used by rutherford in his experiment; made of two protons and two neutrons

The electronic configuration in an excited state of Galium is [Ar]3d104s14p2.

The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration, also known as electronic structure and electron configuration. The number of electrons within each orbital is denoted by a superscript, and the occupied

Orbitals are listed in order of filling to represent the electronic configuration for an atom according to the quantum-mechanical model. The electrical configuration of sodium in this notation would correspond to 1s22s22p63s1, distributed as 2-8-1. The electronic configuration in an excited state of Galium is [Ar]3d104s14p2.

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Answer:

1.84x10^-4 moles of cyanocobalamin

Explanation:

The challenge here is to find the molar mass of cyanocobalamin.  The molecule has the chemical formula of:

C63H88CoN14O14P

Molar mass is calculated by adding the atomic masses of each atom in the compound.  (e.g., 63 carbons at 12 each, etc.).  The molar mass is found to be 1355.4 g/mole.

1355.4 grams of cyanocobalamin will contain 1 mole, or 6.02x10^23 molecules of cyanocobalamin.  But we only have 250 mg, or 0.250 grams of the compound.  Use the molar mass as a conversion factor by dividing the mass by the molar mass:

(0.250 g)/(1355.4 g/mole) = 1.84x10^-4 moles

The grams cancel and the moles moves to the top, leaving only moles cyanocobalamin.  While 1.84x10^-4 moles of cyanocobalamin doesn't sound like much, it represents:

(1.84x10^-4 moles)*(6.02x10^23 molecules/mole) = 1.11x10^20 molecules of cyanocobalamin

Answer:

Energy

Explanation:

As waves move from one place to another, they carry energy. Generally, the medium itself doesn't move much as it is the disturbance that is being transmitted

Answer:

energy because a wave isnt like a physical thing so it isnt gonna have matter or particles or molecules its just a movement of energy like a sound wave has no matter so it doesnt have particles and stuff

Explanation:

i know i sound very scientific XD

266.63g of Fe2O3 would be required to make 187 g Fe in accordance with the following equation: Fe₂O3 + 3CO → 2Fe + 3CO₂.

The mass of a product or reactant can be calculated using stoichiometry as follows:

According to this question, iron oxide reacts with carbon monoxide as follows:

Fe₂O3 + 3CO → 2Fe + 3CO₂

1 mole of Fe2O3 produces 2 moles of Fe

Moles of Fe = 187/56 = 3.34mol

3.34/2 = 1.67 moles of Fe2O3 will be required to produce 3.34 moles of Fe.

mass of Fe2O3 = 1.67 mol × 159.69 g/mol = 266.63g

Therefore, 266.63g of Fe2O3 would be required to make 187 g Fe in accordance with the following equation: Fe₂O3 + 3CO → 2Fe + 3CO₂.

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As the molar mass calculated is 24.90 g/mol, hence the gas is most likely to be NO.

The ratio between mass and the amount of substance of any sample is called molar mass.

To determine whether the gas is NO, NO2, or N2O5, we need to calculate the molar mass of the gas and compare it to the molar masses of these three possible gases.

n = PV/RT

Given, P = 760.0 mmHg, V = 250.0 mL = 0.2500 L, T = 17.00°C + 273.15 = 290.15 K, and R = 0.08206 L atm/mol K.

So, n = (760.0 mmHg)(0.2500 L)/(0.08206 L atm/mol K)(290.15 K) = 0.01003 mol

M = m/n

Given m = 0.2500 g.

M = 0.2500 g/0.01003 mol = 24.90 g/mol

Comparing this molar mass to the molar masses of NO (30.01 g/mol), NO2 (46.01 g/mol), and N2O5 (108.01 g/mol), we see that the gas is most likely NO.

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Note: The question given on the portal is incomplete. Here is the complete question.

Question: A 250.0-mL flask contains 0.2500 g of a volatile oxide of nitrogen. The pressure in the flask is 760.0 mmHg at 17.00°C. Is the gas NO, NO2, or N2O5?

Answer:

NO 2200! 800 proprobably

Explanation:

just did wrong

Answer:

800 kJ

Explanation:

Answer:

There is no attachment

however, u could remove the object

Answer:

The pressure of an object, is made off of atoms, and the hotter they are, the quicker they'll go. Meaning they're under pressure, and the atoms begin to start to melt, and as it'll go the object will start catching on fire. The way how an object and atom are out of pressure is to be cooled, the cooling of an atom freezes the atom, which'll mean they wont move or do anything matter of fact. Thus, the cooling of atoms is how you take an object/atom out of pressure.

Hope this helps. :)

The growth of the balloon after being taken out of liquid nitrogen is a result of the increase in temperature, which leads to an increase in the kinetic energy and speed of the gas molecules, causing them to spread out and expand, resulting in the expansion of the balloon.

The phenomenon you are describing, where a small, partially inflated balloon grows in size after being taken out of liquid nitrogen, can be explained by the principles of gas expansion due to temperature change.

When the balloon is submerged in liquid nitrogen, it is exposed to an extremely low temperature. As a result, the air molecules inside the balloon lose thermal energy and their average kinetic energy decreases. This decrease in kinetic energy causes the molecules to slow down and move closer together, leading to a decrease in pressure and volume of the gas inside the balloon.

When the balloon is removed from the liquid nitrogen and placed on the table, it starts to warm up. As the temperature increases, the air molecules regain thermal energy and their average kinetic energy rises. This increase in kinetic energy causes the molecules to move faster and spread out, leading to an increase in pressure and volume of the gas inside the balloon.

Furthermore, gases typically exhibit a property known as Thermal expansion, which means they expand when heated and contract when cooled. As the temperature of the air inside the balloon rises, the gas expands, causing the balloon to grow in size.

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Answer:

O, S, Se, Te, Po

Explanation:

O, S, Se, Te, Po are all elements found in group sixteen of the periodic table. Remember that the commonality between all the elements in the same group of the periodic table is that they all possess the same number of outermost electrons. All elements in the same group must have the same number of outermost electrons in their outermost shell.

Now, having six electrons in their outermost shell implies that they readily bond with two other atoms to complete their octet. In accordance with the octet rule. This explains why oxygen bonds with calcium by gaining two electrons in calcium oxide.

A) If, the pressure is 10.0 atm, the temperature in the 2.50 L container filled with 175 g of argon is approximately 57.3 K. B) If the temperature is 225 K, the pressure in the 2.50 L container filled with 175 g of argon is approximately 79.1 atm.

Firstly, we can use the ideal gas law equation;

PV = nRT

Where;

P = pressure (in atm)

V = volume (in liters)

n = number of moles of gas

R = ideal gas constant (0.0821 L·atm/mol·K)

T = temperature (in Kelvin)

Given;

V = 2.50 L

m (mass of argon) = 175 g

P = 10.0 atm

First, we need to calculate the number of moles of argon using the given mass and the molar mass of argon.

The molar mass of argon will be approximately 39.95 g/mol.

Number of moles (n) = mass/molar mass

n = 175 g / 39.95 g/mol

n ≈ 4.38 mol

Now, we rearrange the ideal gas law equation to solve for temperature (T);

T = PV / (nR)

Substituting the given values, we have:

T = (10.0 atm) × (2.50 L) / (4.38 mol × 0.0821 L·atm/mol·K)

Calculating this expression, we find;

T ≈ 57.3 K

Therefore, if the pressure is 10.0 atm, the temperature in the 2.50 L container filled with 175 g of argon is approximately 57.3 K.

Given;

T = 225 K

To find the pressure (P), we rearrange the ideal gas law equation as follows;

P = nRT / V

Substituting the given values, we have:

P = (4.38 mol × 0.0821 L·atm/mol·K × 225 K) / (2.50 L)

Calculating this expression, we find:

P ≈ 79.1 atm

Therefore, if the temperature is 225 K, the pressure in the 2.50 L container filled with 175 g of argon is approximately 79.1 atm.

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--The given question is incomplete, the complete question is

"A 2.50-L container is filled with 175 g argon. a. If the pressure is 10.0 atm, what is the temperature? b. If the temperature is 225 K, what is the pressure? "--

The two compounds are Identical because they share the same intense quality, is the answer.

The boiling point is a bulk property, meaning that it is a property of a substance or sample that does not change as the amount of the substance or sample changes. This is the right response because of this.

Density is one characteristic that can be used to distinguish between two substances because different substances have distinct qualities. The density of an object is a characteristic that is independent of its size or shape.

Mass, weight, and volume are examples of extensive qualities that change depending on the amount of the substance.

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O3 is called as Ozone. There are two resonance structure in O3 that contribute equally to the overall hybrid structure of the molecule.

Resonance structures can be drawn in different ways. In resonance structures, one can only change the location of bonds and electron pairs and not the amount or type of atoms. Ozone is an inorganic molecule with the formula O₃. Ozone is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O₂. That breaks down in the lower atmosphere to O₂. It  is used in many industries. Ozone is used for purifying air and drinking water in industrial waste treatment, oils, bleaching and waxes and to make other chemicals. Two resonance structures can be drawn for ozone. The location of the double bond changes in the structure. Both the resonance structures of ozone are stable.

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The option that is not true is (b) Codons could be only two bases long if there were only 3 amino acids.

The statement that is not true in the given options is: Codons could be only two bases long if there were only 3 amino acids.In genetics, codons are the sequence of three nucleotides that form a specific amino acid in a polypeptide chain. Therefore, the options are as follows:

a) Codons could be only two bases long if there were only 14 different amino acids in proteins. This statement is true as there are 64 possible codons, and only 20 amino acids are coded for, which means some amino acids are coded by multiple codons.

b) Codons could be only two bases long if there were only 3 amino acids. This statement is false as there are only 16 different two-base codons, which is not enough to code for all 20 amino acids.

c) If the genetic code were overlapping, then the same amino acid would be specified by more than one codon. This statement is true because the genetic code is degenerate, meaning that some amino acids have more than one codon that codes for them.

d) There is no codon that specifies the start signal for protein synthesis. This statement is false as AUG (adenine-uracil-guanine) is the start codon and specifies the amino acid methionine.

Therefore, the option that is not true is (b) Codons could be only two bases long if there were only 3 amino acids.

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Answer:

It will double in size

Explanation:

i hope its correct

Answer:

A major environmental concern related to nuclear power is the creation of radioactive wastes such as uranium mill tailings, spent (used) reactor fuel, and other radioactive wastes. These materials can remain radioactive and dangerous to human health for thousands of years.

Answer:

SO2

Explanation:

that's my answer

Sana mKatolong

Answer:

In Thomson's model, the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged “plums” surrounded by positively charged “pudding”. The 1904 Thomson model was disproved by Hans Geiger's and Ernest Marsden's 1909 gold foil experiment.

Advantage: mining asteroids in space would be able to gain a larger amount resources from one asteroid then a mine for 1 month and it would be able to some what stop the destruction of earth's natural resources

Disadvantage: finding and asteroid close to earth then stopping it and mining will be very expensive and transporting it back even if calculations were in place to these things then it would will take time for and asteroid to come near

Answer:

What grade r u in

Explanation:

Just bcauz Ima coo dud and 5=5 and 1=1

Answer:

the method is fractional distillation

1) a) The apparatus that can be used to separate a mixture of ethanol and water is called a fractional distillation apparatus. It consists of the following components:

b) The method of separation used in this apparatus is called fractional distillation.

2) In fractional distillation, the fractionating column provides additional surfaces for the vaporized components to condense and revalorize.

Distillation flask: This is a round-bottomed flask where the mixture of ethanol and water is initially placed.

Fractionating column: A long column with several glass beads or plates. It provides a large surface area for the vaporized components to condense and revalorize, aiding in the separation process.

Thermometer: It is placed at the top of the fractionating column to monitor the temperature during the distillation process.

Condenser: It is a coiled glass tube connected to the fractionating column. Cold water flows through the condenser, causing the vaporized components to condense back into liquid form.

Receiver flask: This is where the separated components are collected. The receiver flask is placed at the end of the condenser.

b) The method of separation used in this apparatus is called fractional distillation. Fractional distillation is employed when the components of a mixture have similar boiling points. In the case of ethanol and water, they form an azeotropic mixture with a boiling point of around 78.2°C. Simple distillation would not effectively separate these two components because they would boil together and vaporize simultaneously.

In fractional distillation, the fractionating column provides additional surfaces for the vaporized components to condense and revaporize. This repeated condensation and revalorization process allows for more efficient separation. The higher surface area in the fractionating column helps to achieve better separation of the ethanol and water, resulting in a more concentrated sample of ethanol in the distillate collected in the receiver flask.

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Answer:

There are recessive traits and dominant traits

Explanation:

recessive traits are always hidden

dominant traits are the ones that are present in an organism

some recessive traits can be passed on to offsprings to become dominant

and some dominant traits can be passed on to become recessive traits

that's life

Answer:

because of genetic variation.

Explanation:

because of meiosis and a process called crossing over, there is genetic variation and diversity in the world, with humans and animals.

Answer:

Electrically neutral atoms simply possess the same number of electrons as protons.

Explanation:

This gives the objects a balance of both type of charge. There are 11 electrons and 10 protons.

The statement is True. Electrically neutral atoms have an equal number of electrons and protons, balancing out the atomic charges and making the atom neutral.

The statement 'Electrically neutral atoms have equal numbers of electrons and protons' is True. In an electrically neutral atom, the number of protons in the nucleus is exactly balanced by the number of electrons surrounding the nucleus. This is due to the fact that the proton has a positive charge, and the electron has an equivalent but negative charge. So, when the number of protons equals the number of electrons, these charges cancel each other out and the atom as a whole is neutral.

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Answer:

a ) 2Na +Cl2 ---->2NaCl

b) 63.8g

Explanation:

please let me know if the 2nd answer is right than I can explain it to u how I did it

Answer:

1CH₄ + 2O₂ -> 1CO₂ + 2H₂O

Explanation:

Reactants:

1 C

4 H

4 O

Products:

1 C

4 H

4 O

The equation is balanced.

Answer:

Explanation:

Food wrappers and aluminium wrappers are widely use for packing various eatable items.

For example, in our homes our mother wraps our food for lunch in aluminium foil.

As it helps in keeping the food warm for hours.

Thus, we can conclude that out of the given options, a packaging waste is the garbage collector collecting.

The molar solubility of silver iodide can be calculated using the molar solubility of silver iodide is 1.2 × 10–8 M, rounded to 2 significant figures..

The solubility product constant (Ksp) is a measure of the degree to which a sparingly soluble salt dissociates into its constituent ions in solution. The Ksp expression is written as the product of the concentrations of the ions raised to their stoichiometric coefficients in the balanced chemical equation. By assuming that the substance dissociates completely, we can use the Ksp expression to calculate the molar solubility of the salt. In this case, the molar solubility of silver iodide is calculated to be 1.2 × 10–8 M, which indicates that only a very small amount of AgI dissolves in water.

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A hydrogen bond is a type of chemical bond that forms when an electronegative atom (such as oxygen or nitrogen) forms an electrostatic attraction to a hydrogen atom that is already covalently bonded to another electronegative atom.

In order for a hydrogen bond to form, three conditions must be met:

1. The hydrogen atom must be covalently bonded to an electronegative atom such as oxygen or nitrogen

2. The hydrogen atom must be partially positively charged (has a partial positive charge). This is due to the fact that the covalently bonded electronegative atom has a stronger pull on the shared electrons than the hydrogen atom does.

3. The electrostatic attraction between the partially positively charged hydrogen atom and a nearby electronegative atom must be strong enough to overcome the repulsive forces between the two atoms.

When these three conditions are met, a hydrogen bond can form.

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The cultures of prehistoric humans are primarily known through the excavation of stone tools and other durable artifacts, such as the Oldowan and Acheulian tool traditions.

Stone tools and imperishable artifacts serve as key archaeological evidence for understanding prehistoric cultures. Through meticulous excavation and analysis, archaeologists have been able to piece together the lifestyles, technological advancements, and social behaviors of early human societies. The term "paleolithic" refers to the Old Stone Age, a time when humans relied on stone tools as their primary implements.

The Oldowan tool tradition is considered the earliest stone tool industry, dating back around 2.6 million years ago. It is characterized by simple tools, such as choppers and scrapers, which were crafted by flaking off pieces from larger stones. These tools were primarily used for basic activities like butchering and processing animal carcasses.

Later, the Acheulian tool tradition emerged around 1.76 million years ago, representing an advancement in stone tool technology. Acheulian tools, such as handaxes and cleavers, were more refined and standardized, showcasing an increased level of sophistication in tool-making techniques. These tools served a wide range of purposes, including hunting, woodworking, and shaping raw materials.

By studying the Oldowan and Acheulian tool traditions, researchers gain valuable insights into the cognitive abilities, cultural development, and technological progress of early humans. The examination of these artifacts provides evidence of their adaptability, problem-solving skills, and the gradual refinement of their tool-making techniques over time.

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Answer:

The equinoxes are the only time when both the Northern and Southern Hemispheres experience roughly equal amounts of daytime and nighttime. On Earth, there are two equinoxes every year: one around March 21 and another around September 22.

Explanation:

The mass of \(CO_{2}\) that forms is approximately 0.299 grams.

The term "partial pressure" refers to the pressure that one gas in a combination imposes. Partial pressure refers to the pressure exerted by a gas in a gas mixture if it alone inhabited the entire volume occupied by the combination.

To find the mass of \(CO_{2}\) that forms in the reaction between CO(g) and  \(O_{2}\)(g) in a 1.1-L container at 1.0x10^3 K with an initial total pressure of 2.3 atm and a final total pressure of 1.8 atm, follow these steps:

1. Calculate the initial moles of the gas mixture:
Use the ideal gas law, PV = nRT. Rearrange to solve for n: n = PV / RT.
Initial moles (n_initial) = (2.3 atm)(1.1 L) / (0.0821 L atm/mol K)(1.0x10^3 K)

= 0.0309 moles.

2. Calculate the final moles of the gas mixture:
Final moles (n_final) = (1.8 atm)(1.1 L) / (0.0821 L atm/mol K)(1.0x10^3 K)

= 0.0241 moles.

3. Determine the moles of  \(CO_{2}\) formed:
Moles of  \(CO_{2}\) (n_ \(CO_{2}\))

= n_initial - n_final = 0.0309 moles - 0.0241 moles

= 0.0068 moles.

4. Calculate the mass of  \(CO_{2}\) formed:
Mass of  \(CO_{2}\) (m_ \(CO_{2}\))

= n_ \(CO_{2}\) x molar mass of  \(CO_{2}\)

= 0.0068 moles x 44.01 g/mol = 0.299 grams.

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