Using an experimentally determined value (1. 8×10−10) of Ksp, determine the value for the reaction quotient 'Q' if Ag2CrO4 will precipitate when 5. 00 mL of 0. 0040 M AgNO3 are added to 4. 00 mL of 0. 0024 M K2CrO4
Answers
The solubility product constant (Ksp) for Ag2CrO4 is given by the following equation:
Ag2CrO4(s) ⇌ 2Ag+(aq) + CrO4^(2-)(aq)
The expression for Ksp is:
Ksp = [Ag+]^2[CrO4^(2-)]
where [Ag+] and [CrO4^(2-)] are the concentrations of the silver ion and chromate ion in the equilibrium mixture, respectively.
To determine the value of Q, the reaction quotient, we need to determine the concentrations of Ag+ and CrO4^(2-) in the mixture of 5.00 mL of 0.0040 M AgNO3 and 4.00 mL of 0.0024 M K2CrO4. To do this, we need to make some assumptions:
1. The volumes of the two solutions are additive, so the total volume is 9.00 mL.
2. The AgNO3 and K2CrO4 solutions react completely to form Ag2CrO4.
First, we need to determine the moles of Ag+ and CrO4^(2-) in each solution:
For the AgNO3 solution:
moles of Ag+ = (0.0040 M) x (0.00500 L) = 2.0 x 10^-5 mol
For the K2CrO4 solution:
moles of CrO4^(2-) = (0.0024 M) x (0.00400 L) = 9.6 x 10^-6 mol
Since the AgNO3 and K2CrO4 react in a 1:1 ratio to form Ag2CrO4, the limiting reactant is K2CrO4. Therefore, all of the CrO4^(2-) is used up in the reaction, and the concentration of CrO4^(2-) in the equilibrium mixture is zero.
The concentration of Ag+ in the equilibrium mixture is:
[Ag+] = moles of Ag+ / total volume of mixture
[Ag+] = (2.0 x 10^-5 mol) / (9.00 x 10^-6 L)
[Ag+] = 2.22 M
Now, we can calculate the value of Q:
Q = [Ag+]^2[CrO4^(2-)] = (2.22 M)^2(0 M) = 0
Since Q is equal to zero and Ksp is greater than zero (1.8 x 10^-10), the reaction is not at equilibrium and Ag2CrO4 will precipitate from the solution.
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Related Questions
How many liters of water are needed to prepare a 1.67M solution of Ba(OH)2 if you need to dissolve 235g of it?
Answers
Answer: 2.04
Explanation:
Answer:
Approximately \(0.821\; \rm mol\).
Explanation:
Look up the relative atomic mass of \(\rm Ba\), \(\rm O\), and \(\rm H\) on a modern periodic table:
\(\rm Ba\): \(137.327\).\(\rm O\): \(15.999\).\(\rm H\): \(1.008\).Calculate the formula mass of \({\rm Ba(OH)_2}\):
\(\begin{aligned}& M({\rm Ba(OH)_2}) \\ &= 137.327 + 2\times(15.999 + 1.008) \\ &\approx 171.334\; \rm g \cdot mol^{-1}\end{aligned}\).
Calculate the number of moles of \({\rm Ba(OH)_2}\) formula units in that \(235\; \rm g\) of this compound:
\(\begin{aligned}& n({\rm Ba(OH)_2}) \\ &= \frac{m({\rm Ba(OH)_2})}{M({\rm Ba(OH)_2})} \\ &= \frac{235\; \rm g}{171.334\; \rm g \cdot mol^{-1}} \approx 1.37159\; \rm mol \end{aligned}\).
Calculate the volume of a \(c({\rm Ba(OH)_2}) = 1.67\; \rm mol \cdot L^{-1}\) with approximately \(n({\rm Ba(OH)_2}) = 1.37159\; \rm mol\) of the solute:
\(\begin{aligned}& V({\rm Ba(OH)_2}) \\ &= \frac{n({\rm Ba(OH)_2})}{c({\rm Ba(OH)_2})} \\ &= \frac{1.37159\; \rm mol}{1.67\; \rm mol \cdot L^{-1}} \approx 0.821\; \rm L \end{aligned}\).
