In a voltaic cell, the ____
electrons and is oxidized, while the______
electrons and is reduced.

Answer:

41.1%

Explanation:

First write the balanced reaction:

CaCO₃ + H₂SO₄ → CaSO₄ + H₂O + CO₂

Now calculate the theoretical yield:

49.3 g CaCO₃ × (1 mol CaCO₃ / 100 g CaCO₃) = 0.493 mol CaCO₃

0.493 mol CaCO₃ × (1 mol H₂O / 1 mol CaCO₃) = 0.493 mol H₂O

0.493 mol H₂O × (18 g H₂O / mol H₂O) = 8.87 g H₂O

Now calculate the % yield:

3.65 g H₂O / 8.87 g H₂O × 100% = 41.1%

Answer:

[tex]\boxed{\text{41.1 \%}}[/tex]

Explanation:

MM: 100.09                                   18.02

       CaCO₃ + H₂SO₄ ⟶ CaSO₄ + H₂O + CO₂

m/g:  49.3                                        3.65  

1. Theoretical yield

(a) Moles of CaCO₃

[tex]\text{Moles of CaCO${_3}$} = \text{49.3 g CaCO${_3}$} \times \dfrac{\text{1 mol CaCO${_3}$}}{\text{100.09 g CaCO${_3}$}} = \text{0.4926 mol CaCO${_3}$}[/tex]

(b) Moles of H₂O

[tex]\text{Moles of H${_2}$O} = \text{0.4926 mol CaCO${_3}$} \times \dfrac{\text{1 mol H${_2}$O}}{\text{1 mol CaCO${_3}$}} = \text{0.4926 mol H${_2}$O}[/tex]

(c) Theoretical mass of H₂O

[tex]\text{Mass of H${_2}$O} = \text{0.4926 mol H${_2}$O} \times \dfrac{\text{18.02 g H$_{2}$O}}{\text{1 mol H${_2}$O}} = \text{8.88 g H${_2}$O}[/tex]

(d) Percent yield

[tex]\text{Percent yield} = \dfrac{\text{ actual yield}}{\text{ theoretical yield}} \times 100 \% = \dfrac{\text{3.65 g}}{\text{8.88 g}} \times 100 \% = \textbf{41.1 \%}\\\\\text{The percent yield is }\boxed{\textbf{41.1 \%}}[/tex]

Answer:

your answer may be found on a website called "Thought.co"

once you get there just search "Examples of Chemical Reactions in Everyday Life" and it will give you some ideas  :)

Answer:

Explanation:

Given parameters:

Number of moles = 12moles

Temperature = 273K

Pressure = 75kPa, convert to atm:

                  1kPa = 0.00986923atm

                   75kPa = 75 x 0.00986923 = 0.74atm

Unknown:

Volume of the oxygen gas

Solution:

We simply apply the idea gas law which is :

                            PV = nRT

  Since the unknown is volume, we make it the subject of the formula:

                             V = [tex]\frac{nRT}{P}[/tex]

R is the gas constant and its value is given as 0.082

           V = [tex]\frac{12 x 0.082 x 273 }{0.74}[/tex] = 363.01L

Final answer:

The melting of polar ice caps is related to global climate change resulting from enhanced greenhouse effect due to elevated atmospheric carbon dioxide levels, which affects weather patterns and increases Earth's temperatures.

Explanation:

The melting of polar ice caps is an example of the interaction between various components of Earth's system, including the atmosphere, hydrosphere, cryosphere, lithosphere, biosphere, and anthrosphere. This process is intricately linked to the concept of global climate change, which encompasses altered global weather patterns, changes in temperature, and shifts in other climatic factors. Such changes are often attributed to rising levels of atmospheric carbon dioxide and other greenhouse gases, which trap heat and contribute to the warming of Earth's surface, known as the greenhouse effect.

As the planet's temperature increases, ice caps and glaciers, such as those in Greenland and Antarctica, melt at an accelerated rate. This melting contributes to global climate change by affecting sea levels, weather patterns, and other ecological phenomena. As such, understanding the changes in Earth's ice caps and their impact is crucial to gauging the full scope of climate change and its implications for modern civilization, including ecosystem dynamics and the potential hazards to human life and infrastructure.

