Use the reaction shown below to answer the question:

Fe2O3 + 3 C —-> 2 Fe + 3 CO

What volume of CO (in L), measured at 745 torr and 23°C, is produced when 4.00 moles of iron (III) oxide are reacted?

Answer:

its b

Explanation:

just did the test on A P E X

If the isotope models are accurate, One shows 8 neutrons, and one shows 9. Therefore, the correct option is option B.

A chemical element's isotope is one of more than one species of atoms that share the same atomic number, spot on the periodic table, and almost identical chemical activity, but differ in atomic mass and physical characteristics. There are a number of isotopes for each chemical element.

The first step in identifying and labelling an atom is to count the protons within its nucleus. Usually, this nuclear number is denoted by the letter Z. The fact that all atoms possessing the same number of electrons have essentially equal chemical characteristics lends the atomic number its enormous significance. If the isotope models are accurate, One shows 8 neutrons, and one shows 9.

Therefore, the correct option is option B. If the isotope models are accurate, One shows 8 neutrons, and one shows 9.

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We know that the dipole moment moves from the negative to the positive line thus it is shown by option A

The dipole moment is a measure of the polarity of a chemical bond or a molecule. It is defined as the product of the magnitude of the charge on either end of a polar covalent bond and the distance between them. The dipole moment of a molecule is a vector quantity, with a direction pointing from the negatively charged end of the molecule to the positively charged end.

In simple terms, the dipole moment represents the separation of positive and negative charges within a molecule. The greater the dipole moment of a molecule, the more polar it is and the more likely it is to interact with other polar molecules or ions.

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Chlorine is more reactive than bromine because it replaces both bromine and iodine.

Fluorine is the most sensitive while on the other hand, the astatine is the least reactive as compared to other elements. The chlorine displaces both bromine and iodine, and bromine displaces iodine because of its high reactivity. The element that replaces other atom is considered as more reactive.

The order of reactivity is that the chlorine is more reactive than bromine, which indicates that chlorine is more reactive than iodine.

So we can conclude that chlorine is more reactive than bromine due to high reactivity.

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Answer:

its sodium hydroxide

Explanation:

Answer:

Explanation:

m= 80.0 g

Cp=0.8 J/gc

Change in T= 25

q=Cp X m X T  =0.8 X 80.0 X 25 =1600J

Postive q or enthalpy makes it endothermic.

The number of molecules of sugar, C₁₂H₂₂O₁₁ you ingest given the data is 6.86×10²² molecules

1 mole of C₁₂H₂₂O₁₁ = 6.02×10²³ molecules

But

1 mole of C₁₂H₂₂O₁₁ = 342 g

Thus,

342 g of C₁₂H₂₂O₁₁ = 6.02×10²³ molecules

342 g of C₁₂H₂₂O₁₁ = 6.02×10²³ molecules

Therefore,

39 g of C₁₂H₂₂O₁₁ = (39 × 6.02×10²³) / 342

39 g of C₁₂H₂₂O₁₁ = 6.86×10²² molecules

Thus, 6.86×10²² molecules are present in 39 g of sugar, C₁₂H₂₂O₁₁

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Answer:

1. balanced

2. balanced

3. unbalanced

4. balanced

5. balanced

6. unbalanced

7. balanced

8. unbalanced

Explanation:

Answer:

1000 ml

Explanation:

hope it helpssssssss

Answer:

1000 ml because the bigger ml the greater density brainliest pls

The name of the compound from the structure that we can see in the question is;

4,4-dibromohex-2one

The International Union of Pure and Applied Chemistry (IUPAC) established a systematic set of guidelines for naming organic compounds.

Find the compound's longest continuous chain of carbon atoms. The compound's name is derived from this chain, which also acts as the compound's parent chain.

Assign a number to each carbon atom in the parent chain to give each carbon atom in the compound a special identification. The end that is closest to the functional group or substitutes is where the numbering begins.

