The aqueous reaction A→products has a rate r = 2CA/(1+CA)2(rate in moles/liter min), and is to be carried out in a continuous reactor system. We need to process 100 moles/h of 2 molar feed to 90% conversion. Calculate the reactor volumes required in PFR

Therefore, there are 73.3 grams of sodium in the final container.

Sodium chloride (NaCl) is a neutral compound, meaning it is neither acidic nor basic. It is a salt formed by the combination of sodium (Na+) and chloride (Cl-) ions, which have a neutral charge and therefore do not affect the pH of a solution.

Firstly, the number of moles of sodium in the solution will be:

n = C * V = 5.72 M * 564.2 mL = 3.21 moles

Next, we convert the number of moles of sodium to grams:

mass = n * atomic mass = 3.21 moles * 22.99 amu/mole = 73.3 grams

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Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods

Materials generally become warmer when they are "absorbed" by light, this statement is more detailed. So, the correct answer is "absorbed by them."

Explanation: When a material absorbs light, it receives energy from the light, which leads to an increase in temperature. When light is absorbed by a material, the energy of the light is transformed into internal energy in the material. The temperature of a material can increase as a result of this energy absorption.

This is due to the fact that the increased internal energy of the molecules in the material causes them to vibrate more quickly and hence results in a temperature rise.

The light reflects or transmits when it passes through the material. When light reflects off a surface, it bounces back in the opposite direction. Transmitted light travels through a material without being absorbed by it.

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Answer:

Cost of silk was too high

Explanation:

The major reason of not using silk as a fabric in the hot air balloons was high cost of silk. Due to its high cost, silk became unaffordable for use in modern balloon.

If cost is neglected, then silk is the perfect material for hot air balloon as it is light in weight

The classification of the metals is;

Main group/ representative metals - Tl

Main group non metal - Se, Rn

Main group metalloid - As

Transition metal - Mo

Inner transition metal - Ru, Eu

The periodic table is a classification of elements according to their atomic numbers. We know that elements are arranged in the periodic table in order of increasing atomic numbers of the elements.

Let us now classify each element as required;

Main group/ representative metals - Tl

Main group non metal - Se, Rn

Main group metalloid - As

Transition metal - Mo

Inner transition metal - Ru, Eu

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Giant molecules are also referred to as macromolecules and polymers when numerous molecules are combined. These atoms are arranged in a three-dimensional structure and are joined by covalent bonds.

A giant molecule, also known as a macromolecule, is a usually large molecule crucial to biophysical processes, such as a protein or nucleic acid. It is made up of many atoms that are covalently bound. Large non-polymeric molecules including lipids and macrocycles, as well as biopolymers, are the most prevalent macromolecules in biochemistry. In addition to synthetic fibers, giant molecules can also be found in research materials like carbon nanotubes.

Different experts use different terminology for giant molecules. For instance, in biology, giant molecules refer to the four immense molecules that make up living things, while in chemistry, it refers to aggregates of two or more molecules that are held together by intermolecular forces rather than covalent bonds yet that is difficult to dissolve apart. The term giant molecule is frequently referred to as high polymer in British English.

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Answer:

Explanation:

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

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

From the question we have

mass = 418.23 g

volume = 436.2 ml

\(density = \frac{418.23}{436 .2} \\ = 0.958803\)

We have the final answer as

Hope this helps you

Answer:

Explanation:

first, you calculate the amount of O2 in moles:

98.0 ÷ 32 = 3.0625

second, the ratio if O2/C3H8 is 5 so you need to calculate O2 in moles with that:

3.0625 ÷ 5 = 0.6125

third, the amount of CO2 in moles also can be calculate by the ratio of C3H8/CO2 which is 3

0.6125 × 3 = 1.8375

then multiply CO2 in moles by its molar mass which is 44 g/mol

1.8375 × 44 = 80.85g

Answer:

Magnesium would be the metal

Explanation:

The heat involved in a physicochemical process follows the formula:

Q = m×C×ΔT

Where Q is heat involved,

m is mass of substance,

C is specific heat of the susbtance

And ΔT change in temperature

We can solve por specific heat of the solution:

C = Q / m*ΔT

Replacing the values of the problem:

C = 2090J / 40g*(81.7°C-30°C)

C = 1.01J/g°C

This specific heat is the specific heat of Magnesium. Thus:

Answer:

White being the color and coming in small grains.