Hey there!:

Molar mass benzene = 78.11 g/mol

find number of moles of benzene :

Moles of benzene =  mass / molar mass of benzene

Moles of benzene =  94.0 / 78.11

Moles of benzene = 1.203 moles

Molar mass camphor =  152.23 g/mol

Moles of camphor = 26.6 / 152.23

Moles of camphor = 0.1747 moles

Therefore , vapor pressure of solution is :

mole fraction of benzene * vapor pressure of solution

= 1.203 / ( 1.203 + 0.1747 ) * 100.0

=  ( 1.230 / 1.3777 ) * 100.0

= 0.8927 * 100.0

=> 89.27 mmHg

Hope this helps !

Answer:

Elements can combine in any proportion to form a compound. -third choice

Answer:

C. Elements can combine in any proportion to form a compound.

Explanation:

Answer:

Difference in temperature

Explanation:

Temperature is the degree of hotness or coldness of a body. The difference in temperature between two bodies enables heat transfer from the hotter body to the colder one. If two bodies are at the same temperature, heat transfer will not occur between them. This why in the vicinity of hot water, a cold water becomes warmer.

Answer:

180.156 g

Glucose has six carbons, twelve hydrogens, and six oxygen atoms. Using the periodic table, the atomic weight of C, H, and O are obtained. So the molar mass of C6H12O6 is 72.06 g + 12.096 g + 96.00 g = 180.156 g or 180.16 g

The molar mass of glucose (C6H12O6) is calculated by summing the molar masses of its constituent atoms, carbon, hydrogen, and oxygen, resulting in a total molar mass of 180.0 g/mol.

The question asks for the molar mass of glucose with the chemical formula C6H12O6. The molar mass of a compound is calculated by summing the molar masses of its constituent atoms. Given the atomic masses of Hydrogen (H) as 1.0 g/mol, Carbon (C) as 12.0 g/mol, and Oxygen (O) as 16.0 g/mol, we calculate the molar mass of glucose as follows:

Adding these values gives a total molar mass of 180.0 g/mol for glucose. This calculation is crucial for understanding how much glucose is needed for chemical reactions and solutions in both laboratory and real-world applications.

Answer: The final pressure inside the tank will be B. 18.05 atm. Gay-Lussac's law is used to predict the changes in pressure or temperature of gases. According to this law, there is a direct relationship between pressure and temperature. As the temperature of gas increases, so, too, will the pressure increase and vice versa.

Further Explanation:

We use the mathematical expression of Gay-Lussac's law to find the final pressure in the tank:

[tex]\frac{P_{initial}}{T_{initial}} \ = \frac{P_{final}}{T_{final}}[/tex]

It is very important to note that when using this equation, all temperatures must be expressed in Kelvin. The conversion from degree Celsius to Kelvin is:

[tex]T \ (in \ K) \ = T \ (in \ deg.\ C) \ +\ 273.15[/tex]

In the problem, we are given the following information:

P(initial) = 23 atm

T(initial) = 293 K

P(final) = ?

T(final) = 230 K

Plugging in these values in the Gay-Lussac Equation, we get:

[tex]\frac{23\ atm}{293 \ K} \ = \ \frac{P_{final}}{230\ K}  \\P_{final} \ = \frac{(23 \ atm) \ (230 \ K)}{293 \ K}\\P_{final} \ = \ 18.05 \ atm[/tex]

The tank was moved from a hotter to a cooler place. At cooler temperatures, gas particles move slower and frequency and strength of their collisions with each other and the wall of the containers decrease. This leads to a decrease in the pressure. Thus, the pressure drops from 23 atm to 18.05 atm when the tank is inside the freezer.

Learn More:

Keyword: Gas Pressure, Temperature, Gay-Lussac's Law

Answer:

B.) 18.05 atm

Explanation:

I got it right on founders edtell

Answer:

They all belong in the same period, thus they have the same energy levels which is 2.

In the periodic table, elements are categorized by group and period. Periods are arranged in rows. Below is a picture of the periodic table and where these elements are.

As you can see, they all belong in the same period (row). Elements in the same period have the same number of atomic orbitals, or in other words, they have the same electron energy level. The period number tells you the energy level. Lithium (Li), Carbon (C), and Fluorine (F) are in period 2, so they all have two energy levels.

Answer:

Answer choice A.

Explanation:

Li has an atomic mass of 6.941. F has an atomic mass of 18.998. Combine these to get 25.939 amu/grams. Take the 110 and divide it by 25.939 to get about 4.2. Hope this helps :)

One equation for the number of moles  in a compound:

[tex]number.of.moles = \frac{mass}{mr}[/tex]

(note: Mr is the combined molecular mass of the compound.)

