n which phase(s) of matter are the atoms closely packed but still able to slide past each other?

gas
liquid
solid and gas
liquid and solid

Answer:

I have it.

Explanation:

a) The balanced equation is:

KAl(SO₄)₂·12H₂O(aq) + 3BaCl₂(s) → 2KCl(aq) + AlCl₃(aq) + 3BaSO₄(s) + 12H₂O(l)

b) The theoretical yield of barium sulfate, BaSO₄​ is 0.816 g.

c) The percent yield of barium sulfate is 125%.

a) Let's balance the equation first:

KAl(SO₄)₂·12H₂O(aq) + BaCl₂(s) → KCl(aq) + AlCl₃(aq) + BaSO₄(s) + H₂O(l)

From the balanced equation, we can see that the stoichiometric ratio between BaCl₂ and BaSO₄ is 3:3. This means that for every 3 moles of BaCl₂, we produce 3 moles of BaSO₄.

To calculate the amount of BaCl₂ needed to react with 35 mL of 0.10 M alum solution, we need to use the stoichiometry and the given concentration:

Moles of BaCl₂ = volume (in liters) × concentration

= 0.035 L × 0.10 mol/L

= 0.0035 mol

Since the stoichiometric ratio between BaCl₂ and BaSO4 is 3:3, we need the same number of moles of BaSO₄. Therefore, we need 0.0035 mol of BaCl₂.

b) The molar mass of BaSO₄ is 233.38 g/mol.

Theoretical yield of BaSO₄ = moles of BaSO₄ × molar mass

= 0.0035 mol × 233.38 g/mol

= 0.816 g

c) The percent yield is calculated by dividing the actual yield by the theoretical yield and multiplying by 100%.

Percent yield = (actual yield / theoretical yield) × 100%

= (1.02 g / 0.816 g) × 100%

= 125%

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Answer:

1,2,1,2

Explanation:

You would need only one of the CH4 but 2 of the O2 then 1 CO2 and 2 H2O on each side of the equation you now have 1 carbon, 4 hydrogen, and 4 oxygen.

Williams Field experiences short, chilly summers, lengthy, chilly, snowy, windy winters, with seasonal partial cloudiness. The average annual temperature ranges from -20°F to 32°F, with occasional exceptions when it falls below -32°F or rises beyond 37°F.

Climatic conditions at Williams Field

From November 23 to February 7 is the warm season, which lasts 2.5 months and has an average daily high temperature of more than 24°F. Williams Field experiences its warmest weather in January, with an average high temperature of 31°F and low temperature of 23°F.

The average daily high temperature during the 5.3-month cold season, which runs from April 19 to September 28, is below -2°F. With an average low of -20°F and a high of -10°F, August is the coldest month of the year at Williams Field.

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Answer:

I don't know what you mean by that I just wanted to ask you this: who do u support? Biden or Trump?

Explanation:

Thank you if you answered my question!

Answer:

D

Explanation:

plz mark brainliest answer if it helps

Answer:

C

Explanation:

Answer:

The polar water molecules exert strong cohesive forces on one another

Explanation:

The forces of cohesion refer to the strong attractive forces that molecules of a substance exert on each other.

This strong attractive force keeps the molecules of the water together and causes the water molecules to be pulled inside towards each other. We refer to this phenomenon as surface tension.

Hence, due to surface tension, water does not run off an inclined plane.

Answer:

b is correct method.

Explanation:

Given that,

Volume of tank = 64 liter

We need to find the conversion liter to quarts

Using conversion

\(1\ L=\dfrac{1\ l}{1.057\ quarts}\)

We need to find the conversion quarts to gallons

Using conversion

\(1\ quarts=\dfrac{1\ l}{4\ gallons}\)

We need to find correct method

Using conversion

\(64\ L=\dfrac{1\ L}{1.057}\times\dfrac{1\ gallon}{4\ quarts}\)

Hence, b is correct method.

The compressibility of a real gas compared to an ideal gas can be influenced by two characteristics: intermolecular forces and molecular volume. A gas with stronger intermolecular forces and larger molecular volume would be less compressible than an ideal gas, while a gas with weaker intermolecular forces and smaller molecular volume would be more compressible than an ideal gas.

