A gaseous mixture containing 32.00 g n2 and 16.00 g ne is placed into an 4.00 l vessel at 0.00 °C. What is the pressure of the mixture?

Since the notebook and cubes are balanced at the same level on the scale, the mass of the notebook and sugar cubes are equal.

The correct option is C.

The amount of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a chair, your bed, a football, a glass, and even air.

Masses are measured using scales.

The most typical way to measure it is as inertial mass, which refers to an object's resistance to acceleration under the influence of a net force.

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Complete question:

Ashley placed a notebook and sugar cubes on a scale.

The notebook and cubes are balanced at the same level on the scale.

Which of these describes the mass of the notebook and sugar cubes?

a. The mass of the notebook is greater than the mass of the sugar cubes

b. The mass of the notebook is less than the mass of the sugar cubes

c. The mass of the notebook is equal to the mass of the sugar cubes

Answer:

27608g

Explanation:

To calculate the mass of propane used in a balloon ride, we can multiply the density of propane by the volume of propane required.

Given:

Density of propane = 493 grams per liter

Volume of propane required = 56 liters

Mass of propane = Density × Volume

Substituting the given values:

Mass of propane = 493 g/L × 56 L

Calculating the result:

Mass of propane = 27,608 grams

Therefore, the mass of propane used in the balloon ride is 27,608 grams.

Answer:

4

Explanation:

Pressure increases when moving from the core to the crust.

Answer: 3. The mantle is denser than the crust

please give brainliest

Answer:

Activation energy is the minimum amount of energy required for a chemical reaction to occur. It acts as a barrier that must be overcome for reactant molecules to transform into products. In other words, it is the energy input necessary to break the bonds of the reactant molecules and initiate the reaction.

The role of activation energy is crucial in determining the rate of a chemical reaction. Reactions with lower activation energy proceed more quickly because a higher proportion of reactant molecules have sufficient energy to overcome the activation barrier. On the other hand, reactions with higher activation energy have a slower rate since only a small fraction of reactant molecules possess the required energy.

An example of activation energy can be seen in the combustion of methane (CH4) in the presence of oxygen (O2) to form carbon dioxide (CO2) and water (H2O). This reaction requires an ignition source, such as a spark or flame, to supply the activation energy. Once the initial activation energy is provided, the reaction proceeds exothermically, releasing energy in the form of heat and light.

Without the activation energy, the reactant molecules would remain stable and the reaction would not occur spontaneously. Activation energy ensures that reactions proceed at appropriate rates and provides a control mechanism for chemical transformations.

Explanation:

N2 + 3H2 —————-> 2NH3

Mass of nitrogen = 3.41 g

Mass of hydrogen = 2.79 g

Change it into moles

No of moles (N2) = (mass in grams)/molar mass

No of moles (N2) = 3.14/14 = 0.22 mol

No of moles (H2) = 2.79/2 = 1.4 mol

Than we find which moles produce less moles of NH3

According to equation

1 mole nitrogen produce NH3 = 2 mol

0.22 mole nitrogen produce NH3 = 2 x 0.22 = 0.44

3 mole hydrogen produce NH3 = 2 mol

1 mole hydrogen produce NH3 = 2/3 = 0.67 mol

1.4 mole hydrogen produce NH3 = 0.67x 1.4= 0.93 mol

So

nitrogen produce NH3 = 0.44 mol

Hydrogen produce NH3 = 0.93 mol

So nitrogen produce less moles of NH3 so it is limiting reactant.

In that reaction 0.44 mol ammonia is produced

We need to mix 120 mL of 50% dextrose solution with 480 mL of 5% dextrose solution to prepare 600 mL of 20% dextrose solution.

To prepare a solution of a desired concentration, we need to know the concentrations and volumes of the solutions we are mixing. In this case, we are mixing two solutions of different concentrations to get a desired concentration.

Let's assume x mL of the 50% solution is needed.

