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The limiting reactant is N₂O₄ and the mass of N₂ formed from the reaction is 45.7 g (Option C)

The limiting reactant can be obtained as illusrated below:

N₂O₄ + 2N₂H₄ -> 3N₂ + 4H₂O

From the balanced equation above,

92.02 g of N₂O₄ reacted with 64.1 g of N₂H₄

Therefore,

50 g of N₂O₄ will react with = (50 × 64.1) / 92.02 = 34.83 g of N₂H₄

From the above calculation, we can see that only 34.83 g of N₂H₄ out of 45.0 g reacted.

Thus, the limiting reactant is N₂O₄

The limiting reactant shall be used in this case in order to obtain a maximum yield of N₂. Details below:

92.02 g of N₂O₄ reacted to produce 84.06 g of N₂

Therefore,

50 g of N₂O₄ will react to produce = (50 × 84.06) / 92.02 = 45.7 g of N₂

Thus, the mass of N₂ formed is 45.7 g

Therefore, the correct answer to the question is (Option C)

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Answer:

Explanation:

To determine which statement best describes what must be true for Object A to have a greater value of work, we need to understand the concept of work in physics. In physics, work is defined as the product of the force applied to an object and the distance over which the force is applied. Mathematically, work (W) is represented by the equation W = F × d, where F is the applied force and d is the distance.

In the given scenario, Object B is pushed across a longer distance than Object A. We are looking for the condition under which Object A would have a greater value of work.

1. A greater force is applied to Object A: If a greater force is applied to Object A compared to Object B, then Object A would indeed have a greater value of work. This is because work is directly proportional to the applied force. So, if the force applied to Object A is larger, it would result in a greater value of work.

2. Equal forces are applied to Objects A and B: If equal forces are applied to both Object A and Object B, then the force factor does not play a role in determining the difference in work. Therefore, this statement does not address the condition required for Object A to have a greater value of work.

3. The distance traveled by Object A is greater: If the distance traveled by Object A is greater than the distance traveled by Object B, while the applied forces are equal, then Object A would indeed have a greater value of work. As mentioned earlier, work is directly proportional to the distance over which the force is applied. So, if Object A travels a greater distance, it would result in a greater value of work.

4. The distance traveled by Object B is lower: This statement does not address the condition required for Object A to have a greater value of work. The relationship between the distances traveled by Object A and Object B does not affect the comparison of their work values.

In summary, the statement that best describes what must be true for Object A to have a greater value of work is: "The distance traveled by Object A is greater." If Object A travels a greater distance, while the applied forces remain equal, it would result in a greater value of work for Object A.

The product would be aluminum oxide, \(Al_2O_3\).

The word equation for a reaction can be interpreted as the formula equation of the same reaction by writing out the chemical formulas of the reactants and products accordingly.

Now, let's consider the reaction in question:

Four atoms of aluminum metal react with three molecules of oxygen to produce two molecules of aluminum oxide.

Four atoms of aluminum = 4 Al

Three molecules of oxygen = \(3O_2\)

two molecules of aluminum oxide = \(2Al_2O_3\)

Thus, the formula equation would be: \(4Al + 3O_2 --- > 2Al_2O_3\)

In other words, the product would be  \(Al_2O_3\).

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Answer:

   A + B = AB is an example of a synthesis reaction

Explanation:

Answer:

9.10% dextrose

Explanation:

To find the mass percent, you need to use the following equation:

                               mass (g) of solute
Mass Percent  =  ---------------------------------  x  100%
                              mass (g) of solution

You can plug the given values into the equation and solve to find the mass percent of dextrose. But first, you need to calculate the mass of the solution.

Mass (solute): 25.0 g

Mass (solution): 250.0 g + 25.0 g = 275 g

                                25.0 grams
Mass Percent  =  ------------------------  x  100%
                                 275 grams

Mass Percent  =  0.0909 x 100%

Mass Percent  =  9.10%

A solution of dextrose contains 25.0 g solute in 250.0 g water. 9.10% is the percentage by mass of dextrose in this solution.

A component's concentration in a combination or compound can be expressed as a mass percent, also known as a weight percent. It shows how much of the total mass of the solution or mixture is made up of the solute's (component's) mass. In chemistry, mass percent is frequently employed and stated as a percentage.

