When 10.0 mL of 0.2 M iron(II) sulfate solution is added to 10.0 mL of 0.2 M iron(lII) nitrate, the resulting concentrations of Fe2+ and Fe3+ are Select one: a. 0.2 M and 0.2 M, respectively b.0.1 M and 0.1 M, respectively. c.0.4 M and 0.4 M, respectively.
Answers
The resulting concentrations of Fe²⁺ and Fe³⁺ ions are 0.003 M and 0.001 M, respectively.
To determine the resulting concentrations of Fe²⁺ and Fe³⁺ ions when 10.0 mL of 0.2 M iron(II) sulfate solution is added to 10.0 mL of 0.2 M iron(III) nitrate, we need to consider the stoichiometry of the reaction between Fe²⁺ and Fe³⁺.
The balanced chemical equation for the reaction between iron(II) sulfate (FeSO₄) and iron(III) nitrate (Fe(NO₃)₃) can be represented as follows:
2 Fe²⁺ + Fe³⁺ → 3 Fe²⁺ + 2 Fe³⁺
From the balanced equation, we can observe that two Fe²⁺ ions react with one Fe³⁺ ion, resulting in three Fe²⁺ ions and two Fe³⁺ ions.
Initially, we have 10.0 mL of a 0.2 M Fe²⁺ solution, which contains:
Concentration of Fe²⁺ = 0.2 M
Volume of Fe²⁺ solution = 10.0 mL
Therefore, the moles of Fe²⁺ initially present are:
moles of Fe²⁺ = concentration of Fe²⁺ × volume of Fe²⁺ solution
moles of Fe²⁺ = 0.2 M × 10.0 mL × (1 L / 1000 mL)
moles of Fe²⁺ = 0.002 mol
According to the stoichiometry of the reaction, 2 moles of Fe²⁺ will react with 1 mole of Fe³⁺. Therefore, the moles of Fe³⁺ initially present are:
moles of Fe³⁺ = 0.002 mol / 2
moles of Fe³⁺ = 0.001 mol
After the reaction, we have three times the initial moles of Fe²⁺, and two times the initial moles of Fe³⁺. Therefore, the resulting concentrations of Fe²⁺ and Fe³⁺ are:
Concentration of Fe²⁺ = (3 × moles of Fe²⁺) / total volume
Concentration of Fe²⁺ = (3 × 0.002 mol) / (10.0 mL + 10.0 mL) × (1 L / 1000 mL)
Concentration of Fe²⁺ = 0.003 M
Concentration of Fe³⁺ = (2 × moles of Fe³⁺) / total volume
Concentration of Fe³⁺ = (2 × 0.001 mol) / (10.0 mL + 10.0 mL) × (1 L / 1000 mL)
Concentration of Fe³⁺ = 0.001 M
Therefore, the resulting concentrations of Fe²⁺ and Fe³⁺ ions are 0.003 M and 0.001 M, respectively.
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Related Questions
When a glass or a watermelon is moved, the volume stays the same. When a liquid is poured into a glass, the volume and the shape change. When gas is used to fill a balloon and the balloon is popped, the volume stays the same. Help pls
Answers
Answer:
ITS A. (Give me brainliest!!)
When a glass or a watermelon is moved, the volume stays the same as they are in a fixed shape and the volume of a solid state. Option A correct.
What is the solid-state?A solid-state is a state of matter in which the molecules of matter are closely packed with each other with the maximum molecular force of attraction for a fixed shape.
Glass and watermelon are fixed in shape as they are made before and volume is also fixed and the molecules are fixed in definite shape and the volume cannot be changed.
Therefore, Option A correct. When a glass or a watermelon is moved, the volume stays the same as they are in a fixed shape and the volume of a solid state.
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Classify the statements based on whether they describe a weak or strong mobile phase in affinity chromatography. a. referred to as the elution buffer b. referred to as the application buffer c. mimics the pH, ionic strength, and polarity of the affinity ligand's natural environment d. readily removes the analyte from the affinity ligand e. a competing agent is used to displace the analyte from the affinity ligand f. The pH, ionic strength, or polarity is changed to decrease the association equilibrium constant between the analyte and affinity ligand g. promotes strong binding between the analyte and affinity ligand
Answers
Statements about weak and strong mobile phase in affinity chromatography include,
Weak mobile phase:
(d) Enables efficient dissociation of the analyte from the affinity ligand.