Amount of dextrose in the 50% solution = 50% of x

Amount of dextrose in the 5% solution = 5% of (600 - x)

Total amount of dextrose = 20% of 600 mL = 120 mL

So, we can write:

0.5x + 0.05(600 - x) = 0.2(600)

Solving this equation, we get x = 120 mL.

As a result, we must combine 120 mL of 50% dextrose solution with 480 mL of 5% dextrose solution to get 600 mL of 20% dextrose solution.

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Espero que esos ejercicios y esas fórmulas te ayuden

The bonds found within the hair that help organize protein chains in order to build hair are called side bonds.

These bonds are also known as crosslinks, and they are formed between sulfur atoms in the protein chains. Side bonds are responsible for the strength and elasticity of hair, as they help hold the protein chains together. They can be broken down by chemicals such as bleach or hair relaxers, which is why it's important to use hair care products that are gentle and designed for your specific hair type.
The bonds found within the hair that help organize protein chains in order to build hair are called A. Side bonds. Side bonds, also known as hydrogen bonds, salt bonds, and disulfide bonds, are responsible for organizing protein chains and maintaining the strength and structure of the hair. These bonds are essential for keeping hair healthy and strong, and they can be affected by various factors such as heat, water, and chemical treatments. In summary, side bonds play a crucial role in organizing protein chains to build and maintain the structure of the hair.

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Answer:  The atomic mass in the periodic table is a weighted average of all naturally occuring isotopes of zinc.

Explanation:  The elements consist of protons, neutrons, and electrons.  Protons and nuetrons are assigned a mass of 1 amu (atomic mass unit).  Electrons are too small to make a big difference in the mass, so they are assign a 0 for their amu.  Since the elements consist of just these three particles, any one atom must add up to a whole number atomic mass.  Zinc consists of 30 protons, by definition.  A neutral atom has 30 electrons.  The balance of a zinc atom is made up of neutrons.  A Zn-65 atom would have 30 protons and 35 neutrons:

30 Protons = 30 amu

35 Neutrons = 35 amu

30 Electrons = 0 amu

Total AMU = 65

Any ONE Zn atom should have a whole number atomic mass.  But zinc in the environment has isotopes of zinc - atoms that contain differing numbers of neutrons.  A Zn-66 atom would have 36, instead of 35 neutrons.  (P:30, N:36, E:0 = 66 amu).  The atomic mass in the Periodic Table reflects the average of these isotopes as found in the environment.  If the 65 and 66 isotopes were the only ones found naturally, an atomic mass of 65.38 would suggest around 60% of the atoms are Zn-65 and 40% are Zn-66.  The average weight atomic mass would would be 65.40

The atomic mass of zinc which is listed in periodic table is 65.38 but there is no zinc atom with that mass this is due to average atomic mass of naturally occurring isotopes of zinc.

Atomic mass is defined as the mass of an atom which has units of Dalton which is a non-SI unit.One Dalton is defined as approximately equal 1/12 of mass of carbon-12 atom.

The protons and neutrons account for the mass of an atom as they reside inside the nucleus . Electrons do not contribute to the atomic mas as they have negligible mass.

The atomic mass of atoms,ions or nuclei is slightly less than the sum of masses of constituent protons , neutrons and electrons due to the loss in binding energy.Addition of atomic masses of atoms leads to a quantity called as molecular mass.

The observed atomic mass is slightly less than the sum of masses of protons, neutrons  which is called mass defect which arises due to difference in binding energy.

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Answer:

Sublimation

Explanation:

Sublimation refers to the process by which the change of matter takes place directly from solid to liquid state. The matter from the solid-state directly changes into the gaseous state without changing into the liquid state. More energy is required in this process. This is an endothermic reaction. Dry ice is the solid carbon dioxide sublimes in the air.

C6H12(l) + 9O2(g) -> 6CO2(g) + 6H2O(g) is the balanced equation formed.

