Hydrogen peroxide decomposes into water and oxygen gas. During an investigation, 0. 365 mol of oxygen is collected by water displacement. The volume of the gas is 13. 5 l at a temperature of 23oc. What is the pressure of the dry oxygen gas in kpa?.

Answer: C

Explanation:

Answer:

God's power is not reflected here.

Explanation:

2,2,4,4tetramethyl pentane

Answer:

I thing Calcium Perchlorate

It totally depends on the laser power (mW). The divergence of the light is depending on it.

A device that uses stimulated emission of photons from excited atoms or molecules to produce a strong beam of coherent monochromatic light is a laser.

When electrons in optical materials like glass, crystal, or gas absorb energy from an electrical current or light, a laser is formed.

When a 5mW 650 nm laser glows on a white surface in complete darkness, we can see it from 500 to 1 km distant.

Because of the divergence, the projected dot 1 km distant will be a huge dot with a diameter of 20–30 m30 m and will be extremely dim.

Hence,It totally depends on the laser power (mW). The divergence of the light is depending on it.

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The pressure of a gas is directly proportional to its volume, according to Boyle's Law. this pressure is less than the maximum pressure that the can can withstand (3,800 kPa), the can will not burst.

Therefore, we can use the following equation to find the pressure of the gas in the can after it is crushed: P1V1 = P2V2 where P1 and V1 are the initial pressure and volume of the gas, and P2 and V2 are the final pressure and volume of the gas, respectively. Given that the initial volume (V1) of the gas in the can is 235 mL and the initial pressure (P1) is 110 kPa, we can substitute these values into the equation P1V1 = P2V2 110 kPa × 235 mL = P2 × 8.5 mL Solving for P2, we get: P2 = (110 kPa × 235 mL) / 8.5 mL P2 = 3,027 kPa Therefore, the pressure of the gas in the can after it is crushed to a volume of 8.5 mL is 3,027 kPa. Since this pressure is less than the maximum pressure that the can can withstand (3,800 kPa), the can will not burst.

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Answer:

Limiting reactant is FeCl3; 1.7 g of Mg remain.

Explanation:

From the question;

The equation is;

3Mg(s) + 2FeCl₃(s) → 3MgCl₂(s) + 2Fe(s)

Amount of Mg = 41 g/24.31 g/mol = 1.687 moles

The limiting reactant yields the least amount of MgCl2

3 moles of Mg yields 3 moles of MgCl2

Hence 1.687 moles of Mg yields yields 1.687 moles of MgCl2

FeCl₃ = 175 g/162.2 g/mol = 1.0789 moles

2 moles of FeCl3 yields 3 moles of MgCl2

1.0789  moles of FeCl3 yields 1.0789  * 3/2 = 1.61835 moles of MgCl2

Hence FeCl3 is the limiting reactant

3 moles of Mg reacts with 2 moles of FeCl3

x moles of Mg reacts with 1.0789  of FeCl3

x = 3 * 1.0789  /2 = 1.61835 moles of Mg

Mass of Mg reacted = 1.61835 moles * 24.31 = 39.342 g

Mass of excess Mg = 41 g - 39.342 g = 1.7 g

Answer:

Enthalpy is a property of a thermodynamic system, defined as the sum of the system's internal energy and the product of its pressure and volume, H = U + pV

Explanation:

Answer:

Metallic bonding may be described as the sharing of free electrons among a lattice of positively charged metal ions. The structure of metallic bonds is very different from that of covalent and ionic bonds. ... In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.

\(\\ \sf\longmapsto 1mole\:is\:a\:specific\:amount\:of\:particles\:of\:a\:substance .\)

\(\\ \sf\longmapsto It\:is\:Represented\:as\:mol\)

\(\\ \sf\longmapsto 1mol=6.023\times 10^{23}particles\)

Answer:

C. 7.50g

Explanation:

The percent (%) by mass of a solute in a solution refers to the number of grams contained in 100g of solution by that solute. In this case, 5% by mass of pottasium chloride (KCl) means 5g of KCl is contained in 100g of solution.

Therefore, in 150g of solution, there would be:

5g/100g × 150g

= 0.05 × 150

= 7.50g of KCl solute.

Hence, 7.50g of pottasium chloride would be expected to be collected by evaporating 150.0 g of the solution.

Answer: The double bonds in an aromatic ring are not fixed in position as in an alkene. The electrons are considered to be in conjugation and are delocalized around the ring.

Explanation:

Chemical compounds that have conjugated planar ring systems where there are delocalized pi-electron clouds are present in place of individual alternate and single bonds.

This means that electrons present in a double bond of alkene are in conjugation.

Therefore, we can conclude that the double bonds in an aromatic ring are not fixed in position as in an alkene. The electrons are considered to be in conjugation and are delocalized around the ring.

Answer:

In resonance

Explanation:

Got it right on Acellus.

\(KNO3 (s)\)  → \(K+ (aq) + NO_3^- (aq)\) is an endothermic reaction and entropy decreasing.

An endothermic reaction is any chemical reaction that absorbs heat from its environment.

This reaction  \(KNO3 (s)\)  → \(K+ (aq) + NO_3^- (aq)\) is absorbing heat from the surrounding. Endothermic reactions are characterized by positive heat flow (into the reaction) and an increase in enthalpy (+ΔH).

It will lower the entropy of the surroundings by absorbing energy. In doing so the surroundings will lose energy, and randomness is decreased. These reactions are not spontaneous.

Hence, option B is correct.

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The following changes affect the value of the equilibrium constant for a gas-phase exothermic reaction:

Addition of a catalyst-  Increase equilibrium constant

Decrease in the temperature - Decrease equilibrium constant

Removal of a product- No effect on equilibrium constant

Decrease in the volume- Decrease equilibrium constant

Removal of a reactant- Decrease equilibrium constant

Define  exothermic process

An exothermic process in thermodynamics is a thermodynamic process or reaction that releases energy from the system to its surroundings, typically in the form of heat but occasionally in the form of light (such as a spark, flame, or flash), electricity (such as from a battery), or sound (such as the explosion produced by the burning of hydrogen).

The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K. The equilibrium constant is temperature-dependent and unaffected by the precise ratios of reactants to products, the presence of a catalyst, or the presence of inert substances. Additionally, it is unaffected by the volumes, pressures, and concentrations of the reactants and products.

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Answer:

A triglyceride is formed by combining one equivalent of glycerol with three equivalents of a fatty acid. Myristic acid is a type of saturated fatty acid with a 14-carbon chain. Therefore, a triglyceride with one equivalent of glycerol and three equivalents of myristic acid would have the chemical formula:

CH3(CH2)12COO - O - C(CH2)14COO - O - CH2 - CH(OOCR') - CH2(OOCR') - CH2(OOCR')

where R' represents the fatty acid group derived from myristic acid (CH3(CH2)12COO-).

Evaporate then condense then precipitate then runoff

Explanation:

greenhouses use this information

lot of cold places like in russia have greenhouses to grow crops

you make a mini version of a greenhouses in your home with a soda bottle

Water Cycle Transformations

The water cycle depends on the transformation of water into different forms. Starting as liquid, water can:

Evaporate: The transformation of liquid water into water vapor is important for the water cycle. When water on the Earth's surface, such as in oceans, lakes, and rivers, is heated by the sun, it turns into water vapor and rises into the atmosphere.

Condense: As the water vapor rises, it cools and transforms back into liquid water through a process called condensation. This is important because the water droplets eventually form clouds, which can lead to precipitation.

Precipitate: Precipitation is another important transformation of water in the water cycle. When the clouds become heavy with water droplets, they release the water in the form of rain, snow, sleet, or hail.

Runoff: The water that falls to the ground in precipitation can then flow over the surface of the land, as runoff, eventually making its way back into the oceans, lakes, and rivers, where the cycle starts again.

The transformation of water from one state of matter to another is essential for the water cycle because it ensures that water is continually recycled and available for plants, animals, and humans to use. Without these transformations, the water on Earth would not be able to sustain life as we know it.

chatgpt

The reaction's direction is indicated by an equation's arrow. Products are the items in front of the blunt end of the arrow that follow the pointed end, whereas responses are the items in front of the blunt end.

You can simply infer from a reaction arrow that something has changed and has evolved into something else. The arrow leads to the new thing from the previous item (the object that responded) (the thing that formed). A equation of reaction makes use of the reaction arrow. Reactant refers to the substance who has reacted.

An chemical reaction has taken place, as the arrow shows. When a chemical reaction is complete, the total atom count is equal to the atom count that existed prior to the reaction. is the same as.

Given the double arrow, it may be assumed that the response is bidirectional. Keep in mind that the response still needs to be balanced.

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The pressure of 28.8 g of ethane in a 999 cm3 container at 25 °C is Option C that is 22.9 atm. The number of atmospheres away from the ideal value is OPtion A that is 0.6 atm.

a) The virial equation is given by:

PVm=RT[1+B/Vm+C/V^2m]

To calculate the pressure of 28.8 g of ethane in a 999 cm3 container at 25 °C, we can use the following steps:

1. Calculate the number of moles of ethane.n(ethane) = mass / molar massn(ethane)

= 28.8 / 30

= 0.96 mol

2. Calculate the volume occupied by 0.96 moles of ethane at 25°C using the ideal gas equation.

PV = nRTV

= nRT / PVmV

= (0.96 mol x 0.0821 L atm K^-1 mol^-1 x 298 K) / 1 atmV

= 23.27 L or 23,270 cm^3

3. Substitute the given values in the virial equation and solve for P.

PVm=RT[1+B/Vm+C/V^2m]P(23.27)

= 1 atm [1 + (-186/23.27) + (1.06x10^4 / (23.27)^2)]

P = 22.9 atm

Hence, Option C is correct.

b) The ideal gas equation is given by:

PV = nRTFor 0.96 mol of ethane at 25°C and in a volume of 999 cm^3, we can calculate the ideal pressure using the above equation.

PV = nRTP

= nRT / VP

= (0.96 mol x 0.0821 L atm K^-1 mol^-1 x 298 K) / 0.999 LP

= 23.25 atm

The pressure obtained from the virial equation is:

P = 22.9 atm

The difference between the two values is:|23.25 - 22.9| = 0.35 atm

Hence, Option A is correct.

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Alcohols contain the functional group known as the hydroxyl group, which is characterized by an oxygen atom bonded to a hydrogen atom.

This functional group gives alcohols their characteristic properties such as the ability to form hydrogen bonds and to act as nucleophiles in chemical reactions. Alcohols can be classified based on the number of carbon atoms bonded to the carbon bearing the hydroxyl group. Primary alcohols have one carbon atom, secondary alcohols have two carbon atoms, and tertiary alcohols have three carbon atoms bonded to the carbon bearing the hydroxyl group.
Alcohols contain the hydroxyl functional group. This group consists of an oxygen atom bonded to a hydrogen atom (-OH). In an alcohol molecule, the hydroxyl group is attached to a carbon atom. Alcohols can be classified as primary, secondary, or tertiary, depending on the number of carbon atoms bonded to the carbon atom connected to the hydroxyl group. The presence of the hydroxyl group in alcohols is responsible for their characteristic properties, such as solubility in water, boiling points, and reactivity.

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For ksp of silver sulfate (ag2so4) at 1. 2 ✕ 10-5, the solubility of silver sulfate is mathematically given as

x = 5.26*10^{-4}

Generally, the equation for the  Chemical reaction is mathematically given as

Ag2SO4 ⇄ 2Ag+  + SO4 2-

Therefore

Ksp = [Ag+ ]2 *[SO4 2-]

1.2*10-5 = ( 0.15 +2x)2*(x)

x = 5.26*10^{-4}

In conclusion, the solubility of silver sulfate is

x = 5.26*10^{-4}

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If the ksp of silver sulfate (ag2so4) at 1.2 × 10⁻⁵, the solubility of silver sulfate is  5.26 × 10⁽⁻⁴⁾.

ksp value determines the equilibrium between the solids and its respective ions in a solution.

The reaction is \(\rm Ag_2SO_4 \leftrightharpoons 2Ag+ + SO_4^2-\)

The ksp pf silver sulfate is  1.2 × 10⁻⁵

Tho calculate the solubility?

Putting the values in the equation

\(\rm Ksp = [Ag^+ ]^2 \times [SO_4^ 2^-]\\\\1.2\times 10^-^5 = ( 0.15 +2x)2\times (x)\\x = 5.26\times 10^{-4}\)

Thus, the solubility of silver sulfate is  5.26 × 10⁽⁻⁴⁾.

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J.J. Thomson established the plum pudding model of an atom and discovered the electron as a result of his cathode ray tube research.

The electric discharge of a cathode ray tube was extensively researched by scientists. The crucial part was Thomson's interpretation. He interpreted the rays' deflection by the charged plates and magnets as proof of "things far smaller than atoms." Thomson determined that these bodies had a high charge-to-mass ratio and calculated the charge's actual value.

A concept of the atom as a sphere of positively charged matter with electrons positioned according to electrostatic forces was put forth by Thomson in 1904 which is now known as the plum pudding model. He not only found the electron but also concluded that it was a crucial component of an atom.

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explanation for qn:

when converting units, u can show your working in the form

37.5 × 1g/1ml, then convert the g and ml into 1/1000 kg and L, and calculate from there. In the end, u find out its actually a trick qn and 1g/ml = 1 kg/L

The change of a pH 3 to pH 2, changes the hydronium ion concentration by a factor of 10 and acids have a higher hydronium ion concentration than this value.

1. The pH scale is indeed a logarithmic scale that measures the acidity or basicity of a solution. It represents the negative logarithm (base 10) of the hydronium ion concentration [H3O+].

pH = -log[H3O+].

=> [H3O+] = 10^(-pH)

For pH 3, the hydronium ion concentration would be:

[H3O+] at pH 3 = 10^(-3)

For pH 2, the hydronium ion concentration would be:

[H3O+] at pH 2 = 10^(-2)

Factor = [H3O+] at pH 2 / [H3O+] at pH 3

= (10^(-2)) / (10^(-3))

= 10^(-2 + 3) = 10^1 = 10

2. Acids have a higher hydronium ion concentration [H3O+] than the value calculated above.

Therefore, the hydronium ion concentration [H3O+] changes by a factor of 10 when the pH changes from 3 to 2  and acids have a higher hydronium ion concentration than this value.

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Answer:

its a conductor

Explanation:

Conductors allow electricity to flow through them like metal wires

Answer: It is a conductor because a conductor allows electricity or heat to pass through and it is right because i took the quiz

Explanation

Kinetic energy is a modality of energy present in all moving bodies. According to the SI, its unit of measurement is the joule. Furthermore, this energy is a scalar quantity that has exclusively positive values.

Kinetic energy is proportional to the square of the body's velocity. Thus, if the speed of a body double, its kinetic energy will increase four times, if the speed of a body triple, then this increase will be nine times.

Answer

Kinect energy tells us how fast the reaction will proceed.

The phrase to indicate the flood mitigation technique it describes are:

Floodplain management – protects buildings in low-lying areas

stormwater management – reduces water runoff into streets, lawns, and other sites, and enhanced by the addition of urban green spaces.

Elevated structures-used mainly on the coast, raises structures above flood level.

Flood mitigation is the control and management of movement of the blood water.    

It includes flood gates and flood walls which manage the water of flood and prevent it from destroying building and homes.

There are different types of flood mitigation techniques for different areas.

Thus, Floodplain management – protects buildings in low-lying areas

stormwater management – reduces water runoff into streets, lawns, and other sites, and enhanced by the addition of urban green spaces.

Elevated structures-used mainly on the coast, raises structures above flood level.

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Flood mitigation manages and controls the flood water by removing inhabitants from the area.  Floodplain management protects buildings.

A flood mitigation is the control and management of the flood water by floodgates and floodwalls to prevent and protect the buildings and people.

The floodplain management of the mitigation technique involves the protection of low-lying buildings, stormwater management controls the flow of the floodwater flow in the streets and elevated structures are used in coastal regions to raise the level of the floodwater.

Therefore, different flood mitigation techniques are used to control and manage flood water.

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We require the equation to understand the process that occurs when X reacts with Y to form an ionic compound.The chemical equation for the formation of the ionic compound between X and Y would be: X + Y → XYwhere X represents the alkali metal in group I and Y represents a non-metal that is most likely in group VII. This equation represents the process of how the two elements react with each other to create an ionic compound.

Element X is found in group I of the periodic table, which means it belongs to the alkali metal group. Alkali metals are well-known for their reactivity, with the exception of lithium, which is the least reactive alkali metal. Alkali metals react with other elements to form ionic compounds. Let’s take a closer look at this process.Element X reacts with Element Y to create an ionic compound, which means that Element X becomes an ion in the process. Since Element X is an alkali metal, it has only one valence electron.

To form a positive ion, it loses this valence electron.Element Y, on the other hand, is probably a non-metal since it’s reacting with an alkali metal. Non-metals, unlike alkali metals, have a high electronegativity. As a result, they have a tendency to take electrons from other elements in order to complete their valence shells.

As a result, Element Y gains an electron in this instance.Since X loses its valence electron and Y gains an electron, X becomes a positive ion and Y becomes a negative ion. The resulting ionic compound is formed by the attractive forces between the positive and negative ions. The formula of the ionic compound is determined by the ratio of the ions present.

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Answer:

Gamma

Explanation:

This is because the prticles that are shown can be found in many gamma cancers which mean that that is from gamma