Although chemical digestion occurs throughout the digestive system, it mostly occurs in the A esophagus and stomach
B
liver and gall bladder
C
liver and pancreas
D
stomach and intestines

The final pressure in the flask after carbon monoxide at a pressure of 890 mmHg reacts completely with O₂ at a pressure of 445mmHg in a sealed vessel to produce CO₂ is 890 mmHg.

To find the final pressure in the flask after carbon monoxide (CO) reacts with O₂ to produce CO₂, we need to consider the initial pressures and the balanced chemical equation:

2CO + O₂ → 2CO₂

Given that the initial pressure of CO is 890 mmHg and the initial pressure of O₂ is 445 mmHg, we can deduce that the reaction proceeds with equal moles of CO and O₂ consumed. This is because the ratio of their initial pressures matches the stoichiometric ratio of the balanced equation (2:1).

Since 2 moles of CO₂ are produced for each mole of O₂ consumed, the final pressure of CO₂ in the flask will be twice the initial pressure of O₂, which is 2 × 445 mmHg = 890 mmHg.

Therefore, the final pressure in the flask after the reaction is 890 mmHg.

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Answer:

It's safe to assume that Naruto surpassed Kakashi during the Pain arc. He was able to defeat Pain and later he was able to use Sage mode as well. His ability to link up with Kurama and his vast chakra reserve make him an incredibly powerful shinobi.

Explanation:

To determine the frequency of radiation emitted by Mg at 285 nm, we can use the relationship between frequency (Hz), speed of light (c), and wavelength (λ). The correct answer is option d, 1.05 x 10^19 Hz.

The relationship between frequency, wavelength, and the speed of light is given by the equation c = λν, where c is the speed of light (approximately 3.00 x 10^8 m/s), λ is the wavelength in meters, and ν is the frequency in Hz.

To convert the given wavelength from nm (nanometers) to meters, we need to divide it by 10^9. Therefore, 285 nm is equal to 285 x 10^-9 m.

Now, we can rearrange the equation c = λν to solve for ν:

ν = c / λ

Substituting the values, we have:

ν = (3.00 x 10^8 m/s) / (285 x 10^-9 m)

ν = (3.00 x 10^8 m/s) x (1 / (285 x 10^-9 m))

ν ≈ 1.05 x 10^19 Hz

Thus, the frequency of the radiation emitted by Mg at 285 nm is approximately 1.05 x 10^19 Hz, which corresponds to option d.

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Acetic acid has a melting point of 17 °C at 20 °C then particles arranged of acetic acid are break down at 20 °C

Melting point is the temperature at which the solid and liquid forms of a pure substance can exist in equilibrium and melting point is the  temperature at which solid changes into liquid form

Acetic acid is a simple monocarboxylic acid containing two carbons. It has a role as a protic solvent, a food acidity regulator, an antimicrobial food preservative and it is a conjugate acid of an acetate and at high melting point means at 20 °C the acetic acid particles get break down and at low melting point means 17 °C the particles are break down slowly

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d. CaSO4 is the correct way to write the formula of the compound formed between the calcium ion and the sulfate ion.

What is CaSO4?

CaSO4 is the chemical formula for calcium sulfate, which is a common compound used in various industries including construction, food, and medicine. It can exist in different forms, such as anhydrous calcium sulfate or hydrated calcium sulfate (gypsum).

What is an ion?

An ion is an atom or molecule that has an unequal number of protons and electrons, resulting in a net electrical charge. An ion with a positive charge is called a cation, while an ion with a negative charge is called an anion.

what is gypsum?

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate (CaSO4·2H2O). It is commonly used in construction as a material for plaster and drywall.

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Answer:

As temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C

Explanation:

HOPE THIS HELPS !

Answer:

Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.

Explanation:

google

Answer:

28.8km/h

Explanation:

Change the 5min to hours.

=5/60 =0.0833hrs

Velocity= Distance /Time

2.4/0.0833

=28.8km/h

Answer:

its b

Explanation:

i took it and got an a

From the samples on the slide made up of tiny cells, Terry can conclude that the cells were produced by other cells.

Cell production occurs often in a human protein, such as yeast, bacteria, or mammalian cells in culture, which then start producing the protein in large quantities. A new organism is created during the process of splicing a gene into a production cell.

Cells are often produced from other cells by the process of replication. All living things, from microorganisms to humans, rely on cells for structure and function. Scientists regard them as the tiniest form of life. Cells contain the biological machinery that produces the proteins, chemicals, and signals that are responsible for everything that occurs within our bodies.

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The five signs of chemical reaction is change in temperature, change in colour, effervescence, formation of precipitate and formation of gas.

A chemical reaction is a process in which the chemical properties of a substance changes.

