The italian term neapoletana used outside of italy often implies the use of what in a food dish?.

To determine the percent purity of the sample, we first need to calculate the number of moles of sodium oxalate in the sample and then use the balanced chemical equation to determine the number of moles of KMnO4 required to react with all of the sodium oxalate.

Calculate the number of moles of KMnO4 used:

Moles of KMnO₄ = molarity of KMnO₄ x volume of KMnO₄ used

Moles of KMnO₄ = 0.100 mol/L x 0.03691 L

Moles of KMnO₄ = 0.003691 mol

Write the balanced chemical equation for the reaction of KMnO₄ and Na₂C₂O₄:

5 Na₂C₂O₄ + 2 KMnO₄ + 8 H₂SO₄ → 2 MnSO₄ + 10 CO₂ + K₂SO₄ + 8 H₂O + 10 Na₂SO₄

According to the balanced equation, 2 moles of KMnO₄ react with 5 moles of Na₂C₂O₄. Therefore, we can calculate the number of moles of Na₂C₂O₄ in the sample:

Moles of Na₂C₂O₄ = Moles of KMnO₄ × (5 moles Na₂C₂O₄ / 2 moles KMnO₄)

Moles of Na₂C₂O₄ = 0.003691 mol × (5/2)

Moles of Na₂C₂O₄ = 0.00923 mol

Calculate the percent purity of the sample:

Percent purity = (mass of pure Na₂C₂O₄ / mass of impure sample) × 100%

We can use the molar mass of Na₂C₂O₄ to calculate the mass of pure Na₂C₂O₄:

Mass of pure Na₂C₂O₄ = moles of Na₂C₂O₄ × molar mass of Na₂C₂O₄

Mass of pure Na₂C₂O₄ = 0.00923 mol × 133.999 g/mol

Mass of pure Na₂C₂O₄ = 1.237 g

Finally, we can calculate the percent purity of the sample:

Percent purity = (1.237 g / 5.00 g) × 100%

Percent purity = 24.7%

Therefore, the percent purity of the sample is 24.7%.

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When an acid is added to an alkali, the two substances react to produce a salt and water. This process is called neutralization, and it is an important part of many chemical reactions.

The exact salt that is produced depends on the specific acid and alkali that are used. For example, if hydrochloric acid is added to sodium hydroxide (an alkali), the resulting salt will be sodium chloride (common table salt). The reaction between an acid and an alkali is typically exothermic, which means that it releases heat. This can be felt as a warm sensation when the acid and alkali are mixed together. The heat released during the reaction can be used to drive other chemical reactions or to produce electricity in a process known as cogeneration. The resulting salt and water produced by the neutralization reaction are most probably harmless so it can be disposed safely.

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The following which is not a part of  Dalton atomic theory is the properties of atoms of the same elements can be different . Thus option B is correct.

Dalton has proposed his theory in three parts and each part stated that

The first portion of his theory asserts that all stuff is made up of indivisible atoms.

According to the second section of the theory, all atoms of a given element have the same mass and characteristics.

Compounds, according to the third section, are combinations of two or more different types of atoms.

Dalton has given three laws

Thus, the following which is not a part of  Dalton atomic theory is the properties of atoms of the same elements can be different . Thus option B is correct.

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Your question is incomplete, but your complete question was

which of the following is not a part of the ideas john dalton proposed in his model

A. All matter is composed of indivisible atoms.

B. The properties of atoms of the same element can be different.

C. Compounds form when atoms combine in whole number ratios.

D. An atom can neither be created nor destroyed.

Answer: they both eat fish

Explanation:

Answer:

correct answer is d)

Explanation:

This answer demonstrates law of conservation of mass because the mass of the products is equal to the mass of reactants with the help of the coefficients which is the process known as balancing. This answer also includes the correct formulas, as Br is a gas so it MUST be written as Br2. hope this helps:)

2Al(s) + 3Br2(1) - 2AlBr3(s) is the  correct formulas and demonstrates conservation of mass.

Every action has an equal and opposite response, states Newton's Third Law. This indicates that any force applied to an item will have an equal and opposite-directed response force of the same magnitude. A force pair is the collective name for these connected forces.

Each individual object will have a different force pair with each other object in systems of numerous objects where all things interact. In the case of charged particles, the charge of each object will dictate the direction of each force in the force pair.

Similar charges will cause particles to repel one another by directing their forces away from one another. With their forces pointing in the same direction, particles with opposing charges attract one another.

Therefore, 2Al(s) + 3Br2(1) - 2AlBr3(s) is the  correct formulas and demonstrates conservation of mass.

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Specific heat is used to explain why different substances changes the temperature at different rate.

Temperature is a physical quantity which is expressed as quantitatively the perceptions of the coldness and hotness. Temperature is measured with a thermometer.

