is calculated by
Answers
A contractor crew can frame 3 house in a week. How long will it take them to frame 54 houses if they frame the same number each week?
Answers
a container with 3.00 moles of gas has a volume of 60.0 l. with a temperature at 400.k, what is the pressure in atm? your answer should have three significant figures (round your answer to two decimal places). use r
Answers
The pressure of the gas inside the container is 1.6 atm. .This is calculated by the ideal gas law.
Ideal gas law states that the pressure of ideal gas is directly proportional to the absolute temperature of the gas. The ideal gas law also called the general gas equation. This is the equation of state of a hypothetical ideal gas. It is a good approximation of the behavior of many gases under many conditions . The expression for ideal gas law is,
PV = nRT
where, P is the pressure of the gas
V is the volume of the gas
n is the number of moles of the gas
T is the temperature of the gas
A container with 3.00 moles of gas has a volume of 60.0L with a temperature at 400 K. To find the pressure of the gas we have to apply all these value in ideal gas law.
n = 3.0 moles
V = 60.0 L
T = 400 K
From PV = nRT,
P = n RT / V
= (3.0 mole) (0.0821 L-atm. /K-mole)(400 K) / 60.0L
= 1.642 atm.
= 1.6 atm.
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Under what conditions would pressure affect the reaction rate?
A. If the reaction requires the use of a catalyst
B. If the reaction takes place between a solid and a liquid
O c. If the reaction is between two liquids
D. If the reaction occurs in the gas phase
Answers
Answer: D. If the reaction occurs in the gas phase
Explanation:
Answer:
D is correct via A P e x
Explanation:
Write the structure of the major organic product formed in the reaction of 1−methylcyclohexene with hydrogen chloride.
Answers
When 1-methylcyclohexene interacts with HCl, the methyl-substituted carbon atom receives an addition of bromide ion to create 1-chloro-1-methylcyclohexane.
Example of a chemical reaction.One or more chemicals transform into one or more other compounds in a chemical reaction. When vinegar and baking soda are combined, sodium acetate, carbon dioxide, and water are the results.
Alkenes are hydrocarbons containing a single double bond, and the suffix "ene" is used to name them. Alkenes respond better in an addition reaction, including 1-methylcyclohexene. The double bond will be shattered, and the replacements will be offered to them.
The carbons of the broken bond will receive H and Cl during the reaction with HCl. When H is inserted at the least replaced carbon, the main product is created. Therefore, the item will be 1-chloro-1-methylcyclohexane.
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i need help with it please
Answers
Answer:
1. cells
2. energy
3. pre-existing cells by division
Explanation:
Answer:
1. All living things have 1 or more cell
2. All organisms use a source of energy
3. All cells come form other pre-exsisting cells
Explanation:
How many grams of lead (ii) dihydrogen phosphate are produced when 76 g of boron dihydrogen phosphate combines with an excess amount of lead (ii) permanganate? use the following balanced equation: 2 b(h2po4)3 3 pb(mno4)2 ---> 2 b(mno4)3 3 pb(h2po4)2
Answers
To determine the grams of lead (II) dihydrogen phosphate produced, we need to calculate the molar mass of lead (II) dihydrogen phosphate (Pb(H2PO4)2) and use stoichiometry.
The molar mass of Pb(H2PO4)2 can be calculated as follows:
Pb: 207.2 g/mol
H: 1.01 g/mol (2 hydrogen atoms)
P: 31.0 g/mol
O: 16.0 g/mol (8 oxygen atoms)
Molar mass of Pb(H2PO4)2:
= (207.2 g/mol) + (2 * 1.01 g/mol) + 31.0 g/mol + (8 * 16.0 g/mol)
= 459.22 g/mol
Now, we can use stoichiometry to calculate the grams of Pb(H2PO4)2 produced.
From the balanced equation, we can see that 2 moles of B(H2PO4)3 react to produce 3 moles of Pb(H2PO4)2. Therefore, the molar ratio is 2:3.
Given that 76 g of B(H2PO4)3 is reacted, we can calculate the moles of B(H2PO4)3:
Moles of B(H2PO4)3 = mass / molar mass
= 76 g / (2 * 79.89 g/mol)
= 0.475 mol
Using the molar ratio, we can determine the moles of Pb(H2PO4)2 produced:
Moles of Pb(H2PO4)2 = (3/2) * moles of B(H2PO4)3
= (3/2) * 0.475 mol
= 0.713 mol
Finally, we can calculate the mass of Pb(H2PO4)2 produced:
Mass of Pb(H2PO4)2 = moles * molar mass
= 0.713 mol * 459.22 g/mol
= 327.01 g
Therefore, 327.01 grams of lead (II) dihydrogen phosphate are produced.
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a sealed flask initially contains pure nitrogen dioxide gas (no2). over time, the nitrogen dioxide forms dinitrogen tetroxide gas (n2o4). the graph below shows the relative amounts of (no2) and (n2o4) over time. what is true about the time indicated by the blue arrow? a. no2 molecules are no longer reacting to form n2o4 molecules. b. the reactant has been used up so the reaction can no longer proceed. c. the rate of the forward reaction (n2o4 formation) is equal to the rate of the reverse reaction (no2 formation). d. the activation energy required for the reaction to occur has been used up.
Answers
Based on the given information, the true statement about the time indicated by the blue arrow is: (c) The rate of the forward reaction (N₂O₄ formation) is equal to the rate of the reverse reaction (NO₂ formation).
The graph shows the relative amounts of NO₂ and N₂O₄ over time, and the point indicated by the blue arrow represents a state of equilibrium. In an equilibrium state, the forward and reverse reactions occur at equal rates.
The concentrations of NO₂ and N₂O₄ reach a constant value, indicating that the conversion of NO₂ to N₂O₄ and the conversion of N₂O₄ to NO₂ are occurring at the same rate.
Option a suggests that NO₂ molecules are no longer reacting, which is incorrect as the reaction is still ongoing at equilibrium. Option b suggests that the reactant has been completely used up, which is not the case in an equilibrium state. Option d refers to the activation energy, which is unrelated to the equilibrium state. Therefore, option c is the correct choice.
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