How many grams of Carbon are needed to completely react with 125g of Iron oxide, Fe2O3 ?Equation: Fe2O3 + 3C —> 2Fe + 3CO

To determine the temperature of the air inside the tire when the pressure increases to 87.3 kPa, we can use the ideal gas law equation:

PV = nRT

Where:

P = pressure

V = volume

n = number of moles

R = gas constant

T = temperature

Assuming the volume of the tire remains constant, we can rearrange the equation as follows:

P₁/T₁ = P₂/T₂

Where:

P₁ = initial pressure (82.0 kPa)

T₁ = initial temperature (26.0 °C + 273.15 K) [converting Celsius to Kelvin]

P₂ = final pressure (87.3 kPa)

T₂ = final temperature (unknown)

Substituting the values into the equation:

82.0 kPa / (26.0 °C + 273.15 K) = 87.3 kPa / T₂

Now, let's solve for T₂:

T₂ = (87.3 kPa * (26.0 °C + 273.15 K)) / 82.0 kPa

Calculating the expression:

T₂ ≈ 299.19 K

To convert this temperature back to Celsius:

T₂ ≈ 299.19 K - 273.15 ≈ 26.04 °C

Therefore, the temperature of the air inside the tire, when the pressure increases to 87.3 kPa, is approximately 26.04 °C.

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The mass of oxygen that is required for this reaction is 0.15 g.

We know that we could use the stoichiometry of the reaction to be able to obtain the relationship between the reactants and the products. We only have to ensure that the reaction equation as written is balanced. In this case, we have; \(4Fe^{2+}(aq) + 3O_{2} ---- > 2Fe_{2} O_{3}\).

Now the number of moles of the iron is obtained as;

85/1000 L * 0.0750 M = 0.0064 moles

Now;

4 moles of iron II reacts with 3 moles of oxygen

0.0064 moles reacts with 0.0064 moles * 3 moles/4 moles

= 0.0048 moles

Mass of oxygen consumed =  0.0048 moles * 32 g/mol = 0.15 g

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Answer:

24.8g of fuel

Explanation:

while

\(C_{water}=4180j/kg*k\)

\(m=\frac{2.7*4180*(100-21)}{36*1000}=24.8g\)

Answer:

the answer is 100 cm.

Explanation:

this will help you

a) The balanced equation for the reaction would be as follows:

\(2 Al(OH)_3 + 3 H_2SO_4 ---> Al_2(SO_4)_3 + 6 H_2O\)

b) The mole ratio of aluminum hydroxide to sulfuric acid is 2:3. This means that every 1 mole of the aluminum hydroxide would require 1.5 moles of sulfuric acid.

0.5 mole aluminum hydroxide would require:

         0.5 x 3/2 = 0.75 moles of sulfuric acid.

But only 0.500 moles of sulfuric acid is present. Thus, the limiting reagent is sulfuric acid.

c) With 0.5 moles sulfuric acid, the mole of aluminum hydroxide required would be:

             0.5 x 2/3 = 0.33

Excess moles of aluminum hydroxide = 0.5 - 0.33

                                                              = 0.17 moles

d) The mole ratio of sulfuric acid to aluminum sulfate produced is 3:1. With 0.5 moles sulfuric acid, the mole of aluminum sulfate produced would be:

        0.5 x 1/3 = 0.17 moles

But the percentage yield is 77%

   77/100 x 0.17 = 0.13 moles

Thus, the moles of aluminum sulfate that would be obtained with a percentage yield of 77% would be 0.13 moles.

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Explanation:

hsbus r did iedj iadj sis aj sis dj akd bzaid ks akr ka he k sits wk do that s

If I put you on a goat

Put you in some water

Now you’re gonna float

The reaction shown uses the notation for atomic number and mass number on the elements.

The bottom left number is the atomic number and it is related to which is the element. This number accounts just for the number of neutrons in the element.

The top left number is the mass number and it accounts for the number of particles that have considerable mass. This number accounts for the number of protons and neutrons.

We can't loss any particles in a nuclear reaction, so we have to count how many of each we have at start and at the end we must have the same.

At the start we have ₁²H and ₁³H.

The first, ₁²H, has mass number 2 and atomic number 1. The atomic number is the same as the number of protons, so it has 1 proton. the mass number is the sum of the number of protons and neutrons. Since we have mass number 2 and 1 proton, the other has to be a neutron.

So, there is 1 proton and 1 neutron.

