Undigested food leaves the body through the...


A small intestine
B rectum
C Oliver
D pancreas

Answer:

75.0%

Explanation:

Data obtained from the question. This includes the following:

Actual yield = 6.13g

Theoretical yield = 8.17g

Percentage yield =...?

The percentage yield can be obtain by using the following formula:

Percentage yield = Actual yield /Theoretical yield x 100

Percentage yield = 6.13/8.17 x 100

Percentage yield = 75.0%

Therefore, the percentage yield of water from the reaction above is 75.0%

Answer:

the answer is C. this is because 6 times 3 is 18

The equation C2H4(g) + H2(g) + C2H6(g) → Caco3(s) + Cao(s) + CO2(g) shows an increase in entropy due to the formation of a gas as a product. Option A

In this equation, the reactants on the left-hand side consist of gases (C2H4 and H2), while the products on the right-hand side include a solid (Caco3) and a gas (CO2).

When a reaction involves a change from gaseous to solid or liquid states, there is typically a decrease in entropy because the particles become more ordered and constrained in the solid or liquid phase.

Conversely, when a reaction involves the formation of gases, there is generally an increase in entropy because gases have higher degrees of molecular motion and greater freedom of movement compared to solids or liquids.

In the given equation, the reactants include three gaseous compounds (C2H4, H2, and C2H6), and one of the products is a gas (CO2). Therefore, the overall entropy of the system increases during this reaction.

The equation Fe(s) + S(s) → FeS(s) does not show an increase in entropy. Both the reactants (Fe and S) and the product (FeS) are solids. Since solids have lower entropy compared to gases or liquids, the entropy of the system does not increase in this reaction. Option A

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Answer:

I apologize that I'm late and all But your answer is B. Energy Transfer.

Explanation:

The waves transfer energy to the sand for example.

Answer:

Which set of orbitals are degenerate?

Degenerate is used in quantum mechanics to mean 'of equal energy. ' It usually refers to electron energy levels or sublevels. For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy, as shown in the diagram.

Explanation:

Answer:

Electron orbitals having the same energy levels are called degenerate orbitals, For example, orbitals in the 2p sublevel are degenerate - in other words the 2px, 2py, and 2pz orbitals are equal in energy.

Steel is produced from pig iron through a process known as steelmaking or iron and steel production.

The pig iron obtained from the blast furnace contains high amounts of carbon, impurities, and other elements. To convert pig iron into steel, the carbon content needs to be reduced to desired levels, and impurities must be removed.One common method of steelmaking is the basic oxygen process (BOP). In this process, pig iron is placed in a vessel called a converter, where oxygen is blown through the molten metal. The oxygen reacts with the carbon and impurities, causing them to oxidize and form gases that are released. Alloying elements and desired additives can be added at this stage to achieve specific steel properties. Another method is the electric arc furnace (EAF), where an electric arc is used to heat and melt the pig iron, allowing impurities to be oxidized and removed.The advantages of using steel are numerous. Steel is strong, durable, and versatile, making it suitable for a wide range of applications. It has high tensile strength, which means it can withstand heavy loads and pressures. Steel is also resistant to corrosion, making it ideal for construction, infrastructure, and transportation projects. It is a recyclable material, contributing to sustainability and reducing environmental impact. Additionally, steel can be fabricated into various shapes and sizes, allowing for customization and flexibility in design.References:

A. Ghosh and A. Chatterjee, Ironmaking and Steelmaking: Theory and Practice, PHI Learning, 2008.

R.H. Tupkary and V.R. Tupkary, An Introduction to Modern Iron Making, Khanna Publishers, 2010.

J.R. Davis, ed., ASM Specialty Handbook: Carbon and Alloy Steels, ASM International, 1995.

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Answer:

Afom of noble gases can exists independently and form monoatomic molecules like helium neon argon etc so these are monoatomic molecules not compound

Explanation:

If a certain piece of metal is cooled it will conduct current better is a hypothesis.

When a conductor is connected to a fluctuating magnetic flux, it induces closed loops of electric currents known as eddy currents. They create closed circuits in a plane perpendicular to the magnetic field and are subject to Faraday's law of electromagnetic induction. These currents will flow in a direction that opposes the shift required by the Lenz law.

Eddy currents are created when a conductor is traveling through a magnetic field or when the magnetic field around a conductor at rest changes over time. They arise from variations in the strength and direction of a conductor-linked magnetic field or magnetic flux.

