What is the concentration of the solution, expressed in percent by mass, that is formed from the mixing of 7.8 g from nacl into a 134.0 g of h2o

When glucose is converted to pyruvate, free energy is released, and some of this is captured by coupled reactions that produce ATP and NADH. Therefore, the correct option is c.

What is the model of Matter and Energy Transformation?

The model of Matter and Energy Transformation is a framework that explains the transformation of matter and energy through ecosystems.

It assists in understanding how materials and energy are passed from one organism to the next, as well as how they are modified throughout the ecosystem's energy system.

During the process of glucose conversion to pyruvate, free energy is released, which is captured by coupled reactions that produce ATP and NADH.

The conversion process of glucose to pyruvate takes place in the cell's cytoplasm, and it's the first step in both aerobic and anaerobic cellular respiration. Pyruvate can be used in the mitochondria to produce more ATP (cellular energy).

Therefore, based on the model of Matter and Energy Transformation from class and the laws of thermodynamics, when glucose is converted to pyruvate, free energy is released, which is captured by coupled reactions that produce ATP and NADH. So, the correct option is c.

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Answer:

12

Explanation:

23-11, why?, because, the difference between atomic and mass number is the neutron number which most a times is equivalent to the electron number.

It is 194.88 moles of oxygen that the chemical engineer determined in the sample of methyl tert-butyl ether if there are 81.2 moles of carbon

If C5H12O the formula of methyl tert-butyl ether, it is observed that there are 5 hydrogen atoms for every 12 oxygen atoms

And if each mole contains exactly 6.022 × 10∧23 atoms, according to Avogadro's number, then a simple rule of thumb can determine how many hydrogen atoms are present.

1 mole ------------- 6.022 ×10∧23

81.2 moles ----------- x

X = 81.2 x 6.022 140 76×10∧23

x = 488,986 x 10∧23

Once again, by the rule of three, the amount of elementary oxygen particles is determined.

 5 H atoms ---------- 12 O atoms

488.986 x ×1023 H ------ x O

X = 488,986 x ×10∧23 x 12 /5

X = 1173.567 x 10∧23

And with the rule of three and Avogadro's number, the number of moles of oxygen is also determined.

6.022 ×1023 ------------- 1 mol

1173.567 x 1023----------- x mol

X moles = 1173.567 x 10∧23 x 1 / 6.022 x 10∧23

X = 194.88 moles

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Hexa-2,4-diene-1,6-diol,cis,cis- Muconic alcohol is the name of this Molecule.

The chemical compound 2,4-Dinitrophenol (often known as 2,4-DNP or simply DNP) has the formula HOC6H3(NO2)2. It smells pleasant and musty and is a yellow, crystalline substance. It is soluble in the majority of organic solvents as well as aqueous alkaline solutions, sublimates, and is volatile with steam.

Picric acid is a base that can be made into picramic acid, also known as 2-amino-4,6-dinitrophenol, by neutralizing it with an alcoholic solution of ammonium hydroxide. The resulting solution is then treated with hydrogen sulfide, which causes it to turn red and produce sulfur and red crystals.

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In general, when the temperature rises, a solute becomes more soluble in a particular solvent.

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Answer:

HCl is a polar covalent compound, because of electronegativity difference between Cl(3.5) and hydrogen (2). Hence in this way, the bond between HCl breaks and they formed ions in the polar solvent like water .

Answer:

You can see that the line is going up and is curved in a positive direction.

Explanation:

When an object is speeding up, the acceleration is in the same direction as the velocity. Thus, this object has a positive acceleration.

The process in the nitrogen cycle that turns dead plants and animals into ammonium is known as ammonification.

Ammonification is one of the significant steps in the nitrogen cycle. This process occurs when organic nitrogen is broken down into ammonium, which is also known as ammonia. During this process, dead plants and animals are converted into ammonium by decomposer microorganisms. These microorganisms produce enzymes that break down the nitrogen in organic matter, releasing ammonium as a result. The ammonium produced in this process is used by plants to create proteins, DNA, and other vital compounds.