The second, ₁³H, has mass number 3 and atomic number 1. So, the same number of protons, 1 proton, but now we have 2 neutrons, because we have 3 as mass number.

So, there is 1 proton and 2 neutrons.

At the end we have energy, which won't count any particles, we have an unknown particle, X, and ₀¹n.

The ₀¹n has atomic number 0, so there are no protons, that is, the mass number is all from neutrons. Since the mass number is one, we have 1 neutron. This is actually a single neutron, as noted by the "n".

Now, at the start we have:

1 proton + 1 proton = 2 protons

1 neutron + 2 neutrons = 3 neutrons

At the end we have 1 neutron and the rest must be all in X.

That is, all 2 protons have to be in X and 2 of the 3 starting neutrons must be in X.

So, X must have atomic number 2 (since it has 2 protons) and mass number 2 + 2 = 4 (since it has 2 protons and 2 neutrons).

Consulting a periodic table, we see that the element that has atomic number 2 is helium, He.

Thus, the particle is:

So:

Mass number: 4

Atomic number: 2

Chemical symbol: He

Answer: is that a question or

Explanation:

Answer:

its c

Explanation:

Answer:

the volume in mL is 15

Explanation:

The computation of the volume in mL is shown below:

As we know that

N = nM

where

N denotes the normality

n denotes the number of equivalents

M denotes the molarity

Also

For NaOH , N = M

Now

M× V_1 = N × V_2

V_1 = N × V_2 ÷ M

= 0.09000 N × 1.0 L ÷ 6.0 M

= 15 mL

hence, the volume in mL is 15

Sedimentation, filtration, and coagulation are the treatments that will help remove contaminants from minerals or from the pipes carrying water from a source.

Sedimentation is a process in which suspended particles settle out of water. It is one of the most basic techniques for removing particles from water. As particles settle, they become trapped in the bottom of a container or settle to the ground in an outdoor setting

Filtration is a method of removing particles from a fluid. It is a physical or chemical separation method that separates solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.

Coagulation is the process of using chemicals to remove contaminants from water. By creating a chemical reaction, coagulation destabilizes particles and causes them to clump together. This helps to remove the contaminants from the water.

Disinfection is the process of eliminating or destroying pathogens that cause infection. Disinfection eliminates harmful microorganisms by destroying or inactivating them. The disinfectant is a chemical or physical agent that is used to destroy or inactivate harmful microorganisms.

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Step 1 - Finding the relation in moles in the reaction equation

As we have previously seen working on a similar problem, the bigger numbers that come before the formula of the substance expresses a proportion in moles between all the reactants and the products.

The reaction given in this exercise is:

Note that 2 moles of K react with 2 moles of H2O, producing 1 mole of H2 and 2 moles of KOH.

Step 2 - Converting a relation in moles to a relation in grams

We can convert this relation in moles to a relation in grams by multiplying each number of moles by the molar mass of each substance. The molar masses are:

Converting to grams:

We can state thus that 78g of K react with 36g of water, producing 2g of H2 and 112g of KOH. This is a fixed proportion, like a cake recipe.

Step 3 - Using the information to answer the exercise

1) Note that 2 moles of K produces 2 moles of KOH. Therefore, we would need exactly 2 moles of K.

2) Note that 2 moles of K, as we have previously calculated in step 2, corresponds to 78 g.

3) Note that 2 moles of K produces 1 mole of H2. Since this is a fixed proportion, we can set the following relation:

It would be produced thus 1.5 moles of H2.

4) As we have seen in 3), we would produce 1.5 moles of H2. Since its molar mass is 2g/mol, we would produce, in grams:

3g of H2 would be produced.

5) Note that 2 moles of H2O produce 1 mole of H2. In grams, this corresponds to 36g of water produce 2g of H2.

Answer:

Note that 2 moles of H2O produce 1 mole of H2. In grams, this corresponds to 36g of water produce 2g of H2

Explanation:

Answer:

Computers are more useful for quick calculations.

Computers are easier to transport to remote locations.

Computers have lower power consumption.

Computers hold larger amounts of data.

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Answer:

Substance II would heat up fastest

It would be better for cookwares to have lower specific heat capacity to decrease cooking time

Explanation:

Here, we want to compare the specific heat capacity of the two substances

From the question, the higher the specific heat capacity, the higher the needed energy to raise the temperature

Since substance 2 has a lower specific heat capacity, it will heat up faster

Cookwares should have a lower specific heat capacity so as to decrease cooking time. If they had high specific heat capacity, cooking in them would take time which would not be desirous

The standard enthalpy change (∆H°rxn) for the given reaction is -38.0 kJ/mol. This negative value indicates that the reaction is exothermic, meaning that it releases heat to the surroundings.

