What amount of hydrogen gas would be necessary to to produce 14.0 mol NH3(g)(assuming there is enough nitrogen gas to complete the reaction)?

Answer:

B) They aren't different

Explanation:

1.5 is equal to 1.50.

Answer:

False

Explanation:

. What you’re describing is a displacement reaction.

Answer:

False, that is a single replacement reaction that you have described.

Explanation:

Answer:

Argon

Explanation:

The element that would most likely be a good substitute for neon is "argon".

These two elements belong to the noble gases in Group 18(8A) of the Periodic Table. They are inert gases - they do not react chemically with other substances.

Argon, as an inert gas is often used whenever an inert atmosphere is needed. Argon is used in incandescent light bulbs. It is used to stop oxygen from corroding the filament. It is also used by welders to protect weld area.

Argon is a good substitute for neon in this context because they possess some physical properties which are similar.

Answer:Ca

Explanation:

Yes, it is possible to identify the liquid, and the density of the liquid is closest to 0.889 g/cm³ so the liquid is most likely tetrahydrofuran.

To calculate the density of the unknown liquid, we use the formula:

Density = Mass / Volume

Substituting the given values, we get:

Density = 682. g / 0.767 L

Density = 888.5 g/L

Rounding to three significant digits, the density of the unknown liquid is 889 g/L.

Using the information provided in the question, we can compare the density of the unknown liquid to the known densities of the listed chemicals. The densities (in g/cm³) of the chemicals are:

Dimethyl sulfoxide: 1.092

Acetone: 0.790

Diethylamine: 0.707

Tetrahydrofuran: 0.889

Carbon tetrachloride: 1.594

Comparing the density of the unknown liquid to the known densities, we see that it is closest to the density of tetrahydrofuran, which is 0.889 g/cm³. Therefore, it is likely that the unknown liquid is tetrahydrofuran.

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Answer:

5.6L

Explanation:

16.0g. =?

(16.0×22.4)÷64.07

=5.5939

approximately 5.6L

The temperature at which 3.12 moles of P2O3 gas would occupy 67.5 L at a pressure of 1.135 atm is approximately 443 K (Kelvin).

To calculate the temperature of the P2O3 gas occupying 67.5 L, given that the pressure is 1.135 atm and the amount of gas is 3.12 moles, we can use the ideal gas law equation PV=nRT.Where P is pressure, V is volume, n is the amount of substance (in moles), R is the universal gas constant, and T is the temperature. Rearranging this equation to solve for T, we get:T = PV/nR Plugging in the given values for P, V, and n and the value of the gas constant R (0.08206 L·atm/mol·K), we get:T = (1.135 atm)(67.5 L)/(3.12 mol)(0.08206 L·atm/mol·K)Simplifying this expression, we get:T ≈ 443 K Note that it is important to use consistent units throughout the calculation. In this case, the pressure was given in atmospheres, the volume in liters, and the gas constant has units of L·atm/mol·K, so we were able to cancel out units of atm, L, and mol, leaving only units of Kelvin for the temperature.

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Answer:

About 14.45 seconds

Explanation:

If a object is going 4.5m/s and its destination is 65m then you need to divide.

65÷4.5 = 14.444444

due to the constant 4 you need to round 14.444 so it would be 14.45 seconds.

Accοrding tο the equatiοn 0.4006 mοl οf PF₃ will be required tο prοduce 27.5 grams οf PF₃.

Mοl is a unit οf measurement fοr the amοunt οf a substance. It is used tο measure the amοunt οf a particular element οr cοmpοund in a sample. Mοl is equal tο the number οf atοms, mοlecules, οr οther units in a sample. The size οf a mοl is determined by Avοgadrο's number, which is 6.022 x 10²³.

We first need tο calculate the mοlecular weight οf PF₃. This is dοne by adding up the atοmic masses οf the three atοms in the mοlecule.

                        P: 30.97 g/mοl

                            F: 18.99 g/mοl

Therefοre, PF₃ has a mοlecular weight οf:

                        30.97 + 18.99 + 18.99

                              = 68.95 g/mοl

Tο calculate the mοles οf PF₃ required tο prοduce 27.5 grams οf PF₃, we divide the mass οf PF₃ (27.5 g) by the mοlecular weight οf PF₃ (68.95 g/mοl):

                          27.5 g / 68.95 g/mοl

                        = 0.4006 mοl οf PF₃

Therefοre, 0.4006 mοl οf PF₃ will be required tο prοduce 27.5 grams οf PF₃,

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Answer:

Constant-volume molar heat capacity of argon is 12.47 J K ⁻¹mol⁻¹

Explanation:

Argon is a monoatomic gas that behaves as an ideal gas at 298K.

Using the first law of thermodinamics you can obtain:

Work, Q, for constant pressure molar heat capacity,CP:

CP = (5/2)R

For constant-volume molar heat capacity,CV:

CV = (3/2)R

That means:

2CP/5 = 2CV/3

3/5 = CV / CP

As CP of Argon is 20.79 J K ⁻¹mol⁻¹, CV will be:

3/5 = CV / CP

3/5 = CV / 20.79 J K ⁻¹mol⁻¹

12.47 J K ⁻¹mol⁻¹ = CV

Answer:

Average speed  = 68 mph

Explanation:

Given that,

Total distance traveled by the family, d = 340 miles

The family traveled 5 hours southeast.