__________________________________

On the periodic table:

Lithium (Li) has a molecular mass of around 7

Fluorine (F) has a molecular mass of around 19.

-------------------------------

So the total Mr of Lithium Fluoride (LiF) is:

7 + 19 = 26

________________________________________

Now to work out the number of moles, we just divide the mass (in grams) of the compound by the Mr of the compound (as in the formula):

[tex]number.of.moles = \frac{mass}{mr}[/tex]

[tex]number.of.moles = \frac{110}{26}[/tex]

[tex]number.of.moles = 4.2[/tex]

_______________________________

Answer:

A) 4.2

e.18 mol S. In the given chemical reaction, 3 moles of sulfur is needed to produce one mole of aluminum sulfide. Therefore, to produce 6 moles of aluminum sulfide, 18 moles of sulfur are needed.

In the given chemical reaction, aluminum (Al) reacts with sulfur (S) to produce aluminum sulfide (Al2S3). The mole ratio of aluminum to sulfur to aluminum sulfide in this reaction is 2:3:1. This means that for every one mole of aluminum sulfide produced, three moles of sulfur are required.

So, calculating for six moles of aluminum sulfide, we multiply the required moles of sulfur for one mole of aluminum sulfide (which is three) by the six moles: 3 * 6 = 18. Hence, to produce 6 moles of aluminum sulfide, 18 moles of sulfur are needed.

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In the reaction 2 Al (s) + 3 S (s) → Al2S3 (s), three moles of sulfur are needed to produce one mole of aluminum sulfide. Therefore, to produce 6 moles of aluminum sulfide, you would need 18 moles of sulfur.

In the given reaction, 2 Al (s) + 3 S (s) → Al2S3 (s), we see that three moles of sulfur (3 S) are needed to produce one mole of aluminum sulfide (Al2S3). So, to find out how many moles of sulfur are needed to produce 6 moles of aluminum sulfide, we can perform a simple multiplication: 3 sulfur moles/mole of aluminum sulfide * 6 moles of aluminum sulfide = 18 moles of sulfur. Hence, the correct answer is (e) 18 mol S.

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Answer:

çok güzel olmuş teşekkürler hocam yorumu siz yapabilirsiniz ve bana göre bu ne biçim ve doğru olarak verilmiştir denildi bu kadar güzel ve yeni bölümleri ile birlikte eğlenelim bu arada yay ve doğru bir karar aldık ve doğru şekilde

Answer:

eon ,era ,period ,epoch.

Answer:

Explanation:

Given parameters:

Volume of gas at STP = 6.8L or 6.8dm³

Condition: Standard Temperature and Pressure

Solution:

For gases at standard temperature and pressure,

                number of moles = [tex]\frac{volume of occupied}{22.4}[/tex]

     number of moles = [tex]\frac{6.8}{22.4}[/tex] = 0.3moles

Answer:

16.0 g; 3.1 mol

Explanation:

(a) Mass of O atoms

Mass = 6.022 × 10^23 atoms × (2.66 × 10^-23 g/1 atom) = 16.0 g

(b) Moles of O atoms

0.050 kg = 50 g

Moles = 50 g × (1 mol/16.0 g) = 3.1 mol

Answer : The mass of 1 mole of oxygen atoms is, 16.0 grams

The moles of oxygen atoms is, 3.1 moles

Explanation :

First we have to calculate the mass of 1 mole of oxygen atoms.

Given : Mass of 1 oxygen atom = [tex]2.66\times 10^{-23}g[/tex]

As, 1 atom of oxygen has mass = [tex]2.66\times 10^{-23}g[/tex]

So, [tex]6.022\times 10^{23}[/tex] atom of oxygen has mass = [tex](6.022\times 10^{23})\times (2.66\times 10^{-23})=16.0g[/tex]

Thus, the mass of 1 mole of oxygen atoms is, 16.0 g

Now we have to calculate the moles of oxygen atoms.

As per question, the mass of oxygen atoms = mass of a glass of water = 0.050 kg = 50 g

Formula used :

[tex]\text{Moles of oxygen atoms}=\frac{\text{Mass of oxygen atoms}}{\text{Molar mass of oxygen atoms}}[/tex]

Molar mass of oxygen atom = 16 g/mole

[tex]\text{Moles of oxygen atoms}=\frac{50g}{16g/mole}=3.1mole[/tex]

Therefore, the moles of oxygen atoms is, 3.1 moles

Answer:

Explanation:

1) Convert the mass of water into number of moles

        n = 255 g / 18.015 g/mol = 14.15 mol

2) Use the formula E = n × ΔH vap

This is, you have to multiply the molar ΔH vaporization by the number of moles to find the total energy to boil the given amount of water.