Mass Percent  =     mass (g) of solute/       mass (g) of solution x  100%

Mass (solute): 25.0 g

Mass (solution): 250.0 g + 25.0 g = 275 g

Mass Percent  =25.0 grams /    275 grams x  100%

Mass Percent  =  0.0909 x 100%

Mass Percent  =  9.10%

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The final temperature of the copper and water in the calorimeter given the data is 30.3 °C

Heat loss = Heat gain

MᵥᵥC(Tᵥᵥ – Tₑ) = M꜀C(Tₑ – M꜀)

95 × 0.385 (77.9 – Tₑ) = 42 × 4.184(Tₑ – 20.4)

36.575(77.9 – Tₑ) = 175.728(Tₑ – 20.4)

Clear bracket

2849.1925 – 36.575Tₑ = 175.728Tₑ – 3584.8512

Collect like terms

2849.1925 + 3584.8512 = 175.728Tₑ + 36.575Tₑ

6434.0437 = 212.303Tₑ

Divide both side by 212.303

Tₑ = 6434.0437 / 212.303

Tₑ = 30.3 °C

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The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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The paper is soaked and diluted if a paper is left in the container overnight.

To soak something is to submerge it into water

When the hydrogen bonds that hold the cellulose fibers together break apart and weaken, this causes the fibers to separate more easily. Thus, the paper becomes weak and much easier to tear.

Even thick stacks of notebook paper can be torn easily when they're soaking wet.

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A substance's temperature in physics' laws, is directly related to the average kinetic energy of its particles. Because the particles' mass is constant, they must travel faster as the temperature rises.

In physics, the kinetic energy of an object is the energy it possesses as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a given speed.

The body retains its kinetic energy, having acquired it during acceleration, until its speed changes.

Kinetic energy is present in an accelerating ball, a walking human, and electromagnetic radiation like light. Another type of kinetic energy is the energy associated with the continuous, random bouncing of atoms or molecules.

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Answer:

2AlCl3 + 3Ca(OH)2 --> 2Al(OH)3 + 3CaCl2

Explanation:

aluminum chloride + calcium hydroxide --> aluminum hydroxide + calcium chloride

AlCl3 + Ca(OH)2 --> Al(OH)3 + CaCl2

Note: Al forms an ion of charge +3, Cl forms ion of charge -1, OH forms ion of -1, and Ca forms ions of charge +2. So when you combine 2 of these into ions, (must be one positive, one negative for ionic compounds), make sure the net charge at the end =0.

For example, Al ions have a charge of +3, so it needs 3 Cl- ions to eliminate the negative charge, so aluminium chloride is AlCl3.

Now balance the equation. make sure both sides have the equal no. of ions.

start with Cl. the reactant side has 3 Cl ions, while the product side has 2. So, the lowest common multiple is 6. Multiply AlCl3 by 2, and CaCl2 by 3 to get 6 Cl ions on each side.

2AlCl3 + Ca(OH)2 --> Al(OH)3 + 3CaCl2

Now the reactant side has 2 Al ions. So, multiply the Al(OH)3 on the product side by 2 to balance out Al ions.

2AlCl3 + Ca(OH)2 --> 2Al(OH)3 + 3CaCl2

Finally, the product side has 6 OH- ions, so multiply 3 on Ca(OH)2 from the reactant side to balance out the OH- ions.

2AlCl3 + 3Ca(OH)2 --> 2Al(OH)3 + 3CaCl2

Recount the ions to make sure it is correctly balanced! :)

To solve this problem, we need to use the balanced chemical equation given in the question to determine the relative amounts of the reactants and products. The balanced chemical equation is:Cr2O3 + 2Al → 2Cr + Al2O3We are given that the starting amount is 1 tonne of chromium (III) oxide (Cr2O3), and we want to calculate the mass of aluminium needed to react with this amount. From the balanced equation, we can see that for every 1 mole of Cr2O3 that reacts, 2 moles of Al are needed.1 tonne is equal to 1000 kg, and the molar mass of Cr2O3 is 151.99 g/mol, so 1 tonne of Cr2O3 is equal to 1000 / 151.99 = 6.58 moles of Cr2O3. Since 2 moles of Al are needed for every 1 mole of Cr2O3, 6.58 moles of Al are needed to react with 1 tonne of Cr2O3.The molar mass of Al is 26.98 g/mol, so 6.58 moles of Al is equal to 6.58 x 26.98 = 179 kg of Al. Therefore, the mass of aluminium needed to react with 1 tonne of chromium (III) oxide is 179 kg.To calculate the mass of chromium produced, we can use the same method. From the balanced equation, we can see that for every 1 mole of Cr2O3 that reacts, 2 moles of Cr are produced. Since 1 tonne of Cr2O3 is equal to 6.58 moles, 6.58 x 2 = 13.16 moles of Cr are produced.The molar mass of Cr is 52 g/mol, so 13.16 moles of Cr is equal to 13.16 x 52 = 687 kg of Cr. Therefore, the mass of chromium produced from 1 tonne of chromium (III) oxide is 687 kg.

