Calculate the mass of NaCl that must be added to completely react with 1.50 L of a 0.150 M AgNO3 solution according to the reaction below: NaCl (aq) + AgNO3 (aq) → AgCl (s) + NaNO3 (aq)

Answer:

Explanation: Liquid Chromatography  

I'm sorry if i'm wrong

In her experiment, she will have to deal with the following elements Amount of metal corrosion⇒  Airborne Salt Concentration⇒  Air Temperature.

Uniform corrosion, pitting, crevice corrosion, filiform corrosion, galvanic corrosion, environmental cracking, and fretting corrosion are just a few of the various types of corrosion that may be seen with the unaided eye. Let's examine how these types of corrosion develop and how carbon steel can be harmed by them.

When a metal reacts with something else, such oxygen, hydrogen, an electrical current, or even dirt and germs, it corrodes. When metals like steel are subjected to excessive strain, which causes the substance to split, corrosion can also occur.

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The complete question is -

Select the correct answer from each drop-down menu.

Madison lives near the ocean. She's formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. If Madison plans to test this hypothesis, she will have to deal with the following variables in her experiment:

Dependent variable: [AIR HUMIDITY/AIR TEMPERATURE/AMOUNT OF METAL CORROSION]

Independent variable: [AIRBORNE SALT CONCENTRATIONS/VOLUME OF OCEAN WATER/OCEAN WATER TEMPERATURE]

One possible confounding variable: [AIR TEMPERATURE/AIRBORNE SALT CONCENTRATIONS/COLOR OR NEARBY OCEAN WATERS]

The molarity of the ammonium nitrate solution is 2281 M.

Molarity is defined as the number of moles of solute per liter of solution. It is also known as molar concentration of the solution and is used to calculate amount of substances in the solution.

Molarity = n/M

n = m / MW

m = 2 lbs = 1000/2.2 = 909 g

V = 53 x 3.79/1 = 200.9

MW = 80.04 g

M = m/Mw / V

M = 909/80.04 /200.9

M = 2281 M

Thus, the molarity of the ammonium nitrate solution is 2281 M.

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Answer:

Pollen

Explanation:

bc i take notes and also my sister studies bio

PLZ GIMME BRAINLIEST

Answer:

correct

Explanation:

The fact that an airplane flying due east from an airport will eventually return to its starting point indicates that the Earth is a sphere due to the curvature of the Earth's surface.

How can an airplane flying due east provide evidence for the shape of the Earth?

By continuing to fly east, and with enough fuel, the airplane will eventually reach the same airport it started from. The longest eastward journey would occur from an airport located at one of the Earth's poles. Very short journeys would occur near the equator.

The fact that the airplane returns to its starting point indicates that the Earth is a sphere, as it would not be possible on a flat plane. This phenomenon is due to the curvature of the Earth's surface, which causes the plane's trajectory to follow a circular path along the Earth's surface.

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Answer:

The waters' temp increased

Explanation:

The temperature of the water in the swimming pool has increased due to the heat from the Sun. As a result, the particles in the water are moving faster and have a higher kinetic energy than in the morning.

Approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M.

To determine the mass of glucose (C6H12O6) required to prepare a 0.215 M solution in 5000 mL, we need to use the formula:

Molarity (M) = moles of solute / volume of solution (in liters)

First, let's convert the volume of the solution from milliliters (mL) to liters (L):

5000 mL = 5000/1000 = 5 L

Now, we can rearrange the formula to solve for moles of solute:

moles of solute = Molarity (M) x volume of solution (L)

moles of solute = 0.215 M x 5 Lmoles of solute = 1.075 mol

Since glucose (C6H12O6) has a molar mass of approximately 180.16 g/mol, we can calculate the mass of glucose using the equation:

mass of solute = moles of solute x molar mass of solute

mass of glucose = 1.075 mol x 180.16 g/mol

mass of glucose = 194.0 g (rounded to three significant figures)

Therefore, approximately 194.0 grams of glucose (C6H12O6) would be required to prepare a 5000 mL solution with a concentration of 0.215 M. It's important to note that the molar mass of glucose used in this calculation may vary slightly depending on the level of precision required.

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It's important to note that equilibrium is a dynamic state, meaning that while the conditions mentioned above are true, there may still be continuous microscopic fluctuations or changes within the system, but the macroscopic properties remain constant.

What is Equilibrium?

Equilibrium refers to a state of balance or stability in a system where there is no net change or overall tendency for change to occur. In various scientific disciplines, including physics, chemistry, and biology, equilibrium is a fundamental concept that describes the balance between opposing forces or processes.

Balance of forces: The net force acting on the system is zero. This means that the forces acting in opposite directions are balanced, and there is no overall acceleration of the system.

