What is the maximum mass of ammonia that can be formed when 43.00 grams of nitrogen gas reacts with 10.62 grams of hydrogen gas according to the following equation? Please round your answer to the nearest 0.01 gram.

N2 + 3 H2 à 2 NH3
* thank you so much in advance!

According to the graph, only the reactant A was present at the beginning of the reaction.

The graph shows the concentration for the reactant A and the product that is A2. In this graph, the concentration is displayed on the vertical axis, while the horizontal axis shows the time.

In general terms, it can be observed that at the beginning only the reactant A is present, but as the reaction occurs the concentration of this reactant decreases, while the concentration of the product A2 increases.

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According to the graph, the concentration of A decreases with time before leveling out. Option A.

The reaction shown is that of a reversible reaction in which A is on the reactant's side and A2 is on the product's side.

At the beginning of the reaction, the concentration of A decreases as a result of forming A2. In other words, the concentration of A2 increases just as that of A decreases.

With time, the reaction reaches an equilibrium during which the rate of formation of A equals the rate of formation of A2. At this point, the concentration of A levels off.

In summary, the concentration of A first decreases before leveling off.

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The number of oxygen atoms in each formula unit of lead nitrite is equal to four.

A formula unit can be used to represent the lowest whole number ratio of ions in an ionic compound. The formula mass of an ionic compound is equal to the sum of the atomic masses of the ions in the formula unit.

A formula unit can be described as an empirical formula of any covalent or ionic compound that can be used as an independent entity for stoichiometric calculations.

Given the chemical formula of the Lead(II) nitrite is Pb(NO₂)₂. The number of oxygen atoms in each formula unit is four.

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Answer:

The mole fraction is the number of moles of something divided by the number of total moles present. First, let us work out the number of moles of KCl present. A 26.3% w/w solution would contain 26.3 g of KCl per 100 g of solution. Hence, 26.3 g of KCl is 26.374.5513 = 0.353 moles

Explanation:

please mark me as brainliest

Answer:

protons and neutrons are the answer

An element with atomic number 119 will be an alkali metal with a +1 oxidation state which makes it highly electronegative.

This is described as the tendency of the atom of an element to attract electrons so as to form a bond. This is done so that the elements can achieve a stable octet configuration.

On the other hand, if an element with atomic number 119 was present based on it’s likely position on the periodic table then it will most likely be an alkali metal with a +1 oxidation state and will be highly electronegative as it requires the loss of only one electron in other to achieve a stable configuration thereby making it highly reactive.

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The equation for the combustion reaction of ethylene (C2H4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O) is:

C2H4 + 3O2 -> 2CO2 + 2H2O

The balanced equation represents the stoichiometry of the combustion reaction. Here is the interpretation of the equation:

Molecular Interpretation:

1 molecule of ethylene reacts with 3 molecules of oxygen to produce 2 molecules of carbon dioxide and 2 molecules of water.

Molar Interpretation:

1 mole of ethylene reacts with 3 moles of oxygen to produce 2 moles of carbon dioxide and 2 moles of water.

Mass Interpretation:

The molar masses of the compounds involved are:

C2H4: 2(12.01 g/mol) + 4(1.01 g/mol) = 28.05 g/mol

O2: 2(16.00 g/mol) = 32.00 g/mol

CO2: 1(12.01 g/mol) + 2(16.00 g/mol) = 44.01 g/mol

H2O: 2(1.01 g/mol) + 16.00 g/mol = 18.02 g/mol

Therefore, when 28.05 grams of ethylene react with 96.00 grams of oxygen, they produce 88.02 grams of carbon dioxide and 36.04 grams of water.

The balanced equation C2H4 + 3O2 -> 2CO2 + 2H2O represents the combustion of ethylene with oxygen, resulting in the formation of carbon dioxide and water. The equation can be interpreted on a molecular, molar, and mass basis to understand the stoichiometry and quantities involved in the reaction. This information is useful for calculating reactant and product amounts, as well as for understanding the composition and yields of the combustion products.

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Answer:

(i think) it is A difference in 1 unit is a 10X difference in concentration For example; a liquid with pH of 3 is 10X more acidic than a liquid with a pH of 4. Therefore, a liquid with a pH of 3 is stronger.

Explanation:

109.1 mL of 0.3850 M HCl is required to neutralize 60.00 mL of 0.7000 M KOH.

