PART A:

How many grams of sodium would react with 160 g of bromine, Br2, to produce sodium bromide?


PART B:

If 20g of propane burn in oxygen, how many molecules of water are produced?


i’m so so lost on mass stoichiometry some1 pls help :,))

Answers

Answer 1

Given information is that the mass of bromine is 160g and we have to calculate the grams of sodium to react with bromine to produce sodium bromide Balanced Chemical equation for the reaction is: 2 Na + Br2 → 2 Na Br For every 1 mole of bromine

2 moles of sodium is required. The molar mass of Na is 23g and the molar mass of Br is 80g.Hence, The Number of moles of bromine = 160/80 = 2 moles For 2 moles of bromine, The Number of moles of Sodium required is = 4 moles∴ The mass of Sodium = 4*23 = 92 grams Hence, 92 grams of sodium would react with 160 g of bromine to produce sodium bromide. We are given that 20g of propane burn in oxygen and we have to calculate the number of molecules of water produced during the reaction .

Balanced chemical equation for the reaction is: C3H8 + 5 O2 → 3 CO2 + 4 H2OTo solve this question, first we have to calculate the number of moles of propane used Number of moles of propane = mass/molar mass=20/44 = 0.4545 moles From the balanced chemical equation, we can see that 1 mole of propane gives 4 moles of water are the molecules Therefore, the number of moles of water produced = 0.4545 × 4 = 1.818The number of molecules can be calculated using Avogadro's number which is 6.022 × 10^23 molecules/mol.∴ The number of molecules of water produced = 1.818 × 6.022 × 10^23= 1.093 × 10^24 molecules of water are produced.

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Related Questions

Which is a diatomic molecule?

A) Ar
B) CO
C) CO2
D) NaCl

Answers

B) CO Carbon Monoxide

1) What is the most dangerous room in the world? How is it secured?

Answers

Answer:

Radioactive Basement in Chernobyl

"We had to be especially cautious near roads and in the city of Pripyat, there are regular security patrols in those areas. Unfortunately, the legal 'day' tours are not allowed to enter any of the buildings in Pripyat as the structural integrity of some buildings is questionable."

Explanation:

. arrange the following solutes in the order of increasing solubility in water: ne, f2, nai. question 12 options: (a) ne < f2 < nai (b) nai < ne < f2 (c) f2 < ne < nai (d) ne < nai < f2 (e) nai < f2 < ne g

Answers

The correct answer is (a) ne < f2 < nai. Solubility refers to the ability of a substance (solvent) to dissolve another substance (solute) to form a homogenous mixture.

The correct answer is (a) ne < f2 < nai. Solubility refers to the ability of a substance (solvent) to dissolve another substance (solute) to form a homogenous mixture. In this case, water is the solvent and ne, f2, and nai are the solutes. When comparing the solubility of these substances in water, we need to consider their molecular structure and polarity. Ne (neon) is a noble gas that exists as a monoatomic molecule, meaning it has no polarity and cannot form hydrogen bonds with water molecules, making it the least soluble among the three. F2 (fluorine) is a diatomic molecule that is highly electronegative and polar, allowing it to form hydrogen bonds with water molecules, making it more soluble than neon. Nai (sodium iodide) is an ionic compound that dissociates in water to form Na+ and I- ions, which are highly polar and interact strongly with water molecules, making it the most soluble among the three. Therefore, the correct order of increasing solubility in water is ne < f2 < nai.

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Water has the following composition: pH = 7.8 HCO32 = 85 mg/L as CaCO3 Ca²+ = 32 mg/L as CaCO3 Mg2+ = 40 mg/L as CaCO3 The following three questions pertain to this water. What is the highest theoretical concentration of Ca2+ (M) that can be dissolved at this pH in equilibrium with Ca(OH)₂(s) assuming no other calcium solids will form? Note: Don't be alarmed - it will be a large number! Ca(OH)(s) <--> Ca²+ + 2OH Kp-10:53

Answers

The first step in solving this problem is to calculate the activity product of calcium ions in the water to determine the saturation state of calcium with respect to Ca(OH)₂ (s).Then, using the solubility product (Ksp) of calcium hydroxide, we can calculate the theoretical maximum concentration of calcium ions in the water.