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Answer:

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

Explanation:

According to Brönsted-Lowry acid-base theory, an acid is a substance that donates H⁺. Let's consider the molecular equation showing that benzoic acid is a Brönsted-Lowry acid.

C₆H₅COOH(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The complete ionic equation includes all the ions and molecular species.

C₆H₅COO⁻(aq) + H⁺(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The net ionic equation includes only the ions that participate in the reaction and the molecular species.

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

Answer:

Geothermal is heat from the ground to make electricity, solar is from the sun to make electricity

Explanation:

Answer:

1.61

Explanation:

The pH of the solution, which is set at 3, depends on the kinds and amounts of glycine present in the solution as well as the pka of the NH2 group, which ranges from 9 to 78. pH = equivalent = 9.78, thus

What is glycerine's advantage?

Glycerine, an amino acid, provides a wide range of incredible health benefits. Your body needs glycerine to make essential compounds including glutathione, creating, and collagen. This amino acid may also protect your liver from the negative effects of alcohol while improving your heart health and sleep.

who shouldn't consume glycerin?

A single amino acid should not be consumed in large amounts over a lengthy period of time. Avoid consuming isolated amino acids in large amounts without first talking to a doctor. Glycine supplements shouldn't be taken by women who are pregnant or breastfeeding.

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5.57  is the pH of the buffer .

What is buffer ?

Buffer, in chemistry, usually a solution containing acids and bases or salts that tends to maintain a constant concentration of hydrogen ions. An ion is an atom or molecule that has lost or gained one or more electrons. A common buffer is a solution of acetic acid (CH3COOH) and sodium acetate. In aqueous solution, sodium acetate completely dissociates into sodium (Na+) and acetate (CH3COO-) ions. Buffer solutions with different hydrogen ion concentrations can be prepared by varying the buffer ratio and choosing acids of appropriate intrinsic strength. Commonly used buffers include phosphate, citrate, or borate and their salts

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The ΔS° value for the reaction KCl(s) → K+(aq) + Cl−(aq) is ΔS° > 0, as the products have a higher degree of disorder than the reactant due to an increase in the number of particles in solution. Hence the correct option is (C) ΔS° > 0.

The ΔS° value for a reaction represents the change in the entropy of the system, which is a measure of the disorder or randomness of the system. The reaction KCl(s) → K+(aq) + Cl−(aq) involves a solid compound breaking down into two separate aqueous ions, which means that the products have a higher degree of disorder than the reactant. This increase in the number of particles in solution results in an increase in entropy, which means that ΔS° > 0. Option (A) is incorrect because the reaction involves a change in state, which results in an increase in entropy. Option (B) is incorrect because it represents the relationship between enthalpy and entropy, not the ΔS° value for this particular reaction. Option (D) is incorrect because the reaction results in an increase in entropy, not a decrease. Option (E) is incorrect because the given information is sufficient to predict the sign of ΔS°.

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4.41 × 10⁻⁴⁵m is the wavelength of the photon and the energy correspond to red color.

The term wavelength is defined as the distance between two identical points that are adjacent crests and troughs.

The SI unit of wavelength is metre mostly represented as m.

The wavelength is mostly represented by λ is the Greek letter lambda.

Given:

E =  4.50x10⁻¹⁹ J/photon

h = Planck constant = 6.626 × 10⁻³⁴

ν = ?

E = hν

ν = E/h

By substituting the values in above question and we get,

= 4.50x10^-19 /  6.626 × 10⁻³⁴

=  0.679 × 10⁻¹⁵

c = 3 × 10⁸

E = hc/λ

λ = hc/E

By substituting the values in above question and we get,

λ = 6.626 × 10⁻³⁴ ×  3 × 10⁸ / 4.50x10⁻¹⁹

λ = 4.41 × 10⁻⁴⁵m

Thus, the wavelength of the photon is 4.41 × 10⁻⁴⁵m and color does this energy correspond to red.

