The molarity of aqueous silver nitrate is 0.050 M.
In order to find the molarity of AgNO₃, we first need to use stoichiometry to find the number of moles of K₂CrO₄ used in the reaction. We can use the equation:
2 AgNO₃(aq) + K₂CrO₄(aq) → Ag₂CrO₄(s) + 2 KNO₃(aq)
From the equation, we can see that the stoichiometric ratio of AgNO₃ to K₂CrO₄ is 2:1. Therefore, the number of moles of K₂CrO₄ used in the reaction can be calculated as follows:
25.0 mL × 0.100 mol/L = 0.00250 mol K₂CrO₄
Since the stoichiometric ratio of AgNO₃ to K₂CrO₄ is 2:1, the number of moles of AgNO₃ used in the reaction is twice that of K₂CrO₄, or:
0.00250 mol K₂CrO₄ × 2 mol AgNO₃/1 mol K₂CrO₄ = 0.00500 mol AgNO₃
Finally, we can calculate the molarity of AgNO₃ using the formula:
Molarity = moles of solute ÷ volume of solution in liters
Molarity = 0.00500 mol ÷ 0.050 L = 0.050 M
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What element is represented by the following orbital diagram?
Answer:
the answer is magnesium
Explanation:
If a bacterium adapted to a cold environment were moved to a much warmerenvironment, what changes to the membrane lipids should the bacterium make?A. Because increased temperature decreases fluidity, the bacterium shouldincrease the length of fatty acid tails on membrane lipidsB. Because increased temperature increases fluidity, the bacterium shoulddecrease the length of fatty acid tails on membrane lipidsC.Because increased temperature decreases fluidity, the bacterium shoulddecrease the length of fatty acid tails on membrane lipidsO Because increased temperature increases fluidity, the bacterium shouldincrease the length of fatty acid tails on membrane lipids
Option B is the correct answer. If a bacterium adapted to a cold environment were moved to a much warmer environment, the increased temperature would increase the fluidity of the membrane.
The fluidity of the bacterial membrane is critical for its function, and it depends on the composition of the membrane lipids. At low temperatures, the membrane lipids of the bacterium from a cold environment have more unsaturated fatty acids, which increase the fluidity of the membrane to maintain its function. In contrast, at high temperatures, the membrane lipids of the bacterium from a warm environment have more saturated fatty acids, which decrease the fluidity of the membrane.
If a bacterium adapted to a cold environment were moved to a much warmer environment, the increased temperature would increase the fluidity of the membrane. To maintain the integrity and function of the membrane, the bacterium must decrease the fluidity of the membrane. The bacterium can do this by decreasing the length of the fatty acid tails on the membrane lipids. Shorter fatty acid tails result in fewer interactions between the lipid molecules, which decreases the fluidity of the membrane. Therefore, option B is the correct answer.
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A scientist provides 454 kJ of energy to a covalent compound in order to start a reaction. As a result, heat is released. Which statement is true about this experiment?
The amount of energy produced is more than 454 kJ.
The amount of energy produced is equal to 454 kJ.
The amount of energy produced is less than 454 kJ.
The amount of energy produced is at least double that of 454 kJ.
Answer:
The amount of energy produced is less than 454 kJ.
Explanation:
I do not know but if am wrong you can correct me. I need your help for business, english and chemistry questions on my profile. So can you and the other person who commented and go on my profile please...? the due date already gone 12 days ago.
5
Use the equation Moles = Mass/Mołar Mass (Mr) to calculate the following: To make 3 moles of
Sodium (Na), how much mass do I need to weigh out?
A: 699g
B: 6.9g
C: 69g
D: 96g
Answer:
c
Explanation:
Molar mass of Na=23g/mol
amount of mole(n)=3
mass=?
therefore,n=m/M
3mol=m/23g/mol
m=23g/mol ×3mol
m=69g.
What number goes in the blank to balance this equation?
loc
Fe + Sg → 8 FeS
16
8
1
4
This reaction forms things. The following equation is therefore a combination or synthesis reaction. FeS, a dark substance made up of the chemical combination iron sulfide.
It is formed of sulfide ions and iron. Iron in FeS is at the +2 oxidation state.
Is the balance of 2 Fe o2 fe2o3 off?In this imbalanced reaction equation, the reactant side contains one iron atom and two oxygen atoms, whereas the product side contains two iron atoms and three oxygen atoms. The number of atoms of each element must be present in equal amounts on both sides of a reaction for it to be balanced.