For Ca(OH)₂(s), the equilibrium expression is Ca(OH)(s) <--> Ca²+ + 2OH Kp-10:53The equilibrium constant, Kp-10:53, for this reaction is equal to the solubility product of Ca(OH)₂ (s) because it is an ionic solid. The Ksp of Ca(OH)₂ (s) is given as Ksp= [Ca²+][OH]². Using this, we can calculate the activity product, Q, for calcium ions in the water at equilibrium with Ca(OH)₂ (s):Q = [Ca²+][OH]²

the activity product of calcium ions in the water is:Q = [Ca²+][OH-]²= [Ca²+](1.58 x 10-8)²= 3.97 x 10-17The equilibrium constant, Kp-10:53, is equal to Ksp= [Ca²+][OH-]², so we can write:Ksp = [Ca²+](1.58 x 10-8)²Ksp/(1.58 x 10-8)² = [Ca²+]= (10-10.53)/(1.58 x 10-8)² = 3.24 x 10-6 mol/LThis is the theoretical maximum concentration of calcium ions that can exist in the water without precipitation of calcium solids. Note that this is an extremely high concentration of calcium ions.

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How many grams are in 4.00 moles of Cr2O3?

Answers

Answer:

607.9616 grams

Explanation:

Hope this helped!!

A balloon containing helium gas expands from 230 mL to 860 mL as more helium is added. What was the initial quantity of helium present if the expanded balloon contains 3.8 × 10-4 mol, assuming constant temperature and pressure? Which of the variables are known?

Answers

Answer and Explanation:

For computing the initial quantity of helium we have to apply the law of ideal gas which is shown below:

\(pV=nRT\\)

\(n=\dfrac{pV}{RT}\)

Now we have to compute the ratio between the initial and the final numbers of moles which is

\(\dfrac{n_1}{n_2}=\dfrac{\dfrac{p_1V_1}{RT_1}}{\dfrac{p_2V_2}{RT_2}}\)

The statement defines that

\(T_1=T_2,~p_1=p_2.\)

Therefore

\(\dfrac{n_1}{n_2}=\dfrac{V_1}{V_2}\)

\(\dfrac{n_1}{3.8\times10^{-4}}=\dfrac{230}{860}\iff\\\\ n_1=\dfrac{3.8\times10^{-4}\times230}{860}\)

\(\boxed{n_1\approx1.0\times10^{-4}~mol}\)

And, the variables are known is starting volume and ending gas quantity

Answer:

beginning volume and ending quantity of gas

Explanation:

the form of energy that your lunch represents is?
A) electrical
B) chemical
C) thermal
D) nuclear

Answers

The answer is B. Have a good day.

What is an example of kinetic energy at work,1 a ball lodge in the tree, 1 a frisbee flaying in the air, 3 a car in the garage

Answers

Answer:

a frisbee flaying in the air

Explanation:

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

\( K.E = \frac{1}{2}MV^{2}\)

Where;

K.E represents kinetic energy measured in Joules. M represents mass measured in kilograms. V represents velocity measured in metres per seconds square.

Hence, an example of kinetic energy at work is a frisbee flaying in the air because it would possess energy due to its motion in the air.

Questions
Answer all please

QuestionsAnswer all please

Answers

Answer:

Both,

Both,

Vertical

Explanation:

When you push a lawn mower, you can be moving up and down or across, when your pushing a wheel barrel you can do the same, when you do a push up your going up and down which is vertical.

What is the volume of a solution that has a specific gravity of 1.2 and a mass of 185 g?

Answers

154 ml is your answer. I will gladly explain it to you if you need it.

Help meeee please:) worth 76 pointss

Help meeee please:) worth 76 pointss

Answers

Answer:

the particles would not change. solids have definite shape and volume

Explanation:

Answer:

depending on what type of solid for example ice is a solid but melts in container B so its act is melting into a liquid ^^

Explanation:

0.2 mol of the transition metal (M) comhine with excess chlorine gas to form 30.3 g of MCl3. What is the electronic configuration of the ion of the metal (M) in this compound?
(Sc=45, Cr=52, Fe=55.8, Co=58.9, Cl=35.5)

A) [Ar], 3d3
B)[Ar], 3d5
C)[Ar], 3d6
D) [Ne], 3s2 3p6​ ​

Answers

Given metallic chloride formula =MCl3

Means M has valency 3

It belongs to Nitrogen(N) family.