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Answer:

It depends on how much the calories and fat there is in the meals and if you don't get enough physical activity of the same amount of food that you eat it can lead to weight gain

Explanation:

Answer:

Explanation:

1 . The strongest force observed at the surface of glass is:__DIPOLE______

2. . Water is__POLAR_________ and interacts, generating adhesive interactions with the only weak dispersion strong hydrogen bonding polar glass.

3 . Hexane is_NON-POLAR _______ and interacts, generating__ONLY WEAK __________ adhesive interactions with the glass.

Substance       intermolecular force

CH2OH   --->   Hydrogen bonding

CH3F       -->    Dipole-dipole forces

C3H8       -->    Dispersion forces

CaCL2      -->   Ionic bonding

The intermolecular force present in CH2OH is hydrogen bonding. The intermolecular force present in CH3F is  Dipole-dipole forces. Ionic bonding is defined as a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions or between two atoms with sharply different electronegativities. It is the primary interaction occurring in ionic compounds. Hydrogen bonding results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom and another very electronegative atom.

Dipole-dipole forces are defined as a attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.  Dispersion force is defined as a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.

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The complete question is,

Match each substance correctly to the principal type(s) of intermolecular force(s) present, other than covalent bonding.

CH2OH          Ionic bonding

CH3F              Hydrogen bonding

C3H8              Dispersion forces

CaCL2            Dipole-dipole forces

Answer:

the answer is c I tink good luck

Answer:

C. Warm surface water is reduced, causing colder conditions than normal.

Explanation:

During El Niño, trade winds are weak. During La Niña, it's the opposite. The surface winds across the entire tropical Pacific are stronger than usual, and most of the tropical Pacific Ocean is cooler than average. Rainfall increases over Indonesia (where waters remain warm) and decreases over the central tropical Pacific

Answer:

SI-28

Explanation:

1. Earthquakes and Eruptions (volcanoes)

2. Divergent plate boundary

3. Apart from a widening valley, it equally contributes to steep mountain sides spreading. A mid-oceanic ridge is naturally produced if two oceanic plates naturally start moving away from each other.

1. When a divergent boundary occurs beneath oceanic lithosphere, the rising convection current below lifts the lithosphere, producing a mid-ocean ridge. Extensional forces stretch the lithosphere and produce a deep fissure. When the fissure opens, pressure is reduced on the super-heated mantle material below. It responds by melting, and the new magma flows into the fissure. The magma then solidifies and the process repeats itself.

2. When two plate diverge from each other also known as divergent (di-apart, vergere- to inclined) plate margin .

Two plate diverge along oceanic ridges where new lithosphere is created.

Now come to the main point: Geological Features

When two oceanic plate diverge then new sea floor is created by a process called sea floor spreading and features like Mid oceanic ridges, volcanoes & Young lava flows forms. Ex. East Pacific Rise, Mid-Adlantic Ridge.

When two continental plates diverge by continental rifting then features like Rift valley, volcanoes are found. Ex of continent continent -East Africa rift vally, Red sea.

3. The major difference between different types is what type of plate the divergent boundary is between. If the boundary is found between two continental plates you are left with a rift valley. ... If two oceanic plates begin moving away from each other it creates a mid-oceanic ridge.

Thank You!

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Have a good day studying!

This is due to the fact that a substance's chemical qualities, such as its molecular form, polarity, and functional groups, govern how it behaves and interacts with other substances.

By illustrating the spatial arrangement of atoms and chemical bonds within the molecule, chemical structure establishes the molecular geometry of a compound. In doing so, chemists are given a crucial visual depiction of a chemical formula.

In a chemical reaction, reactants come into contact with one another, atoms in the reactants break their connections with one another, and then the atoms reorganise and form new bonds to create the products.

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The oxidation number of Ag in Ag2O is +1.

In Ag2O, there are two silver atoms (Ag) and one oxygen atom (O). Oxygen is known to have an oxidation number of -2 in most compounds. Since the compound is neutral, the sum of the oxidation numbers of all the atoms must equal zero.

Therefore, the oxidation numbers of the two silver atoms must add up to +2 to balance out the -2 oxidation number of the oxygen atom. Since there are two silver atoms, each silver atom must have an oxidation number of +1 to yield a total oxidation number of +2 for the compound.

