please answer these questions properly. I will mark brainiest for the proper answer and pleaaaaaaaaaaaase answer if you know the answer only. if u don't know the answer, leave it please. instead of writing the answer as "sorry I did not understand :)

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, value of the gas constant R is 0.0821LatmK⁻¹ when volume is 0.0413 L.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of nitrogen gas = 0.991 atm

V= volume of nitrogen gas =0.0413 L

n =number of moles of nitrogen gas = given mass ÷Molar mass

                                                          =0.0451 g ÷28

                                                          =0.0016mol

T =temperature of nitrogen gas =298 K

R = Gas constant =?

0.991 atm×0.0413 L=0.0016×R×298 K

R=0.0821LatmK⁻¹

Therefore, value of the gas constant R is 0.0821LatmK⁻¹.

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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:

the density is halved

Explanation:

doubling the volume results in the density being halved

Answer:

_ NH4NO3 -> _ N2O + 2 H2O

Explanation:

By having 2 water molecules, we reach the 4 H atoms and 3 O atoms that are present on the left side. We don't add any other coefficients because we already have enough N atoms and we don't have to manipulate the left side at all.

Answer:

The protein,hemoglobin,carries substances throughout our body and js a key part of our curuclatory syatem

Explanation:

yan lang po alam ko di ko po sure eh

Answer:

Explanation:

In distillation, q is defined as the moles of liquid flow in the stripping section per mole of feed introduced. The values of q for saturated liquid feed and for saturated vapor feed are 0 and infinity, respectively.

Answer: human induced global warming

Explanation:

It’s the only one that makes sense if you read the question

To determine the volume factor change, we must make V2 the focus of the equation. Therefore, the volume factor change is (c) 1/2.

As the Kelvin temperature increases, the pressure increases. Direct proportionality governs the connection between the two sums.

When the temperature in Kelvin increases, the pressure of the gas will increase fourfold.

According to the Stefan-Boltzmann law, an object's total radiant heat production .

and absolute temperature are inversely related.

Learn about the Boltzmann Law.

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Answer:The national woman suffrage association and American woman suffrage association.

Explanation: The party eventually realized that it needed to escalate its pressure in more aggressive tactics, like picketing the White House over many months, leading to the arrest and imprisonment of many suffragists. Using a variety of tactics, the party successfully pressured the president, members of congress, and state legislators to support of the 19th amendment to the U.S constitution guaranteeing woman nationwide the right to vote.

I apologize of I'm wrong but its probably OA

Sorry once again!

~wise rat

Answer: C.

Explanation:

gasoline evaporating into the air

The internal energy △E of the gas increased by 7,012.5 J.

The internal energy change of a system is given by the equation: ΔE = q + w where ΔE is the change in internal energy, q is the heat added to the system, and w is the work done by the system.

Since the volume remains constant, no work is done, so w = 0. Therefore, ΔE = q.

The heat added to the system is given by the equation:

q = nC(v)ΔT

where n is the number of moles of gas, C(v) is the molar specific heat capacity at constant volume, and ΔT is the change in temperature.

Substituting the given values, we get:

q = (1.00 mol) x (25.00 J/mol.K) x (280.5 K - 140.0 K)

q = 7,012.5 J

Therefore, the internal energy change for this process is:

ΔE = q = 7,012.5 J

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Answer: 4.5 moles

Explanation:

To understand how to solve this problem, you must understand the ratios written in this chemical equation.

The equation shows that 4 moles of Al forms 2 moles Al₂O₃. This creates the ratio 2:4 or \(\frac{2}{4}\)

To solve, you can set the two ratios to each other and cross multiply.

\(\frac{2}{4} = \frac{x}{9}\)

18 = 4x

x = 4.5 mol Al₂O₃

*both \(\frac{2}{4}\) and \(\frac{4.5}{9}\) can be simplified as \(\frac{1}{2}\), which verifies your answer*

Answer:

\(m_{nitrogen}=14g\)

Explanation:

Hello,

In this case, since we are talking about a chemical reaction in which a compound having nitrogen and chlorine is decomposed into chlorine and nitrogen, we must remember that the law of conservation of mass must be obeyed, for that reason, we notice that the mass of the whole reactants must equal the mass of the whole products, as shown below:

\(m_{reactants}=m_{products}\)

Next, we know there is only one single reactant and products are constituted by both chlorine and nitrogen:

\(m_{reactant}=m_{chlorine}+m_{nitrogen}\)

In such a way, we can compute the mass of nitrogen as shown below:

\(m_{nitrogen}=m_{reactant}-m_{chlorine}=120.4g-106.4g\\\\m_{nitrogen}=14g\)

Best regards.

Given a titration reaction, titrant concentration and volume, the analyte volume and mass, then to identify titrant to analyte stoichiometry : Put the coefficients of each compound in order and simplify if possible.

During titration, there are two solutions:  analyte and the titrant. Analyte is the unknown solution for which you would like to know the concentration or the equilibrium constant. The titrant is the known solution which has a precise and accurate concentration.

The stoichiometric point is the point where an equal amount of acid and base is present to neutralize chemical reaction. Known reagents added to  chemical reaction are called titrant and unknown solution is called analyte.

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Answer:

Ecell = +0.25V

Explanation:

the half-cell reactions for a voltanic cell

cathode(reduction): 2H⁺(aq) + 2e⁻ ------- H₂(g)

anode(oxidation): 2AgCl(s) ------- 2Ag⁺(aq) + 2Cl⁻ + 2e⁻

we have the standard cell potential E⁺cell = 0.18V at 80C respectively

Q = [H⁺]/[Cl⁻]

sub for [H+] = 0.10M and [Cl-] = 1.5M

Q= 0.1M/1.5M

Q = 0.067

Ecell = E⁺cell - \(\frac{0.059}{n}\) logQ

= 0.18 - \(\frac{0.056}{1}\) log 0.067

0.18- 0.059(-1.174)

Ecell = +0.25V

FeCl₃ has a van't Hoff factor of 3.400. -3.858ºC is the freezing point (in °C) of an aqueous solution made with 0.4100 m FeCl₃.