(e) Utilizes a competing agent to displace the analyte from the affinity ligand.
(f) Involves modifying the pH, ionic strength, or polarity to reduce the association equilibrium constant between the analyte and affinity ligand.
Strong mobile phase:
(a) Referred to as the elution buffer, it facilitates the release of the analyte from the affinity ligand.
(b) Known as the application buffer, it promotes the initial binding of the analyte to the affinity ligand.
(c) Mimics the pH, ionic strength, and polarity of the affinity ligand's natural environment, enhancing favorable interactions.
(g) Fosters robust binding between the analyte and affinity ligand, ensuring strong affinity interactions.
In affinity chromatography, the choice between a weak or strong mobile phase depends on the desired outcome.
A weak mobile phase is employed to remove the analyte from the affinity ligand or decrease binding strength, achieved through efficient dissociation, displacement, or modification of relevant factors.
Conversely, a strong mobile phase is used to facilitate binding interactions, encompassing initial application, mimicking the natural environment, and promoting robust binding between the analyte and affinity ligand.
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a quantity of 12.68 ml of a koh solution is needed to neutralize 0.3658 g of khp. what is the concentration (in molarity) of the koh solution? (the molar mass of khp is 204.2 g/mol.
Answers
a quantity of 12.68 ml of a koh solution is needed to neutralize 0.3658 g of khp.the concentration (in molarity) of the koh solution is 0.0825 (M)..
KOH & KHP are reacting in 1:1 ratio . KOH + KHP -------------> K2P + H2O. Mole of KHP = Weight given / Molar mass = 0.2138 / 204.2 = 0.001047 mole. So, to neutralize it , the mole of KOH have to be 0.001047 mole .We know Molarity X Volume ( in liter ) = moleSo, Molarity X (12.68 / 1000) = 0.001047 . So, Molarity of KOH = 0.0825 (M).
The quantity of a substance in a particular solution volume is characterized as its molarity (M). The number of moles of a component per litre of a solution is known as molarity. The molecular concentration in a solution is also another name for molarity. Molarity concentration calculates the quantity of a substance per unit volume of the solution and specifically the concentration of a solute in a solution. The most used molarity unit in chemistry is the amount of moles per litre, denoted by the unit sign mol/L or mol/dm3 in SI units. The amount of moles per litre, represented by the si sign mol/L or mol/dm3 in SI units, is the most often used unit denoting molarity in chemistry.
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I am a member of the nitrogen family with 16 neutrons.
Answers
Answer:
phosphorus
Explanation:
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The element having 16 neutrons in group 15 for the periodic table is phosphorus. Also known as the nitrogen family, group 15 is.
Each of the chemical substances that make up Group 15 (Va) in the periodic table of elements belong to the nitrogen group. Nitrogen (N), phosphorous (P), arsenic (As), arsenic (Sb), bismuth (Bi), plus moscovium (Mc) make up the group. While chemically distinct from one another, the elements exhibit certain basic commonalities in their behaviour, and these similarities are a result of the shared characteristics of their atoms' electronic structures. The element having 16 neutrons in group 15 for the periodic table is phosphorus. Also known as the nitrogen family, group 15 is.
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(PLEASE HELP) which two statements correctly describe forces? A.forces organize matter into patterns B.all fundamental forces are noncontact forces C.all forces act at a distance D.forces are always unbalanced
Answers
Answer:
Forces organize matter into patterns. all fundamental forces are noncontract forces
Explanation:
Forces organize matter into patterns and all fundamental forces are noncontract forces. Hence, options A and B are correct.
What is force?The push or pull on an object with mass causes it to change its velocity.
Inertia is the force that holds the universe together.
A contact force is a force which acts on an object coming physically in contact with it.
All four known fundamental interactions are non-contact forces: Gravity is the force of attraction that exists among all bodies that have mass.
Hence, options A and B are correct.
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what is enviorement.
Answers
Answer:
the natural and man made thing which we can see around us is known as environment. not enviorement.