It is defined as the amount of heat which is used to require to increase the temperature by 1°C.

The SI unit thorough which it is measured is J/ g/ °C.

Let's take an example of specific heat of water which is 4.184J/ g/ °C.

Therefore, specific heat is used to explain why different substances changes the temperature at different rate.

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Explanation:

We are given different isotopes and we have to identify the number of protons and neutrons that are in the nuclueus of each atom.

a) Carbon-14:

By definition two isotopes are atoms that have the same atomic number but different mass number. The atomic number of an atom is equal to the number of protons of that atom, and the mass number is equal to the number of protons plus the number of neutrons.

atomic number = n° of protons

mass number = n° of protons + n° of neutrons

n° of protons = atomic number

n° of neutrons = mass number - n° of protons

n° of neutrons = mass number - atomic number

If two isotopes have the same atomic number but different mass number we can say that two isotopes have the same number of protons but different number of neutrons.

In we pay attention to carbon-14 we can look for its atomic number in the period table: 6. And its mass number is the one that we are given after the name of the element: 14.

n° of protons = atomic number = 6

n° of protons = 6

n° of neutrons = mass number - atomic number = 14 - 6

n° of neutrons = 8

b) Cobalt-60:

atomic number = 27 (from the periodic table)

mass number = 60

n° of protons = atomic number = 27

n° of protons = 27

n° of neutrons = mass number - atomic number = 60 - 27

n° of neutrons = 33

c) Gold-197:

atomic number = 79 (from the periodic table)

mass number = 197

n° of protons = atomic number = 79

n° of protons = 79

n° of neutrons = mass number - atomic number = 197 - 79

n° of neutrons = 118

d) Uranium-235:

atomic number = 92 (from the periodic table)

mass number = 235

n° of protons = atomic number = 92

n° of protons = 92

n° of neutrons = mass number - atomic number = 235 - 92

n° of neutrons = 143

Answer:

a) Carbon-14: n° of protons = 6 n° of neutrons = 8

b) Cobalt-60: n° of protons = 27 n° of neutrons = 33

c) Gold-197: n° of protons = 79 n° of neutrons = 118

d) Uranium-235: n° of protons = 92 n° of neutrons = 143

Answer: he gave him a map of somewhere

Explanation:

Answer:

1. at least two charged interacting parts

2. from the electric fields of charged subatomic particles

3 an arrow released from the bow

4Electrical fields of charged particles interact, bonding those with opposite charges.

5 the interaction of the electric fields of protons and electrons

6 The energy stored in the system increases.

7 Kinetic energy increases because the magnets move in the direction of the field.

8 Iron pieces accelerate toward the magnet, and the energy stored in the system decreases.

9  

The energy stored in the field decreases because the magnet moves in the direction of the field.

10 The energy stored increases and then decreases.

11 The wire was not connected to the source.

12  The electromagnet will become more powerful.

From the electric fields of charged subatomic particles, at least two charged interacting pieces, an arrow launched from the bow, Interaction between electrical fields of charged particles bonds those with opposing charges, the interaction between the protons' and electrons' electric fields.

An electric field is a physical field that surrounds electrically charged particles and acts as an attractor or repellent to all other charged particles in the vicinity. It can also refer to a system of charged particles' physical field.

The area of space surrounding an electrically charged particle or object in which the charge body perceives force is known as the electric field. Examples: -Charges and their arrangements, such as capacitors and battery cells, produce electric fields.

We can produce current flow by applying the pushing force required by electric fields. A circuit's electric field resembles an electron pump in that it is a sizable source of negative charges that can drive electrons.

Thus, From the electric fields of charged subatomic particles, at least two charged interacting pieces.

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The valence-shell configuration of the metallic element M in Period 4 is 4s2 4p6.

What is the valence-shell configuration of the metallic element M in Period 4?

The valence-shell configuration refers to the arrangement of electrons in the outermost shell, or valence shell, of an atom. In Period 4, the valence shell of the metallic element M would be the fourth shell, denoted as the 4s and 4p orbitals.

The electron configuration of an element is determined by the position of the element in the periodic table. Since M is in Period 4, we know that it has four electron shells. The valence electrons are those located in the outermost shell, which determine the element's chemical properties and reactivity.

In this case, the valence-shell configuration of M is given as 4s2 4p6, indicating that there are two electrons in the 4s orbital and six electrons in the 4p orbitals. The total number of valence electrons can be calculated as the sum of the electrons in the valence orbitals, which in this case is 8.

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0.01 M NaCl solution will have the highest freezing point

Freezing point will be given by the formula:

ΔT(f) = iK(f).m

where, m = molality

Sucrose is non-electrolyte and so i = 1

NaCl → Na+ + Cl−

Thus i = 2

Na2SO4 → 2Na+ + SO4^2−

Thus i = 3

The highest freezing point will be of the solution having the lowest ΔT(f) value.

