True or False: bulk deformation of magnesium is only possible at hot-working temperatures somewhat above the melting point

The concentration of potassium ions, K⁺ in the solution obtained by mixing 480 mL of 0.410 M KOH with 440 mL of 0.290 M K₂SO₄ is 0.491 M

We'll begin by calculating the number of mole of potassium ion, K⁺ in each solution.

Volume = 480 mL = 480 / 1000 = 0.48 L

Molarity = 0.410 M

Mole = Molarity x Volume

Mole of KOH = 0.410 × 0.48

KOH(aq) —> K⁺(aq) + OH¯(aq)

From the balanced equation above,

1 mole of KOH contains 1 mole of K⁺

Therefore,

0.1968 mole of KOH will also contain 0.1968 mole of K⁺

Thus, 0.1968 mole of K⁺ is present in 480 mL of 0.410 M KOH

Volume = 440 mL = 440 / 1000 = 0.44 L

Molarity = 0.290 M

Mole = Molarity x Volume

Mole of K₂SO₄ = 0.290 × 0.44

K₂SO₄(aq) —> 2K⁺(aq) + SO₄²¯(aq)

From the balanced equation above,

1 mole of K₂SO₄ contains 2 moles of K⁺

Therefore,

0.1276 mole of K₂SO₄ will contain = 0.1276 × 2 = 0.2552 mole of K⁺

Thus, 0.2552 mole of K⁺ is present in 440 mL of 0.290 M K₂SO₄

Mole of K⁺ in KOH = 0.1968 mole

Mole of K⁺ in K₂SO₄ = 0.2552 mole

Total mole = 0.1968 + 0.2552

Volume of KOH = 0.48 L

Volume of K₂SO₄ = 0.44 L

Total volume = 0.48 + 0.44

Total mole = 0.452 mole

Total volume = 0.92 L

Molarity = mole / Volume

Molarity of K⁺ = 0.452 / 0.92

Therefore, the molarity of potassium ion, K⁺ in the resulting solution is 0.491 M

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The asbestos exposure during the years 1982 and 1983 was 2.5 fibers per cubic centimeter and 0.8 fibers per cubic centimeter respectively. So asbestos exposure decreased by 1.7 fibers per cubic centimeter during the year 1983.

Breathlessness Persistent, dry cough Chest pain or tightness Lack of a dry, crackling sound in the lungs when you breathe in Wider and rounder fingers and toes are some of the symptoms of asbestos exposure.

The largest group of people exposed to asbestos is those working in the construction industry. Historically, asbestos was also used by pipe fitters and shipyard workers. In addition, asbestos was used by military personnel, auto mechanics, and many other occupations.

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Answer:

any gas takes up 22.4L per mole so 2.4*22.4=53.76

Explanation:

In 2.4 moles at STP, 53.79 litres of N2 gas are present.

Moles are defined as the amount of substance of a system that contain the same number of entities as the number of atoms in 12g of carbon 12.

STP is defined as the standard temperature and pressure. At STP, as system has s temperature of zero degree centigrade or 273 Kelvin and the pressure is 1 atm.

PV= nRT

P= 1 atm

V= ?

n= 2.4 moles

R= 0.0821 L atm /K/mol

1 x V = 2.4 x 0.0821 x 273

V = 53.79 litres

Hence, 53.79 litres of N2 gas is present in 2.4 moles at STP.

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When a physical change in a sample occurs, composition of sample does not change.

Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.

Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.

They involve only rearrangement of atoms and are often characterized to be changes which are reversible.

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Acids: \(\text{H}_{2}\text{PO}_{4}^{\text{ }-}\) and \(\text{H}_{2}\text{BO}_{3}^{\text{ } -}\)

Bases: \(\text{HBO}_{3}^{\text{ } 2-}\) and \(\text{HPO}_{4}^{\text{ } 2-}\)

Answer:

Explanation:

The density would be 4.

Answer:Make sure vyour formatting is clear and easy to understand. Remember, it’s all about helping others understand the answer.

Explanation:

Make sure your formatting is clear and easy to understand. Remember, it’s all about helping others understand the answer.

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The steps I performed:

Answer:

ES UN MINERAL Y ESTA FORMADO POR ATOMOS DE OROExplicación:SI TE SIRVIO DA GRACIAS Y DA CORONA

Explanation:

The best description of the relationship between population size, carrying capacity, and limiting factors is: "The size of a population usually stays near its carrying capacity due to limiting factors."

Carrying capacity refers to the maximum number of individuals that a particular environment can sustainably support. It represents the limit to which a population can grow given the available resources, such as food, water, and habitat. Limiting factors, on the other hand, are the factors that restrict population growth by reducing birth rates, increasing death rates, or limiting access to resources.As a population approaches its carrying capacity, limiting factors come into play and regulate the population size. These limiting factors can include competition for resources, predation, disease, availability of suitable habitat, and other environmental factors. They act as checks on population growth, preventing it from exceeding the carrying capacity of the ecosystem.

