How many moles of ammonia are produced when 4. 8 moles of nitrogen react with hydrogen? N2 + 3H2 — 2NH3

In Chemistry, we always have to balance the equations, in many topics within the subject of Chemistry, it is required to do that, this is because we have to account for every atom in the reaction, on both sides, reactant and product, the same number of atoms that are on the reactants side must be on the products side. Therefore, the best answer for this question will be letter D

At pH 7.4, pyruvate exists in its anionic form, known as pyruvate anion or pyruvate ion structure is (CH3COCOO-).

The net reaction of glycolysis, including coefficients, can be summarized as follows:

Glucose + 2 ADP + 2 Pi + 2 NAD+ ⟶ 2 Pyruvate + 2 ATP + 2 NADH

Here are the values for the coefficients:

a = 2 (since 2 ADP molecules are consumed)

b = 2 (since 2 Pi molecules are consumed)

c = 2 (since 2 NAD+ molecules are consumed)

x = 2 (since 2 pyruvate molecules are produced)

y = 2 (since 2 ATP molecules are produced)

z = 2 (since 2 NADH molecules are produced)

To draw the structure of pyruvate at pH 7.4.

Pyruvate is a three-carbon molecule with the chemical formula C3H4O3.

At pH 7.4, pyruvate exists in its anionic form, known as pyruvate anion or pyruvate ion (CH3COCOO-).

Here is a simplified structural representation of pyruvate at pH 7.4:

In the structure, the carbon skeleton consists of three carbon atoms, with a carbonyl group (C=O) attached to one carbon and a carboxylate group (-COO-) attached to another carbon.

The remaining carbon is bonded to a hydrogen atom.

The negative charge (represented by the "-") is present on the oxygen atom, indicating the anionic form of pyruvate.

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The percent volume of acetone in the solution is 53.6%.

The total volume of the solution is 28.0 L, and 15.0 L of that is acetone. To find the percent volume of acetone, we can use the following formula:

percent volume = (volume of solute / total volume of solution) x 100%

Plugging in the values we have:

Therefore, the percent volume of acetone in the solution is 53.6%.

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The hydroxide concentration if the pH is 3.3 is 2 × 10⁻¹¹  M. Therefore, option B is correct.

given information,

pH = 3.3

To determine the hydroxide concentration (OH-) from the pH value, we can use the relationship between pH and pOH. The pOH is the negative logarithm of the hydroxide ion concentration. The equation relating pH, pOH, and the concentration of hydrogen ions (H⁺) and hydroxide ions (OH⁻) in water is as follows:

pH + pOH = 14

Given that the pH is 3.3, the pOH:

pOH = 14 - pH

pOH = 14 - 3.3

pOH = 10.7

OH- concentration = 10^(-pOH)

OH- concentration = 10^(-10.7)

Calculating this value gives us approximately 2.00 × 10⁻¹¹ M.

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The electron configuration of an atom or ion is the arrangement of electrons in the orbitals of the atom or ion. It is represented by a list of occupied atomic orbitals in order of increasing energy, with the number of electrons in each orbital given in superscript. The electron configuration of an atom or ion can be used to predict its chemical behavior and reactivity. It is determined by the number of protons in the nucleus, which determines the number of electrons in the atom or ion, and the arrangement of these electrons in the atomic orbitals. The electron configuration of an atom or ion is written using the Periodic Table and the principles of quantum mechanics.

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Answer:

in first picture pressure is low and in second picture the pressure is high

2ans in first picture air is

less amount

in second picture air is high amount

The half reaction for cell anode that include the phases of all species in chemical equation is 2Ag⁺ (aq) + Sn(s) ------> 2Ag(s) + Sn²⁺ (aq)

The Reduction half reaction (or cathode reaction):-

Ag⁺(aq)  +  e⁻  ---------> Ag(s)..........(1)

The Oxidation half reaction (or anode reaction) :-

Sn(s) --------> Sn²⁺(aq) + 2e⁻  ............(2)

Therefore, Overall reaction :-

2(1) + (2)

or, 2Ag⁺ (aq) + Sn(s)  --------> 2Ag(s) + Sn²⁺ (aq)

A Voltaic Cell (otherwise called a Galvanic Cell) is an electrochemical cell that utilizes unconstrained redox responses to produce power. It is made up of two distinct half-cells. A half-cell is made out of a cathode (a piece of metal, M) inside an answer containing Mn+ particles in which M is any erratic metal.

A voltaic cell produces power as a redox response happens. The half reaction reduction potentials can be used to determine a voltaic cell voltage. Batteries are made from voltaic cells and are a convenient way to get electricity.

Incomplete question :

A Voltaic Cell Is Based On The Reduction Of Ag+(Aq) To Ag(S) And The Oxidation Of Sn(S) To Sn2+(Aq). (A) Write Half-Reactions For the cell's anode. include the phases of all species in the chemical equation.