We need to find her average speed. The speed of an object is given by the total distance covered divided by time taken. So,

\(v=\dfrac{d}{t}\)

Put all the values,

\(v=\dfrac{340}{5}\\\\v=68\ mph\)

So, her average speed is equal to 68 mph.

Based on the mass spectrum of a pure element represented above, the average atomic mass of the element is closest to  186.3 amu .

A mass spectrum is simply a plot of the \(\frac{m}{z}\) ratios of the ions present in a sample versus their intensities. Each peak in a mass spectrum represents a unique \(\frac{m}{z}\) component in the sample, and the heights of the peaks indicate the relative abundance of the various components in the sample.

explanation ,

The relative abundance of isotopes with atomic number masses 90 and 92 would have a weightage average less than 91. With the influence of the mass and abundance of the isotope with atomic number 94, the weightage average would be closer to 91.

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Complete question

Based on the mass spectrum of a pure element represented above, the average atomic mass of the element is closest to which of the following? (65% abundance of 187; 37% abundance of 185)

a) 185.7 amu

b) 186.0 amu

c) 186.3 amu

d) 186.9 amu

The number of moles of carbon in the original sample is 0.15 moles.

Let the formula of compound be CaHbOc.

The reaction when this compound undergoes combustion is as follows,

CaHbOc + O2 = CO2 + H2O

We are given that 4.50 g of compound releases 6.60 g of CO2 and 2.70 g of H2O.

First we have to calculate the moles of CO2 and H2O by dividing the given mass by their molar mass.

Moles of CO2 = 6.60/44 = 0.15 moles

Moles of H2O = 0.15 moles

The mass of carbon in CO2 = 0.15 x 12 = 1.80 g

The mass of carbon in CO2 is equal to the mass of carbon in the original sample.

Therefore, the number of moles of carbon in the original sample is 0.15 moles.

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Answer:

\((C_2H_5)_3N~+~H_2O~->~(C_2H_5)_3NH^+~+~OH^-\)

Explanation:

For this question, we have to remember that definition of acid and base in the Bronsted-Lowry theory:

Acid

A substance with the ability to produce a hydronium ion (\(H^+\)).

\(HA~->~H^+~+~A^-\)

Base

A substance with the ability to accepts a hydronium ion (\(H^+\)).

\(B~+~H^+->BH^+\)

If we check the reaction mechanism (figure 1). We can see that the lone pair of electrons in the "N" atom will remove an "H" from the water molecule producing a positive charge in the nitrogen and a hydroxyl group (\(OH^-\)).

With all this in mind, the net ionic equation would be:

\((C_2H_5)_3N~+~H_2O~->~(C_2H_5)_3NH^+~+~OH^-\)

I hope it helps!

Answer:

Products

Explanation:

The substances Al and Cl₂ can both be referred to as the product of the chemical action.

Products of a chemical reaction are usually found on the right hand side. They are the new substances that are produced from the reaction between two or more substances on the right hand of the chemical reaction.

When two species combines, they give a product. A single substance can also decompose to give products.

In the given reaction, we have been given a decomposition reaction and the products are  Al and Cl₂.

Answer:

See explanation

Explanation:

Synthesis reaction and decomposition reactions are two opposing processes.

While a synthesis reaction has to do with the formation of a substance from its constituents, decomposition deals with the breakdown of a substance into its constituents.

While decomposition requires energy and is an endothermic process, synthesis is usually an exothermic process in which energy is given off as stable products are formed.

Answer

b) 1 mole of atoms

Explanation

Avogadro;s Constant says a mole of any substance contains the same number of atoms (6.022 × 10²³).

Therefore, 1 mole of atoms is correct.

The density of pure water is 1 g/cm^3.

Its density is 0.98 g cm 3 at room temperature, in comparison with the handiest zero.92 g cm 3 for ice, a reality that has to be defined through atomic, and molecular concepts. If ice has been no longer much less dense than water, it might sink, having a devastating impact on lake backside ecosystems. believe it or now not, ice is honestly about 9% much less dense than water. for the reason that water is heavier, it displaces the lighter ice, causing the ice to glide to the pinnacle.

The density of ice is about 90 percent that of water, but that could range because ice can contain air, too. meaning that about 10 percent of an ice cube or iceberg will be above the water line. The density of water is maximum at four∘C, and the density of the ice is much less than the water due to its susceptible intermolecular pressure of attraction. as the density of water is more, it's miles heavier than ice. therefore ice floats on the floor of the water. Ice continually floats due to the fact it's far less dense than everyday water. because frozen water molecules shape a crystal.

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Answer:

By size, Jupiter reigns supreme in our solar system. This gas giant has 11 times the diameter of Earth. Astronomers have spotted even larger gas giants, such as the exoplanet Kepler-7b, located 1,400 light years away from Earth.