(i) Less compressible than an ideal gas: Real gases with stronger intermolecular forces tend to be less compressible than ideal gases. These intermolecular forces, such as hydrogen bonding or dipole-dipole interactions, cause the gas molecules to attract each other, making it harder to compress the gas. The intermolecular forces counteract the pressure exerted on the gas, resulting in a decreased compressibility compared to an ideal gas.

(ii) More compressible than an ideal gas: Real gases with weaker intermolecular forces and smaller molecular volumes are more compressible than ideal gases. Weak intermolecular forces allow the gas molecules to move more freely, making them easier to compress. Additionally, gases with smaller molecular volumes occupy less space and can be compressed more readily compared to ideal gases.

Overall, the compressibility of a real gas compared to an ideal gas is influenced by the strength of intermolecular forces and the size of the gas molecules.

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Answer:

1809.9 Grams of Calcium Nitrate

Explanation:

Calcium Nitrate Ca(NO3)2

Molar Mass: 164.086g/mol

Given: 11.03 mol of Ca(NO3)2 x 164.086g/mol = 1809.9 Grams of Calcium Nitrate

Mole is used to measure the tiny substances such as atoms and molecules. 11.03 moles of calcium nitrate weights 1809.9 grams.

The formula to calculate the mass of the substance,

\(\bold {w = m \times n}}\)

Where,

w - mass

m - molar mass = 164.086 g/mol

n - number of moles = 11.03 moles

put the values in the formula,

\(\bold {w = 164.086 \times 11.03 }}\\\\\bold {w = 1809.9}\)

Therefore, 11.03 moles of calcium nitrate weights 1809.9 grams.

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Approximately 0.505 g of Ca (s) will be produced in the electrolytic cell of molten \(CaCl_2\) if a current of 0.452 A is passed through the cell for 1.5 hours.

To determine the amount of Ca (s) produced in an electrolytic cell of molten \(CaCl_2\) with a current of 0.452 A passed through the cell for 1.5 hours, we need to use the equation:
moles of Ca (s) = (current x time)/(F x 2)
where F is the Faraday constant (96,485 C/mol).
First, we need to calculate the total charge passed through the cell:
Q = current x time = 0.452 A x 1.5 h x 3600 s/h = 2433.6 C
Next, we need to calculate the number of moles of Ca (s) produced:
moles of Ca (s) = 2433.6 C/(96,485 C/mol x 2) = 0.0126 mol
Finally, we can calculate the mass of Ca (s) produced using its molar mass:
mass of Ca (s) = 0.0126 mol x 40.08 g/mol = 0.505 g

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If we are to express the pressure of the gas in kilopaschal then we have  303.9 kPa

We define the pressure of the gas as the force with which the gas is able to bump or hit or collide against the walls of the container in which the gas has been stored. In this case, we have been given the pressure of the gas but the unit in which the volume have been given is the unit of the atmosphere and we are asked by the question to express the pressure in the unit of kilopascal.

We know that from the use of the conversion factors;

1 atm = 101.3 kPa

3 atm = 3 atm * 101.3 kPa/ 1 atm

= 303.9 kPa

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Answer:Chewing in the mouth breaks food into smaller pieces

Explanation: all you are doing is breaking down the food in your mouth

The physical change during digestion is changing of complex food into a ball with the help of mixing with saliva and chewing by teeth.

Digestion is the process of breaking or chewing down large, molecules which are insoluble with anything of food changes into water-soluble simplex for digestion.

insoluble molecules of food into simple and small molecules which are water soluble can then be immediately absorbed by the body and Digestion as it is one of the life processes observed in all living organisms.

Therefore, physical change during digestion is changing of complex food into a ball with the help of mixing with saliva and chewing by teeth.

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Answer:

For problem 2:  1.31

For problem 3:  2.5

Explanation:

73.5/56.1=1.310

2500/1000=2.5

The Wittig reaction is a widely used organic synthesis technique that involves the reaction of a carbonyl compound such as an aldehyde or a ketone with a phosphonium salt to form an alkene.

Organic synthesis is the process of constructing organic molecules from simple, commercially available starting materials. This process involves a wide variety of reactions and techniques, such as condensation reactions, oxidation reactions, reduction reactions, cyclizations, rearrangements, and more.

