Which is the electron configuration for nobelium (No)?
[Rn]7s25f14
[Rn]7s25f7
[Ne]3s23p7
[Xe]6s25d1

The sample of pure copper weighs 33.6 g.

(Mass of Solute/Volume of Solution) x 100 represents the mass by volume proportion. It compares the volume of the solution to the mass or weight of the solute in grammes, for instance (e.g., in mL). An illustration would be a medical saline solution with a 0.9 percent (w/v) NaCl solution, which contains 0.9 g of NaCl per 100 mL of solution.

The calculation requires the density of copper, which is 8.96 g/cm³.

The following is the formula to determine a substance's mass:

mass = density × volume

Substituting the values given:

mass = 8.96 g/cm³ × 3.75 cm³

mass = 33.6 g

The sample of pure copper therefore has a mass of 33.6 g.

To know more about copper visit:-

https://brainly.com/question/13677872

#SPJ1

It is the charterer's duty to hire a ship for a certain period of time to transport cargo or passengers.

The charterer's job is to hire a ship for a set amount of time to transport goods or people. They are in charge of negotiating the charter conditions with the vessel owner or broker, setting up the required licences and paperwork, and ensuring the timely and safe delivery of cargo or passengers. Broker: The broker's job is to make it easier for the charterer and the vessel owner to come to an agreement. They serve as middlemen, using their connections and market expertise to identify suitable vessels and agree upon conditions of charter that are acceptable to both sides. A appropriate vessel must be provided by the vessel owner in order to satisfy the charterer's needs. They keep the vessel seaworthy, adhere to pertinent laws, and guarantee effective operations throughout the charter.

To know more about charter, here:

https://brainly.com/question/27998149

#SPJ4

Approximately 0.26 moles of CO2 fill the container.

To determine the number of moles of CO2 that fill the container, we can use the ideal gas law equation:

PV = nRT

Where:

P = pressure of the gas (1.00 atm)

V = volume of the gas (6.28 L)

n = number of moles of gas (unknown)

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

T = temperature of the gas in Kelvin (293 K)

Rearranging the equation, we have:

n = PV / RT

Substituting the given values:

n = (1.00 atm) * (6.28 L) / (0.0821 L·atm/mol·K) * (293 K)

Calculating the expression:

n = 6.28 / 24.0513

n ≈ 0.26 moles

Therefore, approximately 0.26 moles of CO2 fill the container.

It's worth noting that the answer is rounded to two decimal places, as the given values were provided with two decimal places. Additionally, the calculation assumes ideal gas behavior and that there are no other gases or impurities present in the container.

For more such question on moles visit:

https://brainly.com/question/29367909

#SPJ8

Answer:

Cr is oxidised

and

Zn is reduced

[ Reduced reactant ] :

Cr^( + 3 ) + 3 e^( - 1 ) ===》 Cr^( 0 )

_____________________________

[ Oxidicided reactant ] :

Zn^(0) ===》Zn^( + 2 ) + 2 e^( - 1 )

The equilibrium constant expression for the reaction is (PSiO2)4/(PSi2H6)2(PO2)7. Hence, the correct option is C.

In this expression, the concentrations of the reactants (Si2H6 and O2) are raised to the power of their respective stoichiometric coefficients, and the concentration of the product (SiO2) is raised to the power of its stoichiometric coefficient. The concentration of the liquid product (H2O) is not included in the equilibrium constant expression because it is in the liquid state.

The correct expression for the equilibrium constant (K) for the given reaction is:

C. (PSiO2)4/(PSi2H6)2(PO2)7

Therefore, the equilibrium constant expression for the reaction is (PSiO2)4/(PSi2H6)2(PO2)7.

Learn more about equilibrium constant from the link given below.

https://brainly.com/question/28559466

#SPJ4

Answer:

number of outer shell electrons

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore,  the bond can be represented as M·×X.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.

The metal belonging to group 1 will have 1 electron in the outermost shell which can be represented as M·

Halogens have also 1 electron in its outermost shell which can be represented as X×

When these combine to form bond then the bond can be represented as M·×X.

Therefore,  the bond can be represented as M·×X.

To learn more about chemical compound, here:

brainly.com/question/26487468

#SPJ1

Answer:

A. They don't form compounds

Explanation:

Answer:

they can form bonds with the electrons in the two outer most shells

If the conversion of glucose to \(CO_2\) and \(H_2O\) in the body is 90% complete, then the volume of  \(O_2\) consumed would be 0.745 L x 0.9 = 0.671 L (rounded to three significant figures).

The balanced equation for the reaction of glucose (C6H12O6) with oxygen ( \(O_2\)) in the body is:

\(C_6H_{12}O_6 + 6O_2\) → 6 \(CO_2\)  + \(6H_2O\) + energy

According to the equation, 1 mole of glucose reacts with 6 moles of  \(O_2\) to produce 6 moles of  \(CO_2\)  and 6 moles of  \(O_2\) Therefore, to determine the volume of  \(O_2\) consumed, we need to calculate the moles of glucose and the moles of  \(O_2\) consumed.

Calculate the moles of glucose:

moles of glucose = mass of glucose / molar mass of glucose

moles of glucose = 1 g / 180.16 g/mol

moles of glucose = 0.00555 mol

Calculate the moles of  \(O_2\) consumed:

moles of  \(O_2\) = 6 x moles of glucose

moles of  \(O_2\) = 6 x 0.00555 mol

moles of  \(O_2\) = 0.0333 mol

Calculate the volume of  \(O_2\) consumed at STP (standard temperature and pressure, which is 0°C and 1 atm):

volume of  \(O_2\) = moles of  \(O_2\) x molar volume at STP

molar volume at STP = 22.4 L/mol

volume of  \(O_2\) = 0.0333 mol x 22.4 L/mol

volume of \(O_2\) = 0.745 L

Learn more about glucose visit: brainly.com/question/7224754

#SPJ4

The percentage yield of the reaction from the given parameters would be 30.99%. Option B.

The percent yield of a reaction is the actual amount of product formed relative to the theoretical amount of product that is supposed to be formed from the same reaction.

This is mathematically expressed as:

Percent yield = actual yield/theoretical yield x 100%

In this case: the actual yield = 16.81 g, the theoretical yield = 54.25 g

Thus, the percent yield of the reaction can be calculated as:

16.81/54.25 x 100% = 30.99%

In other words, the percent yield of the reaction would be 30.99%.

More on percent yield can be found here: https://brainly.com/question/12704041

#SPJ1

Answer: B. 30.99%

Explanation:

Answer: 63.55

Explanation:

The attached chart shows the calculation.  The orange line points to the % abundance of Cu-65, which is the difference of 100% less the % Abundance of Cu-65 (since there are only 2 isotopes).

The weighted average contribution of each istope is calculated (blue arrow) and then summed to find the atomic mass of copper.

The molality of the solution is 0.064 mol/kg. Molality is defined as the number of moles of solute per kilogram of solvent.

To calculate molality, we need to first find the number of moles of solute (potassium chloride) and then divide it by the mass of solvent (water) in kilograms.

The number of moles of solute can be calculated using the formula: moles = mass/molar mass, where the molar mass of potassium chloride is 74.55 g/mol.

So, the number of moles of potassium chloride in the solution is: 4.11 g / 74.55 g/mol = 0.055 mol

The mass of water in kilograms can be calculated using the formula: mass in kg = mass in g / 1000 g/kg, where the mass of water in the solution is 64.3 g.

So, the mass of water in the solution is: 64.3 g / 1000 g/kg = 0.064 kg

Finally, the molality of the solution can be calculated using the formula: molality = moles of solute/mass of solvent in kg

So, the molality of the solution is: 0.055 mol / 0.064 kg = 0.064 mol/kg

Learn more about molality here:

https://brainly.com/question/24065939

#SPJ4

Answer: n= 1.02 moles

Explanation: relative atomic mass of Fe is 55.85.

Amount of substance n= m/M = 56.7 g /55.85 g/mol

The balanced chemical equation for the reaction between nitrogen (\(N_{2}\)) and hydrogen (\(H_{2}\)) to form ammonia (\(NH_{3}\)) is:

\(N_{2}\) + 3\(H_{2}\) -> 2\(NH_{3}\)

In the given mixture of six nitrogen molecules and six hydrogen molecules, we have an equal number of both reactants. According to the stoichiometry of the reaction, one molecule of \(N_{2}\) reacts with three molecules of \(H_{2}\) to produce two molecules of \(NH_{3}\).

Since we have six molecules of each reactant, we can determine that three molecules of \(N_{2}\) will react with nine molecules of \(H_{2}\), resulting in six molecules of \(NH_{3}\) as the final product.

Therefore, the final product mixture will consist of six \(NH_{3}\) molecules, three \(N_{2}\) molecules (which did not react), and three \(H_{2}\) molecules (which did not react).

To know more about chemical equation, refer here:

https://brainly.com/question/28792948#

#SPJ11

The citrate synthase-catalyzed phase must have significant favorable free power change so that it can contribute to the production of  high energy molecule, ATP, in order for citric acid cycle to function effectively.

A molecule is an object comprised of at least two atoms that are linked together chemically; the precise number of atomic nuclei that make up a molecule is known. One hydrogen atom gets joined to one halogen atom to form the molecule HCl(g), for instance. It is referred to as a diatomic molecule and has only two atoms.

This term was meant to cover its original definition, which was "the smallest quantity of a component that nevertheless keeps the properties of that substance." "An atom is a body that can't cut in two; a dime is the smallest conceivable component of a specific substance," wrote James Maxwell in 1873 when defining atom and molecule.

To know more about molecule visit :

https://brainly.com/question/19556990

#SPJ4

Answer:

0.009871

Explanation:

\( 9.871\times 10^{-3} = 0.009871\)

Answer:

.009871

Explanation:

Answer:

A. The energy increases the molecular motion and the kinetic energy of the substance.

Explanation:

When a substance absorbs energy, the molecules will move faster because there will be more vibrations and collisions.

As a result of more molecular motion, the kinetic energy will increase because there is more movement.

Answer:

A. Because you have to simplify

Answer:

decomposition

Explanation:

i dont cap

Answer:

Chemical change :has change in mass, heat is needed, new element is formed, hard to reverse.......

Physicalchange:does not have change in mass, heat is not necessary, no new element is formed, easy to reverse

Answer:

pH ≈ 4.21

The acidity of a solution can be expressed as:

pH = -log₁₀[H⁺] = -log₁₀[H₃O⁺]. Historically, pH is an acronym for "potential of Hydrogen". The scale goes from 1 to 14, where acidic solutions are measured to have lower pH values than basic or alkaline solutions. a pH of 7 represents a neutral solution. Pure distilled water has a pH of 7, whereas drinking water has a slightly greater pH than 7, due to the chemicals added to eliminate harmful bacteria.

Generally, in calculating pH, we use the formula: pH = -log₁₀[H⁺], where [H⁺] = concentration of hydrogen ions. However, sometimes the formula pH = -log₁₀[H₃O⁺] may also be used where [H3O+] = hydronium ion concentration. The hydronium ion is basically just the H⁺ ion released that bonds with the H₂O molecule to form H₃O⁺. The two above formulas can be used interchangeably.

To calculate the pH of a solution with [H₃O⁺] = 6.19×10⁻⁵ M:

pH = -log₁₀(6.19×10⁻⁵) ≈ 4.208

To learn more about pH:

https://brainly.com/question/27945512

The observation, in this case, is quantitative.

Quantitative observations are observations that can be recorded based on quantitative data. In other words, they are observations that can be assigned numerical values.

Quantitative observations are as opposed to qualitative observations because the former cannot be assigned numerical values. They can be ranked or qualified.

In this case, Danielle and Heather could assign numbers to the length, width, and height of the tank in order to calculate its volume.

More on quantitative observations can be found here: https://brainly.com/question/17491501

The pH of the solution will be 10.47.

The pH of a solution is mathematically given as:

 pH = - log [\(H^+\)] of -log [\(H_3O^+\)]

Thus, in this case, with  [\(H_3O^+\)]  of 3.4 x 10-¹¹ M:

pH = -log 3.4 x \(10^-^1^1\) = 10.47

Thus, the pH of the solution will be 10.47.

More on pH can be found here: https://brainly.com/question/15289741

#SPJ1

The ionization values belong to the element magnesium (Mg). Ionization values help us determine the amount of energy that will be required to remove one or more electrons from an atom. The third period is where we can locate the element that has these ionization values.

These ionization values are listed in the table given below:Element: Mg (Magnesium)First ionization energy: 738 kJ/molSecond ionization energy: 1450 kJ/molThird ionization energy: 7732.7 kJ/mol

For a neutral atom, the first ionization energy (IE1) is the amount of energy required to remove an electron from the outermost shell. As we move from left to right in a period, the ionization energy increases. In the third period, Mg (magnesium) has first, second, and third ionization energies of 738 kJ/mol, 1450 kJ/mol, and 7732.7 kJ/mol, respectively. Magnesium is a chemical element that has an atomic number of 12. It has two valence electrons and is located in group 2 of the periodic table. Magnesium has a melting point of 1,202°F (650°C) and a boiling point of 1,994°F (1,090°C). It is a silver-white metal that is widely used in the manufacture of alloys and other industrial applications.

learn more about ionization energy

https://brainly.com/question/20658080

#SPJ11

The features that make H₂O a polar molecule are:

It is a bond that occurs when the bonding atoms have a difference in electronegativity causing the generation of an area with higher electron density creating a positive pole and a negative pole.

The oxygen atom in water has a partial negative charge, while the hydrogen atoms have a partial positive charge. This results in an overall dipole moment, with the molecule having a slightly positive end and a slightly negative end.

H₂O is a polar molecule due to its bent molecular shape, an uneven distribution of electron density, and uneven electron distribution within each bond of the molecule. This results in an overall electrical charge for the molecule.

Learn more about polar molecule here https://brainly.com/question/1433127

#SPJ11