3) Round to the correct number of significant figures.

The mass of water is the measurement with the least number of significant figures (3), so you must report the answer with 3 significant figures,

Answer:

Explanation:

You can calculate the normality of an acid by multiplying the molarity by the number of acid hydrogens. So, the normality for H₂SO₄ is its molarity multiplied by 2.

For bases, the normality is the product of the molarity and the number of OH⁻ ions. So, for NaOH the normality is its same molarity.

Also remember the definitions and formulae:

The chemical equation for the reaction of H₂SO₄ with NaOH is:

As you see, the mole ratio is 1 mol H₂SO₄ : 2 mol NaOH meaning that every mol of H₂SO₄ neutralizes 2 moles of NaOH.

Since both reactants have the same molarity (decimolar = 0.1M) and the same volume, there are the same number of moles of each, but they have different normalities, which means different number of equivalents.

At the same molarity, the number of equivalents of H₂SO₄ is double than the number of equivalents of NaOH.

Then, after reaction half the number of equivalents of H₂SO₄ will remain in solution. The calculations are:

        Number of moles of each compound before reacting:

        H₂SO₄: 0.050 liter × 0.1 M = 0.005 mol

        NaOH: 0.050 liter × 0.1 M = 0.005 mol

Since ther reaction is 1 mol acid : 2 moles  base, the base is the limiting reactant (it will be fully consumed).

Only 0.005 / 2 mol of acid will react and 0.005 / 2 mol will remain in solution. That is 0.0025 mol.

The volume of the solution will be 50 ml + 50 ml = 100 ml = 0.10 liter

So, after reaction you have:

.

The question is incomplete but the full question may be found in other sources.

This is the complete question:

        a. FeCl₃, reducing agent; Fe, oxidizing agent.

        b. Cl₂, oxidising agent; Fe reducing agent.

        c. Fe, reducing agent; FeCl₃, oxidizing agent.

        d. FeCl₃, oxidizing agent, Cl₂, reducing agent.

Answer:

Explanation:

It is easy to recognize by simple inspection that the given reaction is a redox one (oxidation - reduction) because the substances in the reactant side are pure elements (whose oxidation state is always zero) and the substance in the product side is a compound formed by the two reactant elements (which means that now they have a different oxidation state).

In a redox reaction, the element that increases its oxidation number loses electrons and reduces other element, so this is the reducing agent. On the other hand, the element whose oxidation number is decreased has gained electrons, a so it is the oxidizing agent (it oxidizes other element).

I will show the oxidation states of each species in the chemical reaction, using superscripts:

Thus:

Answer:

Double displacement reaction

Explanation:

Lithium bromide and lead nitrate would react in a double displacement reaction. Both compounds are solution and would dissociate completely.

In this type of reaction, there is an exchange of ions to form new ones:

         2LiBr + Pb(NO₃)₂ → 2LiNO₃ + PbBr₂

The reaction produces a precipiate in form of the lead bromide that is formed. The lithium nitrate is deliquescent and it remains as solution when it forms.

Answer:

pH range =  2.74-4.74

Explanation:

The pH range of a buffer falls in between one unit on either side of pKa.

The given weak acid is HF and its Ka = 1.8X10⁻⁴

pKa = -log(Ka)

pKa = -log(1.8X10⁻⁴)

pKa = 3.74

The pH range is 3.74-1 = 2.74 to 3.74+1 =4.74

pH range =  2.74-4.74

Answer:

Explanation:

(NH4)3 PO4 +NaOH arrow Na3PO4 +3NH3 +3H2O

Start by seeing what happens with the Na. You need 3 on the left, so put a 3 in front of NaOH

(NH4)3 PO4 +3NaOH arrow Na3PO4 +3NH3 +3H2O  Next work with the nitrogens. YOu have 3 on the left and 3 on the right, so they are OK. Next Go to the stray oxygens.

You have 3 on left in (NaOH) and three on the right in 3H2O so they are fine as well. The last thing you should look at are hydrogens.

There are 12 + 3 on the left which is 15. There are 9 (in 3NH3) and 6 more in the water. They seem fine.

Why didn't I do something with the PO4^(-3)? The reason is a deliberately stayed away from them and balanced everything else. Since they were untouched with 1 on the left and 1 on the right, they are balanced.