Balance of torques: The net torque (or moment) acting on the system is zero. This means that the torques acting in opposite directions are balanced, and there is no rotational acceleration of the system.

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The plasma membrane is semipermeable because proteins in the membrane act like gates to control entrance and exit of molecules.

Because the plasma membrane is semipermeable, only some compounds can pass through without being blocked by others. Proteins incorporated into the membrane play a major role in facilitating this selectivity. These proteins serve as gatekeepers and control how chemicals are transported through the membrane. Many protein types, including carrier proteins and channel proteins, aid in the movement of particular molecules by generating channels or changing their shape.

Therefore, the correct option is B.

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The sun sending out electromagnetic waves is best describes the source of radiation heat.

Radiation heat is the form of electromagnetic waves.

Radiation heat, commonly referred to as thermal radiation, is the electromagnetic radiation that defines how photons exchange heat. The technique of heat transfer known as radiant heat does not require a medium to be propagated in.

Two molecules colliding with each other produce kinetic energy, moving objects have kinetic energy. Radiation heat is thermal energy. Sun directly sends thermal radiation through electromagnetic waves.

Hence , The sun sends out electromagnetic waves directly is best describes the source of radiation heat.

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Answer:

\(pOH=11.2\)

Explanation:

Hello,

In this case, by knowing that the pOH is defined in terms of the concentration of OH⁻ as shown below:

\(pOH=-log([OH^-])\)

We directly compute with the given concentration:

\(pOH=-log(6.5x10^{-12})\\\\pOH=11.2\)

Moreover, fur such pOH, the pH will be:

\(pH=14-11.2=2.8\)

Which means that such solution is an acid solution.

Best regards.

Answer:

11.2

Explanation:

A synthetic ingredient is a substance that has been synthesized in a lab using different chemical procedures. Its goal is to mimic a natural chemical to duplicate its structure and, consequently, its fragrance.

In most cases, it refers to a naturally occurring substance, like hyaluronic acid, which was formerly extracted from animals and has now been molecularly copied in a laboratory to provide the same results. Not everything that is manufactured or chemical is inherently harmful to you. Although not all synthetic cosmetic components are the same, some have been proven to be toxic, accumulate in the body over time, and have been associated with cancer as well as irritations of the skin and mucous membranes.

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In both plants and animals, the process of cellular respiration may be broken down into the following steps: Oxygen + carbon dioxide.

When plant cells undergo cellular respiration, oxygen is taken in through the plant's leaves from the surrounding atmosphere, and carbon dioxide is exhaled back into the atmosphere as a byproduct of the process. In contrast, when animal cells undergo cellular respiration, oxygen is taken in through the lungs, and carbon dioxide is exhaled through the lungs.

Therefore, a quick review, throughout the process of cellular respiration, plants and animals trade oxygen and carbon dioxide with one another.

Therefore, we may draw the following conclusion: Oxygen + carbon dioxide is a shorthand for the process of cellular respiration in plants and animals.

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Answer:

hexane

I hope it's helps you

0.0205 moles of water were lost if the amount of water lost was 0.369 grams. The given answer is in three significant figures with including zero before the decimal.

To find the number of moles of water lost, we need to know the molar mass of water (H2O).

Molar mass is the sum of the atomic masses of all the atoms present in a molecule.

Since the molecule of water contains two atoms of hydrogen and one atom of oxygen, the molar mass of water is given by the sum of the atomic masses of two hydrogen atoms and one oxygen atom, which is: 2(1.008 g/mol) + 1(15.999 g/mol) = 18.015 g/mol

Therefore, one mole of water has a mass of 18.015 g.

The number of moles of water lost can be calculated using the following formula: Number of moles = Mass of substance / Molar mass of substance

Substituting the given values, we get: Number of moles = 0.369 g / 18.015 g/mol = 0.0205 mol

Thus, 0.0205 moles of water were lost if the amount of water lost was 0.369 grams.

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Answer:

a

Explanation:

Density is a physical property.

From the stoichiometry of the reaction, the volume of the steam produced is 82.9 L

The term combustion is the term that is used to describe the kind of reaction that occurs when a substance is being burnt in oxygen. It is an oxidation reaction and the octane is burnt to produce carbon dioxide and steam.