What undergoes oxidation in FeS FeS?iron The positively charged iron cation and the negatively charged sulphide ion become attracted to one another, resulting in the formation of ferrous sulphide. As you can see from the processes listed above, Fe is going through an oxidation process in which it loses electrons.
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For many purposes we can treat propane C3H8 as an ideal gas at temperatures above its boiling point of −42.°C Suppose the temperature of a sample of propane gas is raised from -28.0°C to 9.0°C, and at the same time the pressure is increased by 5.0%
The percent change in volume is 21 %.
given that :
temperature , T1 = 273 -28 = 245 K
temperature , T2 = 273 + 9 = 282 K
pressure P1 = P
pressure P2 = P - O.O5 P = 0.95 P
Volume V1 = V
volume V2 = ?
using ideal gas equation , we get :
P1 V1 / T1 = P2 V2 / T2
V2 = (P1 V1 T2 ) / P2 T1
V2 = ( P × V × 282 ) / ( 0.95 P × 245 P )
V2 = 1.211 V
change in volume is given as = V2 - V1
= 1.211 V - V
= 0.211 V
Percent change in volume is = (0.21 V)) / V ) × 100 %
= 21 %
Thus, For many purposes we can treat propane C3H8 as an ideal gas at temperatures above its boiling point of −42.°C Suppose the temperature of a sample of propane gas is raised from -28.0°C to 9.0°C, and at the same time the pressure is increased by 5.0% . the percent change in volume in 21 %.
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calculate the gravitional force in between two object of mass 25kg and 20kg if distance between them is 5m?
Answer:
Explanation:The equation for this is F = -GmM/R^2 where the minus sign says the force is attractive m is 10 kg, M is 20 kg and R is 5 meters. If you crunch the numbers you get an answer of:
What is the pOH of water?
Answer:
A. 7
(assuming the water is neutral)
Imagine a basketball filled with liquid water.Would the basketball still hold the same number of molecules? Can you use
22.4 L/mol as the molar volume for liquid water
Answer:
Yes !
Explanation:
The ball will have more molecules.
a basketball filled with liquid water. yes we use 22.4 L/mol as the molar volume for liquid water.
what are the properties of water ?Water is the chemical substance having chemical formula H2O, one molecule of water consist of two hydrogen atoms which are covalently bonded to a single oxygen atom.
The physical property of Water are, it is a colorless and tasteless liquid, have extensive hydrogen bonds resulting in unusual properties in the condensed form.
This also have high melting and boiling points. As compared to other liquids, water has a higher specific heat, thermal conductivity, surface tension, dipole moment, etc.
Water is a great solvent and helps in the transportation of ions and molecules required for metabolism, has high latent heat of vaporization helps in the regulation of body temperature.
It is Amphoteric nature can act as both acid and base means that it is amphoteric in nature, it is Electropositive elements which reduce water to hydrogen molecule and it is the source of hydrogen.
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A common characteristic of killers who choose poison as their weapon. This way they can avoid having to confront their victim me directly.
Answer:
The killers who choose poison for killing the victim are the one who does not want to confront the victim. When a knife or a bullet is used to kill a person he may struggle and can cause harm to killer also.
Explanation:
Poison is the most easiest way to kill a person without any struggle. The poison can be given to a person in a juice or through an injection. The poison entered in the body of victim will cause his heart to cease gradually and he will not have energy to struggle with the killer to save his life.
Cassandra builds a galvanic cell using a zinc electrode immersed in an aqueous Zn(NO3)2 solution and an copper electrode immersed in an aqueous CuCl2 solution at 298 K. Which species is produced at the anode
In the galvanic cell that Cassandra builds with a zinc electrode in a Zn(NO3)2 solution and a copper electrode in a CuCl2 solution at 298 K, the species produced at the anode is Zn2+.
1. In a galvanic cell, the anode is where oxidation occurs.
2. The zinc electrode (Zn) will act as the anode, as it has a lower reduction potential compared to the copper electrode (Cu).
3. During the oxidation process at the anode, the zinc electrode loses electrons and becomes Zn2+ ions, which dissolve into the aqueous Zn(NO3)2 solution.
4. Therefore, the species produced at the anode in this galvanic cell is Zn2+.
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what should we do to reduce the risk when working with concentrated acids and bases
What should be done to reduce the risk when working with concentrated acids and bases are;
1) Ensure that the concentrated acids and bases are stored separately in safety cabinets.
2) If you don't have separate safety cabinets and the must be stored in same cabinet, then you must ensure that they are stored in separate compartments.