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The correct options that identify the abbreviation for cell potential and its units are:- E° and volts (V).

The abbreviation for cell potential is E°, where the superscript zero denotes standard conditions of temperature (298 K) and pressure (1 bar). The units of cell potential are volts (V) or millivolts (mV).
The abbreviation for cell potential is E° (also referred to as standard electrode potential). Its units are expressed in volts (V). The cell potential represents the difference in electrical potential between the two electrodes of an electrochemical cell, and it is a crucial factor in determining the feasibility and spontaneity of a redox reaction. Selecting the correct options involving E° and volts (V) would be the accurate choice.

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The given question is incomplete the complete question is

Now, we would like you to share your plant evaluations with Sandy Waters, President of Save the Shoreline. You will do this by writing Mr. Waters a letter. When writing your letter, be sure to use a traditional letter format. This means that your letter should include a greeting (Dear ________, ) a body, and a closing (Sincerely, _________). The body of your letter must include the following: an opening that describes the procedure for ranking plants all plant rankings evidence from the data to support plant rankings a closing that explains how plant rankings could protect the dunes As always, be sure to use complete sentences and proper punctuation, capitalization, and spelling.

Identification of plant includes scientific name and origin of species

Plant is the living thing that grow in the earth and that has a stem leaves and roots

Dear sandy water, the most common process of plant identification is by comparison and in this process the newly collected sample is compared with another collected and identified sample if all characteristics are same then name of sample can be determined

Your sincerely

With this information, we can conclude that identification of a sample includes providing the scientific name and origin of the species

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Answer:

Nice Profile Pic

Explanation:

Answer:

\(Density = 2.699g/mL\)

Explanation:

Given

\(Mass = 20.92g\)

\(Volume = 7.75mL\)

Required

Determine the density

Density is calculated using:

\(Density = \frac{Mass}{Volume}\)

Substitute values for Mass and Volume

\(Density = \frac{20.92g}{7.75mL}\)

\(Density = 2.699g/mL\) --- approximated

Hence, the density of the Aluminium is \(2.699g/mL\)

Answer: D- Alpha

Explanation:

Answer:

When baking soda is mixed with vinegar, something new is formed. The mixture quickly foams up with carbon dioxide gas. If enough vinegar is used, all of the baking soda can be made to react and disappear into the vinegar solution.

Explanation:

Answer:

1653.21 cm

Explanation:

volume formula of rectangular prism is volume times height times width

40.1 times 4.457 times 9.25 = 1653.21

Answer:

The volume of cuboid is 1653.21 cm³

Step-by-step explanation:

GIVEN :

TO FIND :

USING FORMULA :

\(\quad{\star{\underline{\boxed{\sf{V_{(cuboid)} = lbh}}}}}\)

SOLUTION :

Substituting all the given values in the formula to find the volume of cuboid :

\(\quad{\longrightarrow{\sf{V_{(cuboid)} = lbh}}}\)

\(\quad{\longrightarrow{\sf{V_{(cuboid)} = l \times b \times h}}}\)

\(\quad{\longrightarrow{\sf{V_{(cuboid)} = 40.1 \times 4.457 \times 9.25}}}\)

\(\quad{\longrightarrow{\sf{V_{(cuboid)} = 178.7275 \times 9.25}}}\)

\(\quad{\longrightarrow{\sf{V_{(cuboid)} = 1653.21272}}}\)

\(\quad{\longrightarrow{\sf{V_{(cuboid)} \approx 1653.21}}}\)

\(\quad{\star{\underline{\boxed{\sf{V_{(cuboid)} = 1653.21 \: {cm}^{3}}}}}}\)

Hence, the volume of cuboid is 1653.21 cm³.

Answer:high pressure system and cold fronts

Explanation:

High pressure develops in areas where air cools and sinks. This usually causes fair weather with cool temperatures and few clouds.

Cold fronts occur when warm air is pushed up into the atmosphere by colder air at the ground. These fronts tend to move faster than the other types of fronts and are associated with the most violent types of weather such as severe and super cell thunderstorms, although any type of front can produce these same storms. After a cold front passes it is common to have clear skies and a dramatic change in wind direction on top of the cooler air associated with the front itself.

the spacing between the lines of the diffraction grating is 1.200 × 10^-5 cm.

We can use the equation for the diffraction of light by a grating to determine the spacing between the lines of the grating:

d * sin(theta) = m * lambda

where d is the spacing between the lines of the grating, theta is the angle between the incident light and the diffracted light, m is the order of the bright fringe, and lambda is the wavelength of the light.