Explanation:

Physical properties are something you can clearly see about the object.

Answer:

Hey mate......

Explanation:

This is ur answer....

It was in the lesson, the answer is it is solid and does not conduct electricity.

Physical Properties                                 Chemical Properties

White cubic crystals                                 Do not undergo combustion

Odorless, salty taste                                 Make ionic bonds easily

As solids, they do not conduct electricity  The product of mixing acids and bases.

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Answer:

The uses of hydrogen gas are to produce electricity, heat, power, fertilizer, and many more.

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Answer:Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal. The loss or gain of valence electrons allows ions to obey the octet rule and become more stable. Ionic compounds are typically neutral. Therefore, ions combine in ways that neutralize their charges.

Explanation:

Ionic bonds tend to form between two atoms with a high electronegativity difference.

Explanation:

So, from this, we can conclude that ionic bonds tend to form between two atoms with a high electronegativity difference.

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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 number of atoms N = 5.8 x 10²¹

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12  

1 mole = 6.02.10²³ particles  

mass of N in 0.82 g of NaNO₃ (MW NaNO₃: 85 g/mol) :

\(\tt mass~N=\dfrac{Ar~N}{MW~NaNO_3}\times mass~NaNO_3\\\\mass~N=\dfrac{14}{85}\times 0.82\\\\mass~N=0.135~g\)

moles of N :

\(\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{0.135}{14}=0.0096\)

The number of atoms N :

\(\tt N=n\times No\\\\N=0.0096\times 6.02\times 10^{23}\\\\N=5.8\times 10^{21}~atoms\)

The three tubes used to determine the optimal pH for amylase activity are typically filled with buffer solutions at different pH values, such as pH 5.0, pH 7.0, and pH 9.0.

The optimal pH for amylase activity can be determined by testing the enzyme's activity at different pH levels. Typically, a range of pH values is tested to determine the optimal pH, and three tubes are commonly used for this purpose.

These three tubes are typically filled with a buffer solution at different pH values, such as pH 5.0, pH 7.0, and pH 9.0. The amylase enzyme is then added to each tube, and the activity of the enzyme is measured under each condition. By comparing the enzyme activity at different pH levels, the optimal pH for amylase activity can be determined.

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The overall enthalpy of the reaction is -131.3 kJ.

To calculate the overall enthalpy of the reaction, you need to manipulate the given equations and combine them in a way that cancels out the common substances. Let's analyze each equation:

1: C (s) + O₂ (g) -> CO₂ (g)   ΔH₁ = -393.5 kJ

2: 2CO (g) + O₂ (g) -> 2CO₂ (g)   ΔH₂ = -566.0 kJ

3: 2H₂O (g) -> 2H₂ (g) + O₂ (g)   ΔH₃ = 483.6 kJ

To obtain the overall reaction: C (s) + H₂O (g) -> CO (g) + H₂(g), we can manipulate the equations as follows:

1: Reverse equation 1 to obtain: CO₂ (g) -> C (s) + O₂ (g)   ΔH₁' = +393.5 kJ

2: Halve equation 2 to obtain: CO (g) + 1/2 O₂ (g) -> CO₂ (g)   ΔH₂' = -283.0 kJ

3: Reverse and halve equation 3 to obtain: H₂ (g) + 1/2 O₂ (g) -> H₂O (g)   ΔH₃' = -241.8 kJ

Now, we can sum up the manipulated equations to obtain the overall reaction:

CO₂ (g) + CO (g) + H₂ (g) + 1/2 O₂ (g) -> C (s) + 2CO₂ (g) + H₂O (g) + 1/2 O₂ (g)

To calculate the overall enthalpy change (ΔHrxn), we sum up the enthalpy changes of the manipulated equations:

ΔHrxn = ΔH₁' + ΔH₂' + ΔH₃'

      = 393.5 kJ + (-283.0 kJ) + (-241.8 kJ)

      = -131.3 kJ

Therefore, the overall enthalpy of the reaction is -131.3 kJ.

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Potassium hydroxide (KOH), when in an aqueous solution, splits into two ions, a potassium K+K+ cation, and a hydroxide OH−OH− anion.

K+(aq)+OH−(aq)+H+(aq)+Cl−(aq)→K+(aq)+Cl−(aq)+H2O(l)

Similarly, hydrochloric acid (HCl), when in an aqueous solution, breaks into two ions, a proton H+H+ cation, and a chloride Cl−Cl− anion.

