what particles make up an atom?

Connecting a zinc rod to an iron pipe offers advantages in protecting the iron surface from corrosion. The zinc acts as a sacrificial anode, corroding in place of the iron and providing uniform and extended protection to the entire iron pipe.

Connecting a zinc rod to an iron pipe is advantageous to protect the iron (Fe) surface from undergoing corrosion. This process is known as cathodic protection, where the zinc acts as a sacrificial anode. Here's the justification for this answer:

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Answer:

3 atoms

Explanation:

There is 1 atom in Ca and 2 atoms in F (from F2) giving a total of 3 atoms

Answer:

The chemical weathering of feldspar produces clay minerals

Explanation:

clay minerals form in the presence of water.

Answer: The correct option is A. The moon's orbit around Earth

Explanation: Newtons first law of motion says that an object in motion will always remain in motion and an object in erst will always stay at rest untill an external force acts upon it. This law is also called law of inertia which is the property of a body to resist any change in its state of rest or motion. Since moon is also revolving around the earth so it is in motion always and it continues its motion.

Answer:

the moon’s orbit around Earth

Explanation:

First of all, we must know the Avogadro's number:

1 mol of CO2 = 44.0 g (from the molar mass) = 6.02x10^23 molecules of CO2

How must we proceed?

44.0 g CO2 ------------6.02x10^23 molecules CO2

2.59 g CO2 ------------ x

x = 3.54x10^22 molecules CO2

Answer: 3.54x10^22 molecules CO2

The amount of the compound \(XY_2\) that can be generated would be 11.28 grams

From the equation of the reaction, the mole ratio of X and Y is 1:1.

Mole of 3.5 grams of X = 3.4/24 = 0.1417 moles

Mole of 4.2 grams of Y = 4.2/35 = 0.12 moles

Thus, Y is the limiting reactant because it is present in a lower amount than needed.

Mole ratio of Y and  \(XY_2\) = 1:1

Equivalent mole of  \(XY_2\) = 0.12 moles

Molar mass of  \(XY_2\) = 24 + (35x2) = 94 g/mol

Mass of 0.12 moles of  \(XY_2\) = 0.12 x 94 = 11.28 grams

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To dissolve one substance, attractions between solute and solvent particles must be formed, steps involved are:

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The functional group that is formed as the final product of an aldol condensation is an α, β-unsaturated carbonyl compound. This happens through the elimination of water from the aldol product formed during the process of aldol condensation.

An aldol condensation involves the reaction between an aldehyde and a ketone or between two different aldehydes. A new carbon-carbon bond is formed as a result of this reaction.

This product is called the aldol product. A β-hydroxyaldehyde or a β-hydroxyketone are aldol products.

The aldol condensation reaction is triggered by the action of a base like sodium hydroxide or potassium hydroxide on an aldehyde or a ketone, which forms an enolate ion. In an aldol reaction, this enolate ion acts as a nucleophile and attacks the carbonyl carbon of another aldehyde or ketone molecule. It is then protonated to create the aldol product. After that, dehydration or elimination of water takes place, resulting in the α, β-unsaturated carbonyl compound as the final product.

Summary:An α, β-unsaturated carbonyl compound is the final product formed after the elimination of water from the aldol product formed during the process of aldol condensation. The reaction is triggered by the action of a base like sodium hydroxide or potassium hydroxide on an aldehyde or a ketone.

This product is formed as a result of the reaction between an aldehyde and a ketone or between two different aldehydes.

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Answer:

6⋅10−7 m

Wavelength is speed (3×10^8 m/s) divided by frequency (5⋅16×10^14 Hz)

The scale model that would indicate a container large enough to hold 1,000 cubic meters of water if the scale is 1 inch = 1 meter is a model that has a volume of 1,000 cubic inches.

To determine this, we first need to convert cubic meters to cubic inches, as the scale for each model is given in inches.

1 meter = 39.37 inches,

so 1 cubic meter = (39.37 inches)³ = 61,023.7 cubic inches.

Therefore,

1,000 cubic meters = 1,000 x 61,023.7 = 61,023,700 cubic inches

Since the scale is 1 inch = 1 meter, we can use the volume formula for a rectangular prism, which is length x width x height, to determine the volume of the container represented by each model.

For example, if a model has dimensions 10 inches x 10 inches x 10 inches, its volume would be 10 x 10 x 10 = 1,000 cubic inches. We would then need a container that has 61,023,700 / 1,000 = 61,023.7 of these models, or one model that has a volume of 61,023,700 cubic inches.

