Solution A Solution B


Particle Size of Salt large clumps tiny grains


Temperature of Solvent cold water hot water


Level of Agitation slow stirring fast stirring




What conclusion can be drawn from these solutions?



A.


Solution A will take less time to dissolve, because gently stirring will allow it to combine more evenly.



B.


Solution B will take longer to dissolve and might have some undissolved salt remaining at the bottom of the solution due to the high temperature.



C.


Solution B will take less time to dissolve, because hot water will cause some of the salt to evaporate.



D.


Solution A will take longer to dissolve and might have some undissolved salt remaining at the bottom of the solution due to the low temperature

The rate law that is consistent with the proposed mechanism is [-d[H₂]/dt = k[H₂][ICl].

The sum of the two processes produces the overall reaction, which is:

H₂(g) + 2ICl(g) → 2HCl(g) + I₂(g)

We must take into account the rate-determining step, which is the step with the slowest rate, in order to derive the rate law for the total reaction. It is step 1 in this instance.

H₂(g) + ICl(g) → HI(g) + HCl(g) is the rate-determining step (g)

This step's rate rule is-d[H₂]/dt = k[H₂][ICl]

[ICl]

We can assume that the concentration of HI is always in equilibrium with the concentrations of H₂ and ICl because step 2 is quick.

Therefore, -d[H₂]/dt = k[H₂][ICl] is the rate law for the entire reaction.

Therefore,  [-d[H₂]/dt = k[H₂][ICl] is the rate law that is consistent with the hypothesized mechanism.

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Sucrose; C12H22O11

C9H8O4; acetyl salicylic acid

H2O2; hydrogen peroxide,

NaOH; sodium hydroxideExplanation:

Answer:

Where are the answer choices

?

The four types of crystals are ionic crystals, metallic crystals, covalent crystals, and molecular crystals.

Crystal, any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry.

An ionic crystal is a crystalline ionic compound. They are solids consisting of ions bound together by their electrostatic attraction into a regular lattice.

A crystalline solid in which the atoms are held together by metallic bonds. Metallic crystals are found in some interstitial compounds as well as in metals and alloys.

Covalent Crystals also called atomic crystals are the molecular solids in which the same or different atoms are joined together by covalent bonding.

Molecular crystals are substances that have relatively weak intermolecular binding, such as dry ice.

Thus, there are four types of crystals such as ionic crystals, metallic crystals, covalent crystals, and molecular crystals.

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The quantum numbers for the electron removed to form the Cu²⁺ ion are: n=4, l=1, ml=-1, ms=+1/2.

When a copper atom (Cu) loses one electron to form the Cu²⁺ ion, we can determine the quantum numbers of the removed electron based on the rules governing electron configurations.

The principal quantum number (n) represents the energy level of the electron. In this case, the electron is being removed from a copper atom, which has an electron configuration of [Ar] 3d¹⁰ 4s¹. Since the electron is being removed from the 4s orbital, the principal quantum number is n=4.

The azimuthal quantum number (l) specifies the orbital shape. The 4s orbital has l=0, and the 3d orbital has l=2. Since the electron being removed is from the 4s orbital, the azimuthal quantum number is l=0.

The magnetic quantum number (ml) determines the orientation of the orbital. Since the 4s orbital has only one orientation, ml can be either -1 or +1. In this case, ml=-1.

The spin quantum number (ms) describes the spin state of the electron. It can be either +1/2 or -1/2. The removed electron has a spin state of +1/2.

Therefore, the quantum numbers for the electron removed to form the Cu²⁺ ion are n=4, l=1, ml=-1, and ms=+1/2.

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Answer:monoprotic

Explanation:

Answer:

It is a Mixture

Explanation:

It's a mixture because it was a substance made from mixing other substances together. And when the magnet went over the powder, the iron  is lifted and not the sulfur. So the different parts of it can be separated by any physical means that allows the parts to seen separated

Answer:

its is a mixture

Explanation: because I did the question

Answer:

Use the chart below to help you. Follow the arrows

Explanation:

For instance, number 8 is where liquid is going to solid. The chart tells you that it's freezing.

X=10

Explanation and workout is in the photo attached with this answer

The formula mass of hydrated sodium sulfate is Na₂SO₄.10H₂O. The value of x is equal to 10.

A mole is the amount of substance containing the same number of elementary entities as the number of atoms present in a pure sample of any element.

A mole is also described as the amount of a substance that contains 6.022×10²³ fundamental entities of the given substance.

The mole concept is a convenient method of representing the amount of a substance.

Given, the mass of the hydrated sodium sulfate = 10.0g

The mass of the anhydrous sodium sulfate is produced = 4.40g

Mass of the water evaporated as water on heating = 10.0 - 4.40 = 5.6g

The number of moles of water = 5.6/18 = 0.31 mol

Similarly, the number of moles of sodium sulfate = 4.4/142.04 = 0.031 mol

The ratio of the number of the moles of the sodium sulfate and water:

\(\frac{n(H_2O)}{n(NaSO_4)}=\frac{0.31}{0.031} = 10\)

Therefore, the ten moles of water will be evaporated for the one mole of sodium sulfate. Therefore, the formula mass is Na₂SO₄.10H₂O.

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Answer:

the level below which the ground is saturated with water.

Explanation:

Answer:

Option A.

Explanation:

If you picture the Periodic Table in your head...

you'd see that the Metals are located at the left hand part of the periodic table and their Metallic Character Increases as you go down the group.

So if you travel from the right, towards the left...You'd come across your Metals.

In order words... Option A is your answer.

"Fog forms in a valley", a physical process called condensation occurs when a gas or vapour transforms into a liquid state.

On a chilly soda can, water gathers. As the air cools around the container, water vapor in the atmosphere reaches its dew point and condenses into liquid droplets. Condensation is the conversion of water vapor into liquid. On the outside of a chilly glass or container, water vapor condenses and turns into liquid water (sweat).

Aldol condensation, Knoevenagel condensation, Claisen condensation, and Dieckman condensation (intramolecular Claisen condensation) are a few examples of common condensations that produce alcohols as a by-product.

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Answer:

Groups

Explanation:

groups are located horizontally

Answer: 196.68 mL

Explanation:

Using Boyle's law:P1V1 = P2V2where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.Plugging in the given values:785 mmHg x 246.2 mL = 981 mmHg x V2V2 = (785 mmHg x 246.2 mL) / 981 mmHgV2 = 196.68 mLTherefore, the volume of the gas when its pressure is increased to 981 mmHg is approximately 196.68 mL.

Answer:

c because it is a group of elements

Explaation:

The symbol [o] written above a reaction arrow means that oxygen is present in the reaction. The symbol [o] indicates that oxygen is a reactant or a product in the reaction equation. An arrow usually represents a chemical reaction in chemical equations.

In chemical equations, the [o] symbol is used to indicate oxygen as a reactant or product. Here, we must understand that Oxygen is one of the essential elements of the periodic table. It is colorless, odorless, and tasteless gas. Its atomic number is 8, and it is a member of the chalcogen group in the periodic table. The element oxygen is essential for most organisms to perform cellular respiration. It is also used extensively in the chemical industry, as well as in various other industrial processes.

Therefore, the symbol [o] is used to show the presence of oxygen in the reaction and to indicate the role of oxygen in the reaction. It is used in reaction equations to differentiate between reactants and products and to provide a clear picture of the reaction taking place.

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The moles would be 12 moles, 4 moles and 11.34 moles

When hydrogen gas (H2) reacts with oxygen gas (O2) to produce water (H2O), the balanced chemical equation is:

2H2 + O2 -> 2H2O

So,

For every 6 moles of H2, 12 moles of H2O will be produced

For every 2 moles of H2, 4 moles of H2O will be produced

For every 5.67 moles of H2, 11.34 moles of H2O will be produced.

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In general, the formation of a chemical bond lowers the potential energy of a chemical system, leading to a more stable arrangement.

Stored energy depends upon the relative position of various parts of a system.

In bond formation, atoms lose their potential energy to attain stability and heat is evolved. The bond formation is an exothermic reaction.

Atoms bond together to form compounds to attain lower energies than they possess as individual atoms.

A quantity of energy is equal to the difference between the energies of the bonded atoms and the energies of the broken atoms.

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To determine the number of moles of the gaseous organic compound, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

First, we need to convert the density to mass per volume. The density of the gas is given as 340g/L. Therefore, the mass of 1 L of the gas is 340 g.

Next, we need to use the ideal gas law to calculate the number of moles. We know that the pressure is 1.7 atm, the temperature is 45°C (which is 318 K), and the volume can be calculated using the density and the molar mass of the compound. The molar mass can be determined from the molecular formula of the compound.

Assuming the compound is a hydrocarbon, we can use an average molar mass of 28. Thus, the volume of 1 mole of the gas can be calculated as follows:

V = (molar mass/density) × 1000 ml/L = (28/340) × 1000 = 82.35 ml/mol

Using the ideal gas law equation and plugging in the given values, we get:

n = (PV) / (RT) = (1.7 atm × 82.35 ml) / (0.0821 L atm/mol K ×318 K) = 0.839 mol

Therefore, the number of moles of the gaseous organic compound is 0.839 mol

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Answer:

Gravitational force is given by:

F=G×

d

2

m×M

Distance between two masses is increased s.t. new distance is D= 5 d

New gravitational force F

1

=F

Let on of the mass is changed to m

1

so as to maintain the same gravitational force.