The elements given by Nitrogen,Phosphorus,Arsenic,Stubnum(Tin),Bismuth.

But the condition is that its transition element.

The element is vanedium(V)

EC given by

\(\\ \sf\longmapsto 1s^22s^22p^63s^23p^64s^23d^3\)

\(\\ \sf\longmapsto [Ar]3d^3\)

What percentage of the mass of hydrofluoric acid (HF) is contributed by hydrogen?

A. 10%
B. 50%
C. 1%
D. 5%​

Answers

This problem is asking for the percent by mass of hydrogen in hydrofluoric acid. At the end, the answer turns out to be D. 5%​ as shown below:

Percent compositions:

In chemistry, percent compositions are used for us to know the relative amount of a specific element in a compound. In order to do so for hydrogen, we use the following formula, which can also be applied to any other element in a given compound:

\(\% H=\frac{m_H*1}{M_{HF}}*100\%\)

Where \(m_H\) stands for the atomic mass of hydrogen and \(M_{HF}\) for the molar mass of hydrofluoric acid. In such a way, we plug in the atomic masses of hydrogen (1.01 g/mol) and fluorine (19.0 g/mol) to obtain:

\(\% H=\frac{1.01g/mol*1}{1.01g/mol+19.0g/mol}*100\%\\\\\% H=5\%\)

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The unit of specific heat capacity is …
J/kg
J/oC
Joule
J/kg.oC

Answers

Answer:

J/kg.oC

Explanation:

The unit of specific heat capacity of a substance is J/kg*°C (joule per kilogram-degree)

co, co2, so2, no, and no2, most hydrocarbons, and most suspended particles which are mixed vertically and horizontally in our atmosphere and then dispersed and diluted by churning before they react with other compounds are labeled as what general category?

Answers

The general category for compounds like CO, CO2, SO2, NO, NO2, most hydrocarbons, and most suspended particles which are mixed vertically and horizontally in our atmosphere and then dispersed and diluted by churning before they react with other compounds is: air pollutants.


Air pollutants are any type of gaseous, solid, or liquid substance that are released into the atmosphere. These pollutants come from a variety of sources including industrial facilities, vehicles, and the burning of fossil fuels. They can also be naturally occurring and caused by events like volcanic eruptions.


Pollutants such as CO, CO2, SO2, NO, NO2, hydrocarbons, and suspended particles can enter the atmosphere in a variety of ways. In many cases, they can be released directly from an industrial facility or a vehicle. They can also be released as a result of chemical reactions that occur in the atmosphere or from other sources such as the burning of fossil fuels.


Once in the atmosphere, air pollutants can mix vertically and horizontally with other substances and be dispersed and diluted by churning. This churning process can cause pollutants to react with other compounds such as ozone and form secondary pollutants. These secondary pollutants are often more harmful than the original pollutants and can contribute to smog and acid rain.


Air pollution can have negative impacts on both human health and the environment. Some of these impacts include increased respiratory problems, decreased visibility, and reduced crop yields. To reduce the amount of air pollution, governments and businesses are working to reduce emissions and promote cleaner technologies.


In conclusion, compounds such as CO, CO2, SO2, NO, NO2, hydrocarbons, and suspended particles that are mixed vertically and horizontally in our atmosphere and then dispersed and diluted by churning before they react with other compounds are categorized as air pollutants. These pollutants can cause a variety of health and environmental issues if not managed properly.

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silver nitrate decomposed when it is strongly
heated according to equation below :
2AgNO3 ->2Ag + 2NO2 + O2
In an experiment, a student heated 85g of
silver nitrate.Calculate the mass of silver
produced at room condition. (Relative atomic
mass : N = 14,0 =16, Ag =108)

Answers

The mass of silver produced at room conditions is approximately 54.324 grams.

To calculate the mass of silver produced, we need to determine the number of moles of silver nitrate used in the reaction, and then use the stoichiometry of the balanced equation to find the number of moles of silver produced.