Therefore, the size of a population usually stays near its carrying capacity because the limiting factors ensure that the population does not exceed the available resources and ecological limits of the environment. If the population surpasses the carrying capacity, the limiting factors will intensify, causing a decline in resources and an increase in mortality rates, which ultimately brings the population back towards the carrying capacity.It's important to note that the relationship between population size, carrying capacity, and limiting factors is dynamic and can vary depending on various ecological and environmental factors.

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The term that refers to the passing of a wave through an object is "transmission."

Transmission refers to the process by which a wave passes through an object or medium. In the context of sound, transmission occurs when sound waves travel through different substances, such as air, water, or solids.

When a sound wave encounters an object, it can be transmitted through it, reflected off it, or absorbed by it, depending on the properties of the object and the medium through which the sound is traveling.

For example, when you speak into a microphone, the sound waves produced by your voice travel through the air and are transmitted to the microphone's diaphragm. The diaphragm converts the sound waves into electrical signals, which can then be amplified and reproduced as sound through speakers.

In summary, transmission is the term used to describe the passage of a wave, such as a sound wave, through an object or medium. It is an essential concept in understanding how waves interact with their surroundings and how sound propagates through different materials.

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Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

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According to law of conservation of mass, if  23 g of A reactant  completely reacts with 27 g of B to produce 11 g of C,39 grams of D product will be produced.

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.

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Answer:

there aint no evidence or answer for dis my man

Explanation:

The object's mass is 2.756 g/mL as a result.

Give the object's density Do and water's density Dwater. The object's weight in the air is then given by Mair = Do * V. Mwater = (Do - Dwater) times V is the formula for calculating an object's weight in water. Volume V cancels out when one equation is divided by the other, and the ratio of the two measurements is Mair/Mwater = Do/.(Do - Dwater).

The following formula can be used to determine an object's density:

Density = Mass / Volume

where the object's mass is specified as 13.1045 g, and the volume is the amount of water that has been moved.

The water level rises by 4.75 mL when the object is submerged, which means that the volume of water displaced is 4.75 mL.

Density = 13.1045 g / 4.75 mL = 2.756 g/mL

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NaOH reacts with benzoic acid to form sodium benzoate therefore, aqueous NaOH is a bad choice for the recrystallization of benzoic acid.

Recrystallization is a process of obtaining a pure solute by dissolving a solute in a solvent at high temperature and cooling the solution rapidly so that the pure solute can crystallize out of solution.

It is important to note that the solute must not react with the solution from which it is to be recrystallized. Unfortunately, NaOH reacts with benzoic acid to form sodium benzoate therefore, aqueous NaOH is a bad choice for the recrystallization of benzoic acid.

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Types of luminous flames:

1. Yellow Luminous Flame

2. Smoky Luminous Flame

3. Orange Luminous Flame

4. Blue Luminous Flame

Luminous flames are characterized by their visible glow, which is caused by the incomplete combustion of fuel. The presence of soot particles in the flame causes the emission of light. There are different types of luminous flames, which can be classified based on their fuel composition and burning conditions. Here are some common types of luminous flames:

1. Yellow Luminous Flame: This is the most common type of luminous flame, often seen in open fires, candles, and gas stoves. It appears yellow due to the presence of soot particles in the flame. Yellow flames indicate incomplete combustion of hydrocarbon fuels, such as methane, propane, or natural gas. The high carbon content in these fuels leads to the formation of soot, which emits visible light.

2. Smoky Luminous Flame: This type of flame is characterized by a significant amount of black smoke and soot production. It is commonly observed in poorly adjusted or malfunctioning burners or engines. The excessive presence of unburned fuel in the flame results in incomplete combustion and the emission of dark smoke particles.

3. Orange Luminous Flame: An orange flame indicates a higher combustion temperature compared to a yellow flame. It is often seen in more efficient burners or when burning fuels with a higher carbon content, such as oil or diesel. The higher temperature helps in burning more of the carbon particles, reducing the amount of soot and making the flame appear less yellow.

4. Blue Luminous Flame: A blue flame is typically associated with complete combustion. It indicates efficient burning of fuel, resulting in minimal soot formation. Blue flames are commonly observed in gas burners or Bunsen burners. The blue color is a result of the combustion of gases, such as methane, in the presence of sufficient oxygen.

It's important to note that the luminosity of a flame can vary depending on factors such as fuel-air mixture, combustion temperature, and the presence of impurities. Achieving complete combustion and minimizing the production of soot is desirable for efficient and cleaner burning processes.

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Answer:

all you have to so answer it all done

The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

When a hot metal plate is placed in air at room temperature, heat transfer occurs between the metal and the surrounding air. The metal plate, being at a higher temperature, transfers heat to the surrounding air through conduction and convection. As a result, the air molecules that are in direct contact with the hot metal will gain energy and start moving at higher speeds.