What type of bonding does a material most likely
have if it has a low melting point, does not dissolve
in water and has a dull appearance?
Answers
Answer: Covalent type of bonding does a material most likely have if it has a low melting point, does not dissolve in water and has a dull appearance.
Explanation:
A covalent bond is a bond formed by sharing of electrons between the combing atoms. The bond through with these atoms are combined is called covalent bonding.
Some characteristics of non-metals are as follows.
Covalent compounds have low melting point.
Being non-polar in nature covalent compounds do not dissolve in water.
They are brittle in nature.
Thus, covalent type of bonding does a material most likely have if it has a low melting point, does not dissolve in water and has a dull appearance.
One of your classmates was inspired to find ways to provide supplemental oxygen by concentrating O2 in the air. After reading about the cathode ray tube, they proposed to build a device to direct molecules of O2, each of which are typically composed of 16 protons, 16 neutrons, and 16 electrons. The device would use a fan to blow air through a set of electrically charged plates, deflecting the oxygen, while the rest of the air (mostly nitrogen and carbon dioxide molecules) would continue to travel straight ahead. In one or two complete sentences, explain to your classmate why this device is unlikely to work as designed
Answers
The device is not designed in a way that will allow it to concentrate O2 molecules exclusively, and thus it will not be effective in providing supplemental oxygen.
The device that your classmate has proposed for concentrating O2 in the air is unlikely to work as designed. This is because the fan to be used in the device cannot differentiate between different types of gas molecules, and as a result, the device will not only concentrate O2, but also nitrogen and carbon dioxide molecules which make up the rest of the air. Additionally, the device will also not be able to effectively separate oxygen molecules from each other, as the size of an O2 molecule is similar to that of a nitrogen molecule. In conclusion, the device is not designed in a way that will allow it to concentrate O2 molecules exclusively, and thus it will not be effective in providing supplemental oxygen.
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The volume of container 2 i 27. 32 L. How many mole of the ga are in container 2?
Answers
The number of moles in container 2 is 33.3moles when the container has 27.32L of gas inside it
The number of moles of gas in container 2 can be calculated using the Ideal Gas Law:
n = PV/RT
where n is the number of moles of the gas with known volume,
P is the pressure (assumed to be 1 atm for ideal gases),
V is the volume (27.32 liters),
R is the ideal gas constant (0.0821 L·atm/mol·K) and
T is the temperature (assumed to be 273.15 K).
Plugging in the values, we get:
n = (1 atm)(27.32 L)/(0.0821 L·atm/mol·K)(273.15 K)
n = 33.3 mol
Therefore, there are 33.3 moles of gas in container 2.
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Sig fig 35 mm + 21.321 mm + 2.00005 mm =
Answers
Answer:
Significant Figures in 200.0
Result 200.0
Sig Figs 4 (200.0)
Decimals 1 (200.0)
Scientific Notation 2.000 × 102
E-Notation 2.000e+2
your inclunation to use the same soutions to solve similar problems is known as, while using the same solution for two diffrent problems that hold the same structure is known as
Answers
your inclunation to use the same soutions to solve similar problems is known as Mental set , while using the same solution for two diffrent problems that hold the same structure is known as analogical transfer.
The brain's propensity to stick to the most familiar solution to an issue and stubbornly ignore alternative solutions has been referred to as mental set. This tendency would be most likely influenced by previous knowledge (the lengthy mental set) or it is a momentary side effect of sequence learning (the short-term mental set). Analogy is the combination of different concepts' similarities. The familiar concepts were referred to as the comparator, while the unfamiliar notions were referred to as the target . Analogy is the comparison between two concepts' similarities. The familiar concept is known as the analogue, and the unfamiliar concept is known as the target. The transmission of a basic structure procured via one or more cases to another instance is known as analogical transfer. A basic structure like this is referred to as a paradigm.