The balanced chemical equation provided in the question must be used to calculate the proportions of the reactants and products in order to answer this issue. Al2O3 + Cr2O3 = Cr2O3 + Al2O3 is the balanced chemical equation.

Given a starting amount of 1 tonne of chromium (III) oxide (Cr2O3) and need to determine how much aluminum is required for the reaction to occur.

We can see from the balanced equation that 2 moles of Al are required for every 1 mole of Cr2O3 that reacts. Given that 1 tonne is equivalent to 1000 kg and that Cr2O3 has a molar mass of 151.99 g/mol, 1 tonne of Cr2O3 is equal to 6.58 moles of Cr2O3.

In order for 1 tonne of Cr2O3 to react with 6.58 moles of Al, 2 moles of Al must be added for every mole of Cr2O3.6.58 moles of Al are equivalent to 6.58 x 26.98, or 179 kg, of Al since the molar mass of aluminum is 26.98 g/mol.

As a result, 179 kg of aluminum is required to react with 1 tonne of chromium (III) oxide.

We may apply the same procedure to determine the mass of chromium produced. The balanced equation shows that 2 moles of Cr are created for every mole of Cr2O3 that reacts.

Because 1 tonne of Cr2O3 is equivalent to 6.58 moles, the amount of Cr produced is 6.58 x 2 = 13.16 moles.

13.16 moles of Cr are equal to 13.16 x 52 = 687 kg of Cr since the molar mass of Cr is 52 g/mol. Consequently, 687 kg of chromium is created from 1 tonne of chromium (III) oxide.

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The empirical formula for a compound is 2N2O if it contains 4 moles of oxygen and 10 moles of nitrogen. A compound is a material that results from the chemical bonding of two or more elements.

The two types of bonding that hold the atoms of a molecule together most frequently are ionic and covalent. In chemistry, a substance's empirical formula is the simplest whole number ratio of the atoms that are present in it. The simple illustration of this concept is the empirical formula of sulphur monoxide, which is just NO.

Nitrogen = 10/14 = 0.71 M of nitrogen = 4/16 = 1/4 = 0.2 M of oxygen

Atomic mass is equal to 0.2/0.2 and 1

Atomic mass = 0.71/0.2 = 3.6, or around 4, and empirical formula = 2N2O.

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The answer is 100.431 °C.

we know that we can find the boiling point using the following equation:

ΔT=kb×m

where
ΔT=boiling point elevation

kb=molal boiling point elevation constant (0.51 °C/m for water)

m=molality of the solution

To calculate the molality of the given solution

The molar mass of FeBr3:

Fe:1×55.85g/mol =55.85g/mol

Br:3×79.90 g/mol=239.7 g/mol

Total:295.55 g/mol

number of moles present in 50g is:

n=mass/molar mass=50.0g/295.55g/mol

                                =0.169mol

mass of water=200.0g

molality=moles of solute/kg of solvent

molality=0.169mol/0.200kg=0.845mol/kg

Finally, we can calculate the boiling point elevation

ΔT=kb×m

ΔT=0.51 °C/m×0.845mol/kg=0.431 °C.

boiling point at standard pressure=100.0 °C.

boiling point of solution=100.0 °C +0.431 °C=100.431 °C

So the answer is 100.431 °C

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In Atlanta, GA, certain seasons are associated with poorer air quality due to various factors such as weather conditions, human activities, and geographical location.

Typically, the seasons with the worst AQI in Atlanta, GA, are summer and early fall. This is primarily due to the combination of high temperatures, stagnant air masses, and increased pollution from various sources.

During the summer months, Atlanta experiences hot and humid weather, which can contribute to the formation of ground-level ozone. Ozone is a harmful pollutant that is created when pollutants from vehicles, power plants, and industrial activities react with sunlight and heat. High levels of ozone can cause respiratory issues and other health problems.

In addition to ozone, Atlanta also experiences increased levels of particulate matter (PM) during the summer and early fall. PM refers to tiny particles suspended in the air, which can come from sources such as vehicle exhaust, industrial emissions, and wildfires.

These particles can be inhaled into the lungs and can have detrimental effects on respiratory health.

It's important to note that air quality can vary from year to year and is influenced by various factors. Local regulations, weather patterns, and changes in pollutant emissions can all impact the AQI during different seasons.

Monitoring air quality reports and taking necessary precautions such as reducing outdoor activities during times of poor air quality can help individuals stay informed and protect their health.

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Answer:

18 significant figures all figures are significant

Answer:

False. because weathering happens first, then erosion takes place.

Explanation:

Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.

Weathering and erosion are different names for the same process is false.

Erosion is defined as the geological process wherein earthen components are eroded and moved by elements like wind or water. Soil erosion primarily occurs when dirt is exposed to strong winds, copious rain, and moving water. Some human endeavors, especially farming and land clearance, increase the susceptibility of soil to erosion.

Erosion occurs when these natural forces shift the smaller rock fragments. Weathering is what happens when a rock is altered or damaged but remains in its current location. Erosion is the process through which the fragments of weathered rock are removed. The processes that reduce rocks to little particles are erosion and weathering.

Thus, weathering and erosion are different names for the same process is false.

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Part - A 164000 molecules of substrate can a molecule of enzyme process in each minute.

Part - B The kcat/KM for the enzyme reaction is  85.416×10⁶ (M.s)⁻¹

An enzyme will attach itself to one or more reactant molecules and start the reaction by catalyzing it. These molecules are the substrates for the enzyme. One substrate may undergo several product breakdowns in some reactions. Others involve the fusion of two substrates into a single larger molecule or the exchange of individual molecules.

The place on an enzyme's surface where substrates bind and the chemical reaction it catalyzes take place is called the active site of the enzyme.

(A)kcat = turnover number

kcat = Vmax/[Etotal] = ( 164×10⁻⁶ (mol/L)min⁻¹ )/(1×10⁻⁹ mol/L)

kcat = 164000 min⁻¹

(B) kcat/kM = ( 164000 min⁻¹ / 32×10⁻⁶M )

kcat/kM = 5125×10⁶ (M.min)⁻¹

kcat/kM  = 85.416×10⁶ (M.s)⁻¹.

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Answer:

No

Explanation:

Henry’s law is a gas law which states that at the amount of gas that is dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid when the temperature is kept constant. The constant of proportionality for this relationship is called Henry’s law constant (usually denoted by ‘kH‘). The mathematical formula of Henry’s law is given by:

P ∝ C (or) P = kH.C

Where,‘

Limitations of Henry’s Law

Answer:

Bubonic plague is the correct answer!!!

Explanation:

mark me brainliest

Answer:

The answer is Bubonic Plague

Answer:

B.0

Explanation:

Answer:

1656.116

Explanation:

473.176 is how many millimetres equals a pint and you would multiply that by 3.5

Plasma is the largest component of blood comprises about 55% of the total blood volume. It is responsible for the maintenance of immune system. 3.5 pt of plasma is equal to 1656.12 milliliters.

A pint is a measure of volume or capacity. It is a unit in both imperial and US customary measurement system. Traditionally, it is one-eighth of a gallon. To convert pints to mL, a formula can be used.

In US customary measurement system, 473.176 mL of any liquid substance is equal to a pint. To convert pints to milliliters, we can multiply the given value of pints simply by 473.176.

For example, to find how many milliliters of plasma is there in X pints of plasma.

pints to mL formula:

___mL = pint × 473.176

In the question, 3.5 pints of plasma is given. So, to calculate the amount of plasma in milliliters we can use the formula:

3.5 × 473.176 = 1656.116

Therefore, 1656.116 mL of plasma is equal to 3.5 pt which is received by the patient.

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Explanation:

Two different elements have similar chemical properties when they have the same number of valence electrons in there outermost energy level. Elements in the same column of the periodic table have similar chemical properties.

Answer: d)endothermic with a positive entropy change

Explanation:

Endothermic reactions are those in which heat is absorbed by the system and exothermic reactions are those in which heat is released by the system.

 Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

As temperature of water decreases on dissolution of \(NH_4NO_3\) , it means heat has been absorbed by \(NH_4NO_3\) during dissolution and that heat is taken from water. Thus process is endothermic. As dissolution will lead in the formation of ions \(NH_4^+\) and \(NO_3^-\) , randomness will increase and thus there is a positive entropy change.

We study the reactions that chemists utilise to create bizarre carbon-based structures in organic chemistry.

The study of the makeup, properties, and responses of organic compounds including organic materials, or matter in any of its many forms that contains carbon atoms, is the subject of the branch of science known as organic chemistry. Their structural formula is determined by study of structure.

We will study the reactions that chemists utilise to create bizarre carbon-based structures in organic chemistry, in addition to the analytical techniques used to characterise them. We'll also consider the molecular reaction mechanisms that are driving those reactions.

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pH = 11.61

The formula for calculating the pOH of a solution is expressed as:

Given the following parameters

Substitute

Determine the pH of the solution

Hence the pH of the solution is 11.61

The reaction can be said to be at equilibrium when the reaction rates of making products and using reactants are equal.

When the rates of the forward and reverse reactions are equal and the concentrations of the reactants and products don't change over time, a chemical reaction is said to be in equilibrium.

When the system reaches equilibrium, it is in a state of balance, which means that the concentrations of the reactants and products have not changed significantly.

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