As a result, if the scale is 1 inch = 1 metre, the scale model that would suggest a container large enough to store 1,000 cubic metres of water has a volume of 61,023,700 cubic inches.

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Answer:

8.92 m/s

Explanation:

Distance covered = 107 m

Time = 12 s

Average speed = ?

The relationship between the parameters is given by;

Average speed = Distance covered / Time

Average speed = 107 / 12

Average speed = 8.92 m/s

Answer: A chemical reaction that stores energy is called an endothermic reaction. More energy might be released as products form than the energy needed to break the reactants apart.

Explanation:

Chemical reaction that involves the storing of energy is Endothermic reaction.

Therefore, energy can be stored in the bonds.

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Answer:

P₂ = 0.13880 atm

Explanation:

Given info are;

Initial volume = 13.0 L

Initial pressure = 3.15 atm

Initial temperature = 213.0 K

Final temperature = 398.0 K

Final volume = 35.0 L

Final pressure = ?

Note;

Base on general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Formula = P₁V₁/T₁ = P₂V₂/T₂  

Solution:

P₂ = P₁V₁ T₂/ T₁ V₂

P₂ = 3.15 atm x 13.0 L x 398.0k/213.0 k x 35.0 L  

P₂ = 1034.8 atm .L.K/ 7455 K.L

P₂ = 0.13880617035

P₂ = 0.13880 atm  

When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.

Thus we will include five significant figures in answer because 1034.8 have five significant figure.

[RevyBreeze]

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Combined Boyle's and Charles' gas law is used here. Therefore the new pressure of gas is 0.13880 atm .

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

Combining Boyle's and Charles' gas law

P₁V₁/T₁ = P₂V₂/T₂

P₂ = P₁V₁ T₂/ T₁ V₂

P₂ = 3.15 atm x 13.0 L x 398.0k/213.0 k x 35.0 L  

P₂ = 1034.8 atm .L.K/ 7455 K.L

P₂ = 0.13880617035

P₂ = 0.13880 atm  

Therefore the new pressure of  gas is 0.13880 atm  when the temperature is changed to 398.0 K  and volume is increased to 35.0 liters.

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Answer:

can you help mine please

How many molecules of chlorine are needed to react with 56.Og of iron to form Iron (III) chloride (FeCl3)?

Answer:0.2496m³/day

Explanation:

The reaction flask contains the mass of 1000.176 g. This calculated using the concept of Mole.

CaCO3 + 2HCl ----->  CaCl2 + CO2 + H2O.

For 1 mole of CaCO3 require 2 moles of HCL to form 1 mole CaCL2 and 1 mole of CO2.

The Molar mass of CaCO3  is 100.0869 g /mole.

The Molar mass of HCL is 36.46 g/mole

The Molar mass of CO2 is 44.01 g/mole.

As 0.21 g of carbon dioxide is given off,

The Moles of CO2 given off =0.21/44.01

The Moles of CO2 given off = 0.00477 moles.

The ratio of Moles of CaCO3 : HCL : CO2 is 1: 2 : 1.

As 0.00477 moles of CO2 is given off, that means 0.00477 moles of CaCO3 and 0.00952 moles of Hydrochloric acid is reacted.

So, the moles = mass of solute /molar mass

For calcium carbonate,

0.00477 moles of calcium carbonate =mass of CaCO3 /100.0869

Mass of CaCO3 becomes 0.477 g

So , 0.477 g of calcium carbonate is reacted to form 0.21 g  of CO2.

The unreacted mass of calcium carbonate =1 - 0.477 = 0.523 g

For, Hydrochloric acid,

Moles = mass of HCL / molar mass of HCL

0.00952 = mass of HCL /36.46

Mass of HCL = 0.347 g.

Mass of Hydrochloric acid reacted = 0.347 g form 0.21 g CO2.

The unreacted mass of hydrochloric acid = 1000 - 0.347

The unreacted mass of HCL= 999.653 g

Total left mass in reaction  flask= unreacted mass of CaCO3 + unreacted mass of Hydrochloric acid

Total left mass in reaction flask is,

                    = 0.523 +999.653

Total left mass in reaction flask is 1000.176 g.

So The reaction flask contains 1000.176 g.

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The balanced redox reaction under acidic conditions is:

MnO₄⁻(aq) + 8H⁺(aq) + 5e⁻ → Mn²⁺(aq) + 4H₂O(l)

The coefficient in front of H₂O is 4.

The oxidation state of Mn in MnO is +7.

In MnO, oxygen is typically assigned an oxidation state of -2. Since there is only one oxygen atom in MnO, the sum of the oxidation states in the compound must be zero. Therefore, the oxidation state of Mn can be calculated as follows:

x + (-2) = 0

x = +2

However, the oxidation state of Mn in MnO is +7, not +2. This indicates that the compound MnO is not the correct formula. The correct formula for manganese(II) oxide is MnO₂.

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Answer: Crystallization is a technique which chemists use to purify solid compounds. Crystals often form in nature when liquids cool and start to harden. Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal. The process is based on the principles of solubility: compounds (solutes) tend to be more soluble in hot liquids (solvents) than they are in cold liquids. If a saturated hot solution is allowed to cool, the solute is no longer soluble in the solvent and forms crystals of pure compound. Impurities are excluded from the growing crystals and the pure solid crystals can be separated from the dissolved impurities by filtration.
For an example the salt we get from seawater can have many impurities in it. Hence, the process of crystallization is in use to remove these impurities.

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As the solution cools, the solvent can no longer hold all of the solute molecules, and they begin to leave the solution and form solid crystals.

During this cooling, each solute molecule in turn approaches a growing crystal and rests on the crystal surface.

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Answer:

Subatomic particles

Explanation:

I hope it helped

The compound that has ionic bonds is KBr (potassium bromide). Therefore the correct option is Option E.

Ionic bonds develop when two atoms with significantly differing electronegativities create a bond in which one atom (the metal) contributes electrons to the other atom (the non-metal). Potassium (K) is a metal in KBr, while bromine (Br) is a nonmetal. The electronegativity of K is low, whereas that of Br is high. When K and Br bond, K contributes its valence electron to Br, resulting in an ionic bond.

The other chemicals listed, on the other hand, have covalent bonding. When atoms with similar electronegativities share electrons in order to produce a more stable electron configuration, covalent bonds occur.

a. H2O has covalent bonds;

b. O2 contains covalent bonds; and

c. Ne is a noble gas that does not create bonds.

d. CO contains covalent bonds.

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Two optical isomers can form:

An equimolar mixture of two optical isomers is called a racemic mixture.

What is a Racemic mixture?

An equimolar mixture of two enantiomers that is optically inactive is known as a racemic mixture (or racemate) (i.e. does not rotate plane-polarized light).

The racemic mixture can be created by:

The light that is plane-polarized does not spin in an optically inactive mixture.

Since each enantiomer rotates plane-polarized light to an equal and opposite extent, an equimolar mixture of two enantiomers will typically result in a racemic mixture. There won't be any net rotation if they are both present in equal proportions.

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Answer:

its B

Explanation:

a p e x

Answer:

the answer is b. allows electricity to flow easily

Answer:

so like Each of the five states of matter collectively made up all the "stuff" that's in the universe- — everything that takes up space and has mass is matter,and All matter is made up of atoms and in turn made up of protons and neutrons and electrons.

Explanation: hope this helps

Sodium Chloride has the strongest dipole moment.

Other names for sodium chloride include salt. Oceans and sea waters are where it happens. There is also rock salt available. NaCl makes about 1% to 5% of seawater. It is a white, crystalline substance. It is known as a saline solution when it is in an aqueous state. This substance, which contains both sodium cation and chloride anion, is water soluble. In a 1:1 ratio, sodium and chloride ions are present. It is frequently referred to as table salt and is mostly utilized in the food sector for flavoring and preservation. Sodium chloride has a pH of 7.

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A passivation layer is a protective layer that forms on the surface of a metal, inhibiting further reaction with the environment. In the given Pourbaix diagram, the passivation layer is typically represented by the stable oxide region (XO) where the metal is in an oxidized state.

Therefore, in the provided options, **XO** could be a passivation layer. It indicates the presence of a stable oxide layer on the surface of the metal X, which acts as a barrier against corrosion. The other regions mentioned, **HXO2−** (hydroxide) and **X2+** (cation), are not typically associated with passivation layers. HXO2− represents a hydroxide species, while X2+ refers to the metal cation, both of which do not form stable protective layers on the metal's surface.

The option **x** is not clear and does not provide information about any specific species or region in the Pourbaix diagram, so it cannot be determined if it could be a passivation layer.

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Transition metals are different than alkali metals and alkaline earth metals because transition metals are more dense but much less reactive as compared to these metals.

As compared to transition metals, alkali, and alkaline earth metals are less dense because these metals of the first two groups are found to have higher atomic volumes. Therefore the transition metals have higher masses than their corresponding alkali metals as well as alkaline earth metals.

In addition to this, compared with the alkali metals in group 1 and the alkaline Earth metals in group 2, the transition metals are found to be much less reactive which is due to their high ionization potential and melting temperature.

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