We can try to write down the equation of the reaction as follows;

2C8H18(g) + 25O2(g) ------> 16CO2(g) + 18H2O(g)

Now 1 mole of octane gas occupies 22.4 L

x moles of octane gas occupies 9.1 L

x = 9.1 L  *  1 mole /22.4 L

x = 0.41 moles

Now;

2 mole of octane gas produces 18 moles of steam

0.41 moles of octane gas produces  0.41 moles  * 18 moles/2 mole

= 3.7 moles

1 mole of steam occupies 22.4 L

3.7 moles of steam occupies 3.7 moles *  22.4 L/1 mole

= 82.9 L

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Answer:

Explanation:

1. Identify the elements present in the compound. The compound N2O3 contains two elements: nitrogen (N) and oxygen (O).

2. Determine the type of compound. N2O3 is an ionic compound, as it contains two different elements.

3. Write out the full name of the compound. The full name of the compound is dinitrogen trioxide.

4. Identify the subscripts. The subscripts indicate the number of atoms of each element in the compound. In this case, there are two nitrogen atoms (N2) and three oxygen atoms (O3).

5. Assign the proper name. The proper name for N2O3 is dinitrogen trioxide.

Cloud and dew both form when water vapor condenses. The last option.

Condensation is a phase-change process involving a change from the vapor phase to the liquid phase. It is the opposite of evaporation which involves a phase change from liquid to vapor.

Clouds are formed when microscopic water vapors present in the upper stratosphere condense to form visible water vapor or ice crystals. Dews, similarly, are formed when water vapors condense into visible liquids.

In other words, both clouds and dews are formed by the condensation of water vapors.

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Answer:

Explanation:

All of above except carbon dioxide

The compound that is held together by ionic bonds are CaCl₂,  NaCl, sodium bromide, and FeBr₃. The correct options are A, C, D, and F.

Ionic bonds are electrovalent bonds. These bonds are formed when two or more atoms lose electrons or gain electrons to form an ion. Ions are opposite charges that attract each other. Ionic bonds are formed in both metals and non-metals.

CaCl₂, calcium chloride, is formed between metals and non-metals. Some more examples are NaOH – Sodium Hydroxide, NaHCO₃—Sodium Hydrogen Carbonate, etc.

An example is NaCl, is sodium has 11 atomic numbers. Chloride has 6 electrons in its outermost shell. They will share electrons with each other to make the noble gas configuration.

Thus, the correct options are A. CaCl₂, C. NaCl, D, sodium bromide, and F. FeBr₃.

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Answer:

3.7 x 10²¹ O₂ molecules

Explanation:

2KClO₃ => 2KCl + 3O₂

given 0.500g KClO₃ => 0.500g/122.55g/mol = 0.0041 mole KClO₃

0.0041 mole KClO₃ => 3/2(0.0041) mole O₂ = 0.0061 mole O₂

0.0061 mole O₂ = 0.0061 mole O₂ x 6.02 x 10²³ molecules O₂/mole O₂

= 3.7 x 10²¹ molecules O₂

Answer:

[Ar]3d4 is the ground-state electron configuration for the Mn4 ion

but i don't know whether it is paramagnetic or daimagnetic

These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Option B)

A colloid is a type of mixture in which particles are dispersed throughout a medium, creating a homogeneous appearance. Unlike solutions, where the particles are completely dissolved, and suspensions, where the particles settle out, colloids have particles that are larger than those in solutions but smaller than those in suspensions. One characteristic of colloids is that they can scatter light due to the size of the particles. This scattering of light is known as the Tyndall effect. Examples of colloids include milk, fog, and aerosol sprays. These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Therefore option B) is correct

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Note Complete Question

which is an example of a colloid?

a mixture that settles out,

b mixture that scatters light,

c mixture that is separated by filtration,  

d salt and water mixture?

Answer:

answer = -0.95

Explanation:

Answer:

atoms move faster

Explanation:

Space is produced when substances are heated. The atoms became extremely energetic and began to move much quicker than usual. When this happens, energy is released in the form of heat, light, and so on. As a result, kinetic energy rises and atoms collide more frequently.

The assumption that accounts for the great compressibility of gases compared to liquids and solids is assumption 1: Gases are made up of molecules which are relatively far apart. Option A)

The assumption that accounts for the great compressibility of gases compared to liquids and solids is assumption 1: Gases are made up of molecules which are relatively far apart.

In gases, the molecules are widely spaced and have significant gaps between them. This allows gases to be easily compressed under pressure. When external pressure is applied to a gas, the molecules can be brought closer together, reducing the volume occupied by the gas. The gaps between the molecules provide room for compression, allowing gases to occupy a smaller volume.

In contrast, liquids and solids have molecules or particles that are closely packed together. The intermolecular forces in liquids and solids are stronger, limiting their compressibility. The molecules or particles are already in close proximity, leaving little room for further compression.

Therefore, the assumption that gases consist of molecules that are relatively far apart accounts for their greater compressibility compared to liquids and solids. Hence Option A) is correct.

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Answer:

Argon would be the correct choice.

Explanation:

Silicon has a total of 14 protons. If 4 protons would be added, you would now have argon, the 18th element.

Answer:

The answer is 5.