A 75 mL sample of He gas is at 97°C and 0.975 atm. If the sample is cooled to 29°C and the pressure is increased to 1.25 atm, what will the new volume be?​

Dimethylsulfoxide has the formula C2H6SO.Therefore, the correct answer is option D: 25.4.

Option D.

To determine the mass percent of carbon in this compound, we need to calculate the molar mass of the compound first. Molar mass is the sum of the atomic masses of all the atoms in the molecule. We can use the periodic table to obtain the atomic masses. For this compound, the molar mass will be:2 (atomic mass of carbon) + 6 (atomic mass of hydrogen) + 32 (atomic mass of sulfur + 16 (atomic mass of oxygen) = 78 g/molNext, we need to determine the mass of carbon in one mole of the compound. We can do this by multiplying the number of carbon atoms by the atomic mass of carbon. In this case, there are 2 carbon atoms in one mole of the compound. Therefore, the mass of carbon in one mole of the compound is:2 (number of carbon atoms) x 12.01 (atomic mass of carbon) = 24.02 g/molFinally, we can calculate the mass percent of carbon in dimethylsulfoxide using the formula:mass percent of carbon = (mass of carbon / total molar mass) x 100%Substituting the values we obtained:mass percent of carbon = (24.02 g/mol / 78 g/mol) x 100% = 30.77%Rounding to three significant figures gives us a final answer of 30.7%.

Option D.

For more questions on Dimethylsulfoxide

https://brainly.com/question/10914338

#SPJ8

Seven squares represent seven f-subshell orbitals with magnetic quantum number values of -3, -2, -1, 0, +1, +2, +3.

The paramagnetic nature is represented by a single electron in the seventh orbital.

This quantum number describes the spatial orientations of electrons.

It defines the orientation of an orbital in space of a given energy(n) and shape using magnetic quantum numbers (l). It divides the subshell into orbitals made up of electrons.

It is represented by the symbol ml. Each subshell contains 2l+1 orbitals. The value of lies between -l and +l, where l is the azimuthal quantum number.

Orbitals with l=0, s-subshell, and ml = 0 = 1

P-subshell ml = -1, 0, +1 = 3 orbitals for l=1.

When l=2, the d-subshell ml = -2, -1, 0, +1, +2 = 5 orbitals.

For l=3, the f-subshell ml are -3, -2, -1, 0, +1, +2, +3 = 7 orbitals.

These orbitals are represented as squares in orbital notations of an atom, with electrons represented by upward and downward arrows.

To know more about azimuthal quantum number, visit:

https://brainly.com/question/30024510

#SPJ1

Answer:

it was invented in 1960

Explanation:

it was descibed as a wooden instrument ideally suited for gravity programmes in areas of limited latitude and temperature variations

Answer:

The formula for the volume of a solid rectangle is width x depth x height. Divide the volume by the product of the length and width to calculate the height of a rectangular object. For this example, the rectangular object has a length of 20, a width of 10 and a volume of 6,000.

Explanation:

Answer:

660

Explanation:

The molarity of the 10.0% CaCl₂ solution is 0.9007 M

Molarity of a solution is defined as the number of moles of solute present in 1 litre of the solution.

To calculate the molarity of the CaCl₂ solution, we need to first determine the mass of CaCl₂ present in one liter i.e. 1000 ml of the solution.

A 10.0% CaCl2 solution means that 10.0 g of CaCl₂ is present in 100 g of the solution.

We can use this information to calculate the mass of CaCl2 in one liter of the solution as follows:

Mass of CaCl₂ in 1 L

= (10.0 g CaCl₂ / 100 g solution) x (1000 g solution / 1 L solution)

∴ Mass of CaCl₂ in 1 L = 100 g CaCl₂ / 1 L solution

Now since we know the mass of CaCl₂ in one liter of the solution, we can use the molarity formula to calculate the molarity of the solution:

Molarity = moles of solute / volume of solution (in liters)

To find the moles of CaCl₂ present in one liter of the solution, we need to divide the mass of CaCl₂ by its molar mass.

The molar mass of CaCl₂ is 110.98 g/mol

moles of CaCl₂ in 1 L

= 100 g CaCl₂ / 110.98 g/mol

= 0.9007 mol

Finally, we can use the formula for molarity to calculate the molarity of the solution:

Molarity = moles of solute / volume of solution in L

Molarity

= 0.9007 mol / 1 L

= 0.9007 M

Thus, molarity of the solution is 0.9007 M

To know more about molarity here

https://brainly.com/question/30792756

#SPJ4

\(▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)

Blank # 1 - Observation

Blank # 2 - Observation

Blank # 3 - Observation

Blank # 4 - Inference

Blank # 5 - Observation

Answer:

Numbers 1,2,3, and 5 are all O
And Number 4 is aN I

Answer:

You can separate flour and rice using a sieve, but you won't be able to separate all of the flour from the rice since the flour is too small to see.