To calculate the volume of 0.3850 M HCl required to neutralize 60.00 mL of 0.7000 M KOH, the following is the solution:

First, calculate the amount of KOH that reacted with HCl using the following formula: Moles of KOH = Molarity x Volume = 0.7000 M x 60.00 mL = 0.04200 mol.

Now that the amount of KOH has been determined, it is time to determine how much HCl is needed. Since KOH and HCl react in a 1:1 ratio, the number of moles of HCl required is also 0.04200 mol.

Volume of HCl = Moles of HCl / Molarity. Hence, the volume of 0.3850 M HCl required to neutralize 60.00 mL of 0.7000 M KOH = 0.04200 mol / 0.3850 M = 109.1 mL.

Therefore, 109.1 mL of 0.3850 M HCl is required to neutralize 60.00 mL of 0.7000 M KOH.

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One of these neurotransmitters, dopamine, is released in the reward area of the brain and results in pleasurable feelings and an uplifted mood. More nicotine is required to feel good the more you smoke.

The nightshade plant family naturally produces nicotine, an alkaloid that is widely used recreationally as a stimulant and anxiolytic. It is a medication meant to decrease withdrawal symptoms in smokers who desire to quit.

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Answer:

Dog

Zebra

Sing

Yoga

Gaming

Cooking

Answer:

Surface tension is an important factor in the phenomenon of capillarity . Surface tension has the dimension of force per unit length, or of energy per unit area.

Explanation:

Answer:

0.07 g/s.

Explanation:

From the question given above, the following data were obtained:

Mass lost = 9.85 g

Time taken = 2 min 30 s

Mean rate =?

Next, we shall convert 2 min 30 s to seconds (s). This can be obtained as follow:

1 min = 60 s

Thus,

2 min = 2 × 60 = 120 s

Therefore,

2 min 30 s = 120 s + 30 s = 150 s

Finally, we shall determine the mean rate of the reaction. This can be obtained as illustrated below:

Mass lost = 9.85 g

Time taken = 150 s

Mean rate =?

Mean rate = mass lost / time taken

Mean rate = 9.85 / 150

Mean rate = 0.07 g/s

Therefore, the mean rate of the reaction is 0.07 g/s

a) Melting: An example of melting that occurs in our everyday life is when we heat butter on a stovetop.

b) Freezing: Freezing is the process in which a liquid transforms into a solid upon cooling.

c) Condensation: One example of condensation that we encounter regularly is when water droplets form on the surface of a cold drink on a hot day.

d) Evaporation: Evaporation is the process by which a liquid transforms into a gas or vapor.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state.

a) Melting:  Butter is a solid at room temperature, but when heat is applied, it melts into a liquid. This change is a result of the increase in temperature, which provides enough energy to overcome the intermolecular forces holding the butter molecules together.

b) Freezing:Eventually, the temperature reaches the freezing point of water (0°C or 32°F), at which the water molecules slow down and arrange themselves into a regular, crystalline structure. This transformation from a liquid to a solid state is accompanied by the release of heat energy.

c) Condensation: As the temperature decreases, the air's capacity to hold moisture decreases, causing the water vapor in the air to condense into liquid water droplets. This process occurs due to the transfer of heat energy from the warm air to the cold surface, leading to the saturation of the air and the conversion of water vapor into liquid form.

d) Evaporation:  As the sun's heat energy is absorbed by the water molecules on the clothes' surface, their kinetic energy increases, causing them to break free from the liquid phase and escape into the surrounding air as water vapor. This process occurs because the molecules at the liquid surface with sufficient energy can overcome the attractive forces within the liquid and enter the gas phase.

e) Sublimation: Sublimation refers to the transformation of a substance directly from a solid to a gas without passing through the liquid state. An example of sublimation is the process of dry ice (solid carbon dioxide) converting into carbon dioxide gas.

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The statement which have correct evidence supporting above is that electrical energy can be changed or converted into other form of energy.

Therefore, Option A is the correct option.

Electrical energy is defined as the energy which is derived from electric kinetic energy or potential energy of the charged particles.

In general, it is referred as the amount of energy which has been changed from electric potential energy. We can also define electrical energy as the energy which is generated by the movement of electrons from one position to another position. The movement of charged particles or electron through/along a medium which constitute current or electricity.

