what type of orbital is occupied by an electron with the quantum numbers n=3, 1=2? How many degenerate orbital's of this type are found in a multi electron atom​

The first step is to convert the given volume, from liters to cubic centimeters:

Now, use the density to find the mass of the given volume:

Convert the mass to kilograms:

The answer is 1.10x10^4kg.

In comparison to cyclohexane, those following will be much more soluble in water.

The majority of cyclohexane is used to make thermoplastic intermediates and other typical uses for nylon, including garments, tents, and carpets. In recent years, benzene has been replaced by cyclohexane in many applications and is still utilized as a solvent in industrial and chemical operations.

Consuming cyclohexane could upset your stomach. At cyclohexane concentrations typically present in the environment, these effects are unlikely to manifest. The skin may become irritated if cyclohexane is spilled on it. Skin dryness and cracking may result from prolonged or repetitive skin contact.

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Answer:

The mixture (B + C) will change from liquid to gases.

This is because at constant temperature, the mixture will evaporate.

Graph 1 is expected to be assigned for the mixture (B + C)

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4.734 x 10^-23 kg is atomic mass units does it weigh.

1 amu = 1.661 x 10^-24 g.

So, 23.985 amu = 23.985 x 1.661 x 10^-24 = 39.839 x 10^-24 gm. = 3.984 x 10^-23 g.(four significant figures)

mass in micro grams, m = (39.839 x 10^-24) / (10^-6) = 39.839 x 10^-18 µg = 3.984 x 10^-17 µg.

Atomic Mass Unit is also refers as amu.

1 amu = 1.66 x 10^-24 g

Total mass of 28520 atoms of 24Mg = 28520 x 1.66 x 10^-24 g = 4.734 x 10^-20 g = 4.734 x 10^-23 kg.

The quantity of substance that makes up an element's atom is known as its atomic mass. One-twelfth of the mass of the carbon-12 atom, with an assigned atomic mass of 12 units, is expressed as a multiple of 1.992646547 1023 gram, or in other words, 1.992646547 gram. One atomic mass unit is equivalent to 1.660539040 1024 grams on this scale (amu). The atomic mass unit is sometimes referred to as the dalton in honor of English scientist John Dalton (Da).

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Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

As a result, at the same temperature and pressure as the 12.4 g sample of hydrogen gas, a 56.2 g sample of oxygen gas takes up 39.3 l.

1mol of petrol takes up 22.4 litres at STP. So, 32 grams of oxygen take up 22.4 litres of space. Consequently, 33.6 litres of space are taken up. Hence, 33.6 litres is the volume that 48 g of O2 at STP occupy.

To resolve this issue, we can employ the ideal petrol rule, PV = nRT. If both gases have the same temperature and pressure, we can put up the equation as follows: PV = nRT

For hydrogen gas: n(H2) = m(H2) / M(H2)

= 12.4 g / 2.016 g/mol  

= 6.16 mol

Substituting the given values, we get:

(1 atm)(23.5 L) = (6.16 mol)(0.08206 L·atm/mol·K)(T)

Solving for T, we get:

T = (1 atm)(23.5 L) / (6.16 mol)(0.08206 L·atm/mol·K)

T = 283 K

For oxygen gas:

n(O2) = m(O2) / M(O2)

n(O2) = 56.2 g / 31.9988 g/mol

n(O2) = 1.757 mol

Substituting the values, we get:

(P)(V) = (n)(R)(T)

(1 atm)(V) = (1.757 mol)(0.08206 L·atm/mol·K)(283 K)

Solving for V, we get:

V = (1.757 mol)(0.08206 L·atm/mol·K)(283 K) / (1 atm) = 39.3 L

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Yes, that statement is generally correct. A scientific law is a statement that describes a phenomenon or pattern in nature, often expressed mathematically, without attempting to explain why it occurs. A scientific theory, on the other hand, is a well-substantiated explanation for a set of phenomena, based on empirical evidence and scientific reasoning.

A scientific law summarizes what happens in a particular situation, often in the form of an equation or formula, whereas a scientific theory attempts to explain why it happens.

For example, the law of gravity describes the attraction between masses, but it does not explain why this attraction occurs. In contrast, the theory of general relativity attempts to explain the underlying principles of gravity, including its effects on the curvature of space-time.

It's worth noting that both scientific laws and scientific theories are based on empirical evidence, but they serve different purposes in scientific inquiry. Laws describe what happens in a particular situation, while theories attempt to explain why it happens.

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Answer: Aluminum, because it allows heat to flow easily.

Have a nice day!

Answer:

A

Explanation:

Answer:

B. The western coast of the united states

Explanation:

I'm not sure if its correct but its pretty simple to understand, if you look at the arrows red represents heat, and blue represents cold,  the red arrows (warm climate) is at the left more towards the U.S, therefore looking at the guide of North West South and East, it is at the western coast of the u.s

Hope this help! <3

Answer:

An electromagnetic wave is a wave that is created as a result of vibrations between an electric field and a magnetic field.

Explanation:

Hope this helps!!

Dissolve 60g of potassium bromide in 340g of water to produce 15% (mass/mass) aqueous solution of potassium bromide.

Here we have to prepare a total of 400 g of solution. Aqueous solution means the solvent we use here is water.

So to prepare 400 g of 15% aqueous solution of potassium bromide, we need to find out how many grams of potassium bromide need to be dissolved in water and how many grams of water must be used.

Here the weight percent is given, that is 15%

       15/100 = weight of potassium bromide/ 400 g

       0 .15      = weight of potassium bromide / 400

      weight of potassium bromide needed = 0.15 × 400

                                                                       =  60 g

So, we calculated the required amount of potassium bromide as 60 grams. The total weight of the solution to be made is 400 grams.

So amount of water required = 400 - 60

                                                =  340 g

So we need to mix 60 grams of potassium bromide in 340 grams of water to get a 15% (mass/mass) aqueous solution.

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Answer:

jdksyeuueueuueueuueueudyydheyehhdhdhdhdhhdhdhdhjjdj

Answer:

atoms of oxygen is present in 10H2SO4 ?

Explanation:

10 * 4 = 40

There are several physical methods that can be used to monitor the rate of a chemical reaction are; Spectrophotometry, Conductometry, and Turbidity measurement

Spectrophotometry involves measuring the changes in the intensity of light absorbed or transmitted by a solution during a chemical reaction. Spectrophotometers are used to measure the amount of light absorbed or transmitted by a sample at different wavelengths.

Conductometry  involves measuring the changes in electrical conductivity of a solution during a chemical reaction. Conductivity meters are used to measure the electrical conductivity of a solution, which can change as the concentration of ions in the solution changes during a chemical reaction.

Turbidity measurement involves measuring the changes in the clarity or turbidity of a solution during a chemical reaction. Turbidimeters or nephelometers can be used to measure the amount of light scattered by a sample, which can change as particles form or dissolve during a reaction.

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

"What are the physical methods of monitoring the rate of a chemical reaction?"--

If we start with 16 pounds of a radioactive substance, the amount that would be left after 3 half-lives will be 2 pounds.

The half-life of a decaying substance is given by the following mathematical expression:

N (t) = \(N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} }\)

Where N(t) is the quantity remaining, \(N_o\) is the initial quantity, t is the time that has elapsed, and \(t_\frac{1}{2}\) is the half-life.

In this case,  \(N_o\) = 16 pounds and \(\frac{t}{t_\frac{1}{2} }\) = 3.

Substituting the values into the equation:

N(3) = \(16(1/2)^3\)

       = 2 pounds

In other words, the amount of a radioactive substance that would remain from an initial amount of 16 pounds after 3 half-lives would be 2 pounds.

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Answer::

Explanation::

Answer:

ok, here is your answer

Explanation:

AI-generated answer

To find the mass of oxygen that reacted, we need to use the Law of Conservation of Mass, which states that in a chemical reaction, the mass of the reactants equals the mass of the products.

First, we need to find the number of moles of hydrogen that reacted:

Molar mass of hydrogen (H₂) = 2.016 g/mol

Number of moles of H₂ = mass/molar mass = 46.2 g/2.016 g/mol = 22.92 mol

Next, we need to use the balanced chemical equation to find the number of moles of water produced:

hydrogen + oxygen → water

2H₂ + O₂ → 2H₂O

From the equation, we can see that for every 2 moles of H₂, 1 mole of O₂ is required to produce 2 moles of H₂O. Therefore, the number of moles of O₂ required to produce 22.92 moles of H₂O is:

Number of moles of O₂ = 1/2 x 22.92 mol = 11.46 mol

Finally, we can find the mass of oxygen that reacted by using its molar mass:

Molar mass of oxygen (O₂) = 32.00 g/mol

Mass of oxygen = number of moles x molar mass = 11.46 mol x 32.00 g/mol = 366.72 g

Therefore, the mass of oxygen that reacted is 366.72 g.

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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The correct option that would convert mg/L into molarity (mol/L)- Convert mg/L to get g/L then multiply by the volume (L). so, option (a) is correct.

What is molarity ?

The amount of solute in one mole per liter of solution is known as molarity. For instance, when table salt is dissolved in water, the solute is salt, and the solution is water. 58.44 grams make up one mole of sodium chloride. One molar solution, often known as 1M, is created when 58.44 grams of sodium chloride are dissolved in one liter of water.

What is volume ?

Volume, a three-dimensional quantity, is used to calculate the capacity of a solid shape. It suggests that the volume of a closed figure determines the amount of three-dimensional space it can occupy.

Therefore, the correct option that would convert mg/L into molarity (mol/L)- Convert mg/L to get g/L then multiply by the volume (L). so, option (a) is correct.

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Answer: Not A, its B

Explanation: B

Answer:

The answer is B.

Explanation:

Systematic error arises from a faulty measuring device, imperfect observation methods, or an uncontrolled environment.

Answer:

your answer is a

Explanation:

Answer:

Not sure ask Estellia

Explanation:

Answer:

h= 4.9

Explanation:

l x w x h = a

7.66 x 3.75 x h = 141

28.725h = 141

Divide both sides by 28.725 to solve for h.

Answer:

Solute

Explanation

A substance that gets dissolved to create a solution is best described as to as

Answer:

B.

Explanation:

Weather changes daily and varies in different areas around the world

You just gotta match the moles:

moles of NaOH = 0.02737 L * 0.2115 M = 0.005789 mol of NaOH. The amount of moles of HCl it can neutralize should be the same since they are in a 1:1 ratio. Therefore, you can do moles of NaOH divided by 0.003745L to get the answer. It turns out to be 0.1546M.

The mass of the solid aluminum that forms are 192.73 grams

To determine the mass of solid aluminum that forms, we need to use stoichiometry and the balanced chemical equation for the reaction between magnesium and aluminum nitrate.

The balanced chemical equation is:

3 Mg + 2 Al(\(NO_{3}\))3 → 3 Mg(\(NO_{3}\))2 + 2 Al

The equation shows that 3 moles of magnesium react with 2 moles of aluminum to produce 2 moles of aluminum nitrate.

To calculate the mass of solid aluminum, we need to know the amount of magnesium used. Given that the volume of the magnesium is 150.0 mL and its density is 1.738 g/cm³, we can calculate the mass of magnesium using the formula:

Mass = Volume × Density

Mass of magnesium = 150.0 mL × 1.738 g/cm³ = 260.7 g

Now, using the molar mass of magnesium (24.31 g/mol) and the molar ratio from the balanced equation, we can determine the moles of magnesium used:

Moles of magnesium = Mass of magnesium / Molar mass of magnesium

= 260.7 g / 24.31 g/mol

= 10.72 mol

According to the stoichiometry of the balanced equation, the ratio of moles of magnesium to moles of aluminum is 3:2. Therefore, the moles of aluminum formed will be:

Moles of aluminum = (2/3) × Moles of magnesium

= (2/3) × 10.72 mol

= 7.15 mol

Finally, we can calculate the mass of solid aluminum using its molar mass (26.98 g/mol):

Mass of aluminum = Moles of aluminum × Molar mass of aluminum

= 7.15 mol × 26.98 g/mol

= 192.73 g

Therefore, the mass of the solid aluminum that forms is approximately 192.73 grams.

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Assuming a similar number of molecules, the matter that occupies the most space is gas. Option C is correct.

This is because gases have no definite shape or volume, and their molecules are spread out, moving freely in all directions. As a result, gases tend to occupy the entire volume of their container and expand to fill the available space. This is known as the "kinetic molecular theory" of gases.

In contrast, solids and liquids have a definite volume and shape. Solids have a fixed shape and their molecules are packed closely together, while liquids have a variable shape and their molecules are less closely packed. As a result, both solids and liquids occupy less space than gases.

It is worth noting that the volume of a solid or liquid can change under certain conditions, such as changes in temperature or pressure. However, even under these conditions, the space occupied by a solid or liquid is still less than that occupied by a gas. Option C is correct.

The complete question is

Which of the following matters occupies more space, assuming similar number of molecules?

A. Solid

B. Liquid

C. Gas

D. Solid and gas

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Answer:

              6.97 moles

Explanation:

Formula Used,

Moles = No. of Molecules ÷ 6.022 × 10²³

Putting Values,

Moles = 4.20 × 10²⁴ ÷ 6.022 × 10²³

Moles = 6.97 moles

The instantaneous rate of reaction at 17 minutes is approximately -0.178 mol dm⁻³

To find the instantaneous rate of reaction at 17 minutes, we can use the concept of differential calculus and estimate the slope of the tangent line at t=17 on the graph of rate versus time.

To do this, we can use the formula for the slope of a line

slope = (change in y) / (change in x)

In this case, the "y" values are the rates of reaction and the "x" values are the times. We want to find the slope at t=17, so we can choose two points that are very close to t=17, such as t=15 and t=20. Then, we can use these values to estimate the slope at t=17

slope = (rate at 20 min - rate at 15 min) / (20 min - 15 min)

slope = (0.135 - 0.223) / (20 - 15)

slope = -0.178

This slope represents the instantaneous rate of reaction at t=17. However, since it has a negative value, it means that the rate of reaction is decreasing at t=17.

Therefore, the instantaneous rate of reaction at 17 minutes is approximately -0.178 mol dm⁻³

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Answer:

water droplets falling on the clay

Explanation:

i finished this test and it was the right answer so lol