3) Lastly, the separate compartments or cabinets must have their separate spill containment compounds.
When working with strong acids and bases during neutralization reactions, usually the production of gases can make the solution which is corrosive to splash and get to people around there.
Due to how strong the acids and base are, these splashes from the neutralized solution could have potentially damaging effects on humans when it contacts them by either casing skin burns or even blindness.
Now, to reduce the risk of the adverse effects stated above, what could be done is;
1) Ensure that the concentrated acids and bases are stored separately in safety cabinets.
2) If you don't have separate safety cabinets and the must be stored in same cabinet, then you must ensure that they are stored in separate compartments.
3) Lastly, the separate compartments or cabinets must have their separate spill containment compounds.
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a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.6 nm. what is the final state of the hydrogen atom?
When a ground state hydrogen atom absorbs a photon of light having a wavelength of 92.6 nm, the final state of the hydrogen atom is the excited state.
The hydrogen atom has only one electron, which is located in the ground state or the first energy level. When a photon of light of 92.6 nm wavelength is absorbed, the electron gains energy and jumps to the higher energy level, which is the second energy level (n = 2).
Thus, the final state of the hydrogen atom is the excited state or the second energy level. The energy absorbed by the electron is equal to the energy of the photon. The energy of a photon is given by the formula: Energy of a photon = hc/λwhere,h = Planck's constant = 6.626 x 10⁻³⁴ J.s
c = speed of light = 3 x 10⁸ m/s λ = wavelength of the photon
Substituting the given values, we get
Energy of a photon = (6.626 x 10⁻³⁴ J.s x 3 x 10⁸ m/s) / (92.6 x 10⁻⁹ m)
Energy of a photon = 2.14 x 10⁻¹⁸ J. The energy absorbed by the electron is equal to the energy difference between the two energy levels.
The energy of an electron in the nth energy level of the hydrogen atom is given by the formula: E_n = (-2.18 x 10⁻¹⁸ J) / n² where, E_n = energy of electron in nth energy level
Substituting n = 1 (ground state), we get: E₁ = (-2.18 x 10⁻¹⁸ J) / (1)² E₁= -2.18 x 10⁻¹⁸ J
Substituting n = 2 (excited state), we get: E₂ = (-2.18 x 10⁻¹⁸ J) / (2)² E₂ = -0.545 x 10⁻¹⁸ J
The energy absorbed by the electron is the difference between the energy of the electron in the excited state and the energy of the electron in the ground state.
ΔE = E₂ - E₁
ΔE = (-0.545 x 10⁻¹⁸ J) - (-2.18 x 10⁻¹⁸ J)ΔE = 1.64 x 10⁻¹⁸ J
Since the electron gains energy, the energy absorbed by the electron is positive. Therefore, the final state of the hydrogen atom is the excited state.
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How many carbons atoms and hydrogen atoms in c3h5
(A) 2 carbon atoms and 5 hydrogen atoms
(B) 3 carbon atoms and no hydrogen atom
(C) 4 carbon atoms and no hydrogen atom
(D) 5 carbon atoms and 2 oxygen atoms
Answer:
A
Explanation:
It should be A since hydrogen atoms are present, but oxygen is not.
This molecule has ___ bonds and is a ___ molecule.
a. nonpolar, polar
b. polar, nonpolar
c. nonpolar, nonpolar
d. polar, polar
explain why
‼️I have balanced the EQ already, but I'm lost on part B. will be awarding all my points (100+) to someone who can help and provide steps :) ‼️
Mrs. Webb placed a cup containing 10.0 g of water into a beaker, then placed 2.0 g of calcium carbide, CaC₂ into the H₂O. The reaction produced flammable ethyne (C₂H₂) gas an calcium hydroxide.
a. Write the balanced equation for the reaction. CaC₂+ H₂O → C₂ H₂ + Ca(OH)₂
b. How many L of ethyne (at STP) can form?
Explanation:
To determine how many liters of ethyne (C₂H₂) can form at STP, we need to use stoichiometry and the ideal gas law.
First, let's determine the number of moles of CaC₂ and H₂O that reacted. From the given information, we know that the mass of water is 10.0 g and the mass of CaC₂ is 2.0 g. We can use the molar masses of CaC₂ (64.10 g/mol) and H₂O (18.02 g/mol) to convert the masses to moles:
moles of CaC₂ = 2.0 g / 64.10 g/mol = 0.0312 mol
moles of H₂O = 10.0 g / 18.02 g/mol = 0.555 mol
Next, we need to determine the limiting reactant to find out how many moles of ethyne can form. To do this, we compare the mole ratio of CaC₂ to H₂O in the balanced equation:
CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂
1 2
For every 1 mole of CaC₂, we need 2 moles of H₂O to react. The moles of H₂O we have (0.555 mol) are more than enough to react with the moles of CaC₂ we have (0.0312 mol). Therefore, CaC₂ is the limiting reactant.