Species      Na        H        O         N       PO4

Left             3          15        3         3          1

Right           3         15         3         3          1

Answer:

(NH₄)₃PO₄ + 3NaOH ⟶ Na₃PO₄ + 3NH₃ + 3H₂O

Explanation:

Your unbalanced equation is

(NH₄)₃PO₄ + NaOH ⟶ Na₃PO₄ + NH₃ + H₂O

A method that usually works for balancing by inspection is

1. Pick the most complicated-looking formula [(NH₄)₃PO₄].

Put a 1 in front of it.

1(NH₄)₃PO₄ + NaOH ⟶ Na₃PO₄ + NH₃ + H₂O

2. Balance N.

We have fixed 3N on the left. We need 3N on the right.

Put a 3 in front of NH₃.

1(NH₄)₃PO₄ + NaOH ⟶ Na₃PO₄ + 3NH₃ + H₂O

3. Balance P.

We have fixed 1P on the left. We need 1P on the right.

Put a 1 in front of Na₃PO₄.

1(NH₄)₃PO₄ + NaOH ⟶ 1Na₃PO₄ + 3NH₃ + H₂O

4. Balance Na

We have fixed 3Na on the right. we need 3Na on the left.

Put a 3 in front of NaOH.

1(NH₄)₃PO₄ + 3NaOH ⟶ 1Na₃PO₄ + 3NH₃ + H₂O

5. Balance O.

We have fixed 7O on the left and 4O on the right. We need three more O atoms on the right.

Put a 3 in front of H₂O.

1(NH₄)₃PO₄ + 3NaOH ⟶ 1Na₃PO₄ + 3NH₃ + 3H₂O

All species have a coefficient. The equation should now be balanced.

6. Check that all atoms are balanced

[tex]\begin{array}{ccc}\textbf{Atom} & \textbf{On the left} & \textbf{On the right}\\\text{N} & 3 & 3\\\text{H} & 15 & 15\\\text{P} & 1 & 1\\\text{O} & 7 & 7\\\text{Na} & 3 & 3\\\end{array}[/tex]

The balanced equation is

(NH₄)₃PO₄ + 3NaOH ⟶ Na₃PO₄ + 3NH₃ + 3H₂O

Answer:

The correct answer option is: the same as.

Explanation:

At equilibrium, the rate of production of reactants is the same as the rate of production of products.

When at equilibrium, the forward rate of the production of products is exactly the same or say equal to the reverse production of the reactants. As they would not go forward and then stop because the reactions are dynamic.

Therefore, the correct answer option is the same as.

Answer:

At equilibrium, the rate of production of reactants is the same as the rate of production of products.

Explanation:

Chemical equilibrium is the state of a system where no changes are observed in the concentration of reagents or products, over time, that is, they remain constant.

The chemical equilibrium happens in reversible reactions, that is, reactions that can occur in both directions; that is, not only can reagents be converted into products, but the latter can be decomposed into the original substances.

In the chemical equilibrium, both speeds, that of the direct reaction and that of the reverse reaction, are equal. The products are formed at the same speed as they are consumed, so they do not experience variation in their concentration. If the external conditions of the system ( as pressure and temperature) remain unchanged, the concentrations of reagents and products will remain constant.

So, at equilibrium, the rate of production of reactants is the same as the rate of production of products.

Answer:

It would have to be C: the first species to populate an uninhabited area

Explanation:

The meaning of Pioneer species is: the first species to populate an uninhabited area

A pioneer species is the first species to populate an uninhabited area. Therefore, the correct option is option C.

A species is indeed the basic unit of categorization and taxonomic ranking of an organism, in addition to a unit of biodiversity, in biology. A species is frequently described as the biggest group of creatures that includes any two persons of the right sexes or mating types may create viable offspring, most commonly by sexual reproduction.

Species can also be defined by their karyotype, Chromosomal dna, appearance, behavior, or ecological niche. Moreover, because fossil reproduction can indeed be studied, paleontologists employ the idea of chrono species.  A pioneer species is the first species to populate an uninhabited area.

Therefore, the correct option is option C.

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Physical properties, such as density and color, can be observed without changing the substance's composition, while chemical properties, like flammability, involve changing the substance's chemical structure through reactions.

Physical and chemical properties are two fundamental ways to describe matter, each highlighting different aspects of the substances around us. Physical properties include characteristics that can be observed or measured without changing the substance's chemical composition. Examples of physical properties are density, color, hardness, melting and boiling points, and electrical conductivity. Observing these properties doesn't alter the identity of the material. For instance, measuring the melting point of ice or observing the color of copper involves no chemical alteration of the substance.