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An aqueous solution that has a hydrogen ion concentration of 1.0 x 10^-8 mole per liter has a pH of
1) 6, which is basic
2) 6, which is acidic
3) 8, which is basic
4) 8, which is acidic
Answers
Answer: 8, which is basic
Explanation: The hydrogen ion concentration is 1.0 x 10^-8 mole per liter. Using [H+] = 1.0 x 10 -(pH) the pH is 8. A pH above 7 is basic.
An aqueous solution that has a hydrogen ion concentration of 1.0 x 10-⁸ mole per liter has a pH of 8, which is basic.
What is pH?pH of a solution refers to the degree of acidity or alkalinity of the solution.
The pH of a solution can be calculated using the following formula:
pH = - log [H+]
According to this question, an aqueous solution that has a hydrogen ion concentration of 1.0 x 10-⁸ mole per liter.
pH = - log [1 × 10-⁸]
pH = 8
Therefore, an aqueous solution that has a hydrogen ion concentration of 1.0 x 10-⁸ mole per liter has a pH of 8, which is basic.
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Which of the following is the best definition of ethics?
A. The maintenance of a stable internal environment
B. Response to external stimuli
C. A set of guidelines for fair conduct during an experiment
D. A multistep process whose last step controls what happens in an
earlier step
Answers
Answer:
C
Explanation:
I believe the answer is C.
WILL GIVE BRAINLIEST!Which statement best describes electrolytic and voltaic cells?
•Electrolytic cells and voltaic cells each carry out spontaneous reactions.
•Electrolytic cells and voltaic cells each carry out nonspontaneous reactions.
•Electrolytic cells carry out spontaneous reactions, but voltaic cells carry out nonspontaneous reactions.
•Electrolytic cells carry out nonspontaneous reactions, but voltaic cells carry out spontaneous reactions
Answers
Answer:
the last answer is right.
a push or a pull between an object (many types)
Your answer
Answers
Answer:
your answer would be force
Explanation:
A thick, oily liquid found deep in the earth that is refined and used as a source for gasoline is called _____________?
Petroleum
Reserve
Lumber
Coal
Answers
It would be A, Petroleum.
Hope this helped!
-William
please help with this i will give brainlyest thank you!
Answers
Answer:
2D 3D
Explanation:
can I get the options for number 4 and I’m not totally sure for number one but I would say shorter,longer
In a steady flow combustion chamber , liquid enthyl alcohol ( C2H5OH(l)) at 25 degrees celsius (density : 790 kg/m^3; Specific heat at constant pressure: 114.08 kJ/kmol*K and enthalphy of vaporization: 42,340 kJ/kmol) is burned with 40 percent excess air that also enters at the same temperature as the fuel. combustion products leave thr chamber at 600K. Assuming a complete combustion. Determine the following:
A. The required volume flow rate of the liquid ethyl alcohol to supply at a rate of 2000kJ/s (answer should be in units of L/min)
Answers
The required volume flow rate of liquid ethyl alcohol to supply at a rate of 2000 kJ/s is approximately 164.9 L/min.
To determine the required volume flow rate of liquid ethyl alcohol, we need to calculate the fuel flow rate first. Then, we can convert it to volume flow rate.
Given:
Rate of energy release (Q) = 2000 kJ/s
Excess air = 40% (or 0.4)
First, let's calculate the fuel flow rate (m f):
Q = m f × Lower Heating Value (LHV)
The Lower Heating Value (LHV) for ethyl alcohol can be calculated using the enthalpy of vaporization:
LHV = enthalpy of vaporization / molecular weight of fuel
LHV = 42,340 kJ/k mol / 46.07 kg/k mol = 920.11 kJ/kg
Now, we can calculate the fuel flow rate:
m f = Q / LHV
m f = 2000 kJ/s / 920.11 kJ/kg ≈ 2.173 kg/s
Next, let's convert the fuel flow rate to volume flow rate:
Volume flow rate (V f) = m f / density
V f = 2.173 kg/s / 790 kg/m³ = 0.002749 m³/s
Finally, we can convert the volume flow rate to L/min:
V f = 0.002749 m³/s × (1000 L/1 m³) × (60 s/1 min) ≈ 164.9 L/min
Therefore, the required volume flow rate of liquid ethyl alcohol to supply at a rate of 2000 kJ/s is approximately 164.9 L/min.
