What is the main impurity collected with oil

Answer:

0.500-Molarity solution

Explanation:

The moles of the compound is given as the number of atomic mass unit in the compound. The moles of potassium nitrate in the solution are 0.6 mol

The molarity is the concentration unit, and it can be defined as the moles of compound present in the liter of solution.

The molarity can be expressed as:

\(\rm Molarity=\dfrac{Moles}{Volume(L)}\)

The given potassium nitrate solution has, molarity = 2 M

The volume of the solution is 0.3 L.

Substituting the values for the moles of the compound:

\(\rm 2\;M=\dfrac{Moles}{0.3\;L} \\\\Moles=2\;\times\;0.3\;mol\\Moles=0.6\;mol\)

The moles of potassium nitrate in 2 M solution is 0.6 mol.

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The concentration of iron used in the titration : 0.009 M

Given

Reaction

Cr₂O₇²⁻ + 6Fe²⁺ + 14H⁺ ⇒ 2Cr³⁺ + 6Fe³⁺ + 7H₂O

0.0093 mol/L potassium  dichromate

200 cm³ of dilute acid, 25cm³   was used in the titration.

Required

the concentration of iron

Solution

Titration formula

C₁V₁n₁=C₂V₂n₂⇒ From equation : n₁=6n₂(1=Cr₂O₇, 2=Fe)

titration average : 33+32.05+32.15+32.1 / 4 = 32.325 cm³(ml)

25 cm³ of iron solution used in titration :

\(\tt V_1=32.325~ml\\\\V_2=25~ml\\\\C_1=0.0093~M\\\\\\\\C_1.V_1.n_2=C_2.V_2.n_1\\\\0.0093\times 32.325\times 6=C_2\times 25\times 1\\\\C_2=0.07215~M\)

Dilution(25 ml from 200 ml iron solution)

\(\tt C_2.V_2=C_1.V_1\\\\0.007215\times 25=C_1\times 200\\\\C_1=0.009~M\)

Object Action to Release Energy Energy Transformation

Flashlight Press the switch Electric Energy → Light Energy

Chocolate Consume or melt Chemical Energy → Thermal Energy

Gas Ignite or burn Chemical Energy → Thermal Energy

Dynamite Detonate Chemical Energy → Mechanical Energy + Thermal Energy + Sound Energy + Light Energy

Olympic diver Jump or dive Potential Energy (Gravitational) → Kinetic Energy (Mechanical)

on platform  

Match Strike against a rough surface Chemical Energy → Thermal Energy + Light Energy

Stretched elastic band Release one end Elastic Potential Energy → Kinetic Energy (Mechanical)

Flashlight: To release the stored energy in a flashlight, you need to press the switch. This action completes an electrical circuit, allowing the electric energy stored in the battery to flow through the bulb, transforming into light energy.

Chocolate: Consuming or melting chocolate releases its stored energy. When you eat chocolate, it undergoes a chemical reaction in your body, breaking down the complex molecules and converting the chemical energy stored in the chocolate into thermal energy, providing you with warmth.

Gas: The stored energy in gas can be released by igniting or burning it. When gas reacts with oxygen in the presence of heat or a flame, a chemical reaction occurs, converting the chemical energy stored in the gas into thermal energy and producing light and heat.

Dynamite: To release the stored energy in dynamite, it needs to be detonated. When detonated, the chemical energy stored in dynamite rapidly transforms into various forms of energy, including mechanical energy (shockwave and debris movement), thermal energy (from the explosion heat), sound energy (from the blast), and light energy (from the explosion flash).

Olympic diver on platform: The stored energy in an Olympic diver on a platform is gravitational potential energy. To release this energy, the diver needs to jump or dive off the platform, converting the potential energy into kinetic energy as they descend, eventually entering the water.

Match: To release the stored energy in a match, you need to strike it against a rough surface. This action causes a chemical reaction in the match head, converting the chemical energy stored in the match into thermal energy and light energy, resulting in a flame.

Stretched elastic band: Releasing one end of a stretched elastic band allows it to return to its original shape, converting the stored elastic potential energy into kinetic energy. As the elastic band snaps back, it moves and vibrates, exhibiting mechanical energy.

These examples demonstrate different energy transformations, including chemical energy being converted to thermal energy, electrical energy transformed into light energy, potential energy being converted to kinetic energy, and elastic potential energy being converted to mechanical energy.

