How many moles are present in 44.8 L of nitrogen gas (Na)?

Answer:

E=mc^2 is correct answer, last one

Explanation:

Hope it will help you

Unit conversions used for unit conversions are used to write very large numbers.

Unit conversion is the process of converting the measurement of a given amount between various units, often by multiplicative conversion factors that alter the value of the measured quantity without altering its effects. The term "conversion" describes the procedure of altering or converting a word's class without altering its form.

Even if it was solely used as a noun in the past, the term "email" is now a verb in Modern English. The measurement's unit is crucial. We can learn about a thing's property through measuring. It provides information about an object's weight or length. We can assign a number to that property using a measurement.

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Unit conversions used for unit conversions are used to write very large numbers.

Unit conversion is the process of converting the measurement of a given amount between various units, often by multiplicative conversion factors that alter the value of the measured quantity without altering its effects. The term "conversion" describes the procedure of altering or converting a word's class without altering its form.

Even if it was solely used as a noun in the past, the term "email" is now a verb in Modern English. The measurement's unit is crucial. We can learn about a thing's property through measuring. It provides information about an object's weight or length. We can assign a number to that property using a measurement.

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A displacement reaction will occur from the system given above. The chlorine molecules will displace the bromide ions in the solution of sodium bromide. The reaction will yield to sodium chloride and bromine. The reaction will be:

2NaBr + Cl2 = 2NaCl + Br2

Answer:

When chlorine gas is bubbled in a solution of sodium bromide, the sodium bromide reacts and gives bromine which is a brown liquid and sodium chloride which is ordinary table salt.

Without enough iron, Andrew may not have sufficient hemoglobin. When hemoglobin is not present in sufficient amounts, the equilibrium shifts in the direction of decreased oxygen binding to red blood cells.

This means that each time Andrew breathes in, the oxygen in the air is not being transported efficiently by his red blood cells to his tissues. As a result, his tissues are not obtaining sufficient oxygen, which can lead to symptoms such as fatigue, shortness of breath, and headaches.

To address this issue, Andrew may need to increase his iron intake through diet or supplements, or undergo medical treatment if the problem is more severe. Overall, it is important to identify and address any underlying factors that may be contributing to inadequate oxygen transport in the body to ensure optimal health and functioning.

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An atom's radius is well under 1 nanometer, or one billionth of a meter.

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Answer:Your can use the internet There is a web site that is called periodic table.com it is very use full

Explanation:Have fun

At 20°c only 0.24 g of an organic acid a dissolves in 100. ml of water, but 2.70 g of the same acid dissolves in 100. ml of ether. The value of the partition coefficient is 0.089

The partition coefficient (Kp) is the ratio of the concentration of a substance in one phase to its concentration in another phase. In this example, Kp is the ratio of the concentration of the organic acid in water to its concentration in ether.
Kp = (Concentration of acid in water / Concentration of acid in ether)
At 20°C, 0.24 g of the organic acid dissolved in 100 mL of water, and 2.70 g of the same acid dissolved in 100 mL of ether.
Therefore, the partition coefficient can be calculated as follows:
Kp = (0.24 g/100 mL) / (2.70 g/100 mL) = 0.089
This value of Kp indicates that the organic acid is more soluble in ether than in water, since the ratio of the acid’s concentration in ether to its concentration in water is greater than 1.
Partition coefficient values can be used to determine the solubility of a substance in different solvents, and can be used to measure the affinity of a substance for one solvent over another.

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Answer: I'm not sure what answer to give you since there are no answer choices, but here is what I got.

Explanation:

Mg is a reducing agent, Fe 2O 3 is an oxidizing agent.

Igniting a mixture of Fe2O3 and Al with a magnesium ribbon fuse produces molten iron and aluminum oxide in an impressive exothermic reaction.

Hope this helped a little:(

Answer:

See explanation

Explanation:

Electronegativity is the ability of an atom in a compound to attract the shared electron pair of a bond towards itself.

Electronegativity is one of the periodic trends. It decreases down the group and increases across the period. This implies that as you move from left to right in the periodic table, atoms of elements become more electronegative.

Remember also that non-metallic property increases from left to right in the periodic table. This means that as you move from left to right, metallic properties such as thermal conduction decreases.

It then follows that as electronegativity increases, electrical conductivity decreases from left to right in the periodic table.

Given Figure 2 below shows a set of contour lines for temperature, and the question wants you to complete a simple analysis of temperature. The analysis should be made for the 75 and 70°F isotherms. The 80°F contour is also to be analyzed.

Figure 2 From the image above, we can identify the following contour lines and their values:Contour line C1 is for a temperature of 60°F.Contour line C2 is for a temperature of 65°F.Contour line C3 is for a temperature of 70°F.Contour line C4 is for a temperature of 75°F.Contour line C5 is for a temperature of 80°F.Using the given information, we can then proceed to answer the questions as follows:Analysis for the 75°F isotherm Contour line C4 shows a temperature of 75°F. This means that any point lying on this contour line has a temperature value of 75°F. Therefore, we can conclude that the following regions have a temperature of 75°F:Region A: This region is enclosed by contour lines C3 and C4.