We know that the first-order bright fringe for the emission at wavelength 501.5 nm is located 21.90 cm from the central maximum. Since the central maximum occurs when theta = 0, we can use this information to find the angle of diffraction:

d * sin(theta) = m * lambda

d * sin(theta) = 1 * 501.5 nm

sin(theta) = (501.5 nm) / d

For the first-order bright fringe, m = 1, so we can substitute the given values and solve for d:

d * sin(theta) = m * lambda

d * sin(theta) = 501.5 nm

d = (501.5 nm) / sin(theta)

d = (501.5 nm) / sin(arctan(21.90 cm / 50.00 cm))

d = 1.200 × 10^-5 cm

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Answer:

Explanation:

8%

When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.

Chemical reactions known as precipitation reactions take place in aqueous solutions to produce precipitates. Moreover, chemical changes that occur inside the substances are a part of chemical processes.

Moreover, chemical reactions take place between two or even more chemical substances, known as reactants. As a result, the reactants might be solid, gaseous, or liquid in nature. When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.

Therefore, when a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.

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Answer:

the answer is 28.086amu

Explanation:

There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The average atomic mass of silicon is 28.086amu. sorry it took me so long.

Answer:

The noble gases are relatively nonreactive. In fact, they are the least reactive elements on the periodic table. This is because they have a complete valence shell. They have little tendency to gain or lose electrons.

Explanation:

Answer:

The answer is A. Thymus.

The negative value of heat suggests that there may have been some systematic error in the experiment. So, the heat of metal is cm = -25.43 J/g°C

First, we need to calculate the heat absorbed by the water:

qwater = mwater * cwater * ΔTwater

qwater = (50.0 g) * (4.184 J/g°C) * (44.10°C - 11.25°C)

qwater = 7052 J

Next, we need to calculate the heat released by the metal:

qmetal = cm * mm * ΔTmetal

qmetal = cm * (5.00 g) * (44.10°C - 99.58°C)

qmetal = -cm * 277.5 J/g

Since qwater + qmetal = 0, we have:

qmetal = -qwater

cm * 277.5 J/g = -7052 J

cm = -7052 J / (277.5 J/g)

cm = -25.43 J/g°C

We obtained a negative value for the specific heat of the metal, which is not physically meaningful. This suggests that there may have been some systematic error in the experiment.

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Answer:

Wavelength (λ) = 1.875 × 10⁻⁶ m

Explanation:

Given:

Energy (e) =  1.06 × 10⁻¹⁹ J

Find:

Wavelength (λ) = ?

Computation:

e = hc / λ

λ = hc / e

where c = 3 × 10⁸

Planck's constant (h) = 6.625 × 10⁻³⁴

So,

Wavelength (λ) = (6.625 × 10⁻³⁴)(3 × 10⁸) / (1.06 × 10⁻¹⁹)

1. Wavelength (λ) = 1.875 × 10⁻⁶ m

2. Given n = 4 to n = 3 both are integer not fraction so, electron is quantize

Answer:39+30

Explanation:

Answer:

The nitrogen atom shares three bonding pairs and has one lone pair and has a total of 5 valence electrons.

Explanation:

Nitrogen - in its molecular elemental form, has an oxidation number of 0.

The buffered solution that would be more resistant to pH change when the strong acid or the strong base is added is the buffer b - acidic buffer.

The acidic buffer will be the most resistant to the pH change when the both of the concentrations of the acid and the base are equal. The Acid buffer contains the acidic pH and which is prepared by the mixing of the weak acid and its salt with the strong base.

The basic buffer has the basic pH and which is prepared by the mixing of the weak base and its salt with the strong acid. Therefore, the buffer will be more resistant to the change in the pH.

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This question is incomplete, the complete question is :

which buffered solution, buffer a or buffer b, would be more resistant to ph change when a strong acid or a strong base is added? justify your answer.

buffer a - basic buffer

buffer b - acidic buffer

The V/Q (Ventilation/Perfusion) ratio of a normal upright lung is 0.8, which indicates that ventilation is less than perfusion.

The V/Q ratio is a measure of the ratio between the amount of ventilation (airflow) reaching the alveoli of the lungs and the amount of blood perfusion (blood flow) in the pulmonary capillaries. In a normal upright lung, the V/Q ratio is 0.8, which means that ventilation is less than perfusion.

Ventilation refers to the movement of air into and out of the alveoli, allowing for gas exchange. Perfusion, on the other hand, refers to the blood flow in the pulmonary capillaries, which carries deoxygenated blood to the lungs for oxygenation.

A V/Q ratio of 0.8 indicates that there is relatively less airflow (ventilation) compared to blood flow (perfusion) in the lung. This can occur in certain areas of the lung where blood flow is relatively high compared to the amount of air reaching those regions. Factors such as gravity and differences in regional blood flow can contribute to this imbalance in ventilation and perfusion.

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