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The volume of the rectangle has been given by the product of length, breadth, and height. The mass of the air with a density of 1180 g/m³ is 708.57 gms.

The density of the substance has been known to be given by the mass's ratio to the volume. The formula for density is given as,

Density = Mass ÷ Volume

Given,

Density = 1180 g/m³

The volume of the rectangle = L×B×H

Substituting the values above,

Mass = Density × Volume

M = 1180 × 1.2 × 10⁻² × 8.34 × 10¹ × 6.0 × 10⁻¹

= 708.57 gm

Therefore, the mass of the air is 708.57 gms.

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Answer:

6000N

Explanation:

f= ma

f= 2000kg×3mls2

f=6000N

Answer:

6000 N

Explanation:

Given,

Mass= 2000 kg

Acceleration= 3 m/s²

Force= ?

Force= mass* acceleration

Force= 2000* 3 = 6000 N

Therefore, the force possessed by the car is 6000 N

Could Future Homes on the Moon and Mars Be Made of Fungi best summary of this excerpt is to grow habitats in space, fungal mycelia have to eat cyanobacteria for energy

Fungi are eukaryotic organisms that include microorganisms such as yeasts and moulds and mushrooms

And here according to the data fungal mycelia is a lifeform that has to eat and breathe that's where something called cyanobacteria comes in a kind of bacterium that can use energy from the Sun to convert water and carbon dioxide into oxygen and fungus food then the best describe for this concept is to grow habitats in space, fungal mycelia have to eat cyanobacteria for energy because in the space to grow fungal mycelia because it is the lifeform and have to eat cyanobacteria that give energy from the sun

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Answer: \(1s^22s^22p^63s^23p^64s^2\)

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies where orbital with higher value of (n+l) has higher energy as compared to orbital having lower (n+l) value. Thus the electronic configuration for calcium with atomic number of 20 and hence containing 20 electrons is :

\(Ca:20:1s^22s^22p^63s^23p^64s^2\)

The correct conversion factor when converting from moles to liters is the molar volume at a given temperature and pressure.

This value is dependent on the ideal gas law and can be determined using the ideal gas equation PV = nRT, where P represents pressure, V represents volume, n represents the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

The molar volume of an ideal gas at standard temperature and pressure (STP), which is 0 degrees Celsius (273.15 Kelvin) and 1 atmosphere (101.3 kilopascals), is approximately 22.4 liters per mole.

Therefore, to convert moles to liters, you can multiply the number of moles by the molar volume at STP, which gives you the volume in liters.

It's important to note that the molar volume is an approximation and assumes ideal gas behavior.

Additionally, if you are working with gases at different temperatures and pressures, you would need to use the appropriate molar volume value corresponding to the given conditions.

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The highest levels of atp are produced through the glycolysis Krebs (a) process.

By means of chemiosmosis, oxidative phosphorylation generates ATP using energy from the movement of electrons in an electron transport system. Only one proton (H+) and one electron are present in a hydrogen atom. Potential energy, or stored energy, is available to do work in electrons. A glucose molecule needs two ATP molecules to be completely phosphorylated. When glucose is phosphorylated to fructose 1,6-diphosphate in glycolysis, two molecules of ATP are used up.

A biological process called phosphorylation involves the addition of phosphate to an organic molecule. For two examples, adding phosphate to glucose will result in glucose monophosphate or adding it to adenosine diphosphate (ADP) will result in adenosine triphosphate (ATP).

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by molality you can find the mole

When the moving car brakes to the stop the kinetic energy of car will be converted to the heat energy.

The mechanical brake will be applies to the friction force and it convert the kinetic energy of the car into the thermal energy that which then dissipates on atmosphere. The process of the braking will follow the principle of the conservation of the energy.

The conservation of the energy is the principle, that is expressed in its the most general form, and it is the first law of the thermodynamics. The first law of thermodynamics explains that "the energy of the universe remains the same."

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This question is incomplete, the complete question is :

A car in motion has kinetic energy. A moving car is suddenly stopped. Why does the car stop? Where did the energy go?

Answer: you have to talk to someone who wont mind wanting to wanting to like you a lot like that.

Explanation:  I wish I could be able to talk to someone who would want to get to like me like that, so its a very relatable situation.

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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We can see here that the best fuel is the one that produces the most heat per unit mass. In this case, the fuel that produces the most heat per unit mass is methanol.

Fuel is a substance that is used to produce energy through combustion or other chemical reactions. It is commonly utilized to power various forms of transportation, generate heat or electricity, and operate machinery and appliances.

