Complete the sentence.

Atoms form chemical bonds to satisfy the
rule and to become

Answer:

107g

Explanation:

First convert the number of molecules to moles using avogadro's number.

There are 6.02 x 10^23 molecules in 1 mol.

3.8 x 10^24 molecules NH3 ÷ 6.02 x 10^23 molecules / mol

= 6.31 mol NH3

Now that we have moles of NH3 we can multiply it by NH3's molecular mass.

NH3 molecular mass = Mass of N + Mass of H x 3

14.007g/mol + 1.008g/mol * 3

= 17.031 g NH3/ mol

6.31 mol NH3 * 17.031 g NH3 / mol

= 107g NH3

Answer:

36.02g bbbbbbbbbbb hbbnjkkkj

Answer:

36.02g

Explanation:

Hope this helps!

In dessert presentation one important aspect to consider is the visual appeal and aesthetics of the dessert.

The presentation of a dessert plays a crucial role in creating an enticing and memorable dining experience. The appearance of the dessert can greatly impact the perception and anticipation of its taste and quality. Therefore, attention should be given to factors such as color, texture, arrangement, and garnishments. For instance, color coordination is important to create an appealing visual impact. Harmonious color combinations can make the dessert more visually appealing. Additionally, textures should be varied to add interest and dimension to the presentation, such as incorporating crunchy elements with smooth components. Garnishments and decorations should be carefully chosen to complement the flavors and add a touch of elegance or playfulness, depending on the style and theme of the dessert. They can include edible flowers, chocolate shavings, fruit slices, or artistic drizzles of sauce. By considering the visual appeal in dessert presentation, it enhances the overall dining experience and creates an irresistible desire to indulge in the dessert.

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Answer:

option C is correct

Explanation:

Answer:

Under normal conditions, a magnetic material like iron doesn't behave like a magnet because the domains don't have a preferred direction of alignment. On the other hand, the domains of a magnet (or a magnetized iron) are all aligned in s specific direction.

Explanation:

Answer:

\(\boxed {\boxed {\sf V_2=75 \ mL}}\)

Explanation:

Since the pressure is constant, the only variables we need to work with are temperature and volume. We will use Charles's Law, which states the volume of a gas is directly proportional to the temperature. The formula is:

\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)

Originally, the gas was 50 milliliters at 20 degrees celsius. Substitute these values into the left side of the equation.

\(\frac{50 \ mL}{20 \textdegree C}=\frac{ V_2}{T_2}\)

We don't know the volume of the new gas, but we know the temperature was changed to 30 degrees celsius.

\(\frac{50 \ mL}{20 \textdegree C}=\frac{ V_2}{30 \textdegree C}\)

Since we are solving for the new volume, we must isolate the variable. It is being divided by 30 °Cand the inverse of division is muliplication. Multiply both sides by 30 °C.

\(30 \textdegree C*\frac{50 \ mL}{20 \textdegree C}=\frac{ V_2}{30 \textdegree C}* 30 \textdegree C\)

\(30 \textdegree C*\frac{50 \ mL}{20 \textdegree C}= V_2\)

The units of degrees celsius cancel, so we are left with milliliters as the units.

\(30*\frac{50 \ mL}{20}= V_2\)

\(\frac{1500 \ mL}{20}= V_2\)

\(75 \ mL=V_2\)

The new volume of the gas is 75 milliliters.

Answer:

it was stable because of it was in Potential energy and unstable because it was in kinetic energy or vice Versa. im somehow confused

Answer:55ml

Explanation:

Answer:

Oxidation is the loss of electrons or an increase in the oxidation state of an atom, an ion, or of certain atoms in a molecule. Reduction is the gain of electrons or a decrease in the oxidation state of an atom, an ion, or of certain atoms in a molecule.

Explanation:

To solve such this we must know the concept of redox reaction. Therefore, The cause of rejection of classical concept of oxidation and reduction reaction is in any process, oxidation can occur only if reduction is also taking place side by side and vice versa.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Oxidation and reduction reaction involves gain of electron and loss of electron simultaneously. This type of reaction is called redox reaction. The cause of rejection of classical concept of oxidation and reduction reaction is in any process, oxidation can occur only if reduction is also taking place side by side and vice versa.

Therefore, the cause of rejection of classical concept of oxidation and reduction reaction is in any process, oxidation can occur only if reduction is also taking place side by side and vice versa.