This is a balanced equation for the combustion of hexene (C6H12) in the presence of oxygen gas (O2) to produce carbon dioxide (CO2) and water vapor (H2O). The coefficients are already balanced, and the states of matter are indicated as (l) for liquid, (g) for gas, and (aq) for aqueous. This reaction requires heat and a source of ignition to start the reaction.This equation indicates that one molecule of hexene will react with nine molecules of oxygen gas to produce six molecules of carbon dioxide gas and six molecules of water vapor. The reaction requires a heat source to initiate the combustion process, which produces a flame and releases energy in the form of heat and light. The conditions for this reaction are that hexene must be in its liquid state, and oxygen must be in its gaseous state.

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The presence or absence of double bonds between the carbon atom and other atoms determines whether a carbon atom's covalent bonds to other atoms are in a tetrahedral configuration or a planar configuration.

The condition of electronic configuration is the one that determines the kinds as well as the number of bonds that a carbon atom will form with other atoms. When two carbon atoms are bonded by a double bond, the particular atom which is joined to the carbon exists in the same plane as the place of carbons. The organic molecules called hydrocarbons consists of only hydrogen and carbon.

Because reason of having four electrons by carbon in its valence shell, it is capable of forming four covalent bonds with that of other atoms. Whenever carbon forms four bonds with other atoms, the resulting molecule thus formed has a shape of tetrahedral. Generally, there are three basic types of covalent bonds which include single bonds, double bonds as well as triple bonds.

A carbon atom's covalent bonds to other atoms are in a planar configuration with the presence or absence of double bonds.

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Diels-Alder (DA) reaction is incredibly valuable method for the synthesis of 6-rings,It is not within the remit of this course to go into detail about this reaction.

• We are interested in the stereochemical outcome but need a bit of revision.

• Normally DA is highly regioselective

toluene, 120°C, no catalyst 59 benzene, 25°C, SnCl4 96

Lewis acid improves selectivity

 • It is controlled by the ‘relative sizes’ of the p orbitals in the LUMO & HOMO involved

• More accurately referred to as the orbital coefficients

• In the presence of a Lewis acid dienophile is polarised giving higher regioselectivity and a faster reaction NMe2 + regioselectivity often follows simple electronic argument (consider which C is δ+ve or δ–ve)

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While the rate constant may remain constant in this specific scenario, it is important to consider all factors that could impact the reaction rate.

The rate constant is a measure of how quickly a chemical reaction occurs, and it is determined by a variety of factors including temperature, pressure, and concentration of reactants.

If the initial concentration of substance A is doubled, the rate constant will likely stay the same. This is because the rate constant is a measure of the reaction rate per unit time, and the concentration of A does not directly affect the rate at which the reaction occurs.

However, it is important to note that increasing the concentration of A may indirectly affect the rate constant by altering other factors such as the collision frequency between reactant molecules or the activation energy required for the reaction to occur.

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Answer:

d

Explanation:

disolving is a chemical like word and if a limestone cave is forming from the acid in the water thats chemical wheathering!

Answer:

Cave formation from the acid in water dissolving limestone

Explanation:

Answer:

just to get points

Explanation:

The following actions describe deposition as flowing soil or mud due to gravity. Option D.

Sedimentation is the accumulation of sediments carried by the wind running water sea or ice. Sediments are carried as pebbles sand mud, or dissolved salts in water. A deposition is the direct transition of a substance from the gaseous state to the solid state on cooling without going through the liquid state.

Sedimentation is the geological process in which sediments soils and rocks are added to form landforms or land masses. Wind ice water and gravity cause previously weathered surface material to deposit and lose sufficient kinetic energy within the fluid to form a layer of sediment. Several factors influence how sediment settles. Sediment is removed from new surface locations. Precipitation is the change of state of a gaseous substance into a solid.

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Answer:

Salts do not conduct electricity at the solid state since the ions are in a fixed position in the lattice. However, at the molten state or in solution, the ions are free and they can move within the liquid phase to serve as electrons shuttles and therefore, they become conductive.