The results of the experiment are shown below:

Fuel            Mass (g)      Heat produced (J)       Heat per gram (J/g)

Methanol 1.0                          350                   350

Ethanol         1.0                          250                   250

Propane         1.0                          200                   200

Butane         1.0                          150                            150

Pentane         1.0                          100                            100

It is important to note that the results of this experiment are only a measure of the heat produced by the fuels.

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Refer to the attachment.

Answer:

Thank you

I didn't wait because there is someone who will take it and there is someone who answer a wrong answer

Explanation:

Answer:

Pp

Poopoo

Explanation:

Answer:

a) The solubility of the ionic compound is reduced.

Explanation:

Let AB be the ionic compound . It will ionise as follows in solution .

         AB    ⇄    A⁺  +  B⁻

In solution AB , A⁺ and B⁻ maintain a state of equilibrium . Now if we add A⁺ ion as common ion to the solution , the equilibrium will be shifted to the left ie less of AB will ionise to maintain equilibrium . Hence the solubility of AB will be reduced .

The solubility of an ionic compound reduces when any common ion is being added to any solution.

Solubility:

Ionic compound :

When some common ion adds into a solution, the solubility of a slightly soluble ionic compound gets reduced due to :

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Answer:

a

Explanation:

The number of faradays that passes through a resistance in a circuit carrying current of 5 A for 1hour is 0.187 Faraday.

The number of Faradays passing through an electrical circuit can be calculated using the following formula;

Q = It

Where:

According to this question, a circuit of electricity is carrying a current of 5A for 1 hour (3600s). The charge can be calculated as follows:

Q = 5 × 3600

Q = 18,000C

Since [1 F = 96500 C]

18,000C will be equivalent to 0.187 Faradays.

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Answer: A

Explanation: equilibrium is where all the paricles are at the

We gain oxygen from trees through the process of photosynthesis. Photosynthesis is the biochemical process in which green plants, including trees, use sunlight, water, and carbon dioxide to produce oxygen and glucose (a form of sugar).

Trees have specialized cells called chloroplasts, which contain a pigment called chlorophyll. Chlorophyll absorbs sunlight energy.

The tree's leaves capture sunlight and use it to convert carbon dioxide (CO2) from the air and water (H2O) from the roots into glucose (C6H12O6) and oxygen (O2).

During photosynthesis, the chlorophyll in the chloroplasts helps to split water molecules into hydrogen ions (H+) and oxygen atoms (O). The oxygen atoms then combine to form O2 molecules.

The oxygen produced during photosynthesis is released into the atmosphere through tiny pores called stomata found on the surface of the tree's leaves. From there, it mixes with the surrounding air and becomes available for us to breathe.

In summary, trees produce oxygen as a byproduct of photosynthesis. They play a crucial role in maintaining the balance of oxygen and carbon dioxide in the atmosphere, providing us with the oxygen we need for respiration.

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The current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

To calculate the current in amperes, we need to use Faraday's laws of electrolysis and the stoichiometry of the reaction.

Faraday's laws state that the amount of substance produced or consumed during electrolysis is directly proportional to the quantity of electricity passed through the cell. The relationship is given by:

Q = nF

Where Q is the electric charge in coulombs (C), n is the number of moles of substance involved in the reaction, and F is Faraday's constant, which is equal to 96,485 C/mol.

In this case, the substance being produced is Cl2, and we know the mass of Cl2 produced, which is 4.8 x 10^5 g.

First, we need to calculate the number of moles of Cl2 produced:

Molar mass of Cl2 = 35.45 g/mol

Moles of Cl2 = mass / molar mass = (4.8 x 10^5 g) / (35.45 g/mol) ≈ 1.354 x 10^4 mol

Now we can calculate the quantity of electricity passed through the cell using Faraday's laws:

Q = nF

Q = (\(1.354 x 10^4\)mol) * (96,485 C/mol)

Q ≈ 1.308 x 10^9 C

The quantity of electricity is given in coulombs. To find the current, we need to divide this value by the time in seconds.

Given that the time is 18 hours, we convert it to seconds:

Time = 18 hours * 60 minutes/hour * 60 seconds/minute

Time = 6.48 x 10^4 seconds

Finally, we can calculate the current:

Current (I) = Q / Time

I = (1.308 x 10^9 C) / (6.48 x 10^4 s)

I ≈ 2.02 x 10^4 Amperes

Therefore, the current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

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