A liquid's freezing point is the temperature at which it turns into a solid. Similar to the melting point, the freezing point often rises with increasing pressure. In the case of combinations and for some organic substances, such as lipids, the freezing point usually below the melting point.

The first solid that forms when a combination freezes often differs in composition from the liquid, and the development of the solid alters the constitution of the remaining water, typically lowering the freezing point gradually.

∆T = i×m×Kf

i = van't Hoff factor = 3.400

m = molality = 0.4100 m

Kf = freezing constant = 1.860º/m

∆T = (3.400)(0.4100)(1.860)

∆T = 3.858º

Freezing point = 0º - 3.858º = -3.858ºC

Therefore, -3.858ºC is the freezing point.

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Answer:

A. dew forms from water vapor in the air

Explanation: As dew formation is spontaneous process, therefore, entropy of the universe will increase.

Answer:

To find the percentage by volume of alcohol, we need to divide the volume of alcohol by the total volume of the solution, then multiply by 100%:

Volume of alcohol = 19 mL

Total volume of solution = 19 mL + 31 mL = 50 mL

Percentage by volume of alcohol = (19/50) x 100% = 38%

Therefore, the percentage by volume of alcohol in the solution is 38%.

Answer:

20% volume percentage I think

Answer:

good luck tho

Explanation:

Answer: better

Explanation:

100Eu+e 16S---Sm150  represents alpha decay because  minimum penetration power and highest ionization power.

A positively charged particle similar to the helium-4 nucleus is spontaneously released during alpha decay. Two protons and two neutrons make up this particle, also referred to as an alpha particle. Sir Ernest Rutherford made the discovery and gave it a name in 1899.

The nuclei of heavy elements like radium, uranium, thorium, etc. undergo alpha decay. When a radium (Ra) nucleus decays, it releases an alpha particle and transforms into a radon (Rn) nucleus.

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Take a example of water

Attached structure

answer:when an herbivore eats meat and a carnivore eats the herbivore energy from the eatin meat is passed indirectly to the carnivore.

Answer: 0.0827

Hope This Will Help You And This Should Be The Correct One.

answer and explanation

to determine the percentage by mass of N on methyl orange.

We must first calculate the molar mass of methyl orange:

Carbo: 14 x 12.0 = 168

Hydrogen: 14 x 1.00 = 14

Sodium: 1 x 22.0 = 22.0

Nitrogen: 3 x 14.00 = 42

Oxygen: 3 x 15.99 = 47.97

Sulphur: 1 x 32.0 = 32.0

Total Methyl orange molar mass = 327,33 g/mol

Percentage mass of Nitrogen = mass of nitrogen/ mass of methyl orange x 100

42/327.33 x100

= 12.8%

Answer:

1. H₂SO₄

Explanation:

A balanced equation tells us how each reactant and product is related to each other in terms of moles.

The equation given has already been balanced since the number of atoms of each element is the same on both sides of the arrow. From the equation, we can see that 1 mole of H₂SO₄ reacts with 2 moles of NaOH. Whichever reactant that we do not have enough of to make more products is known as the limiting reagent, since it limits the amount of products formed.

Mole ratio of H₂SO₄: NaOH= 1: 2

The amount of NaOH needed is twice the amount of H₂SO₄ in terms of moles.

Given that there are 0.40 moles of H₂SO₄, let's calculate the amount of NaOH needed.

Amount of NaOH needed

= 2(0.40)

= 0.80 moles

However, there are only 0.75 moles of H₂SO₄. Since 0.75 <0.80, H₂SO₄ is the limiting reactant.

Additional:

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Answer:

See below

Explanation:

From the balanced equation you can see you need twice as many moles of NaOH as H2SO4....

   you have .4 moles of H2SO4   so you need .8 moles of NaOH

              but you only have .75 mole....so NaOH is the limiting factor (because you do not have enough)

Answer: A. C2H3F

Explanation:

Explanation:

5) Le Chatelier's principle says, when in a reversible reaction any of the concentration or temperature or pressure are changed, then the equilibrium shifts such a way to nullify the changes occurred. (hope you get it)

R ======= P

if concentration of reactant R is increased then eqm shifts towards the one with lower concentration ,that is product P.

forward direction is favoured.

if the above's reaction is endothermic, that is temp of product is low. So increasing temperature in such case reaction goes towards product.

forward direction is favoured.

If reaction is exothermic ,temp of reactant is more. So increasing temperature in such case, reaction goes towards reactants.

forward direction is favoured

........ plz brainliest my answer I definitely write you the complete explanation asap!

Answer:

SO₂: 0.39atm

O₂: 3.645atm

Explanation:

Based on the reaction:

2 SO₂(g) + O₂(g) → 2 SO₃(g)

2 moles of sulfur dioxide react per mole of oxygen to produce 2 moles of sulfur trioxide.

When the reaction occurs an comes to equilbrium, the partial pressure of each gas is:

SO₂: 1.3atm - 2X

O₂: 4.1atm -X

SO₃: 2X

Where X is the reaction coordinate.

As pressure at equilibrium of SO₃ is 0.91 atm:

0.91atm = 2X

Thus: X = 0.455atm.

Replacing, pressures at equilibrium of the gases are:

SO₂: 1.3atm - 2×0.455atm = 0.39 atm

O₂: 4.1atm -0.455atm = 3.645 atm