The dissociation of a compound turns upon its solubility.

According to the ionic equation, in the response between HCl and KOH, the potassium K+K+ cation and the chloride Cl−Cl− anion do not accept a stake in the chemical equation. These are spectator ions.

OH−(aq)+H+(aq)→H2O(l)

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Answer:92.1g

Explanation:

This means that the reaction consumed4.004moles NaCl⋅2 moles Na2moles NaCl=4.004 moles NaConvert this to grams by using the element's molar mass4.004moles Na⋅22.99 g1mole Na=92.1 g

Answer:

iron and nickel

______________

decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

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399.7 mL of EDTA  will be required in step 5 if your edta titrant is exactly 0.01000 m and you weighed out exactly 0.4000 g calcium carbonate .

Let's first write down the reaction that occurs between EDTA and calcium carbonate.

\(EDTA^4^-+ CaCO_3 = Ca\)

\(EDTA^-\) = \(CO_3^2^- + H_2O^+ +OH^-\)

In the above reaction, one\(EDTA^4^-\) reacts with one\(CaCO_3\) to form one \(CaEDTA^-\)

This means that the number of moles of EDTA used is the same as the number of moles of \(CaCO_3\) present in the sample.

We can use the following formula to calculate the moles of  \(CaCO_3\) present in the sample:

mols \(CaCO_3\)= mass of  \(CaCO_3\) ÷ molar mass of \(CaCO_3\)

We can use the following formula to calculate the number of moles of EDTA required to react with the \(CaCO_3\)present in the sample:

mols EDTA = mols \(CaCO_3\)

Therefore, the number of moles of EDTA required to react with 0.4000 g \(CaCO_3\) is:

mols  \(CaCO_3\) = mass of  \(CaCO_3\) ÷ molar mass of  \(CaCO_3\)

mols  \(CaCO_3\) =0.4000 ÷100.09 = 0.003997 mols

EDTA = mols

\(CaCO_3\)= 0.003997

The volume of EDTA required to react with this amount of  \(CaCO_3\) is given by the following formula:

\(V = n\)÷\(C_V\) = 0.003997  ÷0.01000 = 0.3997 L = 399.7 mL

Therefore, 399.7 mL of EDTA titrant is required to react with 0.4000 g of calcium carbonate.

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We need to measure 30.42 ml of the 1.277 M stock NaOH solution and dilute it to a final volume of 250.0 ml to obtain a 0.1236 M dilute NaOH solution.

To prepare 250.0 ml of a 0.1236 M dilute NaOH solution from a 1.277 M stock NaOH solution, we can use the following formula:

C1V1 = C2V2

where C1 is the concentration of the stock solution, V1 is the volume of the stock solution needed, C2 is the concentration of the dilute solution, and V2 is the final volume of the dilute solution.

Substituting the values into the equation, we get:

(1.277 M) V1 = (0.1236 M) (250.0 ml)

V1 = (0.1236 M) (250.0 ml) / (1.277 M)

V1 = 30.42 ml

Therefore, we need to measure 30.42 ml of the 1.277 M stock NaOH solution and dilute it to a final volume of 250.0 ml to obtain a 0.1236 M dilute NaOH solution.

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Answer:

Synthesis

General Formulas and Concepts:

Chemistry - Reactions

Explanation:

Step 1: Define RxN

RxN:   NH₃ + H₂SO₄ → (NH₄)₂SO₄

Step 2: Identify

Combining 2 compounds to form 1.

NH₃ + H₂SO₄ → (NH₄)₂SO₄

A + B → AB

It is a Synthesis Reaction.

Answer:

30.26 grams of N₂O₃

Explanation:

Divide by Avogadro's number. This leaves you with the number of moles. Then, multiply by the molar mass of N₂O₃

Explanation:

The water molecules in a solid are close and tightly fit together, moving at a slow pace. Molecules in the liquid state are more spread out and move a bit faster than the solid state. In the gas state, the molecules are extremely far apart and move at a rapid speed.

The number of different orders to organize the three finishers is 2,184

Permutation is a term used in mathematics to refer to the possible ordering of those elements that are part of a finite set.

The permutation has the following formula, where P is the total of possible organization options, n! is the total number of available players, and r! the number of players we need to organize.

Note: This question is incomplete because there is some information missing. Here is the complete information:

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