Answer:
Environment means anything that surrounds us. It can be living (biotic) or non-living (abiotic) things. It includes physical, chemical and other natural forces. ... In the environment there are different interactions between animals, plants, soil, water, and other living and non-living things.
A solution containing which one of the following pairs of substances will be a buffer solution? A solution containing which one of the following pairs of substances will be a buffer solution? AgBr, HBr CuCl, HCl CsI, HI KI, HI none of the above
Answers
Which of the halves that of compounds will make up the buffer solution in a solution Any of the halves that of substances, when present in a solution, will make it a buffer solution None of the above.
What exactly is a buffer solution?As a result, it's essential to have liquids whose pH doesn't really alter even when strong alkalies nor strong acids are added. These are referred to as buffer solutions. The ability of a buffer to withstand a change in pH is known as buffer capacity.
What makes it a buffer solution?it can neutralize a small amount of additional acid or base, the pH of the liquid is kept comparatively steady.
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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:
According to the law of definite proportions, any two samples of KCI have
Answers
Answer:
Explanation:
According to the Law of Definite Proportions , a chemical compound will always have exactly the same proportion of elements by mass. ... The two elements that form potassium chloride are potassium, which has a molar mass of 39.0983 g / mol, and chlorine, which has a molar mass of 35.4527 g / mol.
Why must a special saw be used when removing a cast?
A. Because it is very painful to have a cast removed.
B. Because a cast is made of material that requires a special saw.
C. Because a regular saw is not strong enough to cut the cast.
D. Because a regular saw might cut a person’s skin.
Answers
chloride per milliliter (MW of CaCl2 = 147) [Round to the nearest whole number 5. What weight of magnesium chloride (MgCl2, formula weight = 95.3) is required to prepare 200 ml solution that is 5.0 mi
Answers
The weight of magnesium chloride required to prepare the 200 ml solution that is 5.0 M is approximately 48 grams.
To calculate the weight of magnesium chloride (\(MgCl_{2}\)) required to prepare a 200 ml solution that is 5.0 M, we need to use the formula: Weight (in grams) = Volume (in liters) × Concentration (in moles/liter) × Molecular Weight (in grams/mole)
First, we convert the volume from milliliters to liters by dividing it by 1000: Volume = 200 ml ÷ 1000 = 0.2 L. Next, we multiply the volume, concentration, and molecular weight: Weight = 0.2 L × 5.0 mol/L × 95.3 g/mol = 47.65 grams
Rounding to the nearest whole number, the weight of magnesium chloride required to prepare the 200 ml solution that is 5.0 M is approximately 48 grams.
This calculation ensures that the desired concentration is achieved by accurately measuring the appropriate amount of magnesium chloride, taking into account its molecular weight and the desired volume of the solution.
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What is the name of the acid CH3COOH
Answers
Answer:
CH3COOH is Acetic acid.
What can you find on the periodic table?
A. the chemical formula for salt
B. the number of hydrogen atoms that are in a molecule of water
C. all the compounds that exist in the universe
D. all the elements that have been discovered
Answers
Chemical properties describe matter based on its ability to change into___
A. A new substance
B. The same thing
C. Water
D. A powder
Answers
Answer:
A. A new substance
Explanation:
sorry if its wrong if its right your welcome <3
Which solution should she put in the What should Maria do to keep safe as she carries out her experiment?
Answers
To ensure safety while carrying out her experiment, Maria should follow proper laboratory protocols and take necessary precautions like handle equipment and glassware carefully,wear appropriate personal protective equipment (PPE),read safety data sheets (SDS) to understand the proper handling,never work alone in the laboratory,etc.
Here are some recommendations:
1.Wear appropriate personal protective equipment (PPE), including safety goggles, lab coat, and gloves, to protect her eyes, body, and hands from potential hazards.
2.Familiarize herself with the properties and potential risks associated with the chemicals she will be working with. Read safety data sheets (SDS) to understand the proper handling, storage, and disposal procedures.
3.Work in a well-ventilated area or use a fume hood to minimize exposure to any fumes or gases that may be generated during the experiment.
4.Handle equipment and glassware carefully to prevent accidents or breakages. Ensure that all equipment is in good condition and appropriate for the experiment.
5.Follow proper techniques for measuring, mixing, and transferring chemicals to prevent spills or splashes. Use appropriate containers and labels to clearly identify and store chemicals.