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Give the relation of energy (E) and frequency (v) as given by Planck. Calculate the frequency and energy of a photon of radiation having wavelength 3000°A.
Pls answer correctly,need it urgently...
Answers
Solution:-1
\(\\ \sf\longmapsto E=hv\)
E denotes to Energy h denotes to planks constantv denotes to frequency.Solution:-2
Wavelength=3000Å\(\boxed{\sf \lambda=\dfrac{c}{v}}\)
\(\\ \sf\longmapsto v=\dfrac{c}{\lambda}\)
\(\\ \sf\longmapsto v=\dfrac{3\times 10^8m/s}{3000\times 10^{-10}m}\)
\(\\ \sf\longmapsto v=0.001\times 10^{18}s^{-1}\)
\(\\ \sf\longmapsto v=1.0\times 10^{15}s^{-1}\)
Now
\(\\ \sf\longmapsto E=hv\)
\(\\ \sf\longmapsto E=6.626\times 10^{-34}Js\times 1.0\times 10^{15}s^{-1}\)
\(\\ \sf\longmapsto E=6.6\times 10^{-19}J\)
The letter designations for the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are?.
Answers
The letter designations for the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are : s:2, p:6, d:10, and f:14.
According to their energies, electrons are arranged into groups called shells (labeled by the principle quantum number, n). A shell's average distance from the nucleus increases with its energy in general. Subshells are smaller groups of electrons within a shell. One subshell is present in the first shell, two subshells are present in the second shell, three subshells are present in the third shell, and so on.
The letters s, p, d, and f are used to identify each shell's subshells in alphabetical sequence. Thus, the first shell only contains one s subshell (designated 1s), the second shell has two subshells (named 2s and 2p), the third shell has three subshells (called 3s, 3p, and 3d), and so on. The maximum number of electrons that can be held by a subshell varies. Any s subshell can hold up to 2 electrons; p, 6; d, 10; and f, 14.
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Volcanoes and earthquakes are similar because they can occur from which of the following events?
a-Plate boundary movements
b-Removal of vegetation
c-Precipitation
d-Wildfires
Answers
Answer:
A. Plate Boundary movements
Explanation:
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and follow also.........
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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How many match sticks will there be in the 4th picture?
Answers
What is an ecosystem. A.It is a single plant and a single animal that live in given area B. it is a community of plants, animals and their physical surrounding. C it is the members of the same species in an area. D it is one species that lives in a given area GIVE BRANLIYST
Answers
Answer:
B. it is a community of plants,animals and there physical surrounding.
Which chemical family below would the element iodine most likely belong to?
Family D
Family C
Family A
Family B
Answers
Answer:
it is option A
Explanation:
Best of luck in whatever you are doing
Built from amino acids
carry out most of the life-sustaining functions of the human body
Answers
Answer:
proteins carry out most of the life sustaining functions of the human body
What is the pressure in a 29.0-L cylinder filled with 45.5 g of oxygen gas at a temperature of 325 K ?
Answers
Answer:
P = 1.29 atm
Explanation:
Given data:
Volume of cylinder= 29.0 L
Mass of oxygen gas = 45.5 g
Temperature = 325 K
Pressure of gas = ?
Solution:
First of all we will calculate the number of moles of oxygen:
Number of moles = mass/molar mass
Number of moles = 45.5 g/ 32 g/mol
Number of moles = 1.4 mol
Pressure of oxygen:
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
P ×29.0 L = 1.4 mol × 0.0821 atm.L/ mol.K × 325 K
P = 37.36 atm. L / 29.0 L
P = 1.29 atm
Can anyone please help me!! What is d. Beat the eggs?? A physical or a chemical change?
I searched on google and some sites say it is physical while others say it’s chemical so if you can please confirm with the explanation; that would be great because I am really confused about this one.
Answers
Answer:
physical change
Explanation:
im not 100% but thats what i would pick because all you are doing is changing the state they are in. the eggs arnt chemically changing at all. i think ur overthinking it
what's an extensive property of matter
Answers
Answer:
Mass, Volume, Length, Moles, Energy, Number of Particles
Explanation:
"Asbestos needs to be removed, whether or not it will be
disturbed.