In our solar system, Jupiter and Saturn are gas giants. These planets make Earth look tiny. The diameter of Jupiter is 11 times bigger than that of Earth, and Saturn’s is nine times bigger. Some people also include Uranus and Neptune in the gas giant category. They have a lot of hydrogen and helium in their atmospheres. But these planets also have water, methane and ammonia, and so NASA places them in their own group.

Astronomers have spotted gas giants outside our solar system. Like Jupiter and Saturn, they aren’t very dense. But they can be even bigger or hotter than our solar system’s gas giants.

Explanation:

Hope it helps

Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

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Answer:

True

Explanation:

Vocal folds vibrate when excited by aerodynamic phenomena; they are not plucked like a guitar string. Air pressure from the lungs controls the open phase. The passing air column creates a trailing “Bernoulli effect,” which controls the close phase.

Answer:

yes

Explanation:

well for some people because some times u can control your voice and sometimes u just get voice cracks

Answer:

just downloud smart

Explanation:

thank me later

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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The four types of physical weathering are:

1.) Frost action or freeze-thaw weathering

2.) Exfoliation or unloading

3.) Thermal expansion and contraction

4.) Abrasion

These types of weathering are similar in that they all involve physical processes that break down rocks and other geological materials without the involvement of chemical reactions.

Frost action occurs when water seeps into cracks in rocks and freezes, causing the water to expand and exert pressure on the surrounding rock. This process repeats over time and can cause the rock to fracture and break apart.

Exfoliation occurs when rocks that were once buried deep beneath the earth's surface are exposed to lower pressures as overlying rocks erode away. As the pressure decreases, the rocks expand and crack, causing outer layers of rock to peel away like layers of an onion.

Thermal expansion and contraction occurs when rocks are repeatedly subjected to heating and cooling cycles. This can cause the rock to expand and contract, leading to the development of cracks and fractures.

Abrasion occurs when rocks and other geological materials are subjected to repeated rubbing or grinding by other materials, such as wind-blown sand, water, or other rocks. This process can cause rocks to wear down and break apart over time.

In summary, these four types of physical weathering are similar in that they all involve physical processes that break down rocks and other geological materials, but each type operates under different conditions and results in different forms of weathering.

Answer:

below

Explanation:

The four types of physical weathering are:

1. Freeze-thaw weathering

2. Exfoliation

3. Abrasion

4. Thermal expansion and contraction

These types of physical weathering are similar in that they all involve the breakdown of rocks and other geological features due to physical forces rather than chemical reactions. In each case, the physical stress causes the rock to crack or break apart. Additionally, they all can occur in various types of climates and environmental conditions.

Answer: C

Explanation: 3 mol O2 ⇒ 2 mol CO2

O2 reacts to produce 5 mol of CO2 = (3 * 5)/2 = 7.5 mol O2

Answer: There are 0.307 moles of molecules in 35 g of octane.

Explanation: You start by finding the molar mass of octane,(C8H18)This is 114 grams, because there are eight moles of carbon atoms and eighteen moles of hydrogen atoms in each mole of octane molecules.So, we total up 8 x 12 (for the carbon) and 18 x 1 (for the hydrogen).35g÷114 9g. That's it! This answer is the number of moles of octane molecules contained in the 35 grams of the compound.

-------

mol

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 5.05×10²⁴ particles are in 8.4 mole of octane.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number

number of atoms/molecules/particles=number of moles × 6.022×10²³(Avogadro number)

number of moles of octane= 8.4 moles

Substituting all the given values in the above equation, we get

number of atoms/molecules=8.4 × 6.022×10²³

number of atoms/molecules=5.05×10²⁴ particles

Therefore, 5.05×10²⁴ particles are in 8.4 mole of octane.

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The predicted binding energy for the electron in hydrogen in units of MJ/mol is -13.6 MJ/mol.

Using the value for the energy of an electron in a hydrogen atom in the ground state calculated using the Bohr model, we have:

E_binding = -E_electron = -(13.6 eV) = -2.18 × 10²-18 J/electron

To convert from J/electron to MJ/mol, we can use the following conversions:

1 J/electron * (1 mol/6.022 x 10²23 electrons) = 1.66 x 10²-24 J/mol

1 MJ = 10²6 J

So, putting it all together:

E_binding = (-2.18 x 10²-18 J/electron) * (1 mol/6.022 x 10²23 electrons) * (10²-6 MJ/1 J) = -13.6 MJ/mol

Therefore, the predicted binding energy for the electron in hydrogen in units of MJ/mol is -13.6 MJ/mol.

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Percentage is a ration of part to a whole. In our case, in perfect conditions, yield is theoretical and thusly considered larger, a whole. While actual yield is less because of imperfect conditions. The percentage is,

\((12.33\cdot 100)/14.5\approx85.03\%\).

Hope this helps.

Answer: 85.03%

Explanation:

Percentage yield = (actual yield/ theoretical yield) x100

so: (12.33/ 14.50)x 100

= 85.0344827586

Answer:

Explanation:

A Bronsted-Lowry acid is a chemical species that donates one or more hydrogen ions in a reaction.

In contrast, a Bronsted-Lowry base accepts hydrogen ions.