The standard enthalpies of formation (∆Hf°) for the reactants and products involved in the reaction are: ∆Hf°[NO2(g)] = +33.2 kJ/mol. ∆Hf°[H2O(l)] = -285.8 kJ/mol. ∆Hf°[HNO3(aq)] = -207.2 kJ/mol. ∆Hf°[NO(g)] = +90.4 kJ/mol. We can use these values to calculate the standard enthalpy change (∆H°) for the reaction using the following equation:

∆H°rxn = Σn∆Hf°(products) - Σm∆Hf°(reactants) where n and m are the stoichiometric coefficients of the products and reactants, respectively. Substituting the values, we get:∆H°rxn = [2 × ∆Hf°(HNO3(aq))] + [∆Hf°(NO(g))] - [3 × ∆Hf°(NO2(g))] - [1 × ∆Hf°(H2O(l))]. ∆H°rxn = [2 × (-207.2 kJ/mol)] + [90.4 kJ/mol] - [3 × (+33.2 kJ/mol)] - [1 × (-285.8 kJ/mol)]. ∆H°rxn = -414.4 kJ/mol + 90.4 kJ/mol - 99.6 kJ/mol + 285.8 kJ/mol. ∆H°rxn = -38.0 kJ/mol

Therefore, the standard enthalpy change (∆H°rxn) for the given reaction is -38.0 kJ/mol. This negative value indicates that the reaction is exothermic, meaning that it releases heat to the surroundings.

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Phosphatidylserine is a type of phospholipid that is mainly found in cell membranes. Its structure is made up of two fatty acid chains, a phosphate group, a serine molecule, and a glycerol molecule.

The fatty acid chains are hydrophobic, meaning they repel water, while the phosphate group and serine molecule are hydrophilic, meaning they attract water.

The glycerol molecule acts as a bridge that connects the two fatty acid chains to the phosphate group and serine molecule.
The structure of phosphatidylserine is important for its function in the cell membrane.

Because of the hydrophobic and hydrophilic components of its structure, phosphatidylserine is able to form a lipid bilayer, which is a barrier that separates the inside of the cell from the outside environment.

The hydrophilic heads of the phosphatidylserine molecules face outward and interact with water, while the hydrophobic tails face inward and repel water.
Phosphatidylserine also plays a role in cell signaling and apoptosis, which is programmed cell death.

It acts as a signaling molecule by binding to proteins that are involved in cellular pathways.

In addition, phosphatidylserine is translocated to the outer leaflet of the cell membrane during apoptosis, which signals to immune cells that the cell is ready to be removed.
In conclusion, the structure of phosphatidylserine is made up of two fatty acid chains, a phosphate group, a serine molecule, and a glycerol molecule. Its hydrophobic and hydrophilic components allow it to form a lipid bilayer in cell membranes, and it also plays a role in cell signaling and apoptosis.

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Answer:

lungs

Explanation:

The concentration of CO2 in club soda is approximately 1.1964 g/L.

To find the concentration of CO2 in club soda, we need to use the stoichiometry of the reaction and the volume and concentration of the NaOH solution used.

The balanced equation for the reaction is:

CO2(aq) + 2NaOH(aq) → Na2CO3(aq)

From the stoichiometry of the equation, we can see that 1 mole of CO2 reacts with 2 moles of NaOH. Therefore, the moles of CO2 can be calculated using the volume and concentration of NaOH solution used.

Given that 32.14 mL of 0.04202 M NaOH solution was used, we can calculate the moles of NaOH:

moles of NaOH = volume (L) × concentration (M)

moles of NaOH = 32.14 mL × 0.04202 mol/L

moles of NaOH = 0.001351 mol

According to the stoichiometry of the equation, 1 mole of CO2 reacts with 2 moles of NaOH. Therefore, the moles of CO2 can be calculated as:

moles of CO2 = (moles of NaOH) / 2

moles of CO2 = 0.001351 mol / 2

moles of CO2 = 0.0006755 mol

Now, we need to convert the moles of CO2 to grams. The molar mass of CO2 is approximately 44.01 g/mol.

mass of CO2 = moles of CO2 × molar mass of CO2

mass of CO2 = 0.0006755 mol × 44.01 g/mol

mass of CO2 = 0.02979 g

Finally, we need to express the concentration of CO2 in club soda in g/L. We are given that the sample of club soda used is 25.00 mL.

concentration of CO2 = (mass of CO2) / (volume of club soda in L)

concentration of CO2 = 0.02979 g / (25.00 mL × 0.001 L/mL)

concentration of CO2 = 1.1964 g/L

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The daughter nucleus (nuclide) produced is \(\frac{209}{79} Au\)

When an alpha decay occurs, the daughter nucleus has its atomic number less than that of the parent nucleus by two units and its mass number less than that of the parent nucleus by four units.

