draw the conjugate base for the following acid (lone pairs do not have to be drawn): nh3

Answer:

347.4 (19.3 mole)

Explanation:

CH4 + 2O2 = CO2 + 2H2O

1(mole) - 9.65(mole)

2(mole) - x ⇒x = 9.65*2=19.3

m=n*M ⇒ m= 19.3*(1*2+16)= 19.3*18=347.4(g)

When only 1 mol of oxygen was intended to be produced, a process instead yields 4.93 L of oxygen. The percent yield of the reaction is 493%.

Percent yield is a measure of how much of the desired product is produced in a chemical reaction. It is calculated by comparing the actual yield of a product to the theoretical yield, which is the amount of product that would be produced if the reaction were 100% efficient.

To calculate the percent yield, you can use the formula:

= percent yield

= (actual yield / theoretical yield) x 100%

The theoretical yield of a reaction is calculated by multiplying the number of moles of reactant used by the stoichiometry of the reaction. In this case, the reaction is supposed to produce 1 mol of oxygen, which is the theoretical yield. To calculate the actual yield, we can use the Ideal gas law PV = nRT, where P is the pressure, V is the volume, n is the number of mol. Since we know that V = 4.93 L, we can use this information to find n:

= n

= (PV) / RT

The actual yield is 4.93 L of O2 or 4.93 L of any gas at STP (Standard Temperature and Pressure) is equivalent to 4.93 moles of O2.

Then we can use this information to calculate the percent yield:

= percent yield

= (actual yield / theoretical yield) x 100%

= (4.93 moles O2 / 1 mole O2) x 100%

= 493%

So, the percent yield of the reaction is 493%.

It's important to note that a percent yield of greater than 100% is usually an indication of an error in the measurement or calculation of the actual yield, or it could be an indication that the theoretical yield is incorrect.

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Answer:

9 g/cm³

Explanation:

Since density is calculated by mass divided by volume, the density of the salt water is (36000/4000) g/cm³ = 9 g/cm³.

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Electron transfer pumps protons out of the matrix. As the protons reenter through the ATP synthase, ATP is produced in the matrix.

A negatively charged subatomic particle known as an electron can either be free or attached to an atom (not bound). One of the three main types of particles within an atom is an electron that is bonded to it; the other two are protons and neutrons.

The words electric and ion are combined to form the word electron. In turn, electron is derived from the suffix -on, which is currently used to describe other subatomic particles, such as a proton or neutron.

The atom is made up of the subatomic particles electron, proton, and neutron. The atom is made up of a core nucleus that has neutrons and protons in it. The electrons that surround the nucleus.. Neutrons are neutral, protons are positively charged, and electrons are negatively charged.

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It is true that a redox reaction is the electrochemical cell's overall chemical outcome. An electrochemical cell is made up of two half-cells connected by an external circuit: an anode (where oxidation takes place) and a cathode (where reduction takes place).

The movement of electrons from the anode to the cathode through the external circuit causes the redox reaction to happen.

Oxidation, in which a species loses electrons and is oxidized, occurs at the anode half-cell. This causes the release of positively charged ions (cations) into the solution.

Reduction occurs in the cathode half-cell, where a species acquires electrons and is reduced. This causes the amount of positively charged ions (cations) in the solution to decrease.

In its entirety, the process involves moving electrons from the anode to the cathode, which is made possible by the current flowing through the external circuit. To balance the charge, the electrolyte's ions move in tandem with this transfer of electrons. To keep the cell's charge neutrality, the redox reaction happens simultaneously at the anode and the cathode.

Because both oxidation and reduction reactions take place concurrently at the anode and cathode, respectively, the net chemical outcome of an electrochemical cell is therefore a redox reaction.

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Nothing happens if the iron rod is inserted into the nitrogen. However, when the iron rod is suspended in the air.

A non-metal, nitrogen is. As a result, it typically interacts with metals to create ionic compounds. Only when the reactants produce products that allow the system as a whole to release energy does the reaction take place. If the system requires energy to undergo the reaction, the reaction cannot take place. When iron is exposed to oxygen and moisture for an extended length of time, a process known as iron oxide occurs. At the atomic level, oxygen bonds to iron to produce the complex known as an oxide, which weakens the metal bond.

The complete question is - If a piece of pure iron is placed in pure nitrogen, nothing happens. If the iron is exposed to air, it begins to rust. What conclusion can you make about air, based on this observation?

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Answer: \(5.4198 \times 10^{24}\) particles

Explanation:

We know there are about \(6.022 \times 10^{23}\) particles in 1 mole, so in 9 moles, there is \(6.022 \times 10^{23} \times 9=5.4198 \times 10^{24}\) particles.

Answer:

See explanation

Explanation:

For the equilibrium; A + B ⇄C + D

At time = 0 secs, the concentration of products is zero while the concentration of reactants decreases steadily.

As time goes on, the concentration of the reactants continues to decrease while the concentration of products increases.

At equilibrium the concentration of both reactants and products are now the same because the rate of forward reaction is equal to the rate of reverse reaction are now the same.

Answer:

When the liquid gains energy the particles move more rapidly causing an increase in the volume. When the liquid gains energy the particles move more slowly causing a decrease in volume.

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When a can of coke is removed from the fridge and then warmed up to room temperature, the entropy of the beverage will increase.

We can define entropy as the disorderness of a system or the randomness of a particular system. The entropy of a system changes with a change in the temperature of the system.

As the temperature increases, the entropy of the system also increases and when the temperature is reduced, the entropy of the system also decreases. When a can of coke is kept in fridge, the entropy decreases as the temperature gets decreased.

As the can of the coke is taken out and warmed up to room temperature, the entropy increases with the increase in temperature as the randomness of the molecules increases.

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The cheese curds are formed due to the coagulation of the protein by acidic lemon juice.

We need to review the fundamental nature of the milk and the lemon juice. In this case, it must occur to us again that milk is made up of a protein and since it is a protein, we know that there is an optimum pH where a protein is able to function quite well. Outside that pH, the protein may not be able to function well.

Again the lemon juice is largely composed of acid since it is of the citrus family hence it contains the citric acid and this would cause the pH of the system to ow tilt towards the acid range.

Having laid these foundations, we can now see that when we do add the lemon juice to the milk the pH of the system is now outside the optimal and the protein in the milk would coagulate thus the cheese curds are formed.

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The half-life of the radioactive material according to the given scenario in question is 1.2 hours.

To determine the half-life of the radioactive material, we can use the decay rate formula:

Decay rate =\(Initial\ decay\ rate * (1/2)^{(time\ elapsed / half-life)}\)

Given the initial decay rate of 1120 decays per minute and a decay rate of 140 decays per minute after 3.6 hours, we can set up the following equation:

\(140 = 1120 * (1/2)^{(3.6 / half-life)}\)

Dividing both sides of the equation by 1120, we get:

(1/8) = (1/2)^(3.6 / half-life)

To simplify further, we can rewrite (1/8) as (1/2)^3:

(1/2)^3 = (1/2)^(3.6 / half-life)

By comparing the exponents, we can deduce:

3 = 3.6 / half-life

Solving for half-life, we find:

half-life = (3.6 / 3) hours = 1.2 hours

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Among the given options, the compounds that would produce a basic solution are Na2O and MgO. Both of these compounds are metal oxides, which have the ability to react with water to produce hydroxide ions (OH-).

These hydroxide ions are responsible for making the solution basic. When Na2O reacts with water, it produces 2NaOH, which is a strong base. Similarly, when MgO reacts with water, it produces Mg(OH)2, which is a weak base.
On the other hand, CO, CO2, and BeH2 are not capable of producing basic solutions because they are either non-metallic compounds or have a covalent bond between two non-metals. These types of compounds do not contain any hydroxide ions that can dissociate in water and produce OH- ions. Therefore, they cannot increase the pH of the solution and make it basic.
In conclusion, among the given options, only Na2O and MgO would produce a basic solution due to their ability to react with water and produce hydroxide ions.

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248.4 °C

Explanation:

Boiling point: -246 °C

Atomic mass: 20.1797 u

Symbol: Ne

The correct option is (A) - This Bohr Model of atom describes that there are a total of 6 electrons in the given figure.

The electrons are positioned in circular orbitals at particular distances from the central nucleus in the Bohr model of the atom. These orbits create electron shells or energy levels, which allow us to see how many electrons are present in each shell. The number and the letter "n" are used to identify these energy levels. The first energy level nearest to the nucleus, for instance, is represented by the 1n shell. Normally, an electron resides in the shell with the lowest energy, which is the one closest to the nucleus. A photon of light's energy can raise it to a higher energy shell, but this is an unstable position, and the electron quickly returns to the ground state.

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Answer:

Sediment moves from one place to another through the process of erosion. Erosion is the removal and transportation of rock or soil. Erosion can move sediment through water, ice, or wind. Water can wash sediment, such as gravel or pebbles, down from a creek, into a river, and eventually to that river's delta.

Explanation:

Erosion refers to the washing away or the removal of top soils/rocks by agents such as water, wind, etc.

Erosion is the removal of topsoils or rocks by agents of erosions. These agents include water, wind, waves, and ice.

In water/ice erosion, topmost soils or rocks are washed away and deposited somewhere else, usually in or at the mouth of nearby water bodies.

Wind erosion carries soils/rocks and deposits them somewhere else. The deposition accumulates over a period of time to form different landforms.

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2.0×10^5 C/mole  is his experimental value for faraday's constant if the student calculates that 800000 coulombs of charge were consumed in the production of the 4 moles of hydrogen

Q=nC

Q=charge

n=moles

C= faraday's constant

put values in equation

C=800000/ 4

C=200000=2.0×10^5 C/mole

The amount of electric charge needed to release one gram equivalent of any ion from an electrolytic solution is measured in faraday, also known as the faraday constant, a unit of electricity used in the study of electrochemical processes. It is named for the 19th-century English physicist Michael Faraday and equals 6.022140857 ×10^23 electrons, or 9.648533289 104 coulombs. It is used in electric solutions.

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The order of reaction for A in this reaction is 3

In the given chemical reaction, A(g) + B(g) → AB(g), the concentration of A is tripled while the concentration of B is held constant. As a result, the rate of reaction increases by a factor of 27. To determine the order of reaction for A, we can use the rate law expression.

The general rate law expression for this reaction is:
Rate = k[A]^m[B]^n

Since the concentration of B is held constant, we can focus on the change in concentration of A and its effect on the reaction rate:
Initial rate = k[A]^m
Final rate = k[3A]^m

The final rate is 27 times the initial rate:
27 * (k[A]^m) = k[3A]^m

Now, we can solve for the order of reaction (m) for A:
27 = (3A)^m / A^m
27 = 3^m

From this equation, we can see that m = 3, as 3^3 = 27. Therefore, the order of reaction for A in this reaction is 3, meaning the reaction rate is directly proportional to the cube of the concentration of A.

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The chemical progressively cools after heating. Another illustration of a substance is water..

What is specific heat, precisely?

The amount of energy required to elevate the temperature of 1 kilogram of a substance by 1 degree Celsius (°C) is known as specific heat. Since water has a higher specific heat than other substances, it requires more energy to raise its temperature.

In plain English, what's really specific heat capacity?

A pure substance's heating value per unit mass is referred to as its heat capacity, or just specific heat. It is represented in terms of J/kgK or, more accurately, J/kg°C and therefore is described as the amount of warmth required to raise the temperature pf 1 kg of a substance by 1 K.

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Chemistry's understanding of stoichiometry is crucial since it provides information on the yield of the reaction that is occurring.

We'll see a precipitation reaction in this lab (double replacement). When two soluble salts are combined, a reaction occurs that causes one product to precipitate while the other stays in solution. We will begin with known concentrations of calcium chloride and sodium carbonate.

Chemical Reaction Type: We have a double replacement reaction for this reaction. Balanced Approaches: This reaction involves two replacements, or displacements.

By combining solutions of calcium chloride and sodium carbonate to create the precipitate calcium carbonate, it is possible to make a straightforward example of how a precipitate is proof that a chemical reaction has occurred (CaCO3).

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The percent yield for the reaction is  99.79%.

The balanced equation for the reaction is:

C₃H₆ + HNO → C₃H₃N + H₂O

We need to find the theoretical yield of C₃H₃N first:

1 mole of C₃H₆ produces 1 mole of C₃H₃N

Moles of C₃H₆ = 180 g / 42.09 g/mol = 4.28 mol

Moles of C₃H₃N = 105 g / 53.07 g/mol = 1.98 mol

Therefore, C₃H₃N is the limiting reactant, and the theoretical yield is 1.98 mol.

To calculate the percent yield, we need to divide the actual yield by the theoretical yield and multiply by 100:

Percent yield = (actual yield / theoretical yield) x 100

Actual yield = 105 g

Theoretical yield = 1.98 mol x 53.07 g/mol = 105.22 g

Percent yield = (105 g / 105.22 g) x 100 = 99.79%

Therefore, the percent yield of the reaction is approximately 99.79%.

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Answer:

Because it is the same element but has different atomic mass

To calculate the work done on an object, we use the formula:

Work = Force × Distance × cos(theta)

where "Force" is the magnitude of the force applied, "Distance" is the distance over which the force is applied, and "theta" is the angle between the force and the direction of motion.

In this case, the force is 1,200 Newtons, the distance is 8 meters, and we'll assume the angle between the force and direction of motion is 0 degrees (meaning the force is applied in the same direction as the object is moving). Therefore:

Work = 1,200 N × 8 m × cos(0°)

Work = 9,600 J

So, you do 9,600 joules of work on the object.

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The correct answer is Neurotransmitters are chemical messengers that are essential for your body to function.

To affect another cell across a synaptic gap, a neuron produces a chemical signaling agent known as a neurotransmitter. Any significant organ, target cell, gland, or muscle cell that receives the signal might be another neuron as well. Neurotransmitters are released from synaptic vesicles in the synaptic cleft, where they may interact with receptors on the target cell. The neurotransmitter's impact on the target cell depends on the receptor to which it binds. From readily available, plentiful precursors like amino acids, which are regularly transformed in a few biosynthetic steps, several neurotransmitters are created.

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Answer:

Number 2 is Direction

Explanation:

The old answer for number four was incorrect

I apologize for the inconvenience but I do not have an answer that fits in the lines for number 4

Solid CO₂ sinks in liquid CO₂ and the triple point of CO₂ is at - 56.4 °C and 5.11 atm pressure. The sate of CO₂ exist at - 56.4 °C and 6 atm pressure is solid.

The triple point of the substance is the temperature and the pressure where all the three phase ( solid , liquid , gas ) of that substance co - exists.

given data is as follows :

temperature = - 56.4 °C  is the triple point temperature

Pressure = 5.11 atm is the triple point pressure

phase diagram of CO₂ , carbon dioxide is a positive slope for the curve. when the temperature is constant and we move to higher pressure , the CO₂ would be solid.

Thus, Solid CO₂ sinks in liquid CO₂ and the triple point of CO₂ is at - 56.4 °C and 5.11 atm pressure. The sate of CO₂ exist at - 56.4 °C and 6 atm pressure is solid.

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The specific heat of the metal is 0.214 J/g°C.

When a metal and water are mixed in a perfectly insulated container, they reach a final temperature through heat transfer. In this case, the initial temperature of the metal is 93.50°C, while the initial temperature of the water is 23.50°C. The final temperature of the mixture is 33.80°C.

To calculate the specific heat of the metal, we can use the principle of conservation of energy. The heat lost by the metal (Qmetal) is equal to the heat gained by the water (Qwater). The formula for heat transfer is:

Q = m * c * ΔT

Where:

Q is the heat transferred

m is the mass of the substance

c is the specific heat

ΔT is the change in temperature

Let's denote the specific heat of the metal as cm and the specific heat of water as cw. The heat lost by the metal can be calculated as:

Qmetal = cm * mmetal * (Tfinal - Tinitial_metal)

The heat gained by the water can be calculated as:

Qwater = cw * mwater * (Tfinal - Tinitial_water)

Since the container is perfectly insulated, the heat lost by the metal is equal to the heat gained by the water:

Qmetal = Qwater

cm * mmetal * (Tfinal - Tinitial_metal) = cw * mwater * (Tfinal - Tinitial_water)

Rearranging the equation, we can solve for the specific heat of the metal:

cm = (cw * mwater * (Tfinal - Tinitial_water)) / (mmetal * (Tfinal - Tinitial_metal))

Substituting the given values:

cm = (4.18 J/g°C * 105 g * (33.80°C - 23.50°C)) / (175 g * (33.80°C - 93.50°C))

After evaluating the expression, the specific heat of the metal is calculated to be approximately 0.214 J/g°C.

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