Thus, it has a temperature of 75°F.Region B: This region is enclosed by contour lines C4 and C5. Thus, it has a temperature of 75°F.Analysis for the 70°F isotherm Contour line C3 shows a temperature of 70°F. This means that any point lying on this contour line has a temperature value of 70°F. Therefore, we can conclude that the following regions have a temperature of 70°F:Region C: This region is enclosed by contour lines C2 and C3. Thus, it has a temperature of 70°F.Region D: This region is enclosed by contour lines C3 and C4. Thus, it has a temperature of 70°F.Analysis for the 80°F contourContour line C5 shows a temperature of 80°F. This means that any point lying on this contour line has a temperature value of 80°F. Therefore, we can conclude that the following regions have a temperature of 80°F:Region E: This region is enclosed by contour lines C4 and C5. Thus, it has a temperature of 80°F.

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The attractive force between water molecules that results from hydrogen bonding is called hydrogen bonding.

Hydrogen bonding is a type of intermolecular force that arises when hydrogen atoms are covalently bonded to atoms of high electronegativity, such as oxygen, nitrogen, and fluorine. These hydrogen bonds form strong attractions between the molecules, giving water its high surface tension and other unique properties. These hydrogen bonds form strong attractions between the molecules, giving water its unique properties such as high surface tension, high boiling point, and low vapor pressure. Hydrogen bonding is responsible for the stability of many biological molecules such as DNA and proteins, and for the increased solubility of many compounds in water.

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Answer:

b

Explanation:

i think its b because theories are usually developed after many experiments/tests by different scientists. at least i think so lol i dont remember too much from biology

In the given reaction, the spectator ion is NO₃⁻ (nitrate ion).

A spectator ion is an ion that does not participate in the overall chemical reaction and remains unchanged throughout the reaction. It is present on both sides of the equation.

In this case, LiNO₃ and NaNO₃ are both soluble compounds that dissociate into their respective ions in aqueous solution. The Li⁺ (lithium ion) and Na⁺ (sodium ion) are involved in the reaction, but they are not spectator ions.

On the other hand, NO₃⁻ appears as a common ion in both the reactant (LiNO₃) and the product (NaNO₃). It does not undergo any chemical changes and remains in solution as a spectator ion.

Therefore, the spectator ion in this reaction is NO₃⁻.

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Answer:

2Na2O2 + 2H2O → 4NaOH + O2 is the balanced ver of Na2O2 + H2O - NaOH + O2

Explanation:

Answer:

V = 25.7 L.  

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve for the volume of hydrogen, by firstly calculating the moles of this gas produced by 37.6 g of magnesium, according to the 1:1 mole ratio between them:

\(n_{H_2}=37.6gMg*\frac{1molMg}{24.305gMg}*\frac{1molH_2}{1molMg}=1.55molH_2\)

Now, we use the ideal gas equation:

\(PV=nRT\)

To solve for the volume, and obtain:

\(V=\frac{nRT}{P}\\\\V=\frac{1.55mol*0.08206\frac{atm*L}{mol*K}*293.15K}{1.45atm}\\\\V=25.7L\)

Regards!

Answer:

Denaturation is what happens when heat is applied to the eggs. ... The heat coming from your stove denatures the protein by disrupting some of its bonds that held the molecule into shape. In the case of hard-boiled eggs, the proteins clump together and solidify, causing the egg white and yolk to harden.

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Answer:

the stomach, esophagus, buccal-cavity, intestine, rectum, pancreas, liver, etc  

Explanation: hope this helps

The ABC step is slow is the correct option as the formation of a carbocation is the slowest step in the reaction.

So, carbocation formation is the rate-determining step of a unimolecular substitution reaction.

Carbocation is a type of intermediate species that is involved in the rate-determining step of unimolecular substitution reactions.

The formation of a carbocation is the slowest step in this reaction, and that is why it is the rate-determining step.

The given answer option “The ABC step is slow” is therefore correct.

Explanation:
A carbocation is a cation with a carbon atom that has a positively charged carbon atom.

A carbocation forms due to the loss of an electron pair from the carbon atom, leaving a vacant orbital that is capable of accepting an electron pair.

Carbocations are high in energy and are unstable.
In a unimolecular substitution reaction, carbocation formation is the rate-determining step because the reaction rate depends on the stability of the carbocation.

As the carbocation formed is highly unstable and energy is required to create it, it is the rate-determining step.
Carbocation formation is a reversible process, which means that it doesn’t readily occur.

The nucleophile is too weak to attack without a carbocation present is incorrect because nucleophiles are strong and attack positively charged carbocations.

Solvents can act as nucleophiles but it is not true for all reactions.

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The coefficients needed to balance the redox reaction are: 2Fe(s) + 3Cl2(g) + 6H+(aq) -> 2Fe3+(aq) + 6Cl-(aq) + 3H2O(l)

The balanced redox reaction requires two molecules of chlorine gas to react with one atom of iron, producing one Fe3+ ion and two chloride ions. We need to balance both the mass and charge on each side of the equation.

Step 1: Balance the atoms other than oxygen and hydrogen.

Fe(s) + Cl2(g) -> Fe3+(aq) + 2Cl-(aq)

Step 2: Balance the oxygen atoms by adding water (H2O) molecules.

Fe(s) + Cl2(g) -> Fe3+(aq) + 2Cl-(aq) + H2O(l)

Step 3: Balance the hydrogen atoms by adding hydrogen ions (H+).

Fe(s) + Cl2(g) + 6H+(aq) -> Fe3+(aq) + 2Cl-(aq) + H2O(l)

Step 4: Balance the charges by adding electrons (e-).

Fe(s) + Cl2(g) + 6H+(aq) -> Fe3+(aq) + 2Cl-(aq) + H2O(l) + 6e-

The balanced equation for the redox reaction is:

2Fe(s) + 3Cl2(g) + 6H+(aq) -> 2Fe3+(aq) + 6Cl-(aq) + 3H2O(l)

The balanced redox reaction is 2 Fe(s) + 3 Cl2(g) -> 2 Fe3+(aq) + 6 Cl-(aq) with coefficients 2, 3, 2, and 6 respectively.

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The conjugated compounds are : But-2-ene , Hex-4-ene-3-one

The non - conjugated compounds are : Butanoic acid , Hexan - 3 ene.

The Conjugation in the chemistry is the mixing of the p - orbitals of the one atom to the another p orbital in the neighboring sigma bond. The conjugated compounds are those which have the alternation of the double bond and the single bond.

In the the non-conjugated compound there is no such alternation of the double bond and the single bond. The examples of the conjugated and non conjugated compounds are :

     conjugated                   non conjugated

But-2-ene                             Butanoic acid

Hex-4-ene-3-one                Hexan - 3 ene.

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Answer:

Here:

Explanation:

A high pressure system means that particles will be close together in confined space and a low pressure system means there will be less particles close together

OR

A high pressure system means that cool air is sinking whereas a low pressure system is where cool air is rising. A low pressure system has lower pressure at its center than the areas around it.

Answer:

it disappeared loll jk

it obviously dried

well you may Mark me as brainliest

The chemist is likely planning a solid-phase oligosaccharide synthesis experiment.

Solid-phase oligosaccharide synthesis involves the stepwise assembly of carbohydrate chains on a solid support using blocking groups and activating groups. The blocking groups protect specific functional groups to ensure selective reactions, while the activating groups enhance the reactivity of certain functional groups during the synthesis process. This method allows for the controlled and sequential addition of monosaccharide units to build up complex oligosaccharide structures. The resulting oligosaccharides can then be analyzed using various techniques such as nuclear magnetic resonance (NMR) analysis, liquid chromatography mass spectrometry/mass spectrometry (LC-MS/MS) analysis, or other analytical methods to characterize their structure and properties.

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The fraction of chromium in cr(h2o)w21(oh)21 is 0.000185.

Regardless of how strong or weak an acid is, it dissociates into water in a similar way.

H+ A -> H A-.

Its dissociation constant value is influenced by the acid's Ka value, which is defined as the acid's dissociation constant. If Ka is higher, the acid is more acidic, and vice versa if pKa is higher, the acid is more acidic.

More pKa is equal to -log(Ka), so if Ka is 10 then pKa is -1, and if Ka is 1000 then pKa is -3, meaning that the less acidic the solution is, the more pKa there is.

Consider that I had an acid with a C initial concentration. If a certain amount of A dissociates upon equilibrium, I obtain the equilibrium concentration of the acid as C-A and the equilibrium concentration of both H and the conjugate (Ac-) as A. because their stoichiometric coefficients are nearly equal for both.

You can write the Ka expression as follows using this information.

Ka is equal to [H] [Ac-] / [HAc].

A * A / C-A results from substitution.

Fraction of chromium= Ph/Pk

=0.010/53.80=0.000185.

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Answer:

Chemoheterotrophs

Explanation:

they use organic chemical substances AKA perform chemosynthesis. Many microscopic organisms do this.

Answer:

physical science

Explanation:

because it touches all other natural sciences. biology,physics, etc. it is known as the central science:)

Chemistry is a branch of science that focuses on the study of matter, its properties, composition, and how it undergoes changes.Thus, it is a physical science.

Chemistry is a physical science because it investigates the physical and chemical properties of matter, including atoms, molecules, and their interactions. It is also considered a natural science because it studies natural phenomena and processes that occur in the world around us.

Chemistry plays a crucial role in various fields such as medicine, environmental science, materials science, and biochemistry.

In chemistry, scientists use experiments and observations to gather data and analyze it using various techniques and tools. They also develop theories and models to explain the behavior and interactions of matter.

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