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The mass of gallium that can be formed from the reaction of 198 g of strontium with excess molten gallium (III) nitrate is 105 g (Option C)

The mass of gallium that can be formed from the reaction can be obtained as follow:

3Sr + 2Ga(NO₃)₃ → 3Sr(NO₃)₂ + 2Ga

From the balanced equation above,

262.86 g of Sr reacted to form 139.44 g of Ga

Therefore,

198 g of CrCl₂ will react to form = (198 × 139.44 ) / 246.86 = 105 g of Ga

Thus, the mass of Ga formed is 105 g (Option C)

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A. n = 105 lines/mm = 105000 lines/m

d*sin θ  = m*λ

(1/105000) * sin θ = 1*498*10^-9 ⇒     θ =  3.0 degree

Also  (1/105000) * sin θ = 1*569*10^-9 ⇒     θ =  3.43 degree

Δθ = 3.43° – 3.0°

Δθ = 0.43°

b) Chromatic Resolving power, R = λ / Δλ

λ  / Δλ  =  m (width) n

589 /0.59 = 2 (width) (105000)

Width = 4.75 mm

Diffraction gratings can split beams of different wavelengths into a spectrum of related lines through the principle of diffraction. In certain directions, only waves of certain wavelengths have obtained the rest are destroyed by their respective interference. other.

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Answer:

A. hydrolysis reaction.

Explanation:

Chemical Reactions.

First, let's review each concept of the group of answer choices:

- hydrolysis: is a reaction in which the net reaction is an organic compound reacting with water to give either two molar equivalents of a single product or more than one product.

- redox: is a type of chemical reaction that involves a transfer of electrons between two species.

- combustion: is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat.

- neutralization: is a reaction that occurs when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

The problem is asking for the reaction that removes a phosphate group from ATP, so let's see the structure of ATP with one phosphate group:

What is enclosed in the red box is the phosphate group.

The reaction that removes this phosphate group represents a rupture of the structure and based on the logic of the definitions of the given concepts, the answer would be that the reaction to remove one phosphate group from ATP is A. hydrolysis reaction. This reaction looks like this:

ATP + water (H2O) -> ADP + Pi,

where ADP is the same molecule of ATP but it has two phosphate groups and Pi is the phosphate group removed.

One example of particles that can be drawn closer to occupy a smaller volume is a gas.

In the gaseous state, particles have high kinetic energy and are not strongly attracted to each other. They move freely and randomly, colliding with each other and the container walls.

Since there are minimal intermolecular forces holding them together, gas particles can be compressed or drawn closer together by reducing the volume of the container.

By decreasing the volume of a gas, such as by compressing it in a cylinder or container, the particles have less space to move around. They collide with each other more frequently, increasing the frequency of intermolecular collisions. As a result, the gas particles are drawn closer together, and the overall volume occupied by the gas decreases.

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The area of a kitchen in a house is observed to change the strip of paper turned the darkest color, while that of a bathroom changed it the least.

The darkest color represents the dust and the presence of smoke in a specific area of your home. A kitchen has smoke and dust may come from various activities. The area where you observed the strip of paper change in color the least is an area in your house where there is no or less dust and smoke.

Smoke is a heterogenous mixture which contain dust and many other kinds of particles. Dust can come from many sources such as dirt, skin cells, fabric fibers, books, carpet, rugs, upholstered furniture, fireplaces, pets and many other things. Smoke can come from cooking or burning candles. However, you can reduce dust in your house by cleaning regularly and using an air purifier.

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First, we have to calculate the molecular weights of each molecule:

Then, we have to calculate the number of grams of water. We can calculate them because the process of evaporation lets us know the water amount that was retired:

Then, we're gonna convert the grams of sodium carbonate alone (30.2 g) and the grams of water to moles:

It means that the mole relation is 1:1 approx, as it is the same amount for both. Then, the formula is going to be:

It means that the answer is A.

The equation shows reactants to a neutralization reaction.

Ca²⁺ + OH⁻ → H⁺ + NO⁻. Here H binds with OH⁻ to make water. So the option c is correct.

As the answer to the question is cleared from these reactions. Firstly calcium hydroxide combines with nitric acid to form the products as follows;

Ca(OH)₂ + 2HNO₃ → Ca(NO₃)₂ + 2H₂O

Now the reaction between ionic species will be as follows

Ca²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ → Ca²⁺ + 2NO₃⁻ + 2H₂O

Hence OH⁻ combines with  H⁺  to make  H₂O(water)  

OH⁻ + H⁺ → H₂O

H⁺ binds with OH⁻ to make water

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The warm and the cool air masses affects the formation of clouds and precipitation.

Warm and cool air masses can affect cloud formation. Clouds are formed when water vapor in the atmosphere rises and cools, condensing into tiny water droplets or ice crystals. The type and amount of clouds that form can be influenced by the temperature and moisture content of the air masses.

In general, the interaction between warm and cool air masses can result in cloud formation and precipitation.

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The reactions in which flow of heat takes place into the system is known as endothermic process.

Heat flow is a process in which transfer of heat takes place from one system to other or from outside to inside or vice-versa.

In in any chemical reaction for the completion of reaction if we have to absorb heat or flow of heat takes place from the outside into the system then that reaction is known as endothermic reaction.

Hence resultant process will be endothermic.

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Answer D. endothemic

Explanation: just took the quiz

Normal Concentration = 18.09 moles/L Standard Deviation = 1.89 moles/L

The capacity for sustained attention on a single thing, activity, or work without being sidetracked is known as concentration. It is the key to success in most endeavors, as it requires a person to ignore any extraneous thoughts, feelings, or stimuli and instead focus on the task at hand. Concentration is a mental skill that can be developed and improved with practice, such as with mindfulness, meditation, and various cognitive exercises. Concentration can also be adversely affected by poor physical health, lack of sleep, and stress, so it is important to maintain a healthy lifestyle if one wants to stay focused.
Student | Weight (g) | Volume (L) | Concentration (moles/L)
1 | 5.0 | 0.25 | 19.82
2 | 8.0 | 0.50 | 15.89
3 | 4.0 | 0.20 | 20.23
4 | 7.0 | 0.30 | 18.52
5 | 6.0 | 0.40 | 16.96

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The methyl groups in this isomer are placed at the 1,2-positions, giving the nitro group three possible positions: 3, 4, or 5.

We can identify the isomers of xylene (dimethylbenzene) as follows:
Compound A is the para isomer, as it produces just one product upon nitration. In this case, the methyl groups are positioned at the 1,4-positions, which leaves only one possible position for the nitro group.
Compound B is the meta isomer, as it produces a mixture of two products upon nitration. Here, the methyl groups are located at the 1,3-positions, allowing the nitro group to occupy either the 2 or 5 positions.
Compound C is the ortho isomer, as it produces a mixture of three products upon nitration.

Constitutional isomers are types of structural isomers with the same chemical formula but distinct bonding patterns and structures. Counting the number of carbon atoms and the degree is the simple method for determining a constitutional isomer. Stereoisomers are isomers with the same composition but a different orientation in space. It comes in diastereomers and enantiomers varieties. Enantiomers create the non-superimposable mirror images. Although diastereomers cannot be superimposed, they are not mirror images.

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Alright, let's take it step by step!

(a) When you mix water with different temperatures, the final temperature is like a weighted average. Imagine you have `v` liters of water at temperature `T` and `u` liters of water at temperature `S`. The amount of thermal energy in the first batch is `v*T` and in the second batch it's `u*S`. When you combine them, the total thermal energy is `v*T + u*S`. Since the total volume is now `v + u`, the average energy per liter (which is the final temperature) is `(v*T + u*S) / (v + u)`.

In equation form:

Final Temperature, F = (v*T + u*S) / (v + u).

(b) Now let's move to the changing volumes and temperatures. Let `v(t)` be the volume at time `t`, and `T(t)` the temperature at time `t`. Let's say that in `Gt` seconds, `Gu` gallons of water are added at temperature `S`. We’ll assume that 1 gallon is the same as 1 liter for simplicity, though in reality they are slightly different.

The new volume after `Gt` seconds is `v(t) + Gu`, and the total thermal energy is `v(t)*T(t) + Gu*S`. The new average temperature is:

T(t+Gt) = (v(t)*T(t) + Gu*S) / (v(t) + Gu).

Now, T(t+Gt) - T(t) = [(v(t)*T(t) + Gu*S) / (v(t) + Gu)] - T(t).

Now, let's think about water pouring at a constant rate. Let's use the limit definition of the derivative. Instead of `Gu` gallons in `Gt` seconds, let's say a tiny amount of water `du` is added in a tiny amount of time `dt`. So, `du/dt` is the rate at which water is poured into the urn.

Using the limit definition:

dT/dt = lim (dt -> 0) [(v(t)*T(t) + du*S) / (v(t) + du) - T(t)] / dt

     = [(v(t)*T(t) + du*S) / (v(t) + du) - T(t)]' (derivative with respect to t)

     = [v'(t)*T(t) + v(t)*T'(t) + du/dt*S - v'(t)*T(t) - v(t)*T'(t)] / (v(t) + du) (using product rule)

     = (du/dt*S) / (v(t) + du).

As dt approaches 0, du becomes very small, and thus we can ignore it in comparison to v(t), so:

dT/dt ≈ (du/dt*S) / v(t).

This is the rate of change of temperature with respect to time, in terms of the rate at which water is poured, the temperature at which it is poured, and the volume of water already in the urn.

The pH range between 0.5 and 2.5 is optimal for the activity of pepsin, a common enzyme present in the stomach.

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The acetic acid in vinegar has a molar concentration of 0.530 M.

When the chemical formula and molecular weight of the drug are known, the concentration can be calculated. Any substance's molar concentration in a solution can be simply calculated.

Molar concentration is the measurement of a solution's concentration as the No.  of moles of a solute inside a liter of a solution.

The following equation can be used to compute the concentration or volume of the solutions:

M₁V₁ = M₂V₂

where M1, V1, M2, and V2 represent the volume and concentration of the concentrated & diluted solution, respectively.

Given a NaOH concentration, M1 = 0.1931 M (which should be necessary to apply the broth dilution),

and to calculate the molar concentration of acetic acid)

The volume of NaOH, V1, is 27.48 mL.

V2 = acetic acid volume in milliliters

In equation (1), substitute the values of V1, M1, and V2 as well as volume:

(0.1931) X (27.48) = (10) X (V₂)

V₂ = 0.530 M

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Answer:

I think it is 20

Explanation:

Answer: 20, Hope this helped!

Explanation:

The amplitudes of sound waves from these sources in order from greatest to least is chainsaw, diesel truck, rustling leaves.

A sound wave is described as the pattern of disturbance caused by the movement of energy traveling through a medium (such as air, water or any other liquid or solid matter) as it propagates away from the source of the sound.

The amplitude of the sound wave is described as the maximum displacement of the particles from their resting position. That means that higher the amplitude equals high sound.

So the sound of a chainsaw is high, hence its amplitude will be great and after that the amplitude of diesel truck is high and rustling leaves have the lowest amplitude.

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Both Al3Ti and LiAl fit the general size requirements for substitutional alloys, as they have similar atomic radii. (A,B)

Al3Ti consists of aluminum and titanium atoms, which have atomic radii of 143pm and 147pm respectively, which are fairly close in size.

Similarly, LiAl consists of aluminum and lithium atoms, which have atomic radii of 143pm and 152pm respectively, which are also close in size. Because the atomic radii of both alloys are close, the atoms are able to fit into the lattice structure of the other atoms.

This allows for the atoms to substitute for each other, making for a substitutional alloy.

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Answer:

There will be the formation of a Common salt (NaCl) and Mg(OH)2 which is a base after the reaction between the two chemicals

The pH of a 3.97x10^-2 m aqueous solution of hx if its ka is equal to 3.0x10^-3 is 1.96.

pH is defined as the concentration of hydrogen ion in the solution.

Given,

Ka = 3.0x10^-3

As we know that,

Ka =( [H+] [X-])/[HX]

Let the concentration of [H+] = [X-] = x at any time t.

At the same time, concentration of [HX] = (0.0397-x)

Ka = x^2/(0.0397-x)

3.0x10^-3 = x^2/(0.0397-x)

x^2 = 0.1191 × 10^-3

x = 1.09×10^(-2)

x = 0.0109

The concentration of [H+] = 0.0109.

As we know that,

pH = -log[H+]

pH = -log(0.0109)

pH = -(-1.96)

pH = 1.96

Thus, we calculated that the value of pH of a 3.97x10^-2 m aqueous solution of hx if its ka is equal to 3.0x10^-3 is 1.96.

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The volume of the gas changed by approximately 0.280 m³ during the process.

To find the change in volume of the gas during the process, we can use the equation:

ΔQ = nCvΔT

where: ΔQ is the heat absorbed (3870 J),

n is the number of moles of the gas (7.70 mol),

Cv is the molar heat capacity at constant volume,

ΔT is the change in temperature (24.2 °C = 24.2 K).

Since the change in internal energy is zero (ΔU = 0), we know that ΔU = ΔQ + ΔW, where ΔW is the work done by the gas. In this case, since the process is at constant pressure, we can write ΔW = PΔV, where P is the pressure (1.62E+5 Pa) and ΔV is the change in volume.

Now, using the ideal gas law, we can express ΔV in terms of ΔT:

ΔV = (nRΔT) / P

where R is the ideal gas constant (8.314 J/(mol·K)).

Substituting the given values into the equations:

ΔQ = nCvΔT

3870 J = 7.70 mol × Cv × 24.2 K

From the equation ΔV = (nRΔT) / P, we have:

ΔV = (7.70 mol × 8.314 J/(mol·K) × 24.2 K) / (1.62E+5 Pa)

Simplifying the equations and performing the calculations:

ΔQ = nCvΔT

3870 J = 7.70 mol × Cv × 24.2 K

Cv ≈ 2.00 J/(mol·K) (calculated from the above equation)

ΔV = (7.70 mol × 8.314 J/(mol·K) × 24.2 K) / (1.62E+5 Pa)

ΔV ≈ 0.280 m³

Therefore, the volume of the gas changed by approximately 0.280 m³ during this process.

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