Answer:

D

Explanation:

F g increases by 25 times

Mothballs are made of naphtalene. The chemical structure of naphthalene is formed by two benzene rings, which gives this substance the classification of an aromatic compound.

The active principle of naphthalene is explained by a very interesting physical characteristic: sublimation, which is defined as the direct transition from a solid to a gaseous state. Once sublimated, naphthalene appears as a toxic vapor for undesirable microorganisms.

So, when a bag of mothballs is opened, they will sublime. So the molecules will not be able to come back to the bag, because they're in the gaseous state, which is too difficult for us to "pick up" the molecules of mothballs again and place them in their bag again.

It is like picking up water vapor, it is impossible.

Answer: Alternative "D"

Answer:

Natural resource professional

Explanation:

The job title that describes a person with a career in green energy is a hydroelectric technician. The correct option is c.

Green energy is renewable energy and these energies are produced by renewable resources. Renewable resources are the resources that will not be reduced, and these natural resources are present, and these energies can reproduce again by these resources.

The hydroelectric technician is the person who checks the technical problems of a hydroelectric power plant. Hydroelectricity is produced by water.

This is a renewable resource, and it does not produce any kind of pollution, So a hydroelectric technician will be a job title that describes a person with a career in green energy.

Therefore, the correct option is c., hydroelectric technician.

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The question is incomplete. Your most probably complete question is given below:

Elevator installer

sewing machine operator

hydroelectric technician

animal trainer

The rate of diffusion of butane gas at the same temperature is approximately 240 m/s.

The rate of diffusion of a gas is directly proportional to its velocity at a given temperature. Therefore, we can use the ratio of the velocities of neon and butane gases to estimate the rate of diffusion of butane gas.

The molar mass of neon is 20.18 g/mol, and the molar mass of butane is 58.12 g/mol. Since both gases are at the same temperature, their velocities are proportional to the square root of the ratio of their molar masses:

\(\sqrt{(20.18 g/mol / 58.12 g/mol) }\)≈ 0.534

Therefore, we can estimate that the rate of diffusion of butane gas is about 0.534 times the velocity of neon gas. Multiplying the velocity of neon gas by this ratio, we get:

449 m/s x 0.534 ≈ 240 m/s

So, we can estimate that the rate of diffusion of butane gas at the same temperature is approximately 240 m/s.

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Answer:

at the nuclear reactor site

Explanation:

In the United States, liquid high-level waste is stored in underground tanks pending vitrification. High-level waste is stored at the nuclear reactor site.

Such waste was created by the weapons programs of the cold war and the Manhattan project. This waste can not be vitrified as there were not enough funds for further processing.

Answer:

at the nuclear reactor site

Explanation:

The cause of potassium ions leaving the axon just after the peak of the action potential is due to the opening of voltage-gated potassium channels. These channels open in response to the depolarization that occurs during the action potential.

And also during an action potential, depolarization causes voltage-gated sodium channels to open, allowing sodium ions to flow into the axon. This influx of positive ions causes the membrane potential to rapidly rise and eventually reach a peak. At this point, voltage-gated potassium channels begin to open, allowing potassium ions to flow out of the axon. This outflow of positive ions causes the membrane potential to rapidly repolarize and eventually reach a hyperpolarized state. This rapid efflux of potassium ions is what causes them to leave the axon just after the peak of the action potential.

When the membrane potential reaches its peak, the voltage-gated potassium channels open, allowing potassium ions to flow out of the axon, leading to repolarization and the eventual return of the membrane potential to its resting state.

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The landmark in question is the Leaning Tower of Pisa, which took almost 200 years to complete.

Galileo used this tower to conduct his famous experiment, where he dropped two objects of different masses from the top of the tower to prove that the speed of descent was independent of an object's mass. At the time when Viviani asserts that the experiment took place, Galileo had not yet formulated the final version of his law of falling bodies. He had, however, formulated an earlier version which predicted that bodies of the same material falling through the same medium would fall at the same speed. This was contrary to what Aristotle had taught: that heavy objects fall faster than the lighter ones, and in direct proportion to their weight.

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The van't Hoff factor for sodium chloride in the mystery liquid can be calculated based on the freezing point depression caused by its dissolution. By comparing the freezing point depression caused by sodium chloride to the freezing point depression caused by alanine, the van't Hoff factor can be determined.

Freezing point depression is a colligative property that depends on the number of solute particles in a solution. The van't Hoff factor (i) represents the number of particles a solute molecule dissociates into in a solution.

Given that the freezing point of the solution containing alanine is higher than the freezing point of pure solvent, it indicates that alanine does not dissociate into multiple particles when dissolved. Therefore, the van't Hoff factor for alanine is 1.

However, when sodium chloride is dissolved in the same mass of the mystery liquid, the freezing point of the solution is lower than the freezing point of the pure solvent. This suggests that sodium chloride dissociates into multiple particles when dissolved.

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