On the other hand, the molecules in the metal plate will lose energy to the cooler air and, consequently, slow down. This is due to the transfer of thermal energy from the metal to the air.

Therefore, the most likely event over the next few minutes is that the air molecules surrounding the metal will speed up, and the molecules in the metal will slow down.

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When a hot metal plate at 150°C is placed in the air at room temperature, the heat transfers from the hot object to the cooler one - the warmer metal plate's molecules will slow down as they lose heat and the cooler air molecules surrounding it will speed up as they gain heat.

If a hot metal plate at 150°C is placed in the air at room temperature, the event that would most likely happen over the next few minutes is that the air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Explanation: Heat typically transfers from hotter objects to cooler objects according to the laws of thermodynamics. So, when a heated metal plate is placed in a cooler environment, the heat energy from the metal plate will transfer to the cooler air molecules. As a result, the air molecules will begin to move faster and the metal molecules will begin to slow down as the metal plate cools. This process continues until the metal plate and the air have reached a state of thermal equilibrium, which is when they have the same temperature.

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All the participants in the Genius Dog Challenge are Border Collies, which some experts believe to be the intelligent breed of dog.

Border Collie is the name of a breed of dog that is characterized by:

Border Collies have physical characteristics such as:

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So,

We want to find the number of moles of Fe(OH)3 produced from 5.0 moles of NaOH according to the reaction:

We can see that NaOH and Fe(OH)3 have a 3:1 ratio due to the reaction coefficients. This means that, per each mol of Fe(OH)3, 3 moles of NaOH react.

Using this proportion, we have:

Therefore, the answer is 1.7 moles of Fe(OH)3.

Answer:

Fatty foods become rancid due to the process of rancidity

Answer:

question 1, i'd say not enough information

question 2, do you know of potassium bromine lowers the entropy of the water solution or raises the entropy level? if so entropy is either A or C

question 3, i'd say entropy is less than 0, but i don't know because i never learned this in school

Explanation:

we don't know the original volume of gas and only know the elements that are in it

Answer:

Because it devolved

Explanation:

The sugar can no longer be seen because upon solubilization;

Definition:

Solubility is characterized by the formation of new bonds between the solute molecules and solvent molecules.

In this case; the solute is sugar while the solvent is Water.

PS: The mixture formed from sugar and water is called Sugar syrup.

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Answer:

here are what i have so far, im doing this right now

Explanation:

Plate Tectonics Lab Report

Instructions: In the Plate Tectonic lab you will investigate the interactions between continental and oceanic plates at convergent, divergent, and transform boundaries around the globe. Record your observations in the lab report below. Y

Objective(s):  

To look at interactions between continental and oceanic plates, etc.  

Hypothesis:

In this section, please include the if/then statements you developed during your lab activity for each location on the map. These statements reflect your predicted outcomes for the experiment.

Location One: Select three events that you predict will be observed. If I explore two continental plates at a convergent boundary, then I will observe:

• earthquakes  

• mountains

• volcanoes

Location Two: Select three events that you predict will be observed. If explore two continental plates at a divergent boundary, then I will observe:  

• ocean formation  

• volcanoes

• seafloor spreading

you will submit your completed report

ps; you might want to change up the objective.

A geological event is a brief, spatially diverse, dynamic and ongoing occurrence in the history of the Earth.

A geological event is a brief, spatially diverse, dynamic (diachronous), and ongoing occurrence in the history of the Earth that aids in the modification of the Earth system and the production of geological strata. The concept of event stratigraphy initially came up as a way to identify, analyse, and correlate how significant physical and biological events have affected the overall stratigraphical record.

Israel's Dead Sea basin Holocene sediments contain seismic activity. This can be considered a record of a geological event, an earthquake, that altered the strata. Geological events can occur over timescales of order of magnitude, from just a few seconds through millions of years, as well as on a variety of spatial scales, from the local to the globe.

1. Volcanoes and minor earthquakes

2. Volcanoes, earthquakes and fold mountains.

3. Earthquakes and fold mountains.

4. Magma from volcanoes is filled with nutrients that makes land fertile.

Therefore, a geological event is a brief, spatially diverse, dynamic and ongoing occurrence in the history of the Earth.

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A food chain refers to the order of events in an ecosystem, where one living organisms eats another organisms and later that organism is consumed by another larger organism. It also explains the feeding pattern.

The food chain is a linear sequence of organisms where the nutrients and energy is transferred from one organism to the other. It begins with the producer and ends with decomposer.

The producers in a food chain consists of all autotrophs like phytoplankton, algae and green plants. It is the producers which utilize the energy from the sun to produce food.

Thus the correct option is B.

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Answer:

A small amount of chemical splashes in Frank's eye. What should happen next? Frank should go to the eyewash station while his lab partner tells the teacher what happened.

Explanation:

Brainlist

Answer:

Honey has a higher level of ___viscosity__ than water, so it has a higher resistance to flow.(I'm sorry if it wrong)