Use ratios to explain how a tablespoon of soup and a cup of the same soup have the same concentration.

I’m begging for help PLEASE

An ionic bond is formed between sodium and chlorine in sodium chloride. The correct flow chart is shown below.

The question is incomplete, the complete question is;

Complete the flow chart related to the ionic bond in sodium chloride-Atomic number,Electronic configuration of atoms,Electronic configuration of ion,Symbol of sodium ion .please help me to find the answer

The flow chart related to the ionic bond in sodium chloride is as follows;

Sodium is in group 1 of the periodic table. It contains 11 electrons as shown by its electronic configuration. It forms sodium ion by loss of one electron. Group 1 elements form an univalent positive ion.

Chlorine is in group 17 of the periodic table. It has 17 electrons. It forms chloride ion by gaining one electron leading to the formation of sodium chloride.

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Answer:

4.3 moles of Fe2O3

Explanation:

The calculations are shown in the picture.

Answer:

Increases

Explanation:

You can't add more things and it not become anything more

Answer:

this is hard

Explanation:

The mass of sodium chloride : 3.5 g

Given

Reaction :

2.5g of sodium sulphate + 4.5g of barium chloride ⇒ 3.5g of barium sulphate + sodium chloride

Required

The mass of sodium chloride

Solution

Conservation of mass applies to a closed system, where the masses before and after the reaction are the same

From the reaction :

mass of reactants = 2.5 g + 4.5 g = 7.0 g

mass of products = 3.5 g + mass of sodium chloride

mass of reactants = mass of products

7.0 g = 3.5 g + mass of sodium chloride

mass of sodium chloride = 7 g - 3.5 g =3.5 g

Bar graph is the best type of graph to use if you are trying to compare quantities for four separate options that are not related to the dependent or independent variables and that are not measured over time.

Bar graphs are the type of graph that can be used when the data measurement between different variable are not continuous or not measured over time.

The advantages of bar graphs include the following:

Therefore, Bar graph is the best type of graph to use if you are trying to compare quantities for four separate options that are not related to the dependent or independent variables and that are not measured over time.

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The byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

In acid catalysis and base catalysis, a chemical reactiοn is catalyzed by an acid οr a base. By Brønsted–Lοwry acid–base theοry, the acid is the prοtοn (hydrοgen iοn, H+) dοnοr and the base is the prοtοn acceptοr. Typical reactiοns catalyzed by prοtοn transfer are esterificatiοns and aldοl reactiοns.

The acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate can lead tο variοus by prοducts depending οn the reactiοn cοnditiοns and specific chemical pathways. Hοwever, withοut mοre detailed infοrmatiοn οr a specific reactiοn mechanism, it is difficult tο prοvide a cοmprehensive list οf the by prοducts that may fοrm.

Based οn the infοrmatiοn prοvided, the acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate delivers the desired (+)-phenylalanine hydrοchlοride prοduct and the fοllοwing byprοduct(s):

E. Bοth A and C: Acetic acid and ethanοl.

The hydrοlysis οf diethyl acetamidοbenzylmalοnate invοlves the cleavage οf ester bοnds, resulting in the fοrmatiοn οf acetic acid as a byprοduct. Additiοnally, since diethyl acetamidοbenzylmalοnate is an ester, hydrοlysis οf the ester bοnds can alsο prοduce ethanοl as anοther byprοduct.

Therefοre, the byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

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Complete Question :

Answer:

B) I'm not to sure though

Lowering the temperature and increasing the pressure of the solution would generally result in a solid coming out of a solution through crystallization.

Crystallization is a process in which a solid forms from a solution by the arrangement of particles into a regular, repeating pattern. Here are the steps involved:

1. Dissolving: Initially, a solute is dissolved in a solvent to form a solution. The solute particles are dispersed and surrounded by the solvent molecules.

2. Saturation: The solution is then brought to a state of saturation by adding more solute or removing the solvent, such that no more solute can dissolve. At this point, the solution contains a high concentration of the solute.

3. Nucleation: When the solution becomes saturated, it becomes unstable, and the solute molecules start to come together and form tiny clusters or nuclei. These nuclei serve as the starting points for crystal growth.

4. Crystal Growth: Once the nuclei form, they start growing as more solute particles join the crystal lattice. This growth occurs by the addition of solute molecules from the solution onto the existing crystal surface.

Now, let's look at how temperature and pressure affect this process:

- Lowering the temperature: Decreasing the temperature of the solution slows down the movement of solute molecules, reducing their kinetic energy. This leads to a decrease in solubility, meaning less solute can remain dissolved in the solution. As a result, excess solute comes out of the solution and starts forming crystals.

- Increasing the pressure: When the pressure of the solution is increased, it compresses the solvent and alters its properties. This compression can enhance the solubility of the solute, allowing it to dissolve more effectively. Consequently, increasing pressure generally inhibits crystallization as more solute remains dissolved in the solution.

Therefore, lowering the temperature favors crystallization by decreasing solubility, while increasing the pressure generally inhibits crystallization by increasing solubility.

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The time period during which there is water in the tank can be described as (-∞, -8) ∪ (-5, 3). This means that there is water in the tank before 8 minutes have passed since the leak began and between 5 and 3 minutes before the present time.

The given function f(x) = -x^3 - 10x^2 - x + 120 represents the volume of water in the tank at a given time x (measured in minutes since the leak began). To determine the time period during which there is water in the tank, we need to find the values of x for which f(x) is greater than zero.

By analyzing the function and its graph, we can observe that f(x) is positive for values of x in the intervals (-∞, -8) and (-5, 3). This means that before 8 minutes have passed since the leak began and between 5 and 3 minutes before the present time, the volume of the tank is positive, indicating that there is water in the tank during those time periods.

Therefore, the time period during which there is water in the tank is (-∞, -8) ∪ (-5, 3).

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Answer:

In the forward direction and releases carbondioxide gas from backside.

Explanation:

In the forward direction and the carbondioxide gas which is a waste material is removed from the engine at the back. The chemical energy of fuel is converted into mechanical energy with the help of engine which able the car to move in the forward direction so engine is the key component that is responsible for the movement of car.

Answer:

In the forward direction and releases carbondioxide gas from backside.

Explanation:

Answer:

C

Explanation:

Because you can't open your lamps when there's no electricity or if it's brownout,,,,

Answer:

how easily a liquid flows

Answer:

He was the first person in history to figure out the basic components of foodstuffs. A brilliant chemist, he's still best known for having one of the nearest misses in all of science. Probably he shouldn't have named the one wrong hypothesis of his career after himself.

The most important consideration when cutting a gem that displays pleochroism or other optical phenomena is the orientation of the gem.

This is because these optical phenomena are dependent on the crystal structure and orientation of the gem, so the cutter must carefully examine the stone and determine the best orientation to maximize its beauty and value.

Additionally, an explain and detailed answer would involve the cutter using specialized equipment to analyze the gem's optical properties and determine the optimal orientation for cutting. They may also take into account the durability and reactivity to acids of the stone to ensure it will hold up during the cutting and polishing process. Fluorescence testing may also be conducted to ensure that the stone's color is not negatively affected by exposure to certain light sources. Ultimately, the cutter must take a comprehensive approach to ensure that they are maximizing the gem's beauty and value while also considering its durability and stability.

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Suppose that 9 good fuses and 4 defective ones have been mixed up. The defective fuses, we test them one-by-one, at random. The probability that we are lucky and find both of the defective fuses in the first two tests is 1/13.

We can use the concept of probability. There are 13 fuses in total, and we are looking for a specific order of the first two being defective. For the first test, the probability of selecting a defective fuse is 4/13 (since there are 4 defective fuses and 13 total fuses). Once we have found one defective fuse, there are now 3 defective fuses remaining and a total of 12 fuses. For the second test, the probability of selecting another defective fuse is 3/12, which can be simplified to 1/4.

To find the probability of both events happening consecutively, we multiply the probabilities of each individual event: (4/13) * (1/4) = 4/52, which simplifies to 1/13.  So, the probability of finding both defective fuses in the first two tests when there are 9 good fuses and 4 defective ones is 1/13.

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Lead has 82 protons and 82 electrons.

Lead, with an atomic number of 82, indicates the number of protons in its nucleus. Therefore, lead has 82 protons. Since atoms are electrically neutral, the number of electrons in an atom is equal to the number of protons. Consequently, lead also has 82 electrons.

The protons, located in the nucleus, carry a positive charge, while the electrons, which orbit around the nucleus, carry a negative charge. The equal number of protons and electrons ensures that the overall charge of a lead atom is neutral.

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Answer:

When the frozen popsicle sitting outside in the Sun is exposed to warm air, energy will travel between the popsicle and the warm air as follows;

1) Convection current

Heat will be gained by the frozen popsicle by coming into contact with fresh warm air as the air flows around the popsicle while the cooling of the warm air will cause the water vapor in the air to condense and form the visible mist

In turn the popsicle will gain heat resulting in melting of the ice

2) Conduction

As the some of the mist from the air settles on the popsicle, they share their heat resulting further melting of the popsicle

3) Radiation

Radiated heat energy from the Sun is absorbed by the popsicle resulting in the melting of the popsicle

Explanation:

Answer:

601mmHg.

Explanation:

Step 1:

Data obtained from the question.

Initial pressure (P1) = 760mmHg

Initial temperature (T1) = 100°C = 100°C + 273 = 373K

Final temperature (T2) = 22°C = 22°C + 273 = 295K

Final pressure (P2) =..?

Step 2:

Determination of the new pressure at which the water will boil.

The new pressure on the at which the water will boil can be obtained as follow:

P1/T1 = P2/T2

760/373 = P2/295

Cross multiply to express in linear form

373 x P2 = 760 x 295

Divide both side by 373

P2 = (760 x 295) / 373

P2 = 601mmHg

Therefore, the new pressure at which the water will boil is approximately 601mmHg.

Answer:

C. 18-20 mm

Explanation:

Answer:

Below:

Explanation:

Instead of a single, centralized brain, jellyfish possess a net of nerves. This “ring” nervous system is where their neurons are concentrated—a processing station for sensory and motor activity. These neurons send chemical signals to their muscles to contract, allowing them to swim.

Hope it helps...

It's Muska

Approximately 24.55 cm^3 of oxalic acid must be added to sufficient water to give a 1.500 liter solution with a formal concentration of 0.300 F.

To find the volume of oxalic acid needed to make a 1.500 liter solution with a formal concentration of 0.300 F, we need to use the equation:

Formal concentration (F) = (moles of solute) / (volume of solution in liters)

First, we need to calculate the moles of oxalic acid required. The formal concentration (F) is given as 0.300, so:

0.300 = (moles of oxalic acid) / 1.500

Rearranging the equation, we find:

moles of oxalic acid = 0.300 * 1.500

moles of oxalic acid = 0.450

Next, we can calculate the mass of oxalic acid needed using its molecular mass:

mass of oxalic acid = moles of oxalic acid * molecular mass

mass of oxalic acid = 0.450 * 90.03

mass of oxalic acid = 40.5145 g

Finally, we can calculate the volume of oxalic acid needed using its density:

volume of oxalic acid = mass of oxalic acid / density

volume of oxalic acid = 40.5145 g / 1.65 g/cm^3

volume of oxalic acid = 24.55 cm^3

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The density of Carbon-12 nucleus is, \(1.21 \times 10^{14} \ g/cm^3\).

Nuclear density states that density of the nucleus of an atom, is the ratio of mass per unit volume inside the nucleus. Since the atomic nucleus carries most of the atom mass and the atomic nucleus is very small in comparison to the entire atom, the nuclear density is very high.

The Volume of nucleus can be determined using the formula,

\(V = \dfrac{4}{3} \times \pi \times R^{3}\)

The nuclear radius is \(2.70 \times 10^{-13}\) cm.

Volume = \(\dfrac{4}{3} \times \pi \times (2.70 \times 10^{-13})^{3}\)

Volume = \(82.45 \times 10^{-39} cm^{3}\)

The mass of nucleus is, \(1.0 \times 10^{-23}\) g.

Density = \(\dfrac{mass}{volume}\)

Density = \(\dfrac{1.0 \times 10^{-23}}{82.45 \times 10^{-39}}\)

Density = \(1.21 \times 10^{14} \ g/cm^3\)

The density is \(1.21 \times 10^{17} \ kg/m^3\)

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Answer:

the events of the story

Explanation:

hope this helps

To calculate the energy released in joules/mol when one mole of polonium-214 decays, first determine the mass difference between reactants and products: So the energy released when one mole of polonium-214 decays is 8.78 x 10¹⁴ J/mol.

To calculate the energy released in joules/mol when one mole of polonium-214 decays according to the given equation, we need to first determine the atomic mass difference between the reactants and products.
The atomic mass of 214Po is 213.99519 amu, while the combined atomic masses of 210Pb and 4He are 209.98284 amu + 4.00260 amu = 213.98544 amu.
Thus, the atomic mass difference is 213.99519 amu - 213.98544 amu = 0.00975 amu.
Using the relationship E=mc^2, we can calculate the energy released by the decay of one mole of 214Po as:
E = (0.00975 amu/mol) * (1.66054 x 10^-27 kg/amu) * (2.99792 x 10^8 m/s)^2 = 8.78 x 10^14 J/mol.
Therefore, the correct answer is 8.78 x 10^14 J/mol.

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Answer:

Yes

Explanation:

The compounds have both hydrogen and carbon only which are atoms that make up the hydrocarbons and they are also gases at room temperature

Land surfaces are much darker so they absorb much more solar radiation than water. Most of the solar radiation is reflected by water which leads in reflecting the solar radiation that reaches the surface back in to the atmosphere.

How does this occur?

Due to lower specific heat of sand it heats up faster than water. On the other hand water requires one calorie of energy to raise the temperature of one gram of water by one degree Celsius. Sand takes 19 calories per gram to raise the temperature of the sand by 1 degree Celsius.  While Sand requires fewer calories to raise its temperature one degree Celsius and that’s why it heats up faster than water.

Land absorbs more solar radiation the land surface retains more heat as do the vegetation for energy.

Therefore, during this experiment the sand heats up much faster than water. This happens because of the specific heat of the sand that initiates the heating rapidly under the lamp as the time passes.

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Answer: See Explanation

Explanation:

When the volume of a gas is decreasing at a constant pressure, the temperature of the gas will increase. This is because of the relationship between the pressure, volume, and temperature of a gas, which is described by the Ideal Gas Law (PV = nRT), where P is pressure, V is volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.

In this scenario, the pressure is constant, and the volume is decreasing, so the product PV must remain constant in order to maintain the balance of the equation. Therefore, the only way to balance this equation is to increase the temperature T, in order to make the product PV remains constant.

This relationship is also described by Gay-Lussac's Law, which states that the pressure of a fixed mass of a gas is directly proportional to its absolute temperature at a constant volume. This means that if the volume of the gas is decreasing, the pressure will remain constant, the only way to balance the equation is to increase the temperature.

So in conclusion, as the volume of a gas decreases at constant pressure, the temperature of the gas will increase.

An observer in one of those galaxies see the other galaxy moving away at 400000 km/s.

Relative velocity is the velocity of an object with respect to another object, that is the time rate of change of relative position of one object with respect to another object.

Since two galaxy are moving in opposite directions with a velocity of 200,000 km/s. Hence the relative velocity between the two galaxies is 400000 km/s (200000 + 200000)

Therefore an observer in one of those galaxies see the other galaxy moving away at 400000 km/s.

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Answer:

D 400,000km/s

Explanation:

To prepare a 1.27 L aqueous solution of red dye #40 with an absorbance of 0.251, you would need 1.05 grams of red dye #40. By accurately determining the mass of red dye #40 needed, one can ensure the desired concentration and absorbance in the prepared solution.

The relationship between absorbance (A), molar absorptivity (ε), concentration (C), and path length (l) is given by the Beer-Lambert Law equation: A = ε * C * l.

We are given the molar absorptivity (ε) as 2.13×10^4 M^−1cm^−1, the path length (l) is typically assumed to be 1 cm, and the absorbance (A) is 0.251. We need to calculate the concentration (C) of the red dye #40 in the solution.

Using the Beer-Lambert Law equation, we can rearrange it to solve for concentration (C): C = A / (ε * l).

Substituting the given values into the equation:

C = 0.251 / (2.13×10^4 M^−1cm^−1 * 1 cm)

Next, we need to convert the concentration from molar (M) to grams per liter (g/L) using the molar mass of red dye #40. The molar mass is given as 496.42 g/mol.

To convert from molar concentration to grams per liter, we multiply by the molar mass:

Concentration (g/L) = Concentration (M) * Molar mass (g/mol)

Concentration (g/L) = C * 496.42 g/mol

Finally, we can calculate the mass of red dye #40 needed to prepare the solution by multiplying the concentration (g/L) by the volume of the solution (1.27 L).

Mass = Concentration (g/L) * Volume (L)

After performing the calculations, the mass of red dye #40 required to prepare a 1.27 L aqueous solution with an absorbance of 0.251 is found to be approximately 1.05 grams. This calculation considers the molar absorptivity of the dye, the absorbance of the solution, and the volume of the solution. The molar mass of red dye #40 is used to convert the concentration from molar to grams per liter. By accurately determining the mass of red dye #40 needed, one can ensure the desired concentration and absorbance in the prepared solution.

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