6.Be aware of emergency procedures, including the location of safety equipment such as fire extinguishers, eyewash stations, and emergency showers.
7.Never work alone in the laboratory. Inform a supervisor or lab mate about the experiment and maintain communication throughout the process.
By following these safety measures, Maria can minimize risks and ensure a safe working environment during her experiment.
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How many isomers are there in C7H16 ?
a. 6
b. 7
c. 8
d. 9
Answers
Which substance is considered to be neutral on the pH Scale? *
2 points
battery acid
pure water
bleach
ocean water
Answers
Answer:
Pure Water
Explanation:
Battery acid is well and acid
Bleach is a base
Ocean water is impure so it could lean either way
What is the charge of an atom with and equal number of protons and electrons
Answers
Because they have an equal number of negative charges (electrons) and positive charges (protons). So, they will cancel out and the answer will be 0.
Which is NOT a form of thermal energy transfer?
O conduction
O convection
O spontaneity
O radiation
Answers
Answer:
C I think, haven't done this in awhile
Explanation:
I took science
What should you do if you are using a balance that has persistent fluctuations in mass?.
Answers
When using a balance that has persistent fluctuations in mass it is best to
contact your Teaching assistant or instructor to adjust the balance.
What is a Balance?A balance is a tool which is commonly used in the laboratory to measure
the mass of a substance. This is usually done by placing the mass on it and recording the reading.
In cases where balance that has persistent fluctuations in mass it is best to
contact your Teaching assistant or instructor to adjust the balance which
could be done by using the adjustment knob etc.
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Calculate the average atomic mass of silver if 13 out of 25 atoms are silver -107 and 12 out of 25 atoms are silver -109
Answers
Answer: 107.96amu
Explanation:
(107x.52)+(109x.48)
55.64+52.32=107.96
HELPPP OMG THIS IS SO HARD ITS FOR SCIENCE LOL
Answers
Answer:
The nucleus of the atom contains two subatomic particles, the protons which are positively (+) charged and the neutrons which are neutral (no charge).
Explanation:
What happens to molecules of water when water boils?
Energy is removed from water in the liquid state. As a result, water's molecules speed up,
the empty space between them stays the same, and water changes from a liquid to a gas.
This process is exothermic.
Energy is removed from water in the liquid state. As a result, water's molecules speed up,
the empty space between them decreases, and water changes from a liquid to a gas. This
process is endothermic.
Energy is added to water in the liquid state. As a result, water's molecules speed up, the
empty space between them increases, and water changes from a liquid to a gas. This
process is endothermic.
Energy is added to water in the liquid state. As a result, water's molecules speed up, the
space between them stays the same, and water changes from a liquid to a gas. This
process is exothermic.
Answers
Answer:
Energy is added to water in the liquid state. As a result, water's molecules speed up, the empty space between them increases, and water changes from a liquid to a gas. This process is endothermic.
Explanation:
I got it right so I hope you do to.
Which set of numbers will balance the following equations? 1's have been included for clarity.__Mn3N4 + __NaF --> __MnF4 + __Na3N a 1; 4; 1; 4 b 1; 4; 3; 2 c 1; 12; 3; 4 d 3; 2; 3; 2
Answers
ANSWER
Option C
EXPLANATION
Given that;
\(\text{ ----- Mn}_3N_4\text{ }+\text{ ---- NaF }\rightarrow\text{ ---- MnF}_4\text{ }+\text{ ---Na}_3N\)In the reaction above, we have the following data
At the reactants side;
3 atoms of manganese
4 atoms of nitrogen
1 atom of sodium
1 atom of fluorine
At the products side
1 atom of manganese
4 atoms of fluorine
3 atoms of sodium
1 atom of nitrogen
To balance the above equation, apply the law of conservation mass
Law of conservation of mass states that matter can neither be created nor destroyed but can e transformed from one formato another.
