The strength of an acid or base is related to its strength as an electrolyte. (b) Is the electrical conductivity of 1x10⁻⁷ M HCl higher, lower, or the same as that of 1x10⁻⁷ M CH₃COOH? Explain.

Answer:

It is already balanced

Explanation:

hbr     +    khco3  ===>  h20 + kbr + co2     IS BALANCED

\(\\ \sf\bull\longmapsto E=hv\)

\(\\ \sf\bull\longmapsto E=\dfrac{hc}{\lambda}\)

\(\\ \sf\bull\longmapsto E=\dfrac{6.626\times 10^{-34}Js\times 3\times 10^8ms^{-1}}{4.25\times 10^{-7}m}\)

\(\\ \sf\bull\longmapsto E=\dfrac{19.878\times 10^{-26}Jm}{4.25\times 10^{-7}m}\)

\(\\ \sf\bull\longmapsto E=4.677\times 10^{-19}J\)

\(\\ \sf\bull\longmapsto E=4677\times 10^{-16}J\)

\(\\ \sf\bull\longmapsto E=4677eV\)

Answer:

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Explanation:

Plz mark brainliest thanks

A researcher (Pennebaker, 1990) asked people who had experienced a traumatic event to describe the event and how they experienced it. Six months later, he found that these people positive effects on both psychological and physical well-being in the long term.

In Pennebaker's 1990 study, individuals who had experienced a traumatic event were asked to describe the event and their subjective experiences surrounding it. Six months later, Pennebaker found that these individuals demonstrated several outcomes. Firstly, participants who engaged in expressive writing about their traumatic experiences showed improved psychological well-being compared to those who did  not write. The act of writing provided a cathartic release, allowing individuals to process and make sense of their emotions, thoughts, and experiences. This, in turn, facilitated emotional processing and reduced distress. Secondly, participants who engaged in expressive writing also exhibited improved physical health outcomes. They reported fewer doctor visits, fewer physical symptoms, and even improved immune function. The act of writing appeared to have a beneficial impact on the body's physiological responses to stress. Overall, Pennebaker's study demonstrated that engaging in expressive writing about a traumatic event can have positive effects on both psychological and physical well-being in the long term. It highlights the importance of expressive writing as a therapeutic tool for processing and coping with traumatic experiences.

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Answer:

any push or pull that causes an object to move, stop, or change speed or direction

Description:

zayn your my enemy

The pressure (in atm) on a surface 20.0 ft underwater, if the atmospheric pressure is 1.023 atm, and the densities of water and mercury are 1.00 and 13.6 g/ml, respectively is   1.067 atm

Generally, The pressure on a surface under water is equal to the atmospheric pressure plus the pressure due to the weight of the water above the surface.

To calculate the pressure due to the weight of the water, we need to know the depth of the surface under water and the density of the water.

Since the atmospheric pressure is 1.023 atm, and the density of water is 1.00 g/ml, the pressure on the surface 20.0 ft under water is given by:

Pressure = 1.023 atm + (depth * density of water * acceleration due to gravity)

= 1.023 atm + (20.0 ft * 1.00 g/ml * 32.2 ft/s^2)

= 1.023 atm + 644.4 lb/ft^2

= 1.023 atm + 44.6 psi

= 1.067 atm

So the total pressure on the surface 20.0 ft under water is 1.067 atm.

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Answer:the CO2 molecule has an excess of electron

Answer:

hhhsstyi chick to yay to today do y'all

Answer:

 ¹₀n

Explanation:

The given expression is:

          ²⁷₁₃Al      +     ₐᵇT   →   ²⁴₁₁Na    +    ⁴₂He

This expression is typical of nuclear reactions. To balance this expression we must conserved the mass number and the atomic number.

The mass number is the superscripts and the atomic number is the subscript;

 Now;

 conserving mass number:

             27 + b  = 24 + 4

             27 + b  = 28  

                   b  = 28 - 27  = 1

conserving the atomic number;

            13 + a  = 11 + 2

             13 + a  = 13

                    a  = 0

So;

The particle T is a neutron    ¹₀n

Aaron Douglas was a prominent figure of the Harlem Renaissance, a cultural movement that emerged in the 1920s and 1930s.

