what is the molarity of nacl in a solution, when 97.4 g of nacl (formula mass = 58.4 g/mol) are used to make a final solution of 897. ml? enter answer to 3 decimal places.

Answer:

malleable

Explanation:

The image represent in malleable property of metal.

The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.

Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.

Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.

Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.

https://brainly.com/question/33514448

#SPJ2

Emphysema can lead to respiratory acidosis acid/base disturbance.The compensated respiratory acidosis is typically the result of the chronic condition  , the slow nature of onset giving the kidney time to compensate.

If the primary acid-base disorder is from respiratory , then the kidneys will compensate. If the primary acid-base disorder is from metabolic cause, then the lungs will compensate.The respiratory compensation can be begin within minutes and becomes maximal in 12-24 hours

The respiratory acidosis occurs when breathing out does not get of enough \(CO_{2}\) . The increased \(CO_{2}\) that  remains results in overly acidic blood. This can results from respiratory problems.

Learn more about acids,

https://brainly.com/question/14072179

#SPJ4

Answer:

  72.8 liters (see comment below)

Explanation:

You want the volume of CO₂ at STP resulting from the decomposition of 3.25 moles of CaCO₃.

The balanced reaction is ...

  CaCO₃(s) + heat ⇒ CaO(s) + CO₂(g)

This tells you that 3.25 moles of CaCO₃ will evolve 3.25 moles of CO₂ gas.

At STP, each mole of gas has a volume of 22.4 liters. The volume of CO₂ produced is ...

  (3.25 mol) × (22.4 L/mol) ≈ 72.8 L

At STP, the volume of gas produced is 72.8 liters.

__

Additional comment

After 1982, the IUPAC defined STP as 0 °C, 100 kPa, so one mole of gas occupies 22.711 liters. If this is the value of STP you're to use, then the appropriate answer is ...

  (3.25 mol) × (22.711 L/mol) ≈ 73.8 L

Prior to 1982, IUPAC standard pressure was 1 atm, or 101.325 kPa. At that pressure the volume of one mole is 22.414 liters. Many authors continue to use this definition of STP, so that is the value we have used in the answer above.

We have rounded the volume to 3 significant figures, in accordance with the precision of the given amount of material.

Action potentials are generated at the axon hillock and are conducted along the axon.

The axon hillock is the region of the neuron where the axon originates from the cell body. It is responsible for integrating the incoming signals from the dendrites and initiating the action potential. Once the action potential is initiated, it travels down the axon, which is a long, slender projection of the neuron. The axon is insulated by the myelin sheath, which helps to increase the speed of conduction.

At the end of the axon, the action potential reaches the terminal buttons, which are small knobs that release neurotransmitters into the synapse, a gap between neurons. From there, the neurotransmitters can bind to receptors on the dendrites of the next neuron, initiating a new round of electrical activity. The glial membrane surrounds both the axon and dendrite, providing support and insulation for the neuron.

Learn more about Action potentials here: https://brainly.com/question/30774630

#SPJ11

Answer:

b

Explanation:

Answer:

B) 4,1,2,3

Explanation:

Did it on USA Test prep. :)

Explanation:

In order to go from mass of magnesium to atoms of magnesium, we have to do two things:

   Convert mass of Mg to moles of Mg using the molar mass of Mg as a conversion factor

   Convert moles of Mg to atoms of Mg using Avogadro's number (6.02×1023) as a conversion factor

Step 1:

Before we start, I should note that the molar mass of Mg is 24.31gmol. We can go from mass to moles using dimensional analysis. The key to dimensional analysis is understanding that the units that you don't need any more cancel out, leaving the units that are desired:

48.60g

×1mol24.31g

=2.00mol

Step 2:

We'll use this relationship:

www.sprinklernewz.uswww.sprinklernewz.us

Using the moles of Mg that we just obtained, we can use Avogrado's number to perform dimensional analysis in order to cancel out units of mol to end up with atoms of Mg:

2.00mol

×6.02×1023atoms1mol

=1.204×1024atoms

Thus, 48.60g of Mg is equivalent to 1.204×1024atoms

Hope this helped :)

Answer:

It is not possible to accurately determine whether the system or the surroundings performs work in a chemical reaction without more information about the specific reaction and the conditions under which it occurs.

In general, the work done in a chemical reaction can be affected by several factors, including the pressure, volume, and temperature of the system, as well as the nature of the reactants and products. Some reactions may result in the system doing work on the surroundings, such as when gases expand and do work on their surroundings by pushing against a piston or other external object. Other reactions may result in the surroundings doing work on the system, such as when gases are compressed and their surroundings do work on them. Still other reactions may result in essentially no work being performed, such as when the reactants and products are in equilibrium or when the volume of the system remains constant.

Without more information about the specific reaction in question, it is not possible to accurately determine whether the system or the surroundings performs work.

The ta swirls the erlenmeyer flask containing benzoic acid and ethanol to facilitate the mixing of the two substances. Swirling the flask helps to increase the surface area of contact between the benzoic acid and ethanol, allowing for a more efficient and thorough mixing process.

When the ta swirls the flask, it creates a vortex within the liquid, causing the substances to come into closer contact with each other. This helps to speed up the dissolution of the benzoic acid in the ethanol. Swirling also helps to distribute heat evenly throughout the mixture, which can aid in the dissolution process if the reaction is exothermic.

Additionally, swirling the flask can prevent the formation of local concentration gradients within the liquid. This is particularly important when dealing with substances that may have different densities or solubilities. Swirling the flask ensures that the mixture remains homogeneous and prevents the formation of any localized areas of high or low concentration.

Overall, swirling the erlenmeyer flask containing benzoic acid and ethanol helps to promote efficient mixing, dissolution, and homogeneity of the two substances. It allows for a more effective reaction and ensures that the desired outcome is achieved.

Learn more about benzoic acid  here:-

https://brainly.com/question/3186444

#SPJ11

The general name for the process by which molecules or ions are surrounded by solvent molecules is called solvation.

This process occurs when a solute dissolves in a solvent, resulting in the formation of a homogeneous solution. The solute molecules or ions are surrounded by solvent molecules, which helps to stabilize the solute and prevent it from reassociating into a solid form. Solvation is an important process in many chemical reactions and is essential for the proper functioning of biological systems.

In summary, solvation is the process by which solute molecules or ions are surrounded by solvent molecules, resulting in the formation of a homogeneous solution.

To know more about solvent molecules refer here:

https://brainly.com/question/13453774

#SPJ11

Answer:

2OH-(aq) + Fe3+(aq) → Fe(OH)3(s)

Explanation:

The balanced molecular equation for the reaction between calcium hydroxide (Ca(OH)2) and iron(III) chloride (FeCl3) is:

Ca(OH)2(aq) + FeCl3(aq) → Fe(OH)3(s) + CaCl2(aq)

To write the net ionic equation, we first need to break down the soluble reactants and products into their respective ions:

Ca(OH)2(aq) → Ca2+(aq) + 2OH-(aq)

FeCl3(aq) → Fe3+(aq) + 3Cl-(aq)

Fe(OH)3(s) → Fe3+(aq) + 3OH-(aq)

CaCl2(aq) → Ca2+(aq) + 2Cl-(aq)

Next, we need to identify the spectator ions, which are ions that appear on both sides of the equation and do not participate in the reaction. In this case, the spectator ions are Ca2+ and 2Cl-.

Therefore, the net ionic equation is:

2OH-(aq) + Fe3+(aq) → Fe(OH)3(s)

This equation shows the actual chemical change that occurs during the reaction, with only the ions and molecules that participate in the reaction shown.

The statement is true in this situation is C. The size of Ffric is the same as the size of Fapp:

From the diagram, since the body is in equilibrium, the sum of vertical forces equals zero. Also, the sum of horizontal forces equal zero.

So, ∑Fx = 0 and ∑Fy = 0

Since Fapp acts in the negative x - direction and Ffric acts in the positive x - direction,

∑Fx = -Fapp + Ffric = 0

-Fapp + Ffric = 0

Fapp = Ffric

Also, since Fgrav acts in the negative y - direction and Fnorm acts in the positive y - direction,

∑Fy = Fnorm + (-Fgrav) = 0

Fnorm - Fgrav = 0

Fnorm = Fgrav

So, we see that the size of Fapp equals size of Ffric and the size of Fnorm equals the size of Fgrav.

So, the correct option is C

The statement which is true in this situation is C. The size of Ffric is the same as the size of Fapp.

Learn more about equilibrium of forces here:

https://brainly.com/question/12980489

The balanced equation for the reaction of iron with water that results in the production of iron oxide and hydrogen gas is

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

Iron does not react directly with liquid water but react with water vapour. When the reaction happens, it results in the formation of a solid and a gas. The products of the reaction are Iron oxide and hydrogen. The equation of the reaction would be

Fe (s) + H₂O (g) → Fe₃O₄ (s) + H₂ (g)

Now, we need to balance the equation. On the right-hand side, we have 3 Fe, 4 O and 2 H. Similarly on the left-hand side there are 1 Fe, 1 O and 2 H.

To balance the equation, we add 3 to Fe, 4 to H₂0 and 4 to H₂.

As a result, the balanced chemical equation for the reaction would be

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

To know more about Balanced equation

https://brainly.com/question/12192253

#SPJ1

A solution is defined as the homogeneous mixture of two or more non reacting substances. It constitute a single phase system. Here the water is called the solvent.

A solution which is made up of two components or constituents is generally defined as the binary solution. The term solute is commonly used to refer to the constituent that dissolves and the term solvent is that in which the dissolution takes place.

In general, solute is the component which is present in smaller amount whereas the solvent is present in larger amount.

Thus in the sugar solution, sugar is the solute and water is the solvent.

To know more about solution, visit;

https://brainly.com/question/29058690

#SPJ1

Answer: Due to the sharing of electrons, they exhibit characteristic physical properties that ... Here, we discuss two classes of compounds based on the bond type that ... Covalent bonds are characterized by the sharing of electrons between two or ... Describe the types of orbital overlap that occur in single, double, and triple bonds

Explanation: That's what I think it is.

Answer:

D

Explanation:

1/2 will be lit with 'daylight' and the other half will be dark

Answer:

B. is the answer

Explanation:

(A) (B) + (C) (D) (AD) +(CB)

(H) (F) + (Na) (OH) --> H2O+NaF

Answer:

0.071 moles of Na₃PO₄

Explanation:

Given data:

Number of moles of Na₃PO₄ = ?

Number of molecules of Na₃PO₄ = 4.3×10²² molecules

Solution:

1 mole contain 6.022×10²³ molecules

4.3×10²² molecules × 1mol / 6.022×10²³ molecules

0.71×10⁻¹ mol

0.071 mol

The number 6.022 × 10²³ is called Avogadro number.

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

Answer:

4.  0.5 kilometers (1st option)

5.  0.1 00 liters (last option)

Explanation:

500 meters to kilometers

4.

1 kilometer = 1000 meters

We use the formula SBD (SMALL TO BIG DIVIDE) i hope this helps you

500 ÷ 1000

= 0.5 kilometers

5.

100 milliliter to liter

SBD

100 ÷ 1000

= 0.1 00 liters

The density of the main band can change over 4 generations due to factors such as natural selection, genetic drift, gene flow and  mutation, which all contribute to the changing frequencies of traits within a population.

To explain why the density of the main band changed over 4 generations, we must first understand the terms "main band" and "density."

The "main band" refers to the predominant group or trait in a population, while "density" refers to the amount or concentration of that group or trait within the population.

Now, let's address why the density of the main band changed over 4 generations:

1. Natural selection: The environment may favor certain traits, leading to the survival and reproduction of individuals with those traits. Over generations, this can cause the density of the main band to change as the favored traits become more common.

2. Genetic drift: Random fluctuations in the frequency of traits within a population can cause the density of the main band to change over generations. This is especially common in small populations, where chance events can have a significant impact on the overall genetic makeup.

3. Gene flow: The movement of individuals and their genetic material between populations can introduce new traits or change the frequency of existing traits in the main band, causing its density to change over generations.

4. Mutation: New genetic variations can arise through mutations, which can cause the density of the main band to change if the new variation becomes more common over generations due to natural selection or genetic drift.

In conclusion, the density of the main band can change over 4 generations due to factors such as natural selection, genetic drift, gene flow, and mutation, which all contribute to the changing frequencies of traits within a population.

Learn more about natural selection, genetic drift, gene flow and mutation : https://brainly.com/question/15856790

#SPJ11

Answer:

switch

Explanation:

maybe the switch is not on

Answer:

1.maybe the switch is not on

2.low voltage of the electrical source

3.the connecting wires could be too long

if a lab requires 2.0 L of a 2.5M solution of barium hydroxide, 856.7 grams of barium hydroxide will be needed.

The mass of a substance can be calculated by multiplying the number of moles by its molar mass.

However, the number of moles in 2.0 L of a 2.5M solution of barium hydroxide can be calculated as follows:

no of moles = 2L × 2.5M = 5 moles

Molar mass of Ba(OH) = 171.34g/mol

mass of barium hydroxide = 171.34 × 5

mass of barium hydroxide = 856.7g

Therefore, if a lab requires 2.0 L of a 2.5M solution of barium hydroxide, 856.7 grams of barium hydroxide will be needed.

Learn more about mass at: https://brainly.com/question/1578538

The population of shrimp would likely decrease if the number of crabs increases.

Shrimp and crabs often have a predator-prey relationship in their natural habitats. When the population of crabs increases, it can lead to an increase in predation pressure on shrimp. As a result, the shrimp population may decrease. Crabs are known to feed on shrimp, and an increase in the number of crabs means more predation on the shrimp population.

The increase in the crab population can have several effects on shrimp. Firstly, the increased predation pressure can directly lead to a higher mortality rate among shrimp, reducing their population size. Secondly, the presence of more crabs may also affect the behavior and distribution of shrimp. Shrimp may alter their feeding and reproductive patterns, potentially leading to reduced survival and reproduction rates.

Additionally, competition for resources such as food and habitat can intensify with an increase in crab population. This competition can further impact the shrimp population, limiting their access to vital resources and contributing to population decline.

Overall, an increase in the crab population is likely to have a negative impact on the population of shrimp, leading to a decrease in their numbers.

Learn more about predator-prey relationship here:

https://brainly.com/question/12527452

#SPJ11

The freezing points of 1 liter of water with added solutes are: a) -0.28°C with 25g glucose; b) -0.28°C with 25g sucrose; and, c) -0.93°C with 25g sodium chloride. The vapor pressure of CO2 at the boiling point of liquid nitrogen is 517 kPa.

To estimate the freezing point depression, we use the formula ΔTf = Kf * molality * i, where ΔTf is the freezing point depression, Kf is the cryoscopic constant of water (1.86°C kg/mol), molality is moles of solute per kg of solvent, and i is the van't Hoff factor.

For glucose and sucrose, i=1, and for sodium chloride, i=2. Divide the mass of each solute by its molar mass to find moles, and then divide by the mass of solvent in kg (1 kg for 1 liter of water) to find molality. Calculate ΔTf for each case and subtract it from the freezing point of pure water (0°C).

The vapor pressure of CO2 is found using the sublimation pressure at the boiling point of liquid nitrogen (-195.8°C). Using the Clausius-Clapeyron equation, we calculate the vapor pressure to be approximately 517 kPa.

To know more about freezing point depression click on below link:

https://brainly.com/question/31357864#

#SPJ11

In a Galileo thermometer, the spheres differ in mass by 1.2 g. The correct answer is option c.


The Galileo thermometer operates on the principle of buoyancy. Each sphere contains a specific amount of liquid, such as ethanol or water, which expands or contracts with temperature changes. The spheres are carefully calibrated so that each one has a slightly different mass. When the temperature rises, the liquid in the spheres expands, making them less dense. The sphere with the greatest mass sinks to the bottom, while the lighter spheres float at various levels.

By observing the position of the spheres, one can determine the approximate temperature. The difference in mass between the spheres ensures that each one responds differently to temperature changes, providing accurate temperature readings. In this particular Galileo thermometer, the spheres differ in mass by 1.2 g.

Learn more about buoyancy here:

https://brainly.com/question/30641396

#SPJ11

The oxidation numbers of the elements show us the number of electrons lost or gained which is traceable from the electron configuration which in turn depends on the group that the atom belongs to.

The oxidation number is the number of charges that an atom appears to have. We know that the elements that we find in the groups  IA through VIA only have a narrow range of oxidation numbers. This is because the oxidation numbers does depend on the number of electrons that the atom can be able to loose or gain at a time.

We know that each of the groups are known by the maximum number of electrons that can be found on the outermost shell of the atom. This is part of the electron configuration of the atom. Thus, if we know the group that an atom belongs to, we can at least tell the outer electron configuration of the atom because we know that all the atoms in that group have the same outer electron configuration.

Learn more about electron configuration:https://brainly.com/question/14283892

#SPJ1

Answer:

they have different mass numbers

Explanation:

Answer:

Explanation:

Why is there a star * behind the question.

CaCl2

Al2(SO4)3

NaOH

Isotopes.

Atoms of the same element that have different numbers of neutrons but the same number of protons are called Isotopes.

Answer:

soysauce bro

Explanation:

Answer:

trail mix

Explanation:

a heterogeneous mixture is a mixture with non-uniform composition. two or more of the mixture's components must be separate for the mixture to be heterogeneous.