To balance the equation, 1 mole of Mn3N4 reacts with 12 moles of Na Tto give 3 moles of MnF4 and 4 moles of Na3N
So, the new equation becomes
\(\text{ Mn}_3N_4\text{ }+\text{ 12NaF }\rightarrow\text{ 3MnF}_4\text{ }+\text{ 4Na}_3N\)The following data can be deduced in the above equation
At the reactants side
3 atoms of Mn
4 atoms of N
12 atoms of Na
12 atoms of F
At the products side
3 atoms of Mn
12 atoms of F
12 atoms of Na
4 atoms of N
Looking atthe vabove data, the number of atoms of each element at the reactants side is equal to the number of atoms of same elements at the products side.
Hence, the correct answer is option Ce
u
for example, when sodium chloride is mixed with water, the sodium and chloride ions interact with water molecules via ion-dipole forces. the positive blank ions interact with the blank poles of water molecules, while the negative blank ions interact with the blank poles.
Answers
The positive sodium ions interact with the negative poles of water molecules, while the negative chloride ions interact with the positive poles.
Sodium chloride (NaCl), commonly known as table salt or simply salt, is a white crystalline chemical compound that is produced by the combination of sodium and chlorine ions in equal quantities.
Ion-dipole forces are a type of intermolecular force that occurs between an ion (charged atom or molecule) and a polar molecule.
These forces are responsible for the solvation of ions in polar solvents like water and are the driving force behind many chemical reactions that occur in solutions.
In the case of sodium chloride in water, ion-dipole forces lead to the dissolution of sodium chloride in water, forming a solution of sodium chloride in water.
Therefore, the positive sodium ions interact with the negative poles of water molecules, while the negative chloride ions interact with the positive poles.
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calculate the number of magnesium atoms in a 120.0g sample of forsterite mg2sio4. be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
Answers
The number of magnesium atoms present in forsterite are 10.272 x 10²³
Equation :First we have to calculate the moles of magnesium
moles of forsterite = mass of forsterite / molecular mass of forsterite
moles of forsterite = 120.0 g / 140.69 g/mol
moles of forsterite = 0.8529 mole
Now we have to calculate the number of magnesium atoms
The formula of forsterite is mg2sio4
In the forsterite molecule, there 2 atoms of magnesium, 1 atoms of silicon and 4 atoms of oxygen.
As, 1 mole of forsterite contains 2 x 6.022 x 10²³ number of magnesium
So, 0.8529 mol of forsterite contains
= 0.8529 x 2 x 6.022 x 10²³
= 10.272 x 10²³ number of magnesium atoms
Therefore, the number of magnesium atoms present in forsterite are 10.272 x 10²³.
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please help im failing
Answers
Answer:
the second one
Explanation:
because there are 3 of Na and one N
How about the Neon, Argon, Oxygen and Water molecules, do they take up more space as a liquid or as a solid?
PLS HELP
Answers
The substances would take up more space as gas than as a solid.
What is the space taken up?We know that a solid has a definite shape and a definite volume. We know what the space that a solid is going to occupy is because the space that it can occupy is fixed. This is quite important to be at the back of our minds as we discuss.
A gas does not take up a definite space. We know that a gas does take up the volume of the object thus we can be bold to say that the gas is going to take up more space than the solid in all the cases.
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sterile isopropyl alcohol (ipa) bottles did not arrive in the supply order. what action should compounding personnel take?
Answers
Compounding personnel should contact the supplier to follow up on the delivery of the sterile isopropyl alcohol (IPA) bottles that did not arrive in the supply order. The personnel should request an estimated time of arrival and make sure to provide the exact details of the order.
If the sterile isopropyl alcohol (IPA) bottles did not arrive in the supply order, the compounding personnel should take the following steps:
It is important for the compounding personnel to take swift action in this situation to ensure that the necessary supplies are obtained and that compounding activities can continue without disruption.
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6th edition before we begin, let's first establish an understanding of basic terminology. it may be harder than you think to clearly define what is a chemical versus a chemical reaction. to help us better differentiate between closely related terms, review the words listed here. sort each of the words into the three categories: contains chemicals, chemical reaction, or neither.
Answers
Answer:
Chemicals are substances in any form of matter with a chemical composition and property. Chemical reaction involves the combination of two or more different atoms chemically combined together, which are not easily separated.
Explanation:
CHEMICALS
Vitamin \(B_{1}\)proteingraniteorangesCHEMICAL REACTIONS
neutralisationcombustionbleachingphotosynthesisNEITHER
sunlightheatrainbow