True or False"
Answers
False, Asbestos is a naturally occurring mineral fiber that was commonly used in various industries due to its heat resistance, strength, and insulating properties.
Asbestos does not necessarily need to be removed if it will not be disturbed or pose a risk to human health. Asbestos-containing materials that are in good condition and undisturbed are generally considered safe. However, if asbestos-containing materials are damaged, deteriorating, or will be disturbed during renovation or demolition activities, it is necessary to take appropriate precautions, which may include professional removal or encapsulation, to prevent the release of asbestos fibers into the air. The decision to remove asbestos should be based on an assessment of its condition, potential for disturbance, and adherence to local regulations and guidelines.
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PLEASE HELP!!! I NEED SOON!! CHOOSING BRAINLIEST!! Name two responsible uses of machines and two irre- sponsible uses.
Answers
Two responsible uses of machines are in Agriculture to improve efficiency, productivity, and profitability and in the medical field to diagnose and treat patients. Two irresponsible uses of machines are: Some produce a significant amount of pollution and harmful emissions, and machines are designed for warfare and destruction.
What is an MRI machine used for?An MRI (Magnetic Resonance Imaging) machine is a medical diagnostic tool that uses a powerful magnetic field, radio waves, and a computer to produce detailed images of internal organs, tissues, and bones in the body. It is a non-invasive and painless procedure that can provide valuable information about various conditions and diseases.
How do machines make Agriculture practices easy for farmers?Machines have made agriculture practices easier and more efficient for farmers by increasing productivity, precision, and quality while reducing labor costs and physical strain.
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1. What part of the human body has the same role as the processor on a computer?
2. What part of the human body has the same job as the wires and circuits in a computer?
Answers
Answer:
Starting from head to toe: A human brain is like a computer's central processing unit (CPU). In order for both the human body and computer to perform tasks, they need a brain or CPU. The brain and CPU communicate with other parts of the computer.Jan 27, 2011
Explanation:
I need the answers of these
Answers
Answer:
Hope this helps :D
Explanation:
Metal: Aluminum and Copper
Non-Metal: Hydrogen and Flourine
Acid: Sulfuric Acid and Phosphoric Acid
Alkali Metals: Hydrogen and Lithium
Compounds: Water and Carbon Dioxide
Elements: Carbon and Oxygen
Propane can be cracked to produce propane and hydrogen. Complete the symbol equation for the reaction.
Answers
Answer:
Explanation:
C3H8= C3H6 +H2
what is the final acetate ion concentration when 55. g fe(c2h3o2)3 is dissolved in enough water to make 232. ml of solution? the molar mass of fe(c2h3o2)3 is 232.977 g/mol.
Answers
Fe(C2H3O2)3 is a complex iron acetate. When it is dissolved in water, it will ionize and form acetate ions (C2H3O2-) and iron ions (Fe3+). The final acetate ion concentration is 3.053 M when 55g Fe(C2H3O2)3 is dissolved in enough water to make 232 ml of solution.
The first step is to find the number of moles of Fe(C2H3O2)3 present in the solution. We can use the formula:
moles = mass / molar mass
where mass is 55. g and molar mass is 232.977 g/mol
moles = 55 / 232.977 = 0.237 moles
Since Fe(C2H3O2)3 is a complex it will dissociate into 3 acetate ions, and one iron ions, so the acetate ion concentration will be 3* 0.237 moles = 0.711 moles.
To find the final acetate ion concentration in moles per liter, we need to divide the number of moles by the volume of the solution in liters.
The volume of the solution is in milliliters, so we need to convert it to liters. To convert milliliters to liters, we divide by 1000.
232 ml / 1000 = 0.232 L
Therefore,
Final acetate ion concentration = 0.711 moles / 0.232 L = 3.053 M
So, the final acetate ion concentration is 3.053 M when 55. g Fe(C2H3O2)3 is dissolved in enough water to make 232 ml of solution.
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