First, let's calculate the number of moles of silver nitrate used:

Molar mass of AgNO3 = 108 + 14 + (3 * 16) = 169 g/mol

Number of moles of AgNO3 = Mass of AgNO3 / Molar mass of AgNO3

Number of moles of AgNO3 = 85 g / 169 g/mol

Number of moles of AgNO3 ≈ 0.503 moles

According to the balanced equation, 2 moles of AgNO3 produce 2 moles of Ag.

Since the molar ratio is 1:1, the number of moles of Ag produced is also 0.503 moles.

Now, let's calculate the mass of silver produced:

Molar mass of Ag = 108 g/mol

Mass of Ag = Number of moles of Ag * Molar mass of Ag

Mass of Ag = 0.503 moles * 108 g/mol

Mass of Ag ≈ 54.324 g

item 3 steel is an alloy containing fe atoms and c atoms. which of the following diagrams best represents the particle-level structure of steel?

Answers

An alloy is obtained when an element is combined with another physically and not chemically. The image that accurately represents steel is the image in which carbon atoms are sandwiched between iron atoms.

Steel is an alloy of iron and carbon. In an alloy, the atoms one element is sandwiched in between atoms of another element in its crystal. Usually, allows are formed to improve certain desired properties of substances. The percentage of carbon included in steel depends on its intended use.

The image that can be used to represent the formation of steel is the image shown in B. In that image, small atoms of carbon are seen sandwiched between larger iron atoms. That is the accurate description of steel.

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Answer:

C) equally shared and form nondirectional bonds

Explanation:

In metals, electrons are free to move as described by the electron sea model. Electrons are shared equally among atoms, and the structure is based on simple close-packed structures that contain no fixed directional bonds.

Answer all the questions in the spaces provided
1. Name the elements present in the following compo
a. Sodium bromide (2mks)
b. Lead oxide (2mks)

Answers

Answer:

the volume of right circular cone is 5 liter calculate the volume of the two parts in to which the cone is divided by a plane parallel to the base one third on the way down from the vertex to the base give your answer to the nearest ml

solution Hydrolysis Net Ionic Equation ai Na,CO, Al(NO), NaOAc Ka or Kb Expression value Ka or Kb

Answers

The net ionic equation of the hydrolysis reaction of Al(NO3)3 is:

Al3+ + H2O ⇌ Al(OH)2+ + H+The Kb expression value of Al(OH)2+ is 5.6 x 10-17.

Explanation:

Hydrolysis is the reaction between a substance with water. The hydrolysis of salt of a weak acid or base is considered in this case. Aluminum nitrate, Al(NO3)3, is a salt of a weak acid and a strong base. This salt is acidic in nature due to the presence of nitrate ion in the solution.

The nitrate ion does not hydrolyze, and remains as it is in the solution.Hydrolysis of Al(NO3)3 leads to the formation of Al3+ and NO3- ions. Al3+ ion acts as a weak acid in the presence of water and gets hydrolyzed. The net ionic equation of the hydrolysis reaction of Al(NO3)3 is:Al3+ + H2O ⇌ Al(OH)2+ + H+Aluminum hydroxide ion, Al(OH)2+ acts as a weak base in the presence of water and gets hydrolyzed further to form Al(OH)3 and H+ ions. Al(OH)2+ ⇌ Al(OH)3 + H+Al(OH)3 is insoluble and forms a gel-like precipitate. The acidic and basic properties of Al3+ and Al(OH)2+ ions can be measured by finding the value of Kb and Ka respectively. The Kb expression value of Al(OH)2+ is 5.6 x 10-17.Kb expression is used for weak base, and the expression is given as follows:

Kb = [Al(OH)3][H+]/[Al(OH)2+]The value of Kb expression is 5.6 x 10-17.

About Hydrolysis

Hydrolysis is the decomposition of substances in a chemical reaction caused by water. The chemical reaction in hydrolysis breaks down water molecules into hydrogen cations and hydroxide anions. Hydrolysis depends on the chemistry, solubility, degree of acidity and oxidation-reduction of each compound.

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what ionic compound is gold found in

Answers

Gold is found in various ionic compounds, but one of the most well-known and commercially significant compounds is gold chloride, also known as auric chloride or gold(III) chloride.

The chemical formula for gold chloride is AuCl₃. Gold chloride is an ionic compound composed of gold cations (Au³⁺) and chloride anions (Cl-). It is a yellow-orange solid that is highly soluble in water. Gold chloride can be formed by reacting the gold metal with chlorine gas or by dissolving the gold metal in aqua regia, which is a mixture of concentrated nitric acid and hydrochloric acid.