5 signs that can be observed during the chemical reactions are,

1. Change and temperature.

2. Change in colour.

3. Effervescence.

4. Formation of precipitate.

5. Formation of a gas.

Mainly the chemical reaction occurs when the bonds of the reactant molecules are broken and the new bonds are found retain the reactant molecules of different species.

This process give price to the new properties of the substances.

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Answer:

The number of hydrogen atoms in 36.04 g  sample of steam is 2.408 × 10²⁴ atoms of hydrogen

Explanation:

The  given parameters are;

The mass of the sample of water, H₂O = 36.04 g

From the principle of conservation of matter, the mass of the water = The mass of the steam, therefore;

The mass of the steam = 36.04 g

The molar mass of H₂O = 18.01528 g/mol

Therefore, the number of moles, n, of H₂O in the 36.04 g of steam is given as follows;

n = Mass/(Molar Mass) = (36.04 g)/(18.01528 g/mol) = 2.00052399963 ≈ 2 moles

The number of molecules of H₂O per mole of H₂O is geven by the Avogadro's number = 6.02 × 10²³ molecules

Therefore;

The number of H₂O in 2 moles of H₂O = 2 × 6.02 × 10²³ = 1.204 × 10²⁴ molecules

The number of hydrogen atoms per molecule of H₂O = 2 hydrogen atoms

Therefore;

The number of hydrogen atoms in the 1.204 × 10²⁴ molecules of H₂O = 2 × 1.204 × 10²⁴ molecules of H₂O

Which gives;

The number of hydrogen atoms in the 1.204 × 10²⁴ molecules of H₂O = 2.408 × 10²⁴ atoms of hydrogen

Therefore;

The number of hydrogen atoms in 36.04 g  sample of steam = 2.408 × 10²⁴ atoms of hydrogen.

The reaction temperature X in a certain chemical process follows a uniform distribution with parameters A = -6°C and B = 6°C.

In a uniform distribution, the probability density function (PDF) is constant within a given interval and zero outside that interval. Since the reaction temperature follows a uniform distribution with parameters A = -6°C and B = 6°C, the interval for the temperature values is [-6, 6].

The PDF of a uniform distribution is given by:

\(\[ f(x) = \frac{1}{B - A} \]\)

Substituting the values, we have:

\(\[ f(x) = \frac{1}{6 - (-6)} = \frac{1}{12} \]\)

This means that the PDF of the reaction temperature X in the chemical process is \(\frac{1}{12}\) within the interval [-6, 6], and it is zero outside this interval.

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Answer: B. Fire is releasing energy

Explanation:

Answer:

balenced

Explanation:

Answer:

Explanation:

Answer: D

STRONG ACIDS:

HBr

HCl

HI

HNO3

HClO4

H2SO4

The new pressure, when the temperature is increased from 20°C to 35°C with constant volume and an original pressure of 1.2 atm, is approximately 1.263 atm.

If the temperature of a gas is increased from 20°C to 35°C, and the volume is kept constant, the new pressure can be calculated using the ideal gas law.
Assuming an original pressure of 1.2 atm, the new pressure can be determined.

To find the new pressure, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperatures to Kelvin.
The original temperature of 20°C is equal to 293 K, and the new temperature of 35°C is equal to 308 K.

Since the volume is constant, we can write the equation as P1/T1 = P2/T2, where P1 is the original pressure, T1 is the original temperature in Kelvin, P2 is the new pressure, and T2 is the new temperature in Kelvin.

Substituting the given values, we have:

(1.2 atm) / (293 K) = P2 / (308 K)

Solving for P2, the new pressure:

P2 = (1.2 atm) * (308 K) / (293 K) ≈ 1.263 atm

Therefore, the new pressure, when the temperature is increased from 20°C to 35°C with constant volume and an original pressure of 1.2 atm, is approximately 1.263 atm.

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Answer:

Respiration

Explanation:

The act of breathing, simple as that!

Hope this helped!!

Answer:

n = 0.223 mol.

Explanation:

Hello there!

In this case, according to the given information, it is possible for us to approach this problem via the ideal gas law, which involves the pressure, moles, temperature and volume of the gas:

\(PV=nRT\\\\\)

Thus, by solving for moles we obtain:

\(n=\frac{PV}{RT}\)

Therefore, we plug in the given volume, temperature (in Kelvins) and pressure to obtain:

\(n=\frac{0.9atm*8L}{0.08206\frac{atm*L}{mol*K}*(120+273)K} \\\\n=0.223mol\)

Best regards!

The number of moles of PbCl₂ that will be produced if 16 moles aluminium chloride are consumed is 24 moles.

Stoichiometry is the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, lead nitrate reacts with aluminum chloride as follows:

3Pb(NO₃)₂ + 2AlCl₃ → 3PbCl₂ + 2Al(NO₃)₃

Based on the above equation, 2 moles of aluminium chloride produces 3 moles of lead chloride.

This means that 16 × 3/2 = 24 moles of lead chloride will be produced.

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The experiment that led to the determination that electrons act as both particles and waves is Feynman's Double Slit Experiment.

Feynman anticipated that electrons would behave like particles when just one slit was open. When both slits were open, however, the electrons generated a distinctive pattern of light and black fringes on the detector due to wave interference.

Based on the American Physical Society, the earliest iteration of the double-slit experiment was performed in 1801 by the British polymath Thomas Young (APS). His work proved the interference of light waves and established that light was a wave rather than a particle.

The double-slit experiment is proof in contemporary physics that light and matter may exhibit properties of both conventionally defined waves and particles; moreover, it demonstrates the essentially probabilistic nature of quantum mechanical events.

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Answer:

To draw a Lewis structure for a covalent compound, begin by calculating A, the available electrons, and N, the needed electrons.

What is N for silicon tetrachloride, SiCl4?

Explanation:

A covalent compound is formed by the mutual sharing of electrons between two atoms.

According to Lewis octet theory, every atom wants to attain eight electrons around it.

For the given molecule SiCl4

Silicon has four valence electrons.

To attain the nearest inert gas configuration it requires four more electrons.

Each chlorine atom shares an electron and thus silicon attains eight electrons in its valence shell.

The Chlorine atom has seven valence electrons.

To get eight electrons in its valence shell it needs one more electron.

That is shared by the silicon atom.

Thus both Si and Cl attain eight valence electrons by sharing electrons and for the covalent bond.

N value for Si is --- 4.

A the available electrons for Si is ---- 4.

The available electrons for Si 4 and the needed electrons are also 4. A covalent compound is formed by the equal sharing of electrons between two atoms.  

A covalent compound is formed by the equal sharing of electrons between two atoms.  

According to Lewis octet theory, every atom wants to attain eight electrons in the shell.  

For the given molecule \(\bold {SiCl_4}\)  

Thus both Si and Cl attain eight valence electrons by sharing electrons and for the covalent bond.  

Therefore,  the available electrons for Si 4 and the needed electrons are also 4.

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Answer:

The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.

Explanation:

Answer:

The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma.

Answer:

Yes

Explanation:

Metals can bond with each other, both on a macroscopic level and on a molecular level. The former is found in any piece of metal, which is held together by metallic bonding. This can be more than one metal in the case of alloys, which are an intimate mixture of two or more different metals.

Answer:

he universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.

Ocean tides are caused by the uneven gravitational pulls of the Moon and Sun on different parts of Earth.

Explanation:

These statements are objective truths or rational speculations adequately supported by evidence.  The others are from unreliable sources, and are based on opinion.

the answer is A!

Answer:

A and C are correct, I took the test

Explanation:

Answer:

Why ? Because 1 molecule of H2SO4 gives 2 H+ ions per molecule while only one H+ ion is required to neutralize 1 molecule of KOH. So, 1 molecule of H2SO4 can neutralize 2 molecules of KOH. Hence, we would require 525 ml of 0.03 M H2SO4 to neutralize 525 ml of 0.06 M KOH. How will we prepare 525 ml of 0.03 M H2SO4 ?

Explanation:

Now, we have 0.025 M H2SO4 and we do not know how much volume we have.

We will use the standard N1 X V1 = N2 X V2 for this calculation.

N1=0.025 M; V1=unknown; N2=0.03 M and V2=525 ml.

So V1= (0.03 X 525)/(0.025) = 630 ml.

According to the molar concentration, 684 ml of 0.25 M H₂SO₄ can be prepared from 57 mL of a 3.0 M solution of H₂SO₄.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.In case  of 2 solutions,it is calculated as, M₁V₁=M₂V₂ substitution gives V₁=3×57/0.25=684 ml.

Thus, 684 ml of 0.25 M H₂SO₄ can be prepared from 57 mL of a 3.0 M solution of H₂SO₄.

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Plutonium is one of the most toxic substances known because it can produce significant amounts of alpha particles, which are highly ionizing.

Alpha particles can damage living tissues, causing mutations that can lead to cancer and other diseases. Although the layer of dead skin on our bodies is sufficient to protect us from most alpha particles, plutonium can enter the body through ingestion, inhalation, or injection. Once inside the body, plutonium can accumulate in the bones, liver, and other organs, where it continues to emit alpha particles and cause damage. Additionally, the chemistry of Pu^4+ is similar to that of Fe^3+, allowing plutonium to be taken up and stored by the body's iron transport proteins. Finally, the fact that Pu oxidizes readily to Pu^4+ means that it can easily form water-soluble compounds, making it more easily absorbed by the body and more toxic.

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Answer:

cd

Explanation:

that's better

Answer:

D: Fe + Cu(NO3)2 ->.

Worked for me on EG 2023