Now we can use the mole ratio of CaC₂ to C₂H₂ in the balanced equation to find the moles of C₂H₂ that can form:
CaC₂ + 2H₂O → C₂H₂ + Ca(OH)₂
1 1
1 mole of CaC₂ produces 1 mole of C₂H₂. Therefore, the moles of C₂H₂ that can form is also 0.0312 mol.
Finally, we can use the ideal gas law to find the volume of C₂H₂ at STP. The ideal gas law is PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. At STP, the pressure is 1 atm and the temperature is 273 K.
Plugging in the values, we get:
V = (nRT) / P
V = (0.0312 mol)(0.0821 L·atm/mol·K)(273 K) / 1 atm
V = 0.738 L
Therefore, the volume of C₂H₂ that can form at STP is 0.738 L.
What is formed when a piece of sodium is added to water
Answer:
Explanation:
2Na + 2HOH ====> 2NaOH + H2
This reaction is very reactive. It does not take much to get it going.
Na is sodium
HOH is another way to write water.
NaOH is Sodium Hydroxide.
H2 is hydrogen gas.
The hydrogen gas can ignite if there is an open flame around. Don't do this experiment with a Bunsen Burner nearby.
what volume of methane gas, ch4, reacts to give 5.00 ml of carbon dioxide gas? (assume temperature and pressure remain constant.) ch4(g) o2(g) spark co2(g) h2o(g)
Carbon dioxide is produced when 5 mL of methane gas interacts.
Methane, a hydrocarbon, is the primary component of natural gas. Methane has an effect on the climate and temperature of the earth because it is a greenhouse gas (GHG). Methane is released into the atmosphere through a variety of natural and anthropogenic (caused by humans) sources.
Methane is non-toxic and safe to breathe in small amounts, but if it is allowed to replace air in large quantities, the absence of oxygen could result in suffocation.
\(CH_{4}(g) + 2O_{2} \rightarrow CO_{2} + 2H_{2}O(g)\)
1 volume of \(CH_{4}\) = 1 volume of \(CO_{2}\)
5 ml of \(CH_{4}\) = 1 × 5 mL CO2
= 5 mL CO2
So, volume of methane = 5mL
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Excessive breakdown of _____ may lead to an increase in ketone body formation.
a. carbohydrates.
b. amino acids.
c. fatty acids.
d. nucleic acids
Excessive breakdown of fatty acid may lead to an increase in ketone body formation. The correct option is c.
The Ketone bodies will be produced in the liver cells by the breakdown of the fatty acids. These are released in to the blood after the glycogen stores in the liver have depleted. The Glycogen will stores that will be typically are depleted with the first 24 hours of the fasting.
Ketones are present in the blood and when the glucose level will be lower in the blood. Liver shifts the metabolization process from the carbohydrates to the fatty acids where there is the lack of the glucose. The correct option is c.
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Deep Sea: What is the deepest zone in which the moon has had more visitors?
Hadal-pelagic Zone
Abysso-pelagic Zone
Bathypelagic Zone
Mesopelagic Zone
The deepest zone of the deep sea is the Hadal-pelagic Zone.
The topography of the deep sea floor:The deep sea floor or bottom is also called the seabed.
There are various characteristics of the deep sea floor that distinguished it into various zones.These include:
mountains, plains, channels, canyons, exposed rocks, and sediment-covered areas.The various zones found in an deep sea floor from the top most to the deepest include:
Mesopelagic ZoneBathypelagic ZoneAbysso-pelagic ZoneHadal-pelagic ZoneThe deepest is Hadal-pelagic Zone which is made up of trenches formed by the movements of the earth's tectonic plates.
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The most appropriate way to measure a volume of soda
Answer:
measure in cups or fluid ounces
Explanation:
Answer:
Liters
Explanation:
Trust me
21(3d − 4) + 100 = 58 State the solution. (If all real numbers
are solutions, enter REALS. If there is no solution, enter NO
SOLUTION.)
The solution to the equation and value of variable 21(3d - 4) + 100 = 58 is d = 2/3.