Gold chloride has several uses and applications. It is commonly used in the field of nanotechnology for the synthesis of gold nanoparticles. These nanoparticles have unique optical, electronic, and catalytic properties, making them valuable in various fields such as medicine, electronics, and materials science.

In addition to gold chloride, gold can also form other ionic compounds with different anions, such as gold bromide (AuBr), gold iodide (AuI), gold sulfide (Au2S), and gold cyanide (AuCN). These compounds have their own unique properties and applications.

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which mineral would most likely be found in a necklace? graphite, halite, sulfur, or emerald?​

Answers

Answer:

D is the answer because I think it is right plus I know they don't use two off them

Answer:Emerald is a gemstone that might be found in a necklace.

Explanation:Trust me i just got it right and i get all my other questions right.

if an airplane travles 4000 miles south in 8 hours what is its velocity

Answers

Answer:

Velocity = Distance Covered÷Time Taken

Velocity = 4000÷8

V = 500

Where is aggregate generally found?

Answers

Answer:

They are generally found in mines

aggregate are generally found in mines

As the term "peroxide" is used in Chapter 10, it can refer to which structure(s)? O ROOR O ROOH 0 0 O RCOOCR OTwo of these choices. O Three of these choices.

Answers

The structure which referred to peroxide is ROOR, ROOH, RCOOOCOR.

All the three structure show peroxide because in all the structure two oxygen atom is connected with single covalent bond.

Peroxides are a class of chemical compounds with the formula R-O-O-R, where R can be any element. The peroxide group, also known as the peroxo group, is the O-O group found in peroxides. The nomenclature varies to some extent. Hydrogen peroxide, also referred to as "peroxide," is the most prevalent peroxide.

Hydrogen peroxide is an antiseptic liquid that is often used to treat cuts or other skin wounds and kill germs. It comes in a brown bottle. However, peroxide is frequently employed in non-medical contexts, such as for stain removal, cleaning, and disinfection.

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the diels-alder reaction is one example of what type of reaction?

Answers

The Diels-Alder reaction is an electrocyclic process that involves the [4+2]cycloaddition of 2 and 4 electrons from the dienophile and 4 electrons from the conjugated diene (an alkene or alkyne).

What is a case of a Diels-Alder reaction?

A conjugated diene and an alkene undergo a cycloaddition event in the Diels-Alder reaction. A 1,4-addition product is created by this reaction. The reaction of 1,3-butadiene with maleic anhydride serves as an example.

Which reaction most accurately sums up the Diels-Alder reaction?

Consequently, [4+2] cycloaddition is the name given to the cyclic addition of diene and dienophile. This shows that a Diels-Alder reaction is best described by the [4+2] cycloaddition.

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Using the data table below and the method of initial rates, determine the rate law and rate constant for the reaction at a particular temperature. 2NO2(g)+F2(g)⟶2NO2F(g)
Trial [NO2],molL [F2],molL initial rate,molL s
1 1.0×10−3 2.0×10−3 5.0×10−2
2 1.0×10−3 4.0×10−3 1.0×10−1
3 2.0×10−3 2.0×10−3 1.0×10−1
4 3.0×10−3 6.0×10−3 4.5×10−1

Answers

The rate law for the reaction is Rate = \(k[NO2]^1[F2]^1\), and the rate constant is k = 25.0 L/(mol·s).

We must analyse the data to find the reaction's rate law and rate constant. Examine the data table:

Trial 1: [NO2] = 1.0×10^(-3) mol/L
[F2] = 2.0×10^(-3)

Initial rate: 5.0×10^(-2) mol/(L·s).

Trial 2: [NO2] = 1.0×10^(-3) mol/L [F2] = 4.0×10^(-3)

Initial rate: 1.0×10^(-1) mol/(L·s).

Trial 3: [NO2] and [F2] = 2.0×10^(-3) mol/L.

Initial rate: 1.0×10^(-1) mol/(L·s).

Trial 4: [NO2] = 3.0×10^(-3) mol/L [F2] = 6.0×10^(-3)

Initial rate: 4.5×10^(-1) mol/(L·s)

From trial 1 to trial 3, doubling the [NO2] concentration while maintaining [F2] doubles the initial rate. This suggests a first-order reaction with respect to [NO2].

Keeping the [NO2] constant, doubling the [F2] concentration from trial 1 to trial 2 doubles the original rate. The response is first-order with regard to [F2].

After determining the reaction sequence for each reactant, we can formulate the rate law expression:

\(Rate = k[NO2]^1[F2]^1\)

1+1=2 since both reactants are first order.

We can use any trial to get the rate constant (k). Trial 1:

5.0×10^(-2) mol/(L·s)=k(1.0×10^(-3) mol/L)(2.0×10^(-3) mol/L)

Simplifying, k = 25.0 L/(mol·s)/(5.0×10^(-2))/(1.0×10^(-3)×2.0×10^(-3)).

Thus, the reaction rate rule is Rate = \(k[NO2]^1[F2]^1\) with k = 25.0 L/(mol·s).

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Find out how many atoms will fit in one apple . Adius of an apple is about 3.5 cm and the radius of an atom is 1.5 angstrom

Answers

Answer:

1.3 × 10²⁵ atoms

Explanation:

Step 1: Calculate the volume of an apple

The radius of an apple is 3.5 cm (3.5 × 10⁻² m). If we assume it is a sphere, we can calculate its volume using the following expression.

V = 4/3 × π × r³

V(apple) = 4/3 × π × (3.5 × 10⁻² m)³ = 1.8 × 10⁻⁴ m³

Step 2: Calculate the volume of 1 atom

The radius of 1 atom is 1.5 A (1.5 × 10⁻¹⁰ m). If we assume it is a sphere, we can calculate its volume using the following expression.

V = 4/3 × π × r³

V(atom) = 4/3 × π × (1.5 × 10⁻¹⁰ m)³ = 1.4 × 10⁻²⁹ m³

Step 3: Calculate how many atoms are in 1 apple.

V(apple)/V(atom) = 1.8 × 10⁻⁴ m³/1.4 × 10⁻²⁹ m³ = 1.3 × 10²⁵

Help. I need to finish this in time for school tomorrow

Help. I need to finish this in time for school tomorrow

Answers

Hope this helps!

5 - Gas
4 - Weight
1 - Elements
3 - Atoms
7 - Mandeleev
2 - Compounds
6 - Carbon Dioxide
8- IUPAC
Help. I need to finish this in time for school tomorrow

If the heat of combustion for a specific compound is −1160.0 kJ/mol and its molar mass is 86.47 g/mol, how many grams of this compound must you burn to release 541.20 kJ of heat?

Answers

Answer:

40.34 g

Explanation:

First, we divide the heat to release by the heat of combustion to obtain the required moles of compound:

541.20 kJ/(1160.00 kJ/mol) = 0.4665 mol

So, we have to burn approximately 0.47 mol of the compound. We convert the moles to mass in grams by using the molar mass:

mass = molar mass x moles = 86.47 g/mol x 0.4665 mol = 40.34 g

Therefore, you must burn 40.34 grams of the compound to release 541.20 kJ of heat.

. The four metals, Strontium(Sr), Francium (Fr), Yttrium (Y), and Europium (Eu), in separate experiments, are dipped in aqueous solutions of SrNO3, FrNO3, Y(NO3)3, and Eu(NO3)2. The following results are obtained: 1. Yttrium metal does not react with any of the solutions 2. Strontium metal reacts with all of the other metals solutions 3. Francium metal reacts in a solution of Eu(NO3)2 a) List the four oxidizing agents in order from strongest to weakest by creating a small reduction table. Explain your reasoning below b) List the four reducing agents in order from strongest to weakest

Answers

Answer:

a) Y³⁺ > Eu²⁺ > Fr⁺ > Sr²⁺

b) Sr > Fr > Eu > Y

Explanation:

Y is the least reactive metal because it does not react with any of the other solutions.

Sr is the most reactive metal because it reacts with all of the other solutions.  

Sr + 2Fr⁺ ⟶Sr²⁺ + 2Fr

3Sr + 2Y³⁺ ⟶ 2Sr²⁺ + 2Y

Sr + Eu²⁺ ⟶ Sr²⁺ + Eu

Fr is more reactive than Eu because it reacts with Eu(NO₃)₂.

2Fr + Eu²⁺ ⟶ 2Fr⁺ + Eu

The order of reactivity is

Sr > Fr > Eu > Y

b) Reducing agents

In each of the above reactions. the more reactive metal is acting as a reducing agent — it is donating electrons to the cation of the other metal.

Thus, the order of activity of reducing agents is

Sr > Fr > Eu > Y

a) Oxidizing agents

The metal cations are the oxidizing agents.

The order of reactivity of the oxidizing agents is the reverse order of the reducing agents

Y³⁺ > Eu²⁺ > Fr⁺ > Sr²⁺

c) Standard reduction potential table

See the image below.

 

. The four metals, Strontium(Sr), Francium (Fr), Yttrium (Y), and Europium (Eu), in separate experiments,
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escribe una historia de trabajar en equipoporfaaa ayuda PLEASE PLEASE HELP !! The translation below is used on all three triangles.(x, y) (x, y + 1)What happens to the triangles? Which answer would it be A, B, C, or D?(I WILL MARK AS BRAINLIEST! PLEASE HELP!)(A) They all move 1 unit to the right.(B)They all move 1 unit to the left.(C)They all move 1 unit down.(D)They all move 1 unit up. (a) Sketch a basic ionization chamber and label its component parts. (6 marks) (b) A 2 ml volume ionization chamber is placed in a radiation field of 2.58 x 10- C kg s). Calculate the current generated in amperes (pair= 0.0013 g cm-). (c) The energy of 30.0eV is required to ionize a molecule of the gas inside a Geiger tube, thereby producing an ion pair. Suppose a particle of ionizing radiation deposits 0.500 MeV of energy in this Geiger tube. What maximum number of ion pairs can it create? (d) Suppose there are 3 x 107 radon atoms (half life 3.83 days) trapped in a basement. (i) Estimate how many radon atoms remain after 31 days? (ii) Find the activity at the time the basement is sealed? anyone know this, its rlly hard Estimate the product of 3.8 and 11.9 rounding. The distances traveled by car A car Afx x hours. are. represented by the graph and table below. A circular railroad-crossing sign has a diameter of 30 inches.Which measurement is closest to the area of the sign in square inches? QUESTION 23 Which of the following best describes the reaction below. 000 HO*, heat HC NHCH, HC The reaction is incorrect, adding acids to amides forms ketones and amines, not carboxylic acid What evidence exists showing that maternal behavior is mediated by hormones? There are 54 members on the board of directors for a certain non-profit institution. If they must elect a chairperson, first vice chairperson, second vice chairperson, and secretary, how many different slates of candidates are possible? what do you do in your spare time USING GERUND pa help The work function for potassium is 2. 26 ev. Show answer no attempt 50% part (a) what is the cutoff frequency when this metal is used as photoelectrode? give your answer in terahertz Polymers can possess different regions, which are characterized by the degree of order in the polymer chains. Regions of the polymer that are very ordered are called _____ regions, whereas regions of the polymer that are very disordered are called _____ regions. is the result of a proliferation of interlinked social commerce technologies, databases, algorithms, and apps. Statistics question 8A survey is sent out to a sample of voters about an upcoming election via text messaging. Do you think this will produce an unbiased sample? Give your reasons for your answer. what are the benefits of c.a.f.e. for starbucks, and its certified farmers, processors, and suppliers? All living things are composed of at least one or more cells. These cells can be distinguished from each other by the presence or absence of certain features. What features would a scientist use to differentiate between a plant cell and an animal cell? In other words, what features are present in a plant cell, but not present in an animal cell? Sam can't medically come back to work because of his pulmonary issues for a year. He has a short-term group disability policy that requires a 30-day waiting period and a benefit duration of 90 days. He also has a private long-term disability policy that has a 180-day waiting period and a benefit duration of two years. What will be his gaps in coverage, if at all? a. Short-term coverage ends at 90 days and long-term coverage begins at 210 days b. Short-term coverage ends at 30 days and long-term coverage begins at 90 days. c. Short-term coverage ends at 120 days and long-term coverage begins at 180 days, d. Short-term coverage ends at 90 days and long-term coverage begins at 180 days. Help please beggin you for help please What was the name of the people who followed the Spanish explorers to the newworld?