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Answer:0.802atm

Explanation:

To convert pressure from millimeters of mercury (mmHg) to atmospheres (atm), you can use the conversion factor:

1 atm = 760 mmHg

So, to convert the pressure of the light bulb from mmHg to atm, divide the given pressure by 760:

Pressure (in atm) = 610 mmHg / 760 mmHg

Pressure (in atm) ≈ 0.802 atm

Therefore, the pressure inside the light bulb is approximately 0.802 atmosphe

Title: The First Amendment: Safeguarding Fundamental Freedoms

While all amendments are crucial, the First Amendment holds unparalleled significance in upholding the principles of liberty, equality, and democracy.

The First Amendment to the U.S. Constitution is undoubtedly the most important amendment as it safeguards fundamental freedoms that form the bedrock of a democratic society.

This amendment, which encompasses the rights of freedom of speech, religion, press, assembly, and petition, plays a vital role in protecting individual liberties and ensuring a just and inclusive society. There are three key reasons why the First Amendment stands out as the cornerstone of our democracy.

Firstly, freedom of speech allows citizens to express their ideas, opinions, and criticisms, fostering a robust marketplace of ideas essential for progress and social change. This right empowers individuals to challenge authority, hold public officials accountable, and engage in meaningful dialogue that drives societal progress.

Secondly, freedom of religion guarantees individuals the right to practice their faith without interference from the state. This principle promotes religious tolerance, diversity, and pluralism, creating a society where individuals can freely worship and live in accordance with their beliefs.

Lastly, freedom of the press ensures an informed citizenry by safeguarding independent journalism. A free press acts as a check on governmental power, exposes corruption, and provides essential information necessary for a functioning democracy.

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Answer:

The change of energy form one form to another result in chemical reaction!

Answer:

Cesium

Explanation:

Cesium is second from the bottom of this group, has 6 shells of electrons, and it matches the features of a reactive atom, making it the most reactive element.

Answer:

two unpaired electrons

Explanation:

each of which are located in a different pi* antibounding orbital.

The mass of NaCN that produces 9.90 g of HCN would be

\($9.90 \mathrm{gHCN} \cdot \frac{1 \mathrm{molHCN}}{27.03 \mathrm{gHCN}} \cdot \frac{2 \mathrm{molNaCN}}{2 \mathrm{molHCN}} \cdot \frac{49.01 \mathrm{gNaCN}}{1 \mathrm{molNaCN}}=18.0 g \mathrm{~g} a C N$\)

HCN, or hydrogen cyanide, is a dangerous gas. For inhalation, the fatal dose is roughly 300 mg HCN per kg of air. Air has a density of 1.18 kg/m³ at 26 °C.

Take into account how HCN is created when NaCN (sodium cyanide) reacts with an acid like H₂SO₄ (sulfuric acid):

2 NaCN(s) + H₂SO₄(aq) → Na₂SO₄(aq) + 2 HCN(g)

The density of air exists 1.18 kg/m³. The mass referred by 28 m³ be:

28.0 m³ × (1.18 kg/m³) = 33.0 kg

A dose of 300 mg HCN per kilogramme of air is considered fatal. In 33.0 kg of air, the fatal concentration of HCN is:

33.0 kg air × (300 mg HCN / 1 kg air) = 9900 mg HCN = 9.90 g HCN

From the balanced equation, we get,

Molar mass of HCN exists 27.03 g/mol.

Molar ratio of HCN to NaCN exists 2 : 2.

Molar mass of NaCN exists 49.01 g/mol.

Mass of NaCN that produces 9.90 g of HCN exists:

\($9.90 \mathrm{gHCN} \cdot \frac{1 \mathrm{molHCN}}{27.03 \mathrm{gHCN}} \cdot \frac{2 \mathrm{molNaCN}}{2 \mathrm{molHCN}} \cdot \frac{49.01 \mathrm{gNaCN}}{1 \mathrm{molNaCN}}=18.0 g \mathrm{~g} a C N$\).

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The root mean square velocity of CH₄ at -23.0 °C is 520.1 m/s, rounded to one decimal place.

What is square velocity?

Root mean square velocity is a measure of the average speed of particles in a gas. It is defined as the square root of the average of the squares of the individual particle velocities. In other words, it is the square root of the sum of the squares of the velocities of all the gas particles divided by the total number of particles.

The root mean square velocity (urms) of a gas is given by the following equation:

urms = √((3RT) / M)

where R is the gas constant, T is the temperature in kelvin, and M is the molar mass of the gas.

First, we need to convert the temperature from Celsius to Kelvin:

T = -23.0 + 273.15 = 250.15 K

The molar mass of CH₄ is 16.04 g/mol.

M = 16.04 g/mol

We also need the gas constant R in SI units. The value of R is 8.314 J/(mol K).

Substituting the values into the equation, we get:

urms = √((3 x 8.314 J/(mol K) x 250.15 K) / (16.04 g/mol))

        = 520.1 m/s

Therefore, the root mean square velocity of CH₄ at -23.0 °C is 520.1 m/s, rounded to one decimal place.

The root mean square velocity is proportional to the square root of the temperature and inversely proportional to the square root of the molar mass of the gas. This means that at a given temperature, lighter gases will have higher root mean square velocities than heavier gases.

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Answer:

Ti

Explanation:

We have that  he element X is

X= Titanium

From the question we are told that

XCl4 contains 74.8% Cl by mass

Hence for a 100g

Cl=74.8g

Mole of Cl=\frac{74.8}{35.5}

Mole of Cl=2.1

Meanin that 4 M of Cl=1 M of X

Generally the equation for the moles   is mathematically given as

moles = \frac{mass}{ molar mass}

Where

mass of X=100-74,8=25.3

and

moles of X=\frac{2.1}{4}

moles of X=0.527

0.527= \frac{25.2}{ molar mass}

molar mass=47.8g

Therefore

Element with molar mass=47.8g is Titanium

Hence

X= Titanium

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Answer:

Answer: D

Explanation: crest to crest to the crust to crust to the west to west.

Answer: The mass of product, \(H_2O\) is, 36.0 grams.

Explanation : Given,

Mass of \(H_2\) = 4.0 g

Mass of \(O_2\) = 32.0 g

Molar mass of \(H_2\) = 2 g/mol

Molar mass of \(O_2\) = 32 g/mol

First we have to calculate the moles of \(H_2\) and \(O_2\).

\(\text{Moles of }H_2=\frac{\text{Given mass }H_2}{\text{Molar mass }H_2}\)

\(\text{Moles of }H_2=\frac{4.0g}{2g/mol}=2.0mol\)

and,

\(\text{Moles of }O_2=\frac{\text{Given mass }O_2}{\text{Molar mass }O_2}\)

\(\text{Moles of }O_2=\frac{32.0g}{32g/mol}=1.0mol\)

Now we have to calculate the limiting and excess reagent.

The balanced chemical equation is:

\(2H_2+O_2\rightarrow 2H_2O\)

From the balanced reaction we conclude that

2 mole of \(H_2\) react with 1 mole of \(O_2\)

From this we conclude that, there is no limiting and excess reagent.

Now we have to calculate the moles of \(H_2O\)

From the reaction, we conclude that

2 moles of \(H_2\) react to give 2 moles of \(H_2O\)

Now we have to calculate the mass of \(H_2O\)

\(\text{ Mass of }H_2O=\text{ Moles of }H_2O\times \text{ Molar mass of }H_2O\)

Molar mass of \(H_2O\) = 18 g/mole

\(\text{ Mass of }H_2O=(2.0moles)\times (18g/mole)=36.0g\)

Therefore, the mass of product, \(H_2O\) is, 36.0 grams.

Ai. The car's initial kinetic energy is 22657.94 J

Aii. The car's initial potential energy is 939960.1 J

B. The car's final kinetic energy is 171420.38 J

C. The car's change in kinetic energy is 148762.44 J

Ai. How do I determine the car's initial kinetic energy?

We can obtain the initial kinetic energy of the car as illustrated below:

KE₁ = ½mu²

KE₁ = ½ × 566.99 × 8.94²

KE₁ = 22657.94 J

Aii. How do I determine the car's initial potential energy?

The car's initial potential energy can be obtained as shown below:

PE₁ = mgh

PE₁ = 566.99 × 9.8 × 169.164

PE₁ = 939960.1 J

B. How do I determine the car's final kinetic energy?

The final kinetic energy of the car can be obtained as illustrated below:

KE₂ = ½mv²

KE₂ = ½ × 566.99 × 24.59²

KE₂ = 171420.38 J

C. How do I determine the car's change in kinetic energy?

The change in the kinetic energy of the car can be obtained as follow:

ΔKE = KE₂ - KE₁

ΔKE = 171420.38 - 22657.94

ΔKE = 148762.44 J

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Explanation:

It is the emission of electron from a metal under the effect of light is known as photo electric effect

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