The reaction is typically carried out in an ether solvent such as diethyl ether, and a base such as sodium hydroxide is added to assist with the reaction. 95% ethyl alcohol is then added to the reaction mixture to make the reaction more efficient. Iodine is also used in the reaction as a catalyst to enhance the reaction rate. The overall reaction results in the deprotonation of the phosphonium salt resulting in the formation of an alkene. (1)
Deviations from the published procedure include the use of a slightly different solvent in which to perform the reaction. Instead of using diethyl ether, which is the main solvent used in this reaction, a combination of diethyl ether and 95% ethyl alcohol is used to aid in the reaction. Additionally, the use of iodine as a catalyst is not mentioned in the original procedure, but it is commonly used to enhance the reaction rate.
In summary, the Wittig reaction involves the reaction of a carbonyl compound with a phosphonium salt in an ether solvent. Sodium hydroxide is used as a base to assist the reaction, while 95% ethyl alcohol is added to increase the reaction efficiency. Iodine is also used as a catalyst to enhance the reaction rate. Deviations from the published procedure include the use of a different solvent and the addition of iodine as a catalyst. (1)

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Answer:

oil and vinegar

the rest would mix well so you can't determine the individual components

Explanation:

Answer:

It can use a small amount of sunlight for photosynthesis

Explanation:

Seaweeds are a group of marine plants/algae that grow attached to rocks underwater. However, despite their depth underwater, they still perform photosynthesis, which is a process that requires energy from sunlight.

Seaweeds are able to perform photosynthesis underwater because they are efficient users of sunlight energy. Hence, they require only a small amount of sunlight that penetrates the ocean to perform photosynthesis.

Answer:Ag

Explanation:

The Total mass of potassium hydroxide produced is 26.76g

Potassium (K) has a mass of 18.66 g.

Potassium has a molar mass of 39.098 g/mol.

The mass molar mass of potassium (K) is 18.66 g per mole.

0.477 mol for 39.098 g/mol.

As a result, 0.477 mol of potassium (K) are involved in the water reaction.

This means that when 2 mol of K reacts with 2 mol of water, 2 mol of KOH is produced.

Therefore, 0.477 mol of KOH is produced when 0.477mol of K reacts with water.

As a result, 0.477 mol of potassium hydroxide (KOH) was generated in the given process.

KOH has a molar mass of 56.1056 g/mol.

KOH produced weighs (molar mass)×(molar number) = (0.477 mol)×(56.1056 g/mol) = 26.76g

26.76 grams of potassium hydroxide (KOH) were formed in the reaction as a result.

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Answer: A phylogenetic tree is an evolutionary tree that shows the evolutionary relationships between different groups of animals, Cladograms give a hypothetical picture of the actual evolutionary history of the organisms

Explanation: Hope this helps you out :)

Answer:

90.  

Explanation: yea and I will be back at your

Answer:

The correct answers are:

a) 180 g

b) 93.7 cm³

Explanation:

The density of a substance is the mass of the substance per unit of volume. So, it is calculated as follows:

density= mass/volume

From the data provided in the problem:

density = 0.8 g/cm³

a) Given: volume= 225 cm³

mass= density x volume = 0.8 g/cm³ x 225 cm³ = 180 g

b) Given: mass= 75.0 g

volume = mass/density = 75.0 g/(0.8 g/cm³)= 93.75 cm³≅ 93.7 cm³

Taking into account the definition of density:

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

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

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

In this case, you know that:

Replacing in the definition of density:

\(0.8 \frac{g}{cm^{3} } =\frac{mass}{225 cm^{3} } \)

Solving:

mass= 0.8 \(\frac{g}{cm^{3} } \) ×225 cm³

mass= 180 g

In summary, the mass of 225 cm³ of ethanol is 180 g.

In this case, you know that:

Replacing in the definition of density:

\(0.8 \frac{g}{cm^{3} } =\frac{75 g}{volume} \)

Solving:

0.8 \(\frac{g}{cm^{3} } \) ×volume= 75 g

volume= 75 g÷ 0.8 \(\frac{g}{cm^{3} } \)

volume= 93.75 cm³

Finally, the volume of 75.0 g of ethanol is 93.75 cm³.