Solve the equation 21(3d - 4) + 100 = 58, we can begin by simplifying and isolating the variable:
21(3d - 4) + 100 = 58
Distribute 21 to the terms inside the parentheses:
63d - 84 + 100 = 58
Combine like terms:
63d + 16 = 58
Subtract 16 from both sides:
63d = 42
Divide both sides by 63:
d = 42/63
Simplifying the fraction gives:
d = 2/3
The solution to the equation is d = 2/3.
The solution to the equation 21(3d - 4) + 100 = 58 is d = 2/3. By simplifying the equation, we find that dividing both sides by 63 results in the solution of d = 2/3, which satisfies the original equation.
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587. mL of 0.00531 M NaI (aq) is combined with 840. mL of 0.00536 M Pb(NO3)2 (aq). Determine if a precipitate will form given that the Ksp of Pbl2 is 1.40x10-8.
a. Precipitation will not occur because Qsp > Ksp
b. Precipitation will occur because Qsp > Ksp
c. Precipitation will occur because Qsp = Ksp
d. Precipitation will not occur because Qsp < Ksp
e. Precipitation will occur because Qsp < Ksp
The formation of a precipitate is possible when the product of the ionic concentrations exceeds the Ksp value. Qis is the reaction quotient, which is the ionic product (IP) in a solution.
To determine whether a precipitate will occur, the reaction quotient (Qis) must be compared to the solubility product constant (Kip). The correct option is (d) Precipitation will not occur because Qis < Kip. The calculations are provided solution below; Qis = [Pb2+] [I–]2Moles of NaI = 0.587 L × 0.00531 mol/L = 0.00313 mol Moles of Pb(NO3)2 = 0.840 L × 0.00536 mol/L = 0.00451 mol[Pb2+] = 0.00451 mol / (0.587 L + 0.840 L) = 0.00327 M[I–] = 0.00313 mol / (0.587 L + 0.840 L) = 0.00226 MQsp = (0.00327 M) × (0.00226 M)2 = 1.72 × 10–8 Kip = 1.4 × 10–8As Qsp is less than Ksp, a precipitate will not form. Therefore, the correct option is (d) Precipitation will not occur because Qis < Ksp.
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what if you measurd out more Fe then you calculated but the same amount of CUSO4 How would your amount of CU produced be affected
Answer:
Increase
Explanation:
Fe + CuSO4 - - > Fe2(SO)3 + Cu
If concentration of Fe increases, it will increase the frequency of collisions between the two reactants. Therefore the amount of Cu will also increase.
A Grignard synthesis begins with 6.00 g of bromobenzene and ends with 3.94 g benzoic acid. What is the percent yield of the benzoic acid
The percentage yield of the benzoic acid is mathematically given as
P= 84.56 %
Question Parameters:
A Grignard synthesis begins with 6.00 g
and ends with 3.94 g benzoic acid.
Generally, if 157 g of bromobenzene produced = 122 g of benzoic acid
Hence,6 g of bromobenzene will produce
X== (122 / 157 ) * 6
X= 4.66 g
Since the experimental yield of benzoic acid = 3.94 g
Therefore the Percentage yield
P = 3.94 / 4.66 * 100
P= 84.56 %
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The atoms of which element bond to one another in chains, rings, and networks?
1.
barium
2.
carbon
3.
iodine
4.
mercury
Submit An:
2 Fe203 + 3 C 4 Fe + 3 CO2
How many grams of Fe will be produced if 49.63 grams of CO 2 are produced?
Answer:
49.63 grams of CO2 is produced from the reaction of 3 moles of CO2 and 4 moles of Fe. Therefore, 4 moles of Fe is produced, which is equal to 192.16 grams of Fe.
Answer:49.63 grams of CO2... the girl on top is correct
Explanation:
A solution of pH 7 has
Group of answer choices
the same concentration of H+ and OH‑
more OH- than H+
no H+ and no OH-
more H+ than OH-
Answer: same concentration
Explanation:
H+ makes it more acidic, OH- makes is more basic. 7 is neutral so it has the same amount of both.
What is a base?
A. A substance that increases the concentration of oxygen in
solution
B. A substance that increases the concentration of OH ions in
solution
C. A substance that increases the concentration of H+ ions when dissolved
D. A substance that contributes chloride ions to the solution
Answer:
A base releases OH~ in a solution, so the answer is B
What kind of intermolecular forces act between a chloromethane molecule and a chloroacetylene molecule
Dipole to Dipole force
Explanation:
A dipole to dipole forces exists between these molecules