As option B has least value of both i and m, 0.01M NaCl has lowest

ΔT(f) = K(f) × (0.02)

Therefore, 0.01 M NaCl solution will have the highest freezing point.

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Answer:

0.01 M NaCl is the answer

Windshield wiper fluid, also known as windshield washer fluid, is an essential component of maintaining the safety of your vehicle. It works by cleaning off the debris and dirt from your car's windshield, making it easier to see the road. In cold weather, it's important to know at what temperature does windshield wiper fluid freeze.

Windshield wiper fluid can freeze in temperatures that are below 32°F (0°C). Most windshield wiper fluids will freeze at around 20°F (-7°C).If you live in an area with harsh winters, you'll want to make sure that you're using a windshield wiper fluid that is formulated for use in colder temperatures.

Look for a fluid that is rated for use in temperatures below 0°F (-18°C).This is important because if the fluid in your car's windshield wiper system freezes, it can damage the pump and other components, which can be expensive to repair. To prevent the fluid from freezing, you can park your car in a garage, use a windshield cover, or add antifreeze to the fluid.

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To solve this problem, we can use the following steps:

Step 1: Calculate the amount of H+ ions in the lake.

pH is a measure of the concentration of hydrogen ions (H+) in a solution. The lower the pH, the higher the concentration of H+ ions. The pH of the lake is 4.045, so we can calculate the concentration of H+ ions using the following equation:

pH = -log[H+]

4.045 = -log[H+]

[H+] = 7.27 × 10^-5 mol/L

Step 2: Calculate the amount of hydroxide ions (OH-) needed to neutralize the H+ ions.

To raise the pH to 7.00, we need to add enough hydroxide ions (OH-) to neutralize the H+ ions in the lake. The balanced chemical equation for this reaction is:

Ca(OH)2 + 2H+ → Ca2+ + 2H2O

For every 2 H+ ions, we need 1 Ca(OH)2 molecule to neutralize them. The amount of Ca(OH)2 needed can be calculated using the following equation:

mol Ca(OH)2 = 0.5 × [H+] × V / 1000

where V is the volume of the lake in liters (8.99 × 10^7 L), and we divide by 1000 to convert from cubic meters to liters.

mol Ca(OH)2 = 0.5 × (7.27 × 10^-5 mol/L) × (8.99 × 10^7 L) / 1000

mol Ca(OH)2 = 3275.5 mol

Step 3: Calculate the mass of CaO needed to produce the required amount of Ca(OH)2.

To produce Ca(OH)2, we need to react CaO with water:

CaO + H2O → Ca(OH)2

The molar mass of CaO is 56.08 g/mol, so the mass of CaO needed can be calculated using the following equation:

mass CaO = mol CaO × molar mass CaO

mol CaO = mol Ca(OH)2 / 1 (from the balanced equation)

mass CaO = (mol Ca(OH)2 / 1) × (molar mass CaO / 1 mol CaO)

mass CaO = 3275.5 mol × 56.08 g/mol

mass CaO = 183,812.8 g = 183.8 kg (to 3 significant figures)

Therefore, 183.8 kg of CaO must be added to raise the pH of the lake from 4.045 to 7.00.

The concentration of the chloride ion is obtained as 0.20 mol/L.

We have to note that the concentration of the solution has to with the amount of the solute that we have in the system. In this case, we can see that we have the Iron (III) chloride (FeCl3) which completely dissociates when dissolved in water.

Now we are told that the concentration of the solute is 0.60 mol/L solution of Iron (III) chloride but each FeCl3 molecule produces three Cl- ions, the concentration of Cl- ions in the solution will be three times the concentration of FeCl3.

Hence;

Concentration of the chloride ion is;

0.60 mol/L/3

= 0.20 mol/L

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The physical quantity used to qualitatively assess if a reaction is endothermic or exothermic in calorimetry is heat.

Measurements of heat transferred to or from a substance are determined using calorimetry.

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The physical quantity used to qualitatively assess if a reaction is endothermic or exothermic in calorimetry is heat.

Measurements of heat transferred to or from a substance are determined using calorimetry.

Characteristics of endothermic reaction:

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Answer:

The Answer is a liquid.

The formula when converting g/mL to mg/L is to multiply the mass / volume value by 1e+6

When we do this we come up with 1,730,000

This however, should be written as either 1.73⋅10^5 or 1.73E+5.

Answer:

Decomposition reactions require an input of some form of energy. For example, under the influence of an electric field, water breaks down to give hydrogen and oxygen. In the presence of sunlight, hydrogen peroxide decomposes into oxygen and water.