If we write the nuclear equation, we will have;

\(\frac{213}{83} Bi -----> \frac{209}{79} Au + \alpha\)

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Answer:

For example, in the food chain, plants move carbon from the atmosphere into the biosphere through photosynthesis.Animals that eat plants digest the sugar molecules to get energy for their bodies. Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle.

Explanation:

Answer: 10

Explanation: 10 + 4.1 = 10

A gas exerts a pressure of 4.1 atm at 300K. Therefore, 13.1 atm is the pressure of the gas at 1010K.

The force delivered perpendicularly to an object's surface per unit volume over which this force is dispersed is known as pressure. The pressure as compared to the surrounding air is known as gauge pressure.

Pressure is expressed using a variety of units. Some of these come from dividing a unit of force by an area unit the traditional pressure measurement with in imperial and U.S. is the pound-force every square inch, whereas the SI pressure measurement, also called the pascal, becomes a newton per square meter.

P₁/T₁=P₂/T₂    

4.1/300=P₂/1010

P₂ =13.1 atm

Therefore, 13.1 atm is the pressure of the gas at 1010K.

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Answer:

P₂ = 3.24atm

Explanation:

The answer responses to  the structures shown in the diagram are:

A. chromosomes

C. They would be the same.

B. They are in pairs because each one comes from a different parent.

The chromosomes are in pairs because humans have a diploid number of chromosomes, meaning they have two sets of chromosomes, one inherited from each parent.

The nucleus is important in eukaryotic cells and has many important parts that help the cell work properly. There are some parts inside cells called the nuclear membrane, nucleoplasm, nucleolus, and chromatin. Chromatin is made up of DNA and other proteins.

Every part of a person's body has the same genes, but the way they are organized can be different in different types of cells. The chromosomes in our skin cells might not be the same as the chromosomes in our muscle cells, even if they come from the same person.

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Identify the structures shown.

A. chromosomes

B. mitochondria

C. nuclei

D. vacuoles

C

Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.

A. There would be longer.

B. They would be shorter.

C. They would be the same.

D. They would be different.

Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.

A. There would be longer.

B. They would be shorter.

C. They would be the same.

D. They would be different.

Explain why the structures are in pairs.

A. They aren't in pairs.

B. They are in pairs because each one comes from a different parent.

C. This cell is making a copy of itself.

D. The cell always has 2 copies in case 1 is damaged.

The equation that relates A and W, considering the desired 15% acetic acid concentration, is 3W = 2.55M.

The equation A = (3/17)W represents the relationship between the mass of acetic acid (A) and the mass of water (W) in the mixture. It states that the mass of acetic acid is equal to three seventeenths (3/17) of the mass of water.

Since the company wants the acetic acid to be 15% of the total mass of the mixture, we can set up another equation to represent this requirement. Let M be the total mass of the mixture. The mass of acetic acid (A) is 15% of the total mass, so we have A = 0.15M.

Now we can substitute A in terms of W from the first equation into the second equation: (3/17)W = 0.15M. We can simplify this equation by multiplying both sides by 17 to get 3W = 2.55M.

This equation allows the company to calculate the mass of water (W) required for a given mass of acetic acid (A) to maintain the desired concentration in the mixture.

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A construction of the line graph for the total volume of sulphuric acid and meter reading data points is shown in the image attached below.

In Mathematics and Statistics, a line plot can be defined as a type of graph that is used for the graphical representation of data set above a number line, while using crosses, dots, or any other mathematical symbol.

In this scenario and exercise, we would make use of an online graphing calculator (tool) to graphically represent the total volume of sulphuric acid and meter reading data points on a line plot as shown in the image attached below.

In conclusion, we can reasonably infer and logically deduce that the meter reading is equal to 0 mA when the total volume of sulphuric acid is 30 mL.

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Answer:

they will have 100% kinetic energy

Explanation:

all the potential energy has been used when it is at the bottom of the ramp

Answer: Chemical energy

Explanation:

Answer:

a

Explanation: