Substances can be the same if one has more of the same type of repeating group of atoms

Answer:

Bond between N and Br is non polar bond

Answer:

0.342 moles

145 moles

0.0239 moles

0.498 moles

Explanation:

To solve this you only need to follow this rule:

N = n x Na. For solving this questions, you just need to divide this values for Avogadro's Coasting, and it's done. Hope it helped!

Answer:

D: -1

Explanation:

18 protons so +18

19 electrons -19

neutrons dont count there neutral

-19+18= -1

Answer: D: -1

Explanation: All protons have a +1 charge, neutrons are neutral, and electron have a -1 charge. Therefore it can be concluded that if the atom has 18 protons which all have +1 charge and 19 electrons which all have -1 charge, then the atom will have a -1 charge since 18-19=-1

There are approximately 12.7 grams of phosphorus in a 50-gram sample of aluminum phosphate.

To determine the number of grams of phosphorus in a 50-gram sample of aluminum phosphate, we need to know the molar mass and the chemical formula of aluminum phosphate.

The chemical formula for aluminum phosphate is AlPO4. It indicates that each molecule of aluminum phosphate contains one aluminum atom (Al), one phosphorus atom (P), and four oxygen atoms (O).

To calculate the molar mass of aluminum phosphate, we can add up the atomic masses of its constituent elements based on their stoichiometric ratios:

Molar mass of AlPO4 = (molar mass of Al) + (molar mass of P) + (4 * molar mass of O)

Using the periodic table, we can find the atomic masses of the elements:

Molar mass of Al = 26.98 g/mol

Molar mass of P = 30.97 g/mol

Molar mass of O = 16.00 g/mol

Now, let's calculate the molar mass of aluminum phosphate:

Molar mass of AlPO4 = (26.98 g/mol) + (30.97 g/mol) + (4 * 16.00 g/mol)

= 121.95 g/mol

The molar mass of aluminum phosphate is 121.95 g/mol.

To determine the number of grams of phosphorus in a 50-gram sample of aluminum phosphate, we need to calculate the mass fraction of phosphorus in the compound. The mass fraction is the ratio of the molar mass of phosphorus to the molar mass of aluminum phosphate.

Mass fraction of phosphorus = (molar mass of P) / (molar mass of AlPO4)

= (30.97 g/mol) / (121.95 g/mol)

≈ 0.254

Multiplying the mass fraction by the mass of the sample gives us the grams of phosphorus:

Grams of phosphorus = (mass fraction of phosphorus) * (mass of the sample)

= 0.254 * 50 g

≈ 12.7 g

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1. Fluid compressibility (C): Fluid compressibility refers to the measure of how much a fluid's volume changes in response to a change in pressure.

2. Solution-gas/liquid ratio (SGLR): The solution-gas/liquid ratio represents the volume of gas dissolved in a given volume of liquid at a specific pressure and temperature.

3. Fluid formation volume factor (FVF): The fluid formation volume factor represents the ratio of the volume of a fluid at reservoir conditions (pressure and temperature) to its volume at surface conditions.

4. Fluid densities (ρ): Fluid densities refer to the mass per unit volume of a fluid.

5. Fluid viscosities (μ): Fluid viscosities represent the measure of a fluid's resistance to flow.

1.  Equation: C = -1/V * dV/dP

  Symbol: C

  Unit: 1/Pascal (Pa^-1)

  Correlation: The compressibility of fluids can vary depending on the fluid type. For ideal gases, the compressibility is inversely proportional to pressure.

2.Equation: SGLR = V_gas / V_liquid

  Symbol: SGLR

  Unit: Volumetric ratio (e.g., scf/bbl)

  Correlation: The solution-gas/liquid ratio is influenced by the pressure and temperature conditions, as well as the composition of the fluid.

3. Equation: FVF = V_reservoir / V_surface

  Symbol: FVF

  Unit: Volumetric ratio (e.g., bbl/STB)

  Correlation: The fluid formation volume factor depends on the composition and properties of the fluid, as well as the reservoir conditions.

4. Equation: ρ = m / V

  Symbol: ρ

  Unit: Mass per unit volume (e.g., kg/m^3)

  Correlation: Fluid densities can vary depending on the type and composition of the fluid. For example, water has a density of approximately 1000 kg/m^3.

5. Equation: No single equation; viscosity is measured experimentally using viscometers.

  Symbol: μ

  Unit: Pascal-second (Pa·s) or centipoise (cP)

  Correlation: The viscosity of a fluid is influenced by temperature and pressure. Different fluids exhibit different viscosities, ranging from low-viscosity fluids like water to high-viscosity fluids like heavy oil.