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The lightest or least massive of the fundamental atomic particles are electrons. Correct answer: letter E

Electrons have a mass of 9.109 × 10^−31 kg, which is much smaller than the masses of protons (1.672 × 10^−27 kg) and neutrons (1.674 × 10^−27 kg).

The amount of energy an electron has is related to its location within an atom. Electrons can exist in discrete energy levels, and can be moved between them by providing energy in the form of light or heat. This movement of electrons between energy levels is responsible for most of the physical and chemical properties of atoms and molecules. Electrons can also form bonds between two atoms, allowing them to form molecules and compounds.

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During a phase change, the temperature does not change because the energy being absorbed or released is being used to break or form intermolecular bonds rather than increasing or decreasing the kinetic energy of the particles.

Phase change refers to the process of changing from one state of matter to another, such as from a solid to a liquid or from a gas to a liquid. These changes take place as a result of changes in temperature or pressure. The temperature at which a phase change occurs is known as the substance's melting point or boiling point. When a substance is heated, the kinetic energy of its particles increases, resulting in an increase in temperature. However, during a phase change, the temperature of the substance does not change.

Rather than increasing or decreasing the kinetic energy of the particles, the energy absorbed or released is being used to break or form intermolecular bonds. These intermolecular bonds exist between particles in a given phase and are responsible for holding them together. When a substance undergoes a phase change, these bonds must be broken or formed. This takes energy, and the amount of energy required is substantial enough to prevent a temperature change from occurring.

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Option B is supported by the mass of 2.75 104 moles of NaOH, which is 1.1 102 g.

To find the mass of \(2.75 x 10^-^4\) moles of NaOH, we need to use the formula:
mass = moles x molar mass

The molar mass of \(NaOH\) is 40.00 g/mol (22.99 g/mol for Na + 16.00 g/mol for O + 1.01 g/mol for H).
So, the mass of \(NaOH\) is:

mass =\(2.75 x 10^-^4\) mol x 40.00 g/mol
mass = 0.011 g

Converting this to scientific notation, we get:
mass \(= 1.1 x 10^-^2 g\)

Therefore, the answer is option b)\(1.10 x 10^-^2 g NaOH.\)

To find the mass of \(NaOH\), we need to use the formula:
mass = moles × molar mass

The molar mass of \(NaOH\) (sodium hydroxide) is approximately 40 g/mol (23 g/mol for Na, 16 g/mol for O, and 1 g/mol for H).

Given, moles of \(NaOH\) = 2.75 × 10⁻⁴
Now, let's calculate the mass:
mass = (2.75 × 10⁻⁴ moles) × (40 g/mol) = 1.1 × 10⁻² g

So, the mass of 2.75 × 10⁻⁴ moles of \(NaOH\) is 1.1 × 10⁻² g, which corresponds to option B.

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Answer:

wind

Explanation:

it would be naturally caused by the pressure

Answer:

temperature or pressure differences

Explanation:

Answer:

0.01.

Explanation:

This is because, if you divided one rectangle by ten, it will give 0.1

That is 1/10 = 0.1

If each of the smaller rectangles is divided by 10.

It will be 0.1/10 which will be equal to 0.01.

The rectangles will be 0.01 each.

Answer:

1.  electrons

2. From "Y" to "X"

Explanation:

1. Electrons move between the rod since the electrons are the only charge carriers which are free to move.

2. The particles move from from "Y" to "X"  since the electrons are the only charge carriers which are free to move. The positive charge on rod x is due to a deficit of electrons while the negative charge on rod Y is due to the excess of electrons. When the rods come together, the electrons move from "Y" to "X" since the electrons are the only charge carriers which are free to move.

The maximum wavelength of light capable of dissosciating i-i bond in one molecule of iodine is 0.77m.

The energy needed to break a bond and create two atomic or molecular fragments, each containing one of the original shared pair of electrons, is known as the bond dissociation energy.

The energy required to break one i-i bond = bond energy per mol/ avagudro's number.

= 119.255x 10^3/ 6.023 x 10^23 J

Let the wavelength of the photon required to break one i-i bond be lambda .

Lambda = hc/E = 6.6x10^-34x3x10^8 x 6.023 x 10^23/ 153 x 10^3

=119.2554 x 10^-3/ 153 x10^3= 0.77 m

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