Therefore, ammonification plays a critical role in the nitrogen cycle by converting organic nitrogen into ammonium, which is the primary source of nitrogen for plants. The ammonification process is also essential in breaking down complex organic matter into simple organic compounds that can be easily absorbed by plants.

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When hex-3-yne reacts with one equivalent of HCl, the major product is 3-chlorohex-1-ene. This is because the HCl adds across the triple bond in a regioselective manner, following Markovnikov's rule.

The major product for the reaction of hex-3-yne with one equivalent of HCl is 3-chlorohexene. The HCl adds to the triple bond, breaking the π-bond and forming a new σ-bond between the H and the C.

The addition occurs through a Markovnikov addition, meaning the Cl attaches to the carbon with more hydrogens already attached. This is because the positive charge on the intermediate carbocation is stabilized by the additional hydrogens.

The mechanism for the reaction involves protonation of the triple bond to form a carbocation intermediate. The HCl then adds to the carbocation to form the final product. Here is the drawn structure of the major product: H H | | H-C=C-C-C-H + H-Cl --> H-C-C=C-C-H | | | H H Cl

Note that the stereocenter at the third carbon is not affected in this reaction. This transformation is an example of an addition reaction, where a molecule is added to a double or triple bond, resulting in the formation of a single bond.

The reaction is a hydrohalogenation, and the transformation results in breaking the triple bond and forming a new single bond between the carbon and the chlorine atom.

This type of reaction is very important in organic chemistry, as it allows for the synthesis of a wide variety of compounds.

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Answer:

Protons = 89

Neutrons = 142

Electrons = 89

Option C

Explanation:

Hello,

Were required to find the proton, neutron and electron of an element Y

The atomic mass of element Y is composed of the protons and neutrons while the atomic number is the exact amount of protons present in the element.

Element = ₈₉²³¹Y

Atomic number = 89

Number of protons = 89

Number of electrons = 89

Atomic mass = 231

Atomic mass = protons + neutrons

231 = 89 + neutrons

Neutrons = 231 - 89

Neutrons = 142

Therefore the number of protons is 89, number of neutrons is 142 and number of electrons is 89.

Note: for an electrically neutral atom, the number of protons must be equal to the number of electrons

In this experiment, the unknown copper chloride hydrate needs to be heated in order to remove the water molecules that are bound to the copper chloride compound. This process is called dehydration and it is necessary because we want to determine the exact mass of the anhydrous copper chloride compound.

By heating the sample, the water molecules are driven off and we are left with only the anhydrous copper chloride. This allows us to accurately measure the mass of the copper chloride compound without the interference of water molecules. Additionally, it is important to note that different hydrates have varying numbers of water molecules bound to them, so it is crucial to remove the water to obtain accurate and consistent results.

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Hey there !

Mass = 237 g

Volume 237 mL

Therefore:

Density = mass / Volume

D = 237 / 237

D = 1.0 g/mL

Hope this helps!

In a TLC experiment, the compound with the larger Rf value will elute faster. In the case of naphthalene and 1-bromonaphthalene, the 1-bromonaphthalene will elute faster and have a larger Rf value.

This is because 1-bromonaphthalene is more polar than naphthalene. Polar compounds have a stronger attraction to the polar stationary phase (such as the silica gel in TLC plates) and will interact more with it, resulting in a lower Rf value.

Naphthalene, on the other hand, is less polar and will have a weaker interaction with the stationary phase, allowing it to travel further and have a higher Rf value.

The polarity of a compound is determined by the presence of functional groups or atoms that create an uneven distribution of charge or electronegativity. In this case, the bromine atom in 1-bromonaphthalene increases its polarity compared to naphthalene, leading to a stronger interaction with the stationary phase.

In summary, the 1-bromonaphthalene will elute faster in a TLC experiment and have a larger Rf value compared to naphthalene due to its higher polarity resulting from the presence of a bromine atom.

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Answer:

Gravity

Explanation:

Answer:

The two conditions that can limit the usefulness of the kinetic-molecular theory in describing gas behavior are "high pressure" and "low temperatures". At low temperatures or high pressures, real gases deviate significantly from ideal gas behavior.

Explanation:

To solve this question we need to use the combined gas law:

sufix 1 reffears to the initial state and sufix 2 reffears to the final state. P is pressure, V volume and T temperature (in Kelvin). They are asking for the pressure at the final state (P2) and they give the initial conditions: P1= 1atm, V1=1L T1=25°C=298K and the final temperature T2=1000°C= 1273 K. They alse say that the Volume is fixed so V2=V1=1L. then we just have to substitute the values into the eqaution:

Then solve P2. P2 = 4.272 atm

The efficiency is 7/5

To find the efficiency of a diesel cycle, we need to consider the compression ratio (r) and the specific heat ratio (γ) of the air. Given that the air is an ideal gas with a constant Cp = 7/2R, we can proceed with the calculation.

The efficiency (η) of the diesel cycle is given by the formula:

η = 1 - (1/r^(γ-1))

First, let's calculate γ:

γ = Cp / Cv

Since we're assuming the air is ideal, we can use the relation γ = Cp / Cv = (7/2R) / (5/2R) = 7/5.

Now, we have γ = 7/5 and we need to find the compression ratio (r). The compression ratio is the ratio of the final volume (V2) to the initial volume (V1) in the diesel cycle.

Since we are not provided with volume values, we cannot calculate the compression ratio (r). Therefore, without the compression ratio, we cannot determine the efficiency of the diesel cycle in this case.

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Isomers are compounds that have the same molecular formula but different arranged differently of the atoms.

For example

So even if they have the same proportion of their atoms, the chemical identity is different

The answer is option B: no because more than one compound can have the same ratio of masses of elements if the atoms are arranged differently.

We need to add 0.6 liters of pure alcohol to the 6-liter solution to achieve a 50% alcohol content.

To solve this problem, we need to use the concept of mixing solutions. We can assume that we have x liters of pure alcohol to be added to the existing 6-liter solution, which is already 45% alcohol.

First, we can calculate the amount of alcohol in the existing solution. Since it is a 6-liter solution and 45% of it is alcohol, we can multiply 6 by 0.45 to get the amount of alcohol in the solution, which is 2.7 liters.

Next, we can write an equation based on the principle that the total amount of alcohol in the final solution must equal the sum of the amounts of alcohol in the original solution and the added pure alcohol. So, we have:

2.7 + x = 0.5(6 + x)

We can simplify this equation by first distributing 0.5 on the right side, which gives us:

2.7 + x = 3 + 0.5x

Next, we can subtract x from both sides to isolate the variable on one side:

2.7 = 3 - 0.5x

Subtracting 3 from both sides gives us:

-0.3 = -0.5x

Finally, we can solve for x by dividing both sides by -0.5:

x = 0.6

Therefore, we need to add 0.6 liters of pure alcohol to the existing 6-liter solution to obtain a final solution that is 50% alcohol.

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Answer:

Balanced Forces acting on an object will not change the object's motion. Unbalanced Forces acting on an object will change the objects motion

Explanation:

The balanced equation for the dissociation of PO43- is given by;PO43-(aq)  H2O(l) ⇌ HPO42-(aq)  OH-(aq)The phosphate ion, PO43-, reacts with water to form HPO42- (monohydrogen phosphate) and OH- ions.

The chemical equilibrium between these species is represented by the equation above. In the dissociation reaction of PO43- the phosphate ion reacts with water (H2O) to form monohydrogen phosphate ion (HPO42-) and hydroxide ion (OH-). The reaction can be described as;PO43-(aq)  H2O(l) ⇌ HPO42-(aq)  OH-(aq)where the reactants are on the left and products on the right. In the equation, the state of matter of each reactant or product is written in parenthesis after its chemical formula. In this reaction, the reactant PO43- is an aqueous solution, while H2O is a liquid.

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Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.

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Answer:

Thx Have a fantastic day! :)

Explanation:

Answer:

When light falls on a material, the energy in its photons can affect the atoms in the material. In some materials, such as metal, the atoms absorb some of the photons so light does not pass through them. In other materials, such as glass, the atoms cannot absorb the photons and light passes through them.

Explanation:

Hope this is good

Answer:

the answer is A, they are measured in kilograms

Heat required is mcΔT=100×0.39×50=1950 J

Solve any question of Thermodynamics with:-

The specific heat of the substance that requires 270 J of energy to raise the temperature is 2.57 J/g⁰C.

The specific heat capacity of the substance is calculated as follows;

Q = mcΔФ

where;

c = Q/mΔФ

c = (270) / (4.2 x 25)

c = 2.57 J/g⁰C

Thus, the specific heat of the substance that requires 270 J of energy to raise the temperature is 2.57 J/g⁰C.

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The Ka of an acid whose 0.265 M solution has a pH of 4.05 Need more information to solve.

To determine the Ka (acid dissociation constant) of an acid, we can use the pH of its solution. pH = -log[H+]

From the given information, we know that the pH of the solution is 4.05. Taking the antilog of both sides of the equation, we get:

[H+] = 10^(-pH)

[H+] = 10^(-4.05)

[H+] = 7.079 x 10^(-5) M

Since the concentration of the acid is the same as the concentration of H+ ions (assuming it's a monoprotic acid), we can use this concentration value to determine the Ka.

Ka = ([H+][A-]) / [HA]

Since we don't have the concentrations of the conjugate base (A-) and the undissociated acid (HA), we can't determine the exact value of Ka with the given information.

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Answer:

5.075moles

Explanation:

First get the molecular mass of beryllium which is 4g/mol.

Then input your given mass...

Formular for mole =mass/molecular mass

Mole=20.3g/4g/mol

=5.075moles

Answer:

7.71 ×10²⁴ atoms (3 s.f.)

Explanation:

Please see the attached picture for the full solution.

☆ or number of atoms, or fundamental units

(this is sometimes written as number of particles)

Further explanantion:

(☆:) Here, we are looking at the number molecules since H₂ is a molecule.

1 mole of a substance is the amount of substance which contains the same number of particles. Thus, when using Avogadro's Constant, the units that we are looking at follows the units of the question. Then, look at what the question is asking for and answer accordingly.

The 2nd picture shows an example of another molecule, H₂O.

Some other examples would be:

1 mole of Na (an atom) --- 6.022 ×10²³ atoms

1 mole of CO₂ (a molecule) --- 6.022 ×10²³ molecules

1 mole of Na+ --- 6.022 ×10²³ ions

Thus, if we look at the 2nd image again, we can say that 1 mole of H₂O contains 6.022 ×10²³ molecules since H₂O is a molecule. However, if the question is asking for the number of atoms, it is not right to say that there are 6.022 ×10²³ atoms. Instead, there are 1.2044 ×10²⁴ H atoms and 6.022 ×10²³ O atoms, giving us a total of 1.8066 ×10²⁴ atoms in 1 mole of H₂O.

Answer:

Mass of lead = 89.7 g

Explanation:

Given data:

Volume of lead = 7.91 cm³

Density of lead = 11.34 g/cm³

Mass of lead =  ?

Solution:

Formula:

d = m/v

d = density

m = mass

v = volume

Now we will put the values in formula.

11.34 g/cm³ = m/7.91 cm³

m = 11.34 g/cm³ × 7.91 cm³

m = 89.7 g