The SI unit of Electrical Energy is watt-second.

The commercial unit of Electrical energy is kilowatt-hour.

1Kwh = 3.6 × 10^6 J.

Some example of Conversion of Electrical energy are as follow:

Fan - The electrical energy is converted into mechanical energy and heat energy.

Therefore, the electrical energy in light bulb is converted into light energy and heat energy.

Thus, we concluded that the electrical energy can be changed or converted into other form of energy.

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Entropy is a measurable physical characteristic and a scientific notion that is frequently connected to a condition of disorder, unpredictability, or uncertainty.

Molar enthalpy is the amount of energy per mole. Enthalpy is a thermodynamic quantity that corresponds to a system's total heat content according to this definition. It is equivalent to the system's internal energy plus the sum of the pressure and volume products. This value's unit of measurement is KJ/mol.

Entropy is assumed to be 1 kB/particle

kB: Boltzmann Constant = 1.3806*10^(23)/JK

Entropy, S = 1.3806*10^(-23) /JK

We are aware that S = Q/T

provided T = 83.85 k

and that Q = S*T = S*83.85k = 1.157*10(-21) J / particle.

Since 1 mole = 6.022x1023 particles of heat energy,

the formula for an is 1.157*10(-21)*6.022*10^23, which is 6.967*102 J/mole.

Argon's molar enthalpy is Q/n,

where n is the number of moles,

and ΔH equals 0.6967 KJ/mole.

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83.3% yield

Explanation:

First, we need to convert 240 g of \(Fe_{2}O_{3}\) into moles:

\(240 \:g \:Fe_{2}O_{3} \:\times(\frac{1\:\text{mol}\:Fe_{2}O_{3}}{159.69\: \text {g}\:Fe_{2}O_{3}})\)

\(=1.50 \:\text{mol}\:Fe_{2}O_{3}\)

Next, find the theoretical Fe yield using molar ratios.

\(1.50 \: \text {mol} \: Fe_{2}O_{3}\: \times (\frac{2\: \text{mol} \: Fe}{1 \:\text{mol} \: Fe_{2}O_{3}})\)

\( = 3.00 \: \text{mol} \: Fe\)

Then convert this back into grams:

\(3.00 \: \text{mol} \:Fe \times (\frac{55.845 \: \text{g} \: Fe}{1 \: \text{mol} \: Fe}) = 168 \: \text{g} \: Fe\)

Note that actual yield is only 140 g Fe so percentage yield is

\(\dfrac{140\:\text{g}\:Fe}{168\:\text{g}\:Fe} \times 100\)%= 83.3%

83.3%

The answer is 83.3%

Answer:

thats cool mate

Explanation:

hope ya have a good day, im answering just for the points tbh

Answer:

ello thats great free points then >:3

-XxanimexX

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question we have

\(density = \frac{12}{6} \\ \)

We have the final answer as

Hope this helps you

The minimum energy needed by the photons to react with silver bromide in the film is approximately 57.9 kJ/mol. Then, the wavelength is 206 nm.

Wavelength of a wave is the distance between two consecutive crests or troughs of the wave.

To find the wavelength of the energy in nm, we can use the equation:

E = hc/λ

where E is the energy in joules, h is Planck's constant (6.626 x 10⁻³⁴ J s), c is the speed of light (2.998 x 10⁸ m/s), and λ is the wavelength in meters.

First, we need to convert the energy from kJ/mol to J/photon:

57.9 kJ/mol = 57.9 x 1000 J/mol / 6.02 x 10²³ mol^-1

= 9.626 x 10²⁰ J/photon

Now we can use the equation above to find the wavelength:

9.626 x 10²⁰ J/photon = (6.626 x 10⁻³⁴ J s)(2.998 x 10⁸ m/s) / λ

Solving for λ, we get:

λ = hc/E = (6.626 x 10⁻³⁴ J s)(2.998 x 10^8 m/s) / 9.626 x 10⁻²⁰J/photon

  = 2.06 x 10⁻⁷ m

Finally, we convert the wavelength from meters to nanometers:

λ = 2.06 x 10⁻⁷ m x (10⁻⁹ nm/m)

  = 206 nm

Therefore, the wavelength of the energy needed to react with silver bromide in 35 mm photographic film is approximately 206 nm.