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Answer:

164.088 g/mol

Explanation: hope this helps

Answer:

Calcium nitrate

Explanation:

164.088 g/mol

give me the brainliest plss

Answer:

(a) The inverse relationship of Boyle's law.

Explanation:

A Cartesian diver is used in scientific experiments to demonstrate the certain principles in science such as;

i. The principle of floatation or the Archimedes' principle.

ii. The implication of the ideal gas law as seen in, for example, Boyle's law and pressure law,

iii. Pascal's principle.

The diver demonstrates that given a large soft drink bottle containing water and a medicine dropper at its top, squeezing the bottle pushes the dropper down to the bottom. When the squeezing stops, the dropper comes back to the top again.

Now using this to demonstrate Boyle's law (which shows the relationship between pressure and volume where increase in one results in the decrease in the other), when the bottle is squeezed (which means pressure is increased on the bottle), the water is forced into the medicine dropper thereby decreasing the volume of air in the dropper. Removing pressure on the bottle produces an opposite effect.

An iceberg has a volume of 7670 cubic feet. The mass of the ice (in kg) composing the iceberg is 0.0002483 kg

The volume of iceberg = 7670 cubic feet.

Density of ice = 0.917 g/cm\(^{3}\)

so, Density is given by,

Density = mass / volume

density of ice =  (0.917 /1000) kg/cm\(^{3}\)

1 cm\(^{3}\) = 0.00003531 ft\(^{3}\)

therefore,

0.000917 kg/cm\(^{3}\) = (0.000917 × 0.00003531 ) kg/ft\(^{3}\)

                            = 0.0000000324 kg/ft\(^{3}\)

now,putting the values in formula , we get,

Density = mass / volume

mass = density × volume

         = (0.0000000324 × 7670 ) kg

         = 0.0002483 kg

Hence,An iceberg has a volume of 7670 cubic feet. The mass of the ice (in kg) composing the iceberg is 0.0002483 kg.

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Answer:

Solids: definite shape and definite volume (highest density)

Liquid: indefinite shape and definite volume (glide past each other)

Gas: indefinite shape and indefinite volume (lowest density)

Explanation:

look at the answer

Answer:

En el grupo de los no metales se incluyen los halógenos​ (flúor, cloro, bromo, yodo, astato y téneso), que tienen 7 electrones en su última capa de valencia y los gases nobles (helio, neón, argón, kriptón, xenón, radón), que tienen 8 electrones en su última capa (excepto el helio, que tiene 2).

Explanation:

halógenos

Answer:

1,4

Explanation:

Answer:

When endothermic reaction takes place, the system gains heat from the surroundings and so the temperature of the surroundings decreases ie. it gets colder

Explanation:

A chemical reaction is exothermic if heat is released by the system into the surroundings.

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Moisturizing conditioners is used for hair that has been damaged by strong alkaline shampoos, chemicals or heat styling.

To enhance the feel, texture, look, and manageability of hair, hair conditioner is a cosmetic product for hair care. Its major objective is to lessen friction between hair strands so that brushing or combing may be done more easily and without risking scalp harm.

Electrostatic interactions allow the conditioner's components, particularly positively charged quaternary ammonium species like behentrimonium chloride or polymers referred to as Polyquaternium-XX, where XX is a random number, to adhere to the hair. Once linked, these substances have a variety of outcomes. Their extensive hydrocarbon backbone contributes to lubricating each hair follicle's surface, which lessens friction and makes combing easier.

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that the original piece of wood was made approximately 17,190 years ago.

that the half-life of c-14 is 5730 years, which means that after this amount of time, half of the original amount of c-14 in a sample will have decayed. In this case, scientists determined that only 1/8th of the of c-14 remained, which is equivalent to 3 half-lives of c-14 (since 1/2 x 1/2 x 1/2 = 1/8). Therefore, we can calculate the age of the wood by multiplying the half-life by the number of half-lives, which gives us 5730 x 3 = 17,190 years.

based on the given information about the amount of c-14 remaining in a sample of wood, we can estimate that the original piece of wood was made approximately 17,190 years ago.


1. Given that 12.5% or 1/8th of the original amount of C-14 remains, this indicates that the sample has gone through three half-lives.
2. The half-life of C-14 is 5730 years.
3. To calculate the total elapsed time, multiply the number of half-lives (3) by the half-life of C-14 (5730 years): 3 * 5730 = 17,190 years.

Based on the given information, the original piece of wood was made about 17,190 years ago.

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Foliar burn is a plant condition caused by the application of fertilizer in excess. It appears as a leaf-tip or marginal burn, with the burning and dying of plant tissues, and the leaves will also display the formation of necrotic tissue and spots.

This happens because of the process by which particles of fertilizer can cause foliar burn.Foliar burn occurs when a fertilizer solution is applied to the plant’s foliage, and the solution stays on the leaves for too long. The particles of fertilizer can create an osmotic pressure difference across the leaf membrane, which leads to an imbalance of water between the leaf cells and the external environment.

This imbalance causes the plant cells to leak out, leading to cell death. As the plant cells die, the leaves start to turn brown and become brittle. In some cases, the leaves will fall off entirely.A long answer to your question can be: The process by which particles of fertilizer can cause foliar burn is the imbalanced water between the leaf cells and the external environment.

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When the air molecules inside the tire cooled down, they moved slower, exerting less pressure on the inside walls of the tires. This is why Amy observed a lower reading of 29 PSI during the night compared to the normal reading of 35 PSI on a hot day.

The correct statement that explains what Amy observed is:

d. The air molecules cooled inside the tire causing them to move slower, exerting less pressure on the inside walls of the tires in the evening.

This observation can be explained by the ideal gas law and the relationship between temperature and pressure. According to the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.

When the temperature decreases, as it did during the night, the kinetic energy of the air molecules decreases. As a result, the molecules move slower, leading to fewer collisions with the walls of the tire. Since pressure is caused by the force exerted by gas molecules colliding with the walls of the container, the decrease in molecular motion leads to a decrease in pressure.

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Answer:

The answer is

Explanation:

The percentage error of the density can be found by using the formula

\(Percentage \: \: error(\%) = \frac{error}{actual \: \: number} \times 100 \\ \)

From the question

actual density = 1.59 g/cm³

error = 1.68 - 1.59 = 0.09

The percentage error is

\(P(\%) = \frac{0.09}{1.59} \times 100\% \\ = 5.66037735...\)

We have the final answer as

Hope this helps you

The oil that provides the most monounsaturated fatty acids is olive oil. Monounsaturated fatty acids are a type of healthy fat that can help lower cholesterol levels and reduce the risk of heart disease. Olive oil is particularly rich in these fatty acids, making it a great choice for cooking and dressing salads.

While fish oil, coconut oil, flaxseed oil, and corn oil all contain some monounsaturated fatty acids, they are not as high in this type of fat as olive oil. Fish oil is a good source of omega-3 fatty acids, while coconut oil is high in saturated fat. Flaxseed oil is a good source of both omega-3 and omega-6 fatty acids, and corn oil is a good source of polyunsaturated fatty acids.

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Answer:

When solid oxalic acid dissolved in water, it dissociates ,  H+ - ions is formed, so acidic properties can be observed.

Explanation:

When solid oxalic acid dissolved in water, it dissociates ,  H+ - ions is formed, so acidic properties can be observed.

C2H2O4 ----> \(H^{+}\) + \(C_{2}HO_{4}^{-}\)

\(C_{2}HO_{4}^{-} ----> H^{+} + C_{2}O_{4}^{2-}\)

When oxalic acid is solid, there are no free moving H+ - ions , so acidic properties can not be observed.

Glucose is the simplest sugar and carbohydrate that provides energy. The simplified model of glucose (C₆H₁₂O₆) shows carbon, hydrogen, and oxygen atoms linked together.

Glucose is an example of a carbohydrate macromolecule that is further classified as a monosaccharide. They are crystalline and fundamental units of carbohydrates.

The molecular formula of glucose is C₆H₁₂O₆ and the mass is 180.156 g/mol. It is an aldohexose that contains an aldehydic functional group. In its structure, there are six oxygen atoms, six carbon atoms, and twelve hydrogen atoms.

Therefore, the glucose molecule is composed of C, H, and O.

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Answer:

305.88 g

Explanation:

4 Al + 3 O₂ → 2 Al₂O₃

First, we convert 6 moles of aluminum (Al) into moles of aluminum oxide (Al₂O₃), using the stoichiometric coefficients:

6 mol Al * \(\frac{2molAl_2O_3}{4molAl}\) = 3 mol Al₂O₃

Finally we convert 3 moles of aluminum oxide into grams, using its molar mass:

3 mol Al₂O₃ * 101.96 g/mol = 305.88 g

Answer:

4.05 × 10²² atoms

Explanation:

Step 1: Given data

Mass of nickel: 3.95 g

Step 2: Calculate the moles corresponding to 3.95 g of nickel

The molar mass of nickel is 58.69 g/mol.