On the other hand, chemical properties involve how a substance interacts with other substances to form new materials, revealing its behavior in chemical reactions. Traits like flammability and the ability to corrode are examples of chemical properties because observing them involves changing the substance’s chemical structure. When a piece of wood burns, transforming into ash and smoke, it undergoes a chemical change that alters its identity, showcasing its flammability — a key chemical property.

Answer:

1.uv light not required

The condition that is not required for the formation of ammonia using nitrogen and hydrogen is UV light. Instead, high temperature, high pressure, and an iron catalyst are used in the process.

The reaction of nitrogen with hydrogen to form ammonia gas, also known as the Haber process, typically involves high temperature, high pressure, and the use of an iron catalyst. This reaction process includes a high-pressure condition (~150-250 atm), to favor ammonia production. It also needs a temperature of around 400-500 °C, although lower temperature favors the exothermic reaction, a compromise is reached to achieve a reasonable reaction rate. The iron catalyst is used to accelerate the reaction.

However, the one condition that is not required for the formation of ammonia from nitrogen and hydrogen is the exposure to ultraviolet (UV) light. UV light is not needed to trigger or maintain the reaction, rather the combination of pressure, heat, and the catalyst does the job. Therefore, among the given options, UV light is not necessary for the production of ammonia in the Haber process.

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Answer:

BF₃; boron trifluoride

Explanation:

The molecular formula of the compound would be BF₃

The atoms making up the compound consists of B and F.

In covalent bonds, electrons are shared between atoms for the bonds to form. Boron has 3 valence electrons and would freely share with other atoms for it to have a stable configuration. Fluorine requires just one electron to have a stable configuration. Three fluorine atoms would make the bonding work.

This leaves us with a BF₃ compound

Chemical name is Boron trifluoride(3 atoms of fluorine)

Answer:

D. 4120 g/dm3

Explanation:

Given:

Mass of Zn = 618 g

Mass of water = 150 cm3

To determine:

Solubility of the given amount of Zn in water

Calculation:

Solubility is the amount of a substance that can be dissolved in a given volume.

Unit conversion:

1 cm3 = 0.001 dm3

Therefore, 150 cm3 of water is equivalent to:

[tex]\frac{150 cm3*0.001dm3}{1cm3}=0.15dm3[/tex]

[tex]Solubility = \frac{618g}{0.15dm3}=4120g/dm3[/tex]

The solubility of 618 grams of Zinc chloride (ZnCl2) dissolved into 150 cm³ of water is 4120g/dm³.

We are given;

Solubility in g/dm³ we;

= 412 g ÷ 0.1 dm³

= 4120 g/dm³

Keywords: Solubility, solubility calculation, solubility in g/100g.

Learn more about:

Level: High school

Subject: Chemistry

Topic: Solubility

Sub-topic:  solubility of substances in water

Answer:

The egg is changed from liquid to solid

Explanation:

The law of conservation of mass states that "Matter/mass can neither be created nor destroyed but can be converted from one form to another".

Inside of the Egg is liquid in nature and during the process of cooking the egg the liquid changes to solid.

THAT IS HOW MATTER IS CONSERVED WHILE COOKING AN EGG

The mass is conserved when cooking an egg because no mass is lost or gained during the process.

When cooking an egg, the mass is conserved because no mass is lost or gained during the process. The egg goes through a physical and chemical change, but the total mass remains the same. For example, when boiling an egg, the water in the pot evaporates but becomes part of the surrounding gas in the air, so no mass is lost. Additionally, the proteins in the egg denature and solidify, but their mass remains the same.

The conservation of mass principle, also known as the law of conservation of mass, is a cornerstone of chemistry. It is derived from the understanding that atoms are neither created nor destroyed in chemical reactions; they are merely rearranged into different combinations. This means that the total mass of substances involved in a chemical reaction remains constant before and after the reaction.

In the context of cooking an egg, this principle holds true. While physical and chemical changes occur during the cooking process, the total mass of the egg, including its components such as water, proteins, fats, and minerals, remains unchanged. Even though water evaporates from the egg during cooking, the total mass of the system (egg + surroundings) remains constant.

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Answer: 6 x 4 = 24

24 + 8 = 32

The unknown number multiplying 6 is 4. We know this because if we subtract 8 from 32 we get 24, the sum of 6 x 4.