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The neutral formula unit for the combination of calcium and NO₃⁻ is Ca(NO₃)₂. Calcium is a metal that belongs to group 2 of the periodic table, and it has a +2 charge. NO₃⁻ is a polyatomic ion that has a -1 charge.

When these two elements combine, they form an ionic compound through electrostatic attraction. The calcium cation and the nitrate anions combine in a 1:2 ratio to form the neutral compound Ca(NO₃)₂. This formula unit represents the simplest ratio of atoms in the compound and indicates that one calcium ion is combined with two nitrate ions.

So, the neutral formula unit for the combination of calcium (Ca) and nitrate (NO₃⁻) is Ca(NO₃)₂. In this compound, calcium has a charge of +2, while each nitrate ion has a charge of -1. To create a neutral formula unit, we need two nitrate ions for each calcium ion to balance the charges.

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Answer:

C.) Ozone layer

Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometers (6–10 miles) above Earth's surface and extends up to about 50 kilo- meters (31 miles) altitude. The stratospheric region with the highest ozone concentration is commonly known as the “ozone layer” (see Figure Q1-2).

The pH of the mixture can be calculated using the equation: pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution.

To find the [H+] in the mixture, we need to first calculate the individual [H+] values for each acid, using the equation for the dissociation of acids in water:

HBr → H+ + Br-

HClO4 → H+ + ClO4-

For HBr, the [H+] is equal to the concentration of HBr, since it dissociates completely. So [H+] for HBr is 0.020 M.

For HClO4, we need to use the acid dissociation constant (Ka) to calculate the [H+]. Ka for HClO4 is 7.5 x 10^-1, so:

Ka = [H+][ClO4-] / [HClO4]

[H+] = sqrt(Ka[HClO4]) = sqrt(7.5 x 10^-1 x 0.015) = 0.049 M

To find the total [H+] in the mixture, we add the [H+] values for HBr and HClO4:

[H+] total = [H+] HBr + [H+] HClO4 = 0.020 + 0.049 = 0.069 M

Finally, we can use the equation pH = -log[H+] to find the pH:

pH = -log(0.069) = 1.16

Therefore, the pH of the mixture is approximately 1.16.

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The half-life of the radioactive element is approximately 3.32 years.

The concept of half-life refers to the time it takes for half of the radioactive substance to decay. In this case, since the element loses 20% of its mass per year, we can calculate the half-life using the exponential decay formula.

If the substance loses 20% of its mass per year, it means that the remaining mass after each year is 80% (100% - 20%) of the previous year's mass. This can be expressed as a fraction: 0.8.

To find the number of years it takes for the mass to reduce to half, we can set up the following equation:

(0.8)^(number of years) = 0.5

Taking the logarithm of both sides, we have:

log(0.8) * (number of years) = log(0.5)

Solving for the number of years:

(number of years) = log(0.5) / log(0.8) ≈ 3.32 years

Therefore, the half-life of this radioactive element is approximately 3.32 years.

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Explanation:

2 KOH (aq) + H2SO4 (aq) →K2SO4 (aq) + 2 H2O (l)

The electrode can be used in conjunction with a dissolved oxygen meter to monitor oxygen levels in real-time and to control the oxygen supply to the culture medium to optimize growth conditions.

The redox potential indicator that detects the presence or absence of oxygen in the culture medium is called

"oxygen-sensitive electrode.

A redox potential indicator that detects the presence or absence of oxygen in the culture medium is known as an oxygen-sensitive electrode. It measures the partial pressure of oxygen (pO2) in a sample by transforming it into an electrical signal. It is made up of a platinum cathode and a silver anode, and it can be used in both aqueous and non-aqueous solutions.An oxygen-sensitive electrode is useful in a variety of applications, including fermentation processes and cell culture, where the presence or absence of oxygen affects the metabolic activity of the organisms in question. The electrode can be used in conjunction with a dissolved oxygen meter to monitor oxygen levels in real-time and to control the oxygen supply to the culture medium to optimize growth conditions.

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The most likely cause of earthquakes that occur in the area shown on the map is due to fault lines in the earth's crust.

Earthquakes are natural phenomena characterized by the shaking or trembling of the Earth's surface.

They occur due to the sudden release of energy in the Earth's crust along fault lines, which creates seismic waves that propagate through the Earth.

The Earth's crust is composed of several large tectonic plates that float on the semi-fluid layer of the Earth's mantle.

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