Explanation:

.

The infrared absorptions at 1660 cm-1 and 3400 cm-1 suggest the presence of two functional groups in the compound.

The absorption at 1660 cm-1 corresponds to a carbonyl group (C=O). This is because the carbonyl bond has a strong dipole moment, and it can vibrate in different modes, including stretching, bending, and twisting. The stretching vibration of the C=O bond occurs around 1660 cm-1 in the infrared spectrum, and this is a characteristic frequency that is often used to identify the presence of carbonyl groups in organic compounds.

The absorption at 3400 cm-1 corresponds to a hydroxyl group (-OH). This is because the O-H bond has a strong dipole moment, and it can vibrate in a stretching mode. The stretching vibration of the O-H bond occurs around 3400 cm-1 in the infrared spectrum, and this is a characteristic frequency that is often used to identify the presence of hydroxyl groups in organic compounds.

Therefore, the likely functional group that may be present in the compound is a combination of a carbonyl group and a hydroxyl group. One common example of a compound with these functional groups is a carboxylic acid, which has the general formula R-COOH, where R represents a hydrocarbon chain.

To learn more about absorption

https://brainly.com/question/30697449

#SPJ4

Answer:

609 grams

Explanation:

Given that,

The density of silver is 10.5 g/mL

We need to find the weight of the silver if we have 58 mL of silver.

It is based on the concept of the definition of density. It is equal to mass per unit volume. So,

\(d=\dfrac{m}{V}\\\\m =d\times V\\\\m=10.5\ g/mL\times 58\ mL\\\\m=609\ g\)

Hence, the mass of the silver is 609 grams.

The ion most commonly formed by fluorine is the fluoride ion (F-). This ion has a charge of -1, meaning it has gained an electron to form an anion.

Fluorine has a high electronegativity, meaning it is highly likely to attract an electron to complete its outer shell and become more stable. As a result, the fluoride ion is formed when fluorine gains an electron.

to know more about solubility intake pls visit:

https://brainly.com/question/22819229

#SPJ11

Answer:

You are correct however there is also potential energy because the energy is released over a period of time.

Hope this helps!

They emit ionizing radiation (alpha, beta, and/or gamma rays) that has the property of releasing energy. Because it has the potential to dislodge firmly bound electrons from an atom's orbit, the energy is known as ionizing radiation.

a radioactive process where a nucleus spontaneously splits, loses electrons, or undergoes fission while also emitting radiation.

Some of the mass of uranium nuclei is transformed into kinetic energy during radioactive decay (the energy of the moving particles).

To know more about radioactive decay visit:-

https://brainly.com/question/1770619

#SPJ4

Newton's third law states that for every action, there is an equal and opposite reaction. This law is applicable in many situations.

The situation where a full cart is harder to move than an empty one is an example of Newton's third law. When a force is applied to the full cart, the cart pushes back with an equal and opposite force making it harder to move.

When a runner has the wind at her back, it is not an example of Newton's third law. This is because the wind is an external force, and there is no direct action-reaction pair involved.

When walking, the foot pushes the ground, and the ground pushes the foot with an equal and opposite force, making it an example of Newton's third law.

When an astronaut moves backward by throwing a hammer forward, it is an example of Newton's third law. When the astronaut throws the hammer forward, the hammer exerts an equal and opposite force on the astronaut, propelling the astronaut backward.

In summary, situations where two objects interact with each other, exerting equal and opposite forces, are examples of Newton's third law.

To know more about Newton's third law  visit:

https://brainly.com/question/29768600

#SPJ11

When diluting an acid, it is recommended to add the acid to water and not the other way around (adding water to acid). This is because the process of mixing an acid with water can release a significant amount of heat, and adding water to concentrated acid can lead to vigorous and potentially dangerous reactions.

Here are a few reasons why it is safer to add acid to water:

Heat Dissipation: The dilution of strong acids is an exothermic process, which means it releases heat. By adding the acid slowly to water while stirring, the heat generated can be dissipated more effectively. On the other hand, if water is added to concentrated acid, there is a risk of localized heating and potential splattering due to rapid boiling or splashing of the hot acid.

Spattering and Splashing: When water is added to concentrated acid, there is a higher likelihood of spattering and splashing of the acid, which can cause burns or injuries. Adding acid to water allows for better control and minimizes the chances of violent reactions or sudden release of energy.

Dilution Gradually: By adding acid to water, you can gradually increase the volume and concentration, ensuring better mixing and distribution of the acid in the water. This helps prevent localized high concentrations of acid that could lead to rapid reactions.

Acidic Fumes and Aerosols: Concentrated acids often release fumes and aerosols that can be hazardous to inhale. By adding acid to water, any released fumes or aerosols are more likely to be contained within the larger volume of the solution, reducing the risk of exposure.

It's important to follow proper safety protocols, wear appropriate protective equipment (such as gloves and goggles), work in a well-ventilated area, and consult specific guidelines or procedures provided by chemical manufacturers or regulatory agencies when handling and diluting acids.

learn more about diluting here

https://brainly.com/question/28548168

#SPJ11

It became thicker and its viscosity decreased and cannot flow as easily as before.

You ignite a chemical reaction by adding the borax solution to the glue mixture.

In a chemical reaction, the molecules of glue and borax combine to form a flexible, springy new substance. With rubber's vulcanization serving as a model, chemical cross-linking has been extensively employed to change the physical properties of polymeric materials.

Chemical links between polymer chains provide a substance with a more solid structure and perhaps a better-defined shape. It thickened and lost viscosity, making it more difficult to flow than it once could.

Learn more about the chemical reaction  here brainly.com/question/16714866

#SPJ4.

Answer:

Similar properties

Explanation:

Potassium (K) has atomic number 19 which means its electron configuration (pattern of electrons in it's energy levels (electron shells)) is 2·8·8·1 while Copper (Cu) has atomic number 29 which means its electron configuration is 2·8·8·8·3 hence Potassium has 4 electron shells while Copper has 5

Potassium has 19 protons (from its atomic number) while Copper has 29 protons

The number of protons and electrons is usually the same (in an atom) (that's why atoms don't naturally have charges i.e they're usually neutral) so Potassium has about 19 electrons while Copper has about 29 electrons.

So similar properties automatically becomes your answer cuz the rest are wrong.

Reactant term is used to describe the substance that is totally consumed in a chemical reaction.

What are reactants?

Reactants are the substances that enter into and are used up in a chemical reaction. They are the starting materials that come together to form the products of the reaction. Reactants are found on the left side of the equation for a chemical reaction, and the products are found on the right side. Reactants are often referred to as substrates, as they are the substances from which the reaction builds the products. All chemical reactions involve the combining of at least two reactants, usually in the presence of a catalyst. Understanding the reactants involved in a reaction is essential to understanding the reaction itself.

Therefore, Reactant term is used to describe the substance that is totally consumed in a chemical reaction.

To learn more about Reactant

Here: https://brainly.com/question/28732327

#SPJ4

Answer:

The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles KMnO4, or 158.033949 grams.

Explanation:

I belive that is correct,hope it helps:)

Answer:

Explanation:

The methyl orange indicator is typically yellow in an acidic solution with a pH below 4. If the solution is a hydrochloric acid, the indicator will likely turn red, as hydrochloric acid has a pH of around 1. If the solution has a pH between 4 and 6, the methyl orange indicator will appear orange.

D-, L-, and D-allo-threonine isomers of threonine have no nutritional or other advantages. More often than natural proteins, Thr is utilised to synthesise Thr.

Chiral centres are those to which four distinct atom groups are bound. Carbon a cannot be a chiral carbon since it has three hydrogen atoms connected to it. Since it is doubly linked to oxygen, it is not the carboxyl carbon either. Furthermore, because it is bound to three rather than four separate groups of atoms, the amino nitrogen is ineligible in any case.

Due to the two chiral centres in threonine, there are four potential stereoisomers. Other than being rare in nature, the isomers of threonine (D-, L-, and D-allo-threonine) have no nutritional or other benefit. Nowadays, synthetic Thr is used more frequently than natural proteins to make Thr.

The chiral centres of amino acids can be one or many. Except for glycine, the a-carbon is chiral in all amino acids. There are extra chiral centres in some amino acids. Because there are four distinct groups connected to the carbon atom, these are chiral centres.

To learn more about threonine refer to;

https://brainly.com/question/30611573

#SPJ4

According to valence bond theory, 2s and 2p orbital of carbon atom will be formed pi bonding.