In Ag2O, the silver atoms lose one electron each to form Ag+ ions. This results in an oxidation number of +1 for each silver atom. The oxygen atom gains two electrons from the silver atoms to achieve a stable octet configuration, resulting in an oxidation number of -2 for the oxygen atom. The compound Ag2O is formed through the transfer of electrons, with each silver atom exhibiting an oxidation number of +1.

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Answer:

\(V=8.10L\)

Explanation:

Hello,

In this case, we can use the freezing point depression formula in order to compute the molality of the mentioned solute (ethylene glycol) considering a van't hoff factor of 1 since it is a covalent molecule:

\(\Delta T=-i*m*Kf\\\\m=\frac{\Delta T}{i*Kf}=\frac{(-17.8-0)\°C}{1*1.86\°C/m}=9.57m\)

Next, since water density is 1 kg/L and molal units are mol/kg, we compute the present moles of solute:

\(n=9.57mol/kg*15.0kg=143.55mol\)

Next, the mass with its molar mass (62.07 g/mol):

\(m=143.55mol*62.07g/mol=8910.05g\)

Finally, with the given density we compute the required volume in liters:

\(V=8910.05g*\frac{1mL}{1.1g} *\frac{1L}{1000mL}\\ \\V=8.10L\)

Best regards.

Answer:

On heating sodium hydrogen carbonate (NaHCO3). It decomposes to form sodium carbonate (Na2CO3), water (H2O) and carbon dioxide (CO2)

(ii) 2NaHCO3(s)Heatsodiumcarbonate(sodaash)Na2CO3(s)+CO2(g)+H2O(l)

Answer:

Explanation:

2H + + CO3 2- = H2CO3

pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration ([H+]) in a solution. Therefore, option (C) is correct.

In other words, the pH scale measures the acidity or basicity of a solution. The lower the pH value, the more acidic the solution is, and the higher the pH value, the more basic or alkaline the solution is.

For example, pure water has a pH of 7, which is considered neutral, meaning it is neither acidic nor basic. Acids have pH values lower than 7, while bases have pH values greater than 7. The pH scale is important in many areas of chemistry, including biochemistry, environmental science, and medicine.

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Choosing a biome for a research project can provide a wealth of opportunities to better understand the natural world and contribute to important conservation and management efforts.

There are several convincing reasons for researchers to choose a particular biome for their project, some of which include:

Biodiversity: Biomes are characterized by their unique plant and animal species, which can provide a diverse range of research opportunities, including studying their adaptations, behaviors, and interactions.

Climate Change: Biomes are also influenced by climate change, making them an important area of research to better understand how these ecosystems are being affected by changes in temperature and precipitation patterns.

Human Impacts: Human activities, such as deforestation, agriculture, and urbanization, can have a significant impact on biomes. Studying these impacts can help researchers better understand how to mitigate and manage these effects.

Biogeochemical Cycles: Biomes are also important for studying biogeochemical cycles, such as the carbon and nitrogen cycles, which are essential for sustaining life on Earth.

Conservation: Finally, studying biomes can also contribute to conservation efforts, helping to preserve these unique ecosystems and the species that inhabit them.

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Answer:

The three pKa values for phosphoric acid (H3PO4) are 2.12, 7.21, and 12.32.

Answer:

question no 4 answer is electrons

The reactions that result in the emission of light involve the ruthenium label and tripropylamine (TPA), two electrochemically active molecules.

Thus, The electrode surface inside the measurement cell is where the reactions take place.

The ruthenium label is oxidized at the electrode surface as an electrical potential is applied, and TPA is oxidized into a radical cation that spontaneously loses a proton.

When the resultant TPA radical interacts with oxidized ruthenium, the ruthenium label enters an excited state and emits a photon (620 nm) before decaying. The ruthenium label is renewed and ready to carry out numerous light-generating cycles as it goes back to its ground state.

Thus, The reactions that result in the emission of light involve the ruthenium label and tripropylamine (TPA), two electrochemically active molecules.

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The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

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Answer:

where is the question

Explanation: