If you start with 29. 25 g of NaOH and 107 g of FeCl3, find the reaction yield and the limiting reactant. Show your work

The functions of copper and zinc are they act as the positive electrode and negative electrode respectively.

The functions of copper and zinc in the system with the wire connecting the Zn to the nail are as follows:

1. Copper acts as the positive electrode or the cathode in the system. It attracts the electrons from the zinc, which is the negative electrode or the anode.

2. Zinc acts as the negative electrode or the anode in the system. It loses electrons to the copper, which is the positive electrode or the cathode.

3. The wire connecting the zinc to the nail allows for the flow of electrons from the zinc to the copper. This creates an electric current, which is what powers the system.

In summary, the copper and zinc in the system with the wire connecting the Zn to the nail act as the positive and negative electrodes, respectively, and allow for the flow of electrons and the creation of an electric current.

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Answer:

oxygen should be present for burning to happen,

Answer:

A-Pacific Ocean

B-Arctic Ocean

C-Atlantic Ocean

D-Indian Ocean

E-Southern Ocean

Explanation:

got it right on edge 2020!!

Answer:

other guy is 100% correct

Explanation:

The lewis electron-dot diagram which represents the bonding in potassium iodide, KI is give in image attached.

The correct answer choice is option 1.

The lewis structure can simply be defined as those diagrammatic chemical representations which describes the bonding between atoms in a particular molecular structure of a chemical substance. From the context of the above given task, the structure is bonded by eight different electrons.

The importance of lewis electron-dot structures cannot be overemphasized. Some of its significances are as follows:

In conclusion, we can now confirm from the explanation given above that potassium iodide is solid chemical compound.

The complete image of the options of the question is also attached.

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The new volume of the bottle is 5.07 L.

It is a gas law that states the pressure decrease with the increase in the pressure.

By the formula

\(\rm P_1V_1= P_1V_2\)

Given that, volume1 is 2.3l

Pressure1 is 4 atm.

Pressure2 to 0.65 atm.

V2 is to find?

Putting the values in the equation

\(\rm 1.4\times 2.3 = 0.65 \times V_2\\\\V_2 = 5.07 L\)

Thus, the new volume of the bottle is 5.07 L.

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Answer:

Organelles.

An organelle in a cell is sometimes compared to an organ or organs in organisms.

Answer:

smoother and less jagged

Explanation:

The volume of 50.0 grams of sodium chloride is \(23.1481 mL.\)

Volume is a three-dimensional quantity that is used to measure the capacity of a solid shape.

To calculate the volume of 50.0 grams of sodium chloride, we need to use its density. The formula to calculate the volume is:

Volume = Mass / Density

Substituting the given values, we get:

Volume = 50.0 g / 2.16 g/cm³

Simplifying the equation, we get:

Volume = 23.1481 cm³

To convert the volume to milliliters, we can multiply it by 1 mL/1 cm³, which gives:

Volume = 23.1481 cm³ × 1 mL/1 cm³

Volume = 23.1481 mL

Therefore, the volume of 50.0 grams of sodium chloride is 23.1481 mL.

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Given :

• Molar mass of FeBr3 = 295.56 g/mol

• Mass of FeBr3 = 449 g

The balanced reaction is given as :

by stoichiometry , we can see that :

• 2 moles of FeBr3 produces 1 moles of Fe2S3

Therefore ;

• 1.52 mol of febr3 produces X Fe2S3

• X moles of FE2S3, = (1.52moles FeBr3 * 1 mol Fe2S3) /2 moles

FeBr3.

=0.755 moles

≈0.76 moles

• This means that 0.76 moles of Fe2S3 would be produced from the complete reaction of 449 g iron(III)bromide,

Out of the given options, the liquid that helps grow a tomato plant faster is a. water

Since the growth of its plant by planting it can be observed, tomatoes, which include a living system, are actually a part of a more complicated system. Despite the fact that tomato fruits are filled with small seeds, if they fall to the ground, they will immediately grow.

Water is the substance that will enable a tomato plant to grow more quickly. Water is crucial for plant growth because it keeps plants hydrated and makes it easier for them to absorb nutrients through their roots. It promotes photosynthesis, stimulates the movement of nutrients and minerals throughout the plant, and keeps plant cells hard and swollen.

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Complete Question:

Which liquids will help grow a tomato plant faster ?

a. water,

b. coffee,

c. milk, and

d. fertilizer

e. dissolved water

Answer:

36 eggs

Explanation:

12 eggs in each carton

12 + 12 + 12 = 36 eggs

or 3 * 12 = 36 eggs

Hope this helps, have a nice day/night! :D

Answer:

2Li + ZnBr2 ->2LiBr + Zn

3Ca + Al2O3 ->2Al + 3CaO

Explanation:

Spontaneous reactions are reactions that can happen on their own. For a spontaneous reaction to occur, a metal that is higher in the activity series must displace a metal that is lower in the activity series from its solution and not vice versa.

If we look at the two reactions selected in the answer, lithium is above zinc in the activity series and calcium is above aluminum in the activity series hence the two reactions occur spontaneously.

Answer:    36.9 g

Explanation:

P4 + 5O2 = P4O10  Balanced equation

moles P4 present = 23.9 g x 1 mole/123.88 g = 0.193 moles

moles O2 present = 20.8 g x 1 mol/32 g = 0.65 moles O2

From balanced equation, mole ratio O2 : P4 is 5:1.  Is 0.65 moles O2 5x 0.193 moles?  NO.  You don't have enough O2.

O2 is limiting in this reaction.

theoretical moles of P4O10 = 0.65 moles O2 x 1 mole P4O10/5 moles O2 = 0.13 moles P4O10

mass of P4O10 produced = 0.13 moles x 283.9 g = 36.9 g

According to the give percent yield, the   observed yield of P₄O₁₀ is 9.514 g .

Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.

In cases where percent yield is over 100% it indicates that more sample is recovered than the predicted amount.This condition arises when there are other simultaneous reactions taking place leading to the formation of product. It can also arise if there is incomplete removal of impurities from the sample .

In the given example, observed yield is calculated by first calculating theoretical yield,which in this case is as follows, 123.88 g phosphorous gives 283.88 g of  P₄O₁₀

Hence, 6.20 g of phosphorous will produce 6.20×283.88/123.88=14.20 g.

Now, the observed yield is calculated as, percent yield×theoretical yield/100=67×14.20/100=9.514 g.

Thus, the observed yield of  P₄O₁₀ is 9.514 g.

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Based on the data provided, the (a) Specific volume at the final state = 0.25 m³/kg ; (b) Work done by CO = 50.4 KJ ; (c) Heat transfer to CO = 100.4 KJ ; (d) The direction of heat transfer = from paddle wheel to CO.

Given data :

Mass of carbon monoxide (CO) = 4 kg

Volume of the tank = 1 m³

Energy transferred to CO by paddle wheel (W) = 14 W

Time = 1 hr

Increase in the specific internal energy of carbon monoxide (CO) = 10 kJ/kg

(a) Specific volume at the final state, in m³/kg can be calculated as follows :

Using the first law of thermodynamics : Q = ∆U + W …………………(1)

where,

Q = Heat transferred to CO

∆U = Change in internal energy of CO

W = Work done by CO

∆U = m × u₂ - m × u₁

where, m = Mass of CO, and u₂ = Final specific internal energy of CO

u₁ = Initial specific internal energy of CO

∴ u₂ = u₁ + (∆U / m)= u₁ + (10 × 10³ / 4) ………………(2)

Using ideal gas equation:P V = m R T

where,

P = Pressure of CO

V = Volume of CO

T = Temperature of CO = Constant

R = Gas constant

∴ Specific volume (v) of CO can be given by : v = V / m …………………(3)

(b) Work done by CO, W = Energy transferred to CO by the paddle wheel = 14 × 1 × 3600 ………………(4) = 50400 J

Heat transfer to CO, Q = ∆U + W - ∆K.E - ∆P.E

There is no change in kinetic energy and potential energy of the system.

Hence,∆K.E = ∆P.E = 0

∴ Q = ∆U + W ………………….(5)

Solving equations (2), (3), (4) and (5) we get : v = V/m = 1/4 = 0.25 m³/kg

Work done, W = 50400 J = 50.4 KJ

(c) Heat transferred, Q = ∆U + W= (4 × 10 × 10³) / 4 + 50400 = 100400 J = 100.4 KJ

(d) Heat is transferred from paddle wheel to the CO.

Therefore, the direction of heat transfer is from paddle wheel to CO.