One of it's two fundamental theories created to use quantum mechanics to describe chemical bonding would be the valence bond theory, and molecular orbital theory.

Eight valence electrons should be used to generate two double bonds in the CS2 molecule. As a result, it uses up eight of the 16 valence electrons. These valence electrons are located in the carbon atom's 2s and 2p orbitals, where they join to create a double bond.

Therefore, according to valence bond theory, 2s and 2p orbital of carbon atom will be formed pi bonding.

To know more about valence bond theory

https://brainly.com/question/23129240

#SPJ4

The mass of 45 L of neon gas at STP is 40.7 grams.

At STP (standard temperature and pressure), the temperature is 0°C or 273.15 K and the pressure is 1 atm. The molar volume of an ideal gas at STP is 22.4 L/mol.

Neon gas has a molar mass of approximately 20.18 g/mol. To find the number of moles of neon gas in 45 L at STP, we can use the following equation:

n = V / Vm

where

n = 45 L / 22.4 L/mol = 2.0089 mol

To convert moles to grams, we can use the molar mass of neon gas:

m = n * M

where m is the mass, n is the number of moles, and M is the molar mass.

m = 2.0089 mol * 20.18 g/mol = 40.7 g

Therefore, the mass of 45 L of neon gas at STP is 40.7 grams.

Learn more about standard temperature and pressure here : brainly.com/question/14820864

#SPJ1

1. solute is the substance that is being dissolve,while solvent is dissolving medium

2.saturated is solution that contain maximum amount of solut that capable of being dissolve and supersaturated is solution that contain less amount or medium of solut that capable being dissolve : example vinger

3. is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. For example, two molecules of hydrogen would be written as 2 H2, and two molecules of water would be written 2 H2O . yes it's can be change only in caseWhen you balance an equation you can only change the coefficients

If the given emf (1.5 volts) is greater than the emf you observed in your experiment, then the motor with 1.5 volts will move faster.

The speed of the motor depends on the strength of the induced emf in the coil of the electric motor.

emf = NdФ/dt

where;

F = BIL = qvB

where;

As the induced current in the coil of the motor increases, the speed of the motor will increase.

Thus, if the given emf (1.5 volts) is greater than the emf you observed in your experiment, then the motor with 1.5 volts will move faster.

Learn more about induced emf here: https://brainly.com/question/13744192

#SPJ1

Answer:

The motor will spin slower

Explanation:

The other three motors have either 9, 12, or 15 loops of wire. The more loops, the faster it goes.

According to the question the pressure inside the piston chamber is 2414.29 kPa.

Pressure is a measure of the force applied to a given area. It is usually expressed in terms of force per unit area such as pascals (Pa). Pressure is an important concept in physics and is used to describe a variety of phenomena in many areas of science. Pressure is most commonly used to describe the force applied by a gas or liquid on an object. The greater the pressure, the stronger the force. It can also be used to describe forces that are applied to a surface by a solid object. Pressure can be measured with a variety of instruments such as manometers, barometers, and pressure gauges.

The equation for Boyle's Law is P1V1=P2V2, where P1 is the original pressure, V1 is the original volume, P2 is the new pressure, and V2 is the new volume. Using this equation, we can calculate the new pressure, P2, as follows:

P2 = (P1V1)/V2

P2 = (425kPa * 2.00L) / 0.35L

P2 = 2414.29kPa

Therefore, the pressure inside the piston chamber is 2414.29kPa.

To learn more about pressure

https://brainly.com/question/25736513

#SPJ1

Answer: THe anwser for the first one is Carbon monoxide, Cupric selenide, iron or sulfide, lead dioxide

Explanation: i took these in science ur welcome

The names of the compound are CO is carbon monoxide, CuSe is cupric selenite, Fes is ferrous sulphide and PbO₂ is lead dioxide.

A compound is anything created when two or more separate chemical elements are mixed together in a specific proportion. Chemical connections that are challenging to break are created when the elements interact with one another. These bonds develop as a result of atoms sharing or trading electrons.

Various criteria can be used to categorize chemical substances. One such approach is based on the distinct components present. For instance, hydrides, oxides, and halides all contain one or more hydrogen atoms as well as one or more oxygen atoms.

Chemical compounds are made up of two or more different types of elements that are connected by covalent or ionic chemical bonds.

Thus,The names of compound are CO is carbon monoxide, CuSe is cupric selenite, Fes is ferrous sulphide and PbO₂ is lead dioxide.

To learn more about compound, follow the link;

https://brainly.com/question/14117795

#SPJ2