3.95 g × (1 mol/58.69 g) = 0.0673 mol

Step 3: Calculate the atoms in 0.0673 moles of nickel

We will use Avogadro's number: there are 6.02 × 10²³ atoms of nickel in 1 mole of atoms of nickel.

0.0673 mol × (6.02 × 10²³ atoms/1 mol) = 4.05 × 10²² atoms

Answer:

Continental Drift by Alfred Wegener

Earth's landmasses are in constant motion due to plate tectonics.

Hope this helps :)

41.7% is the percentage by mass of hydrogen (H) in lithium hydroxide (LiOH). The solution mixture is frequently defined in terms of mass percentage.

The mass percent might be used to denote a degree. Furthermore, it defines the element during a specific mixing. The solution mixture is frequently defined in terms of mass percentage. It represents the amount of solute contained in a mass m of solution.

The quantity of solutes can be stated in terms of mass or moles. We will study the percent by mass formula with numerous solved numerical examples in this post.

Mass percent = (component’s mass ÷ total mass) x 100%

                      = (1/ 23.95)x 100%

                     = 41.7%

Therefore, 41.7% is the percentage by mass of hydrogen (H) in lithium hydroxide (LiOH).

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Calculating this equation will give us the average translational kinetic energy of one molecule in the given ideal gas at 97.3°C.

To determine the average translational kinetic energy of a molecule in an ideal gas, we can use the equation:

E = (3/2) * k * T

Where:

E is the average translational kinetic energy

k is the Boltzmann constant (k = 1.380649 × 10^−23 J/K)

T is the temperature in Kelvin

First, let's convert the temperature from Celsius to Kelvin by adding 273.15:

T = 97.3°C + 273.15 = 370.45 K

Now we can calculate the average translational kinetic energy:

E = (3/2) * k * T

= (3/2) * (1.380649 × 10^−23 J/K) * (370.45 K)

T = 97.3°C

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Answer:

A. Substance #2 because it has a higher melting point, so the molecules have a strong attraction to one another.

Explanation:

An intermolecular force is like an attraction, a weak intermolecular force means that the atoms separate faster, therefore atoms in a  strong intermolecular force take longer to separate.

Although we don't know the substance we see 2 different melting points:

10 degrees Celsius and 100 degrees Celsius

a higher melting point means that it takes longer for the atoms in that substance to separate therefore that means that they have a strong attraction  which makes statement A correct

hope that helps :)

Answer:

I think C. Hope this Helps!

Explanation:

Answer:

See the answer below

Explanation:

A microscope is a laboratory tool that is used to magnify the image of objects This allowed scientists to study tiny organisms that cannot be seen with an ordinary eye. We cannot see some organisms using our naked eyes, such as bacteria, protists, viruses, and microscopic fungi. The main parts of a microscope that magnifies are the ocular and the objective lenses. the lamp serves as the light source. In order to see the specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the coarse and the fine adjustment knobs. other parts of the microscope such as the base and the arm serve as primary support for the device.

The microscope is primarily designed to magnify the image of objects and, thus, enables one to see objects that cannot ordinarily be seen with the naked eyes. It magnifies objects using a system of lenses in the ocular and the eyepiece. Microscopic organisms such as protists, bacteria, viruses, microscopic fungi and algae can be seen using the microscope. Slides of objects are prepared and placed on the stage of the microscope and the coarse/fine adjustment knobs used to adjust the stage in order to bring the image on the slide into focus through the ocular. A lamp at the base provides the light source for the light microscope while other parts such as the arm, the head, and the base provide supportive functions for the microscope,

The description, features and function of a microscope can be found explained below.

MICROSCOPE:

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The number of moles of CO₂ gas present in the sample are 0.60 moles.

The gas is CO₂

Given,

P = 0.671 atm

Temperature = 300 K

Volume = 21.3 L

By ideal gas law equation,

PV = nRT

Where,

P is pressure of the gas

V is volume of the gas

T is temperature of the gas

R is the universal gas constant

Substituting the values,

PV = nRT

0.671 atm × 21.3 L = n × 0.0821 × 300

⇒ n = (0.671 atm × 21.3 L) / (0.0821 × 300)

⇒ n = 14.29 / 24.63

⇒ n = 0.60 moles

Hence, the number of the moles of CO₂ is 0.60 moles.

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