Thus, the required answers are : (a) 0.25 m³/kg ; (b) 50.4 KJ ; (c) 100.4 KJ ; (d) from paddle wheel to CO

The complete question is : Four kilogram of carbon monoxide (CO) is contained in a rigid tank with a volume of 1 m3. The tank is fitted with a paddle wheel that transfers energy to the CO at a constant rate of 14 W for 1 h. During the process, the specific internal energy of the carbon monoxide increases by 10 kJ/kg. If no overall changes in kinetic and potential energy occur, determine

(a) the specific volume at the final state, in m3/kg.

(b) the energy transfer by work, in kJ.

(c) the energy transfer by heat transfer, in kJ.

(d) the direction of the heat transfer.

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Answer:

Mass is a Physical quantity

Explanation:

It is a fundamental physical quantity because it cannot be derived from other physical quantities.

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.

.

Hope it helps

Answer:

2.5M

Explanation:

Molarity is the measure of the molar concentration of a solution. It is calculated using the formula below:

Molarity = n/V

Where;

n = number of moles (mol)

V = volume (L)

According to the information about Calcium chloride (CaCl2) provided in this question;

n = 0.5moles

M = 0.20M

Molarity = 0.5/0.2

Molarity = 2.5M

Answer:

Alternating magnetic pattern in the rocks of the ocean floor

Explanation:

The rocky sea floor on either side of mid-ocean ridges has a matching pattern of magnetic stripes. This information provides evidence for sea-floor spreading. The matching striped pattern shows that Earth’s polarity was recorded on either side of the ridge as lava oozed from the ridge and cooled.  

Answer:

Alternating magnetic pattern in the rocks of ocean floor.

Explanation:

The reaction that will shift to the right in response to a decrease in volume is:

2HI (g) ⇄ H₂ (g) + I₂ (g)

When the volume of the system is decreased, the pressure increases. According to Le Chatelier's principle, the system will shift in the direction that reduces the number of moles of gas to counteract the increase in pressure.

In this reaction, there are two moles of gas on the left side (2HI) and only one mole of gas each on the right side (H₂ and I₂). Therefore, by decreasing the volume and increasing the pressure, the reaction will shift to the right, favoring the formation of more H₂ and I₂ and reducing the number of moles of gas and equilibrium.

The reaction that will shift to the right in response to a decrease in volume is:

2HI (g) ⇄ H₂ (g) + I₂ (g)

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The false statement about methane degrades the ozone layer. Methane is a greenhouse gas that contributes to global warming. It is produced through natural processes, as well as human activities. Therefore, option A is correct.

Methane is a greenhouse gas and is known to contribute to global warming. It is produced through natural processes, as well as human activities. Methane is the primary component of natural gas, making statement C true.

It is released from various sources, including the decomposition of organic matter, such as sewage and manure, making statement B true. However, it does not degrade the ozone layer, which is primarily affected by substances such as chlorofluorocarbons (CFCs) and halons.

Methane has a much higher global warming potential compared to carbon dioxide over a shorter time frame, which makes it a significant contributor to climate change.

Its presence in the atmosphere traps heat, leading to an increase in temperatures on Earth. Reducing methane emissions is crucial for mitigating climate change.

In conclusion, while methane is a greenhouse gas and is produced from sewage and manure, it does not degrade the ozone layer. Therefore, option A is correct.

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The correct statement regarding specific gravity of a material is b. it is defined as the density of a material divided by the density of water.

Specific gravity is a dimensionless quantity which compares the material's density to that of water, allowing us to determine if the material will float or sink in water.

It does not have units of g/mL, as it is a ratio of densities, which means the units will cancel out, leaving no units for specific gravity. So, option a is incorrect, and option c is also not valid as it includes option a. Thus, the correct choice is option b, as specific gravity is indeed the ratio of the material's density to water's density.

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CH4 is limiting reagent and H20 remains after the reaction.

A limiting reagent is a reactant that entirely consumes itself before any other reactants are used up in a chemical reaction, hence restricting the amount of product that may be created. It can be found by comparing the proportions of each component in the reaction and its stoichiometry. Once the limiting reagent has been determined, the amount of product that can be generated can be computed using the reaction's stoichiometry.

\(CH_4+2O_2- > CO_2+2H_2O\)  

number of moles of CH4= given mass/atomic mass

=> 16/16

so the number of moles of CH4 is 1

number of moles of O2 = 64/32

=2

so CH4 1 mole get vanished after the reaction and the gases like CO2 and O2 fly away so the limiting reagent is CH4  

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The use of \(CH_3NH_2\) with an acid catalyst is a common method for converting an aldehyde into an imine (Schiff base).

This reaction is known as the Schiff base formation reaction and involves the addition of the amine group of \(CH_3NH_2\) to the carbonyl group of the aldehyde to form an intermediate hemiaminal. The acid catalyst then facilitates the elimination of water, resulting in the formation of the imine. This reaction is important in organic chemistry as it allows for the synthesis of a wide variety of imines, which are versatile intermediates in the preparation of many organic compounds. When \(CH_3NH_2\) (methylamine) reacts with an aldehyde in the presence of an acid catalyst, it forms an imine (Schiff base) through a process called nucleophilic addition. The catalyst accelerates the reaction without being consumed, while the aldehyde is converted into the imine, which contains an N-R (nitrogen-substituted) group.

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The strength of the  digital signal sent using electromagnetic waves weakens as it travels farther form is source.

The electromagnetic waves are waves that are able to travel through space. The electromagnetic waves do not require any single medium for propagation. The are able to move through a vacuum.

However, we know that the distance along which a signal travels affects its strength. In other words if the signal travels through a long range the strength may be weakened.

As such, the strength of the  digital signal sent using electromagnetic waves weakens as it travels farther form is source.

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Answer:

decreasing pressure will shift the reaction toward the reactants

The CH4 molecules have nonpolar covalent bonds. This indicates that the dispersion forces (London dispersion forces) will be the only intermolecular forces acting between the CH4 molecules.

Intermolecular forces are those forces that are present between the molecules. They are the attractive forces between the neighboring molecules. They are responsible for keeping the molecules together. They also help to determine the phase of a substance. There are several types of intermolecular forces that exist:Dispersion forces: These are the weakest of all intermolecular forces.

                                They exist in all molecules, both polar and nonpolar molecules. These forces arise due to the shifting of electrons. Dipole-dipole forces: These forces arise due to the attraction between the negative and positive ends of two polar molecules. These forces are stronger than dispersion forces.Hydrogen bonding: This is a type of dipole-dipole force, which exists when hydrogen is directly bonded with fluorine, nitrogen, or oxygen. These are the strongest intermolecular forces.

                                    Example: CH4The CH4 molecule has a tetrahedral shape. It has four hydrogen atoms attached to a central carbon atom. It is a nonpolar molecule because the electronegativity difference between carbon and hydrogen is very low. Since it is a nonpolar molecule, only the London dispersion forces exist between the CH4 molecules. Therefore, the answer is, "Dispersion forces" or "London dispersion forces."

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The reaction is an example of a decomposition reaction in which Zinc Carbonate is decomposed into two products that is Zinc oxide and Carbon dioxide.

Zinc carbonate is an odorless and white sand-like solid. It is insoluble in water and is used in cosmetics, ointments, porcelain, pottery and rubber.

When Zinc carbonate is heated, it produces Zinc oxide and Carbon dioxide. When white powdery solid Zinc carbonate is heated, it turns yellow.

Carbon dioxide gas evolved is confirmed by passing the gas over lime water and it turns the lime water milky.

The reaction is:  ZnCO3 --> ZnO + CO2

The reaction is an example of a decomposition reaction in which Zinc Carbonate is decomposed into two products that is Zinc oxide and Carbon dioxide.

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The ionic percentage of bonding between hydrogen and oxygen within a water molecule is approximately 29.5%. None of the given options (33%, 38%, 42%, 52.3%) match the calculated value.

To determine the ionic percentage of bonding between hydrogen and oxygen within a water molecule, we need to compare the electronegativity difference between the two atoms. The electronegativity difference is calculated by subtracting the electronegativity of hydrogen (2.1) from the electronegativity of oxygen (3.5):

Electronegativity difference = 3.5 - 2.1 = 1.4

The ionic percentage of bonding can be estimated using the following empirical formula:

Ionic percentage = [1 - exp(-0.25 * electronegativity difference)] * 100

Plugging in the value for the electronegativity difference, we get:

Ionic percentage = [1 - exp(-0.25 * 1.4)] * 100

≈ [1 - exp(-0.35)] * 100

≈ [1 - 0.705] * 100

≈ 29.5%

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Answer:

2Al + 3FeO->Al2O3+3Fe

Explanation:

plug in those numbers to balence the equation and yes Al2O3 does not have a number in front

Answer:

2Al +3FeO = 1 Al2O3 + 3Fe

Explanation:

you need 2 al on the left to get al2 on the right, and you need 3 o on the left to get o3 on the right. there's still 3 fe left over, so that's what you put there.