The volume would be explanation times explanation because the explanation is the explanation

Explanation:

Answer:

\(\boxed {\boxed {\sf v=12 \ mL}}\)

Explanation:

Grace found the volume of the rock using water displacement.

To calculate the volume, we must subtract the initial volume from the final volume.

\(v_f-v_i\)

The initial or original volume is 20 milliliters.

The final or new volume, after the rock is added to the water, is 32 milliliters.

\(v_f=32 \ mL\\v_i=20\ mL\)

Substitute the values into the formula and subtract.

\(32 \ mL-20 \ mL\)

\(12 \ mL\)

The volume of the rock is 12 milliliters.

Answer:

The one thing they have in common is that They are mixtures

Answer:

they are both mixtures

Explanation:

The hydroxide ion concentration of the solution is 9.5 × 10⁻⁴.

The hydroxide ion concentration can be calculated by using the expression of pOH and pH. As the pH of the solution is 10.94, the pOH of the solution can be calculated as:

pOH + pH = 14  

pOH = 14 - 10.94

pOH = 3.06T

he expression of pOH is given as:

pOH = - log[OH-]

The OH- concentration can be calculated as:

[OH-] = 10 -pOH

[OH-] = 10 - 3.06[OH-] = 9.5 × 10⁻⁴

The hydroxide ion concentration of the solution is 9.5 × 10⁻⁴.

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The following statement “an oxidation reaction often occurs without a corresponding reduction reaction.” is False.

An oxidation reaction and a reduction reaction are always coupled together and occur simultaneously. This is known as a redox (reduction-oxidation) reaction. In a redox reaction, one species undergoes oxidation (loses electrons) while another species undergoes reduction (gains electrons). The transfer of electrons from the oxidized species to the reduced species ensures that the total number of electrons remains conserved.

For example, consider the reaction:

2Na + Cl₂ → 2NaCl

In this reaction, sodium (Na) loses an electron and is oxidized to Na⁺, while chlorine (Cl₂) gains an electron and is reduced to 2Cl⁻. The oxidation of sodium is always accompanied by the reduction of chlorine, and vice versa. The transfer of electrons allows for charge balance between the reacting species.

It is important to note that oxidation and reduction are complementary processes that occur together. One species cannot be oxidized without another species simultaneously undergoing reduction in a redox reaction.

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The molarity of the solution is 0.833 M NaOH.

To calculate the molarity (M) of a solution, you need to determine the number of moles of solute (in this case, NaOH) and divide it by the volume of the solution in liters.

First, convert the given mass of NaOH to moles using its molar mass. The molar mass of NaOH is 22.99 g/mol for Na, 16.00 g/mol for O, and 1.01 g/mol for H. So, the molar mass of NaOH is 22.99 + 16.00 + 1.01 = 40.00 g/mol.

Number of moles of NaOH = 20.0 g / 40.00 g/mol = 0.500 mol.

Next, divide the number of moles by the volume of the solution in liters:
Molarity (M) = 0.500 mol / 2.40 L = 0.208 M.

Therefore, the molarity of the solution prepared is 0.208 M NaOH.

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Answer:

If we know the force of an object in Newtons) and we know how fast the object accelerates in ms"), then we can easily find the mass of the object by

dividing the force by the mass

Answer: left and right hemisphere ya

Explanation:

The structure for 5-chloro-2-propyl-1-heptanol can be drawn by drawing a 7 carbon chain with (OH) functional group on C1, adding propyl group on C2 and  Cl on C5                                  

5-Chloro-2-propyl-1-heptanol is an organic compound that belongs to the class of alcohols.

The IUPAC name of the compound is 5-chloro-2-propylheptan-1-ol, which denotes the position of the hydroxyl group on the carbon chain. The prefix "heptan-" refers to the seven-carbon chain, and the suffix "-ol" denotes the presence of an alcohol functional group (-OH).

5-Chloro-2-propyl-1-heptanol is a colorless to pale yellow liquid with a strong odor. It is a primary alcohol. It is a versatile chemical intermediate that can be used to prepare a variety of other compounds, including pharmaceuticals, agrochemicals, and flavors. It is also used as a solvent and a reagent in organic synthesis

Thus, the structure for 5-chloro-2-propyl-1-heptanol can be drawn by drawing a 7 carbon chain with (OH) functional group on C1, adding propyl group on C2 and  Cl on C5  

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Answer:

it's volume also decrease

Answer:

An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms.

Explanation:

none

Answer: An ionic bond is a bond that rips off electrons from one atom onto another.  The more valence electrons an atom has the more likely it is going to gain electrons.  The fewer valence electrons an atom has the more likely it is going to lose electrons.  

Covalent bonds are bonds that share electrons between two atoms.