Explanation:

Answer: 4 moles of ammonia.

Explanation:

So you’re trying to make NH 3

 from N 2

 and H 2

.

In chemistry, that is denoted by the following reaction:

N 2

 + H 2

 → NH 3

But you can’t create or destroy atoms, so you need to have the same number of both of them on the same side.

You have 2 hydrogen atoms on the left and 3 on the right. How can we make both amounts the same? If we try to make 2 NH 3

 molecules instead of 1, we have 6 hydrogen atoms in total. 6/2 =3 H 2

 . This also means we have 2 nitrogen atoms, so we have balanced the equation.

N 2

 + 3 H 2

 → 2 NH 3

Now comes the fun part. Those numbers in front of the different formulas are the amount of moles that go into the equation. You need 1 mole of nitrogen and 3 moles of hydrogen to make 2 moles of ammonia. If we multiply these numbers by 2, we can also say you need 2 moles of nitrogen and 6 moles of hydrogen to make 4 moles of ammonia. (And you’d have 1 mole of nitrogen left over.)

London dispersion forces are a type of Van der Waals force that is a feeble intermolecular contact caused by the creation of instantaneous dipoles in molecules.

The coulombic reactions between instantaneous dipoles lead to London dispersion pressures. All molecules (and atoms) exhibit dispersion forces, which are usually higher for heavier, more polarizable, and molecules with bigger surface areas.
In honour of Fritz London (1900–1954), a German scientist who created this model to describe the intermolecular attractions that occur between non–polar molecules, the instantaneous dipole–induced dipole attractions are known as London dispersion forces. All compounds experience the London dispersion forces.
Net dipole moments are negative for non-polar substances. When their charge cloud is twisted, they produce a transient dipole moment, which in turn induces a transient dipole moment on a different non-polar particle.
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This is not the best way to organize a periodic table because two elements might have similar atomic mass.

Periodic table is a chart in which arrangement of chemical elements are done.

In the early periodic table elements are arranged on the basis of their atomic masses, while after sometime Moseley arranged the periodic table on the basis of atomic number as he proposed that properties of an element is justified on the basis of number if electrons.

And mass of two substances may be same so it is difficult to differentiate between them.

Hence, two elements might have similar atomic mass.

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Answer:

It's all about temperature, when water heats, it turns to a gas - like water on the stove. When heat is reduced, it goes back to a liquid, and when it's frozen (like an ice cube) it's now a solid.

Explanation:

Answer:

Evaporation liquid to a gas. Liquid to solid is freezing.

Gas to liquid is condensation.

Explanation:

Answer: Mass is 40 kg, weight is 64 N

Explanation: Mass is same everywhere, weight G = mg, it depends on acceleration of gravity

Sodium chloride dissolves well in water because it has charges that allow it to interact with water.

Ionic compounds include sodium chloride. The ions in the solute are attracted to water because it is a polar molecule. The sodium chloride crystal dissolves when the surrounding water molecules draw the sodium and chlorine ions one at a time into the solution.

The partial negative charge on the O atom of water attracts the Na+ ions because opposite charges are drawn to one another.

The ionic link that held sodium and chloride ions together is broken when water molecules force the ions apart. As seen in this picture, the sodium and chloride atoms are encircled by water molecules after the salt compounds are separated. After that, the salt dissolves and forms a homogenous solution.

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Answer:

0.43 M

Explanation:

Use the dilution equation: M1V1 = M2V2

M1 = 13 M

V1 = 10 mL

M2 = ?

V2 = 300 mL

Solve for M2 --> M2 = M1V1/V2

M2 = (13 M)(10 mL) / (300 mL) = 0.43 M

Answer:

1. 0.5333333m (Calculator Soup Work Calculator)

2.

9. 29.1666666667% efficient

10. 44.5% efficient

Explanation:

will do other answers later

Answer:

Oil

Explanation: