BaBr2(aq) →? Predict the products and balance the reactions

The total pressure of the gas is calculated as 849 mmHg.

The term partial pressure is the pressure that is exerted by an individual gas in a mixture of gases.

In this case, the partial pressures of hydrogen and water are 789 mmHg and  60 mmHg respectively.

Thus, the total pressure of the gas =  60 mmHg +  789 mmHg = 849 mmHg.

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The four types of crystals are ionic crystals, metallic crystals, covalent crystals, and molecular crystals.

Crystal, any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry.

An ionic crystal is a crystalline ionic compound. They are solids consisting of ions bound together by their electrostatic attraction into a regular lattice.

A crystalline solid in which the atoms are held together by metallic bonds. Metallic crystals are found in some interstitial compounds as well as in metals and alloys.

Covalent Crystals also called atomic crystals are the molecular solids in which the same or different atoms are joined together by covalent bonding.

Molecular crystals are substances that have relatively weak intermolecular binding, such as dry ice.

Thus, there are four types of crystals such as ionic crystals, metallic crystals, covalent crystals, and molecular crystals.

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The term for the substance formed during a chemical reaction is product.

Product is the name for the substance that results from a chemical reaction. A chemical reaction is a process that converts one material into another. As a result, during a chemical reaction, new compounds known as products are created.

The species that result from chemical reactions are called products. Reactants undergo a high energy transition state before becoming products in a chemical reaction. The reactants are consumed as a result of this reaction.

For example

CH₄ +2O₂⇒CO₂ +H₂O

Oxygen and methane are reactants while water and Carbon dioxide is the products.

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a. solar energy

the earth is warmed by the sun, which is solar (or infrared).

Answer: Physical Chemistry

Explanation: The spectrum of an incandescent substance appearing on a spectrogram as one or more bright lines against a dark background.

The bright line spectrum is a physical property of an element because it exhibits the physical appearance of an element.

The formation of a bright line spectrum when a light beam passes through an analyte sample and some of the light is absorbed by the atoms present in the sample which excites the electrons to the higher energy states.

As the excited electron of an atom returns to the ground state, the energy is released in the form of discrete or quantized lines of light. Spectral lines are generated by the transitions of electrons within atoms.

As the electrons move closer or farther from the nucleus of an atom, energy in the form of light is absorbed or emitted. A continuous spectrum has accompanied the light of all wavelengths within a certain range whereas a line spectrum only contains only a few wavelengths.

Therefore, the bright line spectrum is considered a physical property of an element because of the occurrence in the physical appearance of that element.

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Any material such as in this case the gummy bear’s “skin” acts as a selectively permeable membrane if it allows the passage of certain substances from both sides of the barrier.

A selectively permeable membrane is any barrier that allows the movement of substances to both sides in regard to concentration gradients or the presence of certain structures such as channel proteins in the case of the cell membrane.

Therefore, with this data, we can see that a selectively permeable membrane such as the cell membrane allows the movement of substances between both sides of the barrier in a selective way.

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Answer:

1.95g

Explanation:

Find mass in CO

Find C mass

Answer:

The standard enthalpy change for the given reaction can be determined using the standard enthalpies of formation for the reactants and products.

The balanced chemical equation for the reaction is:

2 KOH(s) + CO2(g) → K2CO3(s) + H2O(g)

The standard enthalpy change can be calculated using the following equation:

ΔH° = ΣnΔH°f(products) - ΣnΔH°f(reactants)

where ΔH° is the standard enthalpy change, ΣnΔH°f(products) is the sum of the standard enthalpies of formation of the products, and ΣnΔH°f(reactants) is the sum of the standard enthalpies of formation of the reactants.

From the supplemental data, the standard enthalpies of formation for the reactants and products are:

ΔH°f(KOH) = -424.6 kJ/mol

ΔH°f(CO2) = -393.5 kJ/mol

ΔH°f(K2CO3) = -1151.0 kJ/mol

ΔH°f(H2O) = -241.8 kJ/mol

Substituting these values into the equation, we get:

ΔH° = [2(-1151.0) + (-241.8)] - [2(-424.6) + (-393.5)]

ΔH° = -2302.8 + 818.7

ΔH° = -1484.1 kJ/mol

Therefore, the standard enthalpy change for the given reaction is -1484.1 kJ/mol.

(a) When the density of gold is 19.32 g/\(cm^{3}\) than area of the gold leaf is approximately 0.4386 cm².

(b) The length of the gold fiber is given by h = 0.4386 cm³ / (π * (2.500 × 10⁻⁴ cm)²).

To solve these problems, we can use the formula for the volume of a shape and the given density of gold.

(a) To find the area of the leaf, we can use the formula for the volume of a rectangular shape: V = A * h, where V is the volume, A is the area, and h is the thickness.

Given the mass of gold (m = 8.489 g) and density (ρ = 19.32 g/cm³), we can find the volume: V = m / ρ.

Substituting the values, we have V = 8.489 g / 19.32 g/cm³ = 0.4386 cm³.

Since the leaf is pressed into a thin shape, we can assume it has a rectangular shape, and the volume is approximately equal to the area: A ≈ V = 0.4386 cm².

(b) To find the length of the fiber, we can use the formula for the volume of a cylindrical shape: V = π * r² * h, where V is the volume, r is the radius, and h is the length.

Given the mass of gold (m = 8.489 g) and density (ρ = 19.32 g/cm³), we can find the volume: V = m / ρ.

Substituting the values, we have V = 8.489 g / 19.32 g/cm³ = 0.4386 cm³.

The volume of a cylinder is also equal to the product of the cross-sectional area (π * r²) and the length (h), so we have: π * r² * h = 0.4386 cm³.

Substituting the radius (r = 2.500 μm = 2.500 × 10⁻⁴ cm), we can solve for the length: h = 0.4386 cm³ / (π * (2.500 × 10⁻⁴ cm)²).

To summarize:

(a) The area of the gold leaf is approximately 0.4386 cm².

(b) The length of the gold fiber is given by h = 0.4386 cm³ / (π * (2.500 × 10⁻⁴ cm)²).

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Answer:

velocity = 100 km/h

Explanation:

To calculate the velocity given the distance travelled and the time taken, we can use the following formula:

\(\boxed{\mathrm{velocity = \frac{distance \ travelled}{time \ taken}}}\).

In the question, we were told that Ayana travelled 60 km in 0.6 h. Using this information and the formula above, we can calculate Ayana's velocity:

velocity = \(\frac{60 \ km}{0.6 \ h}\)

             = 100 km/h

Therefore, her velocity was 100 km/h.

The equation 2H2O ⇌ H3O+ + OH- represents the self-ionization of water, where water molecules can react with each other to form hydronium ions (H3O+) and hydroxide ions (OH-).

If H3O+ is added:

Adding hydronium ions (H3O+) will shift the equilibrium to the left, favoring the reverse reaction. This means more water molecules will combine to form H2O, reducing the concentration of H3O+ ions.

If H3O+ is taken away:

Removing hydronium ions (H3O+) will shift the equilibrium to the right, favoring the forward reaction. This means more water molecules will ionize to form H3O+ ions to compensate for the loss.

If OH- is added:

Adding hydroxide ions (OH-) will shift the equilibrium to the left, favoring the reverse reaction. This means more water molecules will combine to form H2O, reducing the concentration of OH- ions.

If OH- is removed:

Removing hydroxide ions (OH-) will shift the equilibrium to the right, favoring the forward reaction. This means more water molecules will ionize to form OH- ions to compensate for the loss.

In summary, adding or removing H3O+ or OH- ions will cause the equilibrium to shift in order to maintain the balance of concentrations and satisfy the equilibrium expression.

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A Strong Electrolyte in water is a chemical that totally ionizes in solution. An electrolyte that absorbs almost entirely in water is said to be a strong electrolyte.

A solution or solute that totally, or nearly completely, ionic compounds or decomposes in a solution is referred to as a strong electrolyte. In the solution, these ions act as effective conductors of electric current. A substance that is a good electrical conductor while in aqueous solution was the original definition of a "strong electrolyte."

An electrolytes that dissolves almost entirely in water is said to be a strong electrolyte. Hydrogen chloride is a good illustration of the a strong electrolyte (HCl). An electrolyte that just doesn't entirely dissolve in water is referred to as a weak electrolyte.

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Answer:

Ionization energy increases as you go across a period, and increases as you move up a group. So, elements with the smallest ionization energy would be at the bottom left corner of the periodic table. Examples of elements with small ionization energy: Francium (Fr), Cesium (Cs), Radium (Ra).

Answer:

B I have taken the quiz already 90%

Answer:

the difference is fumaric acid the carboxylic acid groups are trans (E) and in maleic acid they are cis (Z)

Explanation:

and  Fumarate is an intermediate in the citric acid cycle used by cells to produce energy in the form of adenosine triphosphate (ATP) from food

Answer:

here is my answerrrrrrr

The law of conservation of mass states that matter cannot be created or destroyed, only transformed from one form to another. This means that the total mass of the reactants in a chemical reaction must equal the total mass of the products.

One way to demonstrate the law of conservation of mass is to conduct a simple chemical reaction in which a solid reactant is transformed into a gas product. For example, you can heat a piece of zinc metal in a test tube and observe the production of zinc oxide gas.

To set up the activity, you will need:

A piece of zinc metal

A test tube

A test tube holder

A bunsen burner

A tripod and wire gauze

Here's how to conduct the activity:

Set up the bunsen burner and place the test tube holder on the tripod.

Place the piece of zinc metal in the test tube.

Place the test tube in the test tube holder.

Light the bunsen burner and adjust the flame so that it is not too hot.

Hold the test tube over the flame until the zinc metal begins to react and produce gas.

Observe the gas being produced and note any changes in the appearance of the zinc metal.

As the zinc metal reacts with the oxygen in the air, it will produce zinc oxide gas. You should see the mass of the zinc metal decrease as it is transformed into gas. However, the total mass of the reactants (zinc metal and oxygen) will be equal to the total mass of the products (zinc oxide gas).

This activity demonstrates the law of conservation of mass, as the total mass of the reactants and products remains constant.

The gas in the tank has a final temperature of roughly 480.5 K.

Gas molecules interacting with an object's surface generate force, which is what creates gas pressure. Although though there is very little force involved in each impact, any surface with a sizeable area is subject to many of them quickly, which can lead to a high pressure.

As per the ideal gas law,

PV = nRT

We can write: Provided that the volume and quantity of moles of gas remain constant.

P1/T1 = P2/T2

where the initial pressure and temperature are P1 and T1, and the ultimate pressure and temperature are P2 and T2.

With the values provided, we have:

P1 = 7.571 atm

T1 = 283.2 K

P2 = 12.846 atm

We can solve for T2:

T2 = (P2/P1) * T1

= (12.846 atm / 7.571 atm) * 283.2 K

= 480.5 K

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Answer:

Explanation:

(a) C5H5N(aq)+H2O(l)⇌C5H5NH+(aq)+OH−(aq)

When particles in a solid or liquid move faster they move slightly further

apart and is referred to as Elastic collision

Liquids and gases possess more kinetic energy than solids which is why

there is movement of its atoms in a system. Gas have the highest kinetic

energy and solids have the lowest. When the atoms move ,they collide with

one another which pushes the particles further apart.

The atoms in liquid and gas exhibit vibrational(rotational) motion which brings about movement and collision of the particles.

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The partial pressure of nitrogen in the resulting mixture, given 1.92 moles of N₂ and 2.69 moles of O₂ in a 60.41 L container is 78.96 KPa

The folloing data were obatined from the question:

From the above, we can obtain the partial pressure of nitrogen as illustrated below:

PV = nRT

60.41 × P = 1.92 × 8.314 × 298.83

Divide both sides by 60.41

P = (1.92 × 8.314 × 298.83) / 60.41

P = 78.96 KPa

Thus, we can conclude that the partial pressure of nitrogen is 78.96 KPa

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The placement of electrons in orbitals surrounding an atomic nucleus is known as electronic configuration

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Answer:

B

Explanation:

it's on the internet and I just know because I did this before too

Answer:

The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.

Explanation:

:)

(a)

Heptane is the limiting factor. as O2 can be found in air.

(b)

balanced equation: C7H16 + 11 O2 --> 7 CO2 + 8 H2O

moles of O2= mass/ mr

moles of O2= 25000/32

moles of O2 = 781.25 moles

According to molar ratio:  

11 : 7

moles of carbon dioxide:

(781.25/11) * 7

497.16 moles

using mass = moles * mr

mass of CO2 = 497.16  * 44 = 21875.04 g -- this is mass of CO2

Answer:

Oxygen

Explanation:

Given the following question:

The following atom has 7 protons (plus charge)
The following atom has 8 neutrons (negative charge)
The following atom has 7 electrons since the number of electrons are equal to the number of protons the atom has.

The following atom is oxygen with a mass number of 16: (see photo below)
Let the red represent protons...
Let the gray represent the neutrons...
Let the blue represent the electrons...

Hope this helps.

The pressure change of a system can be determined from the change in volume using Boyle's law. The new pressure of the system if the volume is increased by a factor of 2.3 is 224.8 kPa.

According Boyle's law the volume of a system is inversely proportional to the pressure of the system thus PV = constant . Thus as pressure increases volume will decrease.

If p1 and v1 be the initial pressure and initial volume respectively and p2,v2 be the final quantities, then the we have the relation,

p1v1 = p2v2.

Here the initial pressure is 517.1 kPa and volume increases by a factor of 2.3 therefore, v2 = 2.3 V1. Now, the final pressure p2 is calculated as follows:

517.1 kPa × v1 =  p2 × 2.3 v1

 P2 = (517.1 kPa × v1 l)/2.3 v1 l

      = 517.1 kPa / 2.3

      = 224.8 kPa

Therefore, the new pressure of the system if the volume is increased by a factor of 2.3 is 224.8 kPa.

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