Based on his style, it is likely that Douglas used a limited palette in his painting Let My People Go. He often used a muted color scheme, with earthy tones and blues, greens, and purples.

Douglas typically used high-key colors in his paintings, which means that he used bright, saturated colors that create a sense of energy and vitality. He also used low-key colors to create contrast and depth.

The light source in Douglas' paintings is often not clearly defined, as he tended to flatten the picture plane and eliminate shadows. When shadows are present, they are often stylized and simplified.

In terms of balance, Douglas often used symmetrical and asymmetrical compositions in his paintings. He was also known for using repetition and pattern to create a sense of visual harmony.

In Let My People Go, it is likely that Douglas emphasized the figures and their struggle for freedom. The painting depicts the biblical story of Moses leading the Israelites out of slavery in Egypt, which was a powerful symbol of hope and liberation for African Americans during the Harlem Renaissance.

Finally, the size of objects and figures in Douglas' paintings varied depending on the composition and the message he wanted to convey. He often used large, monumental figures to emphasize their strength and resilience.

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Answer: A) Are you asking for the production of "ions" from a solid? Or are you asking for the formation of gases. For gases, this is called "energy of vaporization."

B) "Lattice," I am guessing.

C) Greater

Explanation: Most molecules enjoy their existance as solids (not all) due to the intermolecular forces that attract the molecules to each other. These are largely hydrogen and ionic bonds. Hydrophobic compounds don't always share this enthusiam to stick together. Gasoline is happy to leave it's relatives behind and it's Up, Up, and Away.

Answer:

25 possibly

Explanation:

I'm not too sure about this, but sodium oxide is Na2O, 2 sodium and 1 oxygen, so 12.5g * 2 is 25

If someone else comes up with a more convincing argument listen to them

Cu will be produced at the negative electrode for the following reaction:

2CuSO4 (a q) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g) ,therefore option (b) is correct.

Electrolysis is defined as a process of decomposing ionic compounds into their elements by passing a direct electric current through the compound in a molten  form.

Characteristics of negative electrode -:

The negative electrode in an electrolytic cell, is the one toward which positively charged particles are attracted.

The cathode has a negative charge because it is connected to the negatively charged .

When an electrolyte is dissolved in water and an electric current is passed through it, the Cations move towards the cathode and Anions move towards anode .

Cu will be produced at the negative electrode for the following reaction:

2CuSO4 (a q) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g) ,hence option (b) is correct.

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The  H2  product will be produced at the negative electrode for the following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O₂(g). option D is correct.

The electrode is an electrical conductor or source of electricity that carries electric current or circuit to the non-metallic circuit parts of a circuit, some examples are electrolyte and semiconductor.

The following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O2(g) is a redox reaction in which the negative end is producing the H2 gas and copper gets solidify  at the positive end.

Therefore, H₂  product will be produced at the negative electrode for the following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O₂(g). option D is correct.

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Answer:

sunscreens helps of nut burning and the weakness it has polymen so it's bas

The missing part of the equation is found to be 4/2He. Option A

The term nuclear equations have to do with the type of equation in which one type of nucleus is transformed into another sometimes by the bombardment or loss of a particle.

Now the full equation ought to be written as 7/3Li + 1/1H -----> 4/2He + 4/2He. This is because the total mass on the left is 8 and the total charge on the left is 4.

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Answer:

the answers are given in the photo

Answer:

mu answer is A

Explanation:

i think it is a popular opinion because its the opinion of a country

The mass of nitrogen gas in the sample is 0.001355 g and the number of molecules of nitrogen gas in the sample is 2.91 x 10¹⁹ molecules.

At STP (Standard Temperature and Pressure), the temperature is 0°C (273.15 K) and the pressure is 1 atm (101.325 kPa).

Ideal gas law is: PV = nRT

Where P will be the pressure, V will be the volume, n is number of moles, R is the ideal gas constant, and T will be the temperature.

At STP, the value of R is 0.0821 L·atm/mol·K.

The volume of the nitrogen gas sample is 1120 cm³, which is equivalent to 0.00112 m³.

Using the ideal gas law;

n = PV/RT

n = (1 atm) x (0.00112 m³) / (0.0821 L·atm/mol·K x 273.15 K)

n = 0.0000483 moles of nitrogen gas

To calculate the mass of nitrogen gas, we use the molar mass of nitrogen, which is 28.02 g/mol.

Mass of nitrogen gas = n x molar mass

Mass of nitrogen gas = 0.0000483 moles x 28.02 g/mol

Mass of nitrogen gas = 0.001355 g

To calculate the number of molecules of nitrogen gas in the sample, we use Avogadro's number, which is 6.022 x 10²³ molecules/mol.

Number of molecules of nitrogen gas = n x Avogadro's number

Number of molecules of nitrogen gas = 0.0000483 moles x 6.022 x 10²³ molecules/mol

Number of molecules of nitrogen gas = 2.91 x 10¹⁹ molecules

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Given parameters;

Mass of gold colored metal beads  = 425g

Volume of water displaced by beads = 48.0cm³

Unknown;

Identity of the metal = ?

Given densities;

Gold: 19.3 g/mL

Copper: 8.86 g/mL

Bronze: 9.87 g/mL

Density is an intensive property of any substance. This implies that we can use the density of any substance to identify it.

Density can be defined as the mass per unit volume of a substance. Every substance has a unique mass per volume.

 Mathematically;

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

where mass is in kg or g

           volume is in  m³ or cm³

To find the density, we must know the mass and volume.

In this problem, the volume of the gold metal beads is the same as the volume of water displaced. This is a way to measure volume of solids.

Since the volume is given in cm³, and we are comparing with choices that have units in g/mL, we simply convert the volume in cm³ to mL

                   1cm³  = 1mL³

So therefore, volume of gold colored metal is 48mL

Now input the parameters given and solve for the density;

           Density  = \(\frac{425g}{48mL }\)    = 8.85g/mL

From the given densities, we clearly see that copper is the metal since they both of similar densities.

The U.S. Treasuries act as benchmark bonds implies that they're measured in terms of the spread with regards to other treasuries.

A benchmark bond simply means the standard measure of the risk of a bond against the other bonds.

When we say that U.S. Treasuries act as benchmark bonds we mean that yields on other bonds are measured in terms of the spread over treasuries.

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Answer:

i cannot see the question due to the flash you used

Explanation:

Answer:

True

Explanation:

mass is always conserved in chemical reaction because mass is neither be created nor be destroyed (low of conservation of mass)

The given statement "mass is always conserved in chemical reactions" is true because a chemical reaction follows the principle of conservation of mass.

Chemical reactions can be defined as the process by which chemical changes occur that result in the production of new substances with new properties, thus making them a vital part of our everyday life.

In the process of chemical reactions, the total mass of the reactants is equal to the total mass of the products. This means that mass is always conserved in chemical reactions.

This principle of conservation of mass was discovered by the French chemist, Antoine Lavoisier, in the 18th century.

It is also important to note that mass is conserved in all chemical and physical changes. Therefore, the total mass of a system remains constant before and after any chemical or physical change. This conservation principle is widely accepted and holds true to date.

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To determine how much of a chemical to order, the assistant manager should analyze the lab's historical usage data, consider the lead time, and account for any storage limitations or shelf life concerns. Effective communication with the supplier can also provide valuable insights for optimizing the order quantity.

To determine how much of a specific chemical to order, the assistant manager of the lab needs to consider the lead time, which in this case is two weeks.

First, the assistant manager should analyze the usage of the chemical in the lab. This involves reviewing the historical data on how much of the chemical is typically consumed within a given time period, such as a week or a month. By understanding the average usage rate, the assistant manager can estimate the quantity needed for a specific duration.

For example, let's say the lab typically uses 10 liters of the chemical per week. With a lead time of two weeks, the assistant manager would need to order enough to cover the lab's needs for the next two weeks plus a safety stock to account for any unexpected increases in demand or delays in delivery.

To calculate the order quantity, the assistant manager can multiply the average weekly usage by the lead time. In this case, 10 liters per week multiplied by two weeks would result in an order quantity of 20 liters.

However, it's important to consider factors such as storage capacity and shelf life. If the lab has limited storage space or the chemical has a short shelf life, ordering a larger quantity may not be feasible. In such cases, the assistant manager might need to adjust the order quantity accordingly.

Additionally, the assistant manager should communicate with the supplier to check for any minimum order quantities or discounts offered for bulk purchases. This information can help optimize the order quantity and potentially reduce costs.

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The argon inside the container had a pressure of 101 mm Hg, according to the equation.

Stress is a term used to describe a physical force imparted to an item. A horizontal force is exerted per unit area to an object's surface. The basic formula for pressure is G n. (Force per unit area).

An SI unit of pressure, the pascal (abbreviated as Pa), is equal with one newton every sq.m (N/m2 or kg m-1s-2). Surprisingly, this name was chosen in 1971.

The height of the mercury level difference is

    h=10.1cm

With multiplying it by 10, we may translate it to millimeters.

     h=10.1*10=101mm

The closed manometer's pressure would be equal to its height.

P(gas)=h

P(gas)=101mmHg.

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Answer:

16:A

17:C

18:A

19B

Explanation:

Our current understanding of the atom is based on Dalton's early 19th-century idea of atomism, which was developed from meteorological investigations. John Dalton was just a meteorologist, an expert on color blindness, and a teacher, but he will be most widely recognized for creating the idea of atomism.

A scientist is someone who meticulously gathers data and uses it to develop theories, test those hypotheses, and further knowledge and understanding. Despite the fact that the name "scientist" predates Aristotle by more than two millennia, he is frequently referred to as the first scientist. He invented the methods of reasoning, observation, inquiry, and demonstration in Greece in the fourth century BC.

Because they provide specialized explanations for how the world functions, scientists play a crucial role in society. Science is a powerful tool for survival, despite the fact that it doesn't always provide us with joy, and humans have spent considerable time starting to figure out how to do both.

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Molecules in a perfume bottle travel from the bottle to your nose through the process of diffusion, where they move from an area of high concentration (inside the bottle) to an area of low concentration (surrounding air) until they reach your nose.

When a perfume bottle is opened, the perfume molecules escape into the surrounding air. These molecules are in constant motion due to their thermal energy. Through the process of diffusion, the perfume molecules move randomly and spread out from an area of high concentration (inside the bottle) to an area of low concentration (the air surrounding the bottle). This diffusion occurs as a result of molecular collisions and the tendency of molecules to move from regions of higher concentration to lower concentration until equilibrium is reached.

Once in the air, the perfume molecules continue to diffuse and mix with the surrounding air molecules. When you inhale, some of these perfume molecules can enter your nose and interact with olfactory receptors, triggering a sense of smell.

The mean free path refers to the average distance a molecule can travel before colliding with another molecule. In the context of perfume molecules in the air, the mean free path determines how far these molecules can move before encountering other air molecules. The mean free path depends on factors such as the size of the perfume molecules, the density of the air, and the temperature. In a perfume bottle, the mean free path of the perfume molecules may be relatively short due to the presence of other perfume molecules in close proximity.

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The elements in group IA are called alkali metals. The elements in group IIA are called alkaline earth metals. The elements in group VIIA are called the halogens and the elements in group VIIA are called the noble gases or inert gases.

Because, like all other group 1A elements, it has eight valence electrons. Like all other Group 1A elements, it has only one valence electron. The reason why hydrogen can be classified in both Group 1 and Group 17 is that hydrogen can easily form cations, making some of its properties similar to alkali metals.

Although it can be placed in Group 1 of the periodic table, its properties differ from those of halogens because hydrogen is a non-metal and forms H2, which is the true property of halogens, being placed above the group of the periodic table. is also similar. The ns1 electrons are arranged like alkali metals. However, it differs significantly from alkali metals in that it is less likely to form cations H+ than other alkali metals.

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Answer:

non of them it is

halogen elements