A current of 4.75 A4.75 A is passed through a Cu(NO3)2Cu(NO3)2 solution for 1.30 h1.30 h . How much copper is plated out of the solution

Answer:

a

Explanation:

It increases the reaction rate by lowering the activation energy for a reaction

The kinetic energy that the liberated electron has in eV based on the given values is :

10.28 eV.

A photoelectron's maximum kinetic energy is given by

                     Emax = hf - W

here given,

f = 3.62 x 10¹⁵ Hz

W = 4.70 eV

 by recalling the equation for a photoelectron's maximum kinetic energy with given values,

  Emax = hf - W

             = ((4.14 × 10⁻¹⁵eV.s)(3.62 x 10¹⁵ Hz)) - (4.70 eV)

             = 10.28 eV

As a result, we discovered that the maximum kinetic energy of electrons is 10.28eV.

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Answer:

b. Electrons have a mass of 1 amu

Explanation:

Mass of electron is 0.00055amu.

Charge= - 1.6×10^−19

By definition, the statement b. is false: Electrons haven't a mass of 1 amu. Electrons have a mass of 0.0005 amu.

All atoms are made up of subatomic particles: protons and neutrons, which are part of their nucleus, and electrons, which revolve around them.

Protons are positively charged, neutrons are neutrally charged, and electrons are negatively charged. Protons and neutrons have roughly the same mass, about 1.674×10⁻²⁴ g, which represents 1 atomic mass unit or amu. An electron has a mass of 9.11×10⁻²⁸ g, which represents 0.0005  amu.

So, the atomic nucleus is the small central part of the atom, with a positive electrical charge and in which most of the mass of the atom is concentrated.

In a neutral atom, the number of electrons is equal to the number of protons, and since they have a negative electrical charge, they compensate.

Then, the statement b. is false: Electrons haven't a mass of 1 amu. Electrons have a mass of 0.0005 amu.

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Explanation:

K has 19 electron and N has 7 electon

19 by 7 by 3

399

this is a chemical formula

The original volume that was occupied by the Fivonine gas is 318 mL.

According to the Boyle's law; as long as the temperature and volume of the gas remain constant, the law asserts that the pressure of a gas is inversely proportional to its volume, or that as volume falls, pressure increases, and vice versa.

We know that;

P1V1 = P2V2

Then;

P1 = 900 torr or 1.18 atm

P2 = 1.50 atm

V1 = ?

V2 = 250 mL

Then V1 = P2V2/P1

V1= 1.50 * 250/1.18

V1 = 318 mL

This is the original volume.

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Answer:

1. liquid, gas, and solid

2. Liquid, solid, and gas particles are different by volume, and shapes they take in containers. Solid is tightly packed, liquid takes the shape of anything, and gas has neither volume or shape

Explanation:

Hope this helps!

We are given –

\(\qquad\)\( \pink{\bf\longrightarrow { Molar \:mass \:of \: N_2:-} }\)

\(\qquad\)\( \bf \twoheadrightarrow 14\times 2 \)

\(\qquad\)\( \bf \twoheadrightarrow 28\)

\(\qquad\)____________________

Now,Let's calculate the number of moles present in 57.1 g of \( \bf N_2\)

\(\qquad\)\( \purple{\bf\longrightarrow { No \:of \:moles = \dfrac{Given \:mass}{Molar\: mass}}}\)

\(\qquad\)\( \bf \twoheadrightarrow \dfrac{57.1}{28}\)

\(\qquad\)\( \bf \twoheadrightarrow 2.04\: moles\)

__________________________________

the closest value is C, 85.

hope it helps!!!!

85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population. Therefore, the correct option is option C.

A population is the entire set of people in a group, whether that group is a country or a collection of people who share a certain trait. A population is the group of people where a statistical sample has been collected in statistics. Hence, a population is any collection of people who have something in common.

A statistically substantial chunk of a population, rather than the full population, may also be referred to as a sample. For this reason, the standard deviation, meaning standard error, of a statistical study of a sample from the full population must be disclosed. Only a population-wide analysis would have zero standard deviation. 85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population.

Therefore, the correct option is option C.

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Answer:

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.

Answer:

my answer I think is tetrahedral

The cost of 1 ton of chlorine is $212.88 and the cost of 1 ton of ammonia is $266.93.

Since cost is typically given in terms of moles, we must first calculate the number of moles of each chemical in one ton. To do this, we must know the molecular mass of each chemical. The molecular mass of chlorine is 70.906 g/mol and the molecular mass of ammonia is 17.030 g/mol. Thus, one ton of chlorine (1,000,000 g) contains 14,158.7 moles and one ton of ammonia (1,000,000 g) contains 58,822.2 moles. To calculate the cost per ton, we multiply the cost per mole by the number of moles in one ton. Thus, the cost of 1 ton of chlorine is $212.88 and the cost of 1 ton of ammonia is $266.93.

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Answer:

C

Explanation:

The simplest Organic compounds are made up of only Carbon and Hydrogen atoms only. Compounds of Carbon and Hydrogen only are called Hydrocarbons. The simplest Hydrocarbon is methane, CH4. This is the simplest member of a series of hydrocarbons.

The producing PCl5 would be to add reactants, increase volume, and use a hotplate. adding reactants will increase the concentration of reactants, leading to a faster reaction rate.

Increasing volume will also help shift the equilibrium towards the products side, as there will be more space for the reaction to occur. Additionally, using a hotplate will provide the necessary energy to break the bonds in the reactants and initiate the reaction. Removing reactants and decreasing volume would have the opposite effect, leading to slower reaction rates and lower yields of PCl5. Using an ice bath in options A and D would lower the temperature, slowing down the reaction rate and decreasing the yield of PCl5. Therefore, option C is the most suitable for producing PCl5.

F, which came after O on the periodic table, is the element with the greatest electronegative charge. As an element progresses through the family, its electronegativity tends to increase. Due to chlorine's bigger size than fluorine's, the electrons are drawn to the nucleus with less force because they are farther away. As a result, chlorine is less electron-negative than fluorine. Since the degree of electronegativity tends to grow as one moves up a group, carbon should be more electronegative than silicon.

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Yes, a reaction occurs when aqueous solutions of silver(I) acetate and potassium sulfide are combined. The reaction that takes place is a double displacement reaction, which involves an exchange of ions between the two compounds.

Step 1: Write down the chemical formulas for each compound:
Silver(I) acetate: AgC2H3O2
Potassium sulfide: K2S

Step 2: Identify the cations and anions in each compound:
Silver(I) acetate: Ag+ (cation) and C2H3O2- (anion)
Potassium sulfide: K+ (cation) and S2- (anion)

Step 3: Perform a double displacement reaction by exchanging the cations and anions:
Ag+ will combine with S2-, and K+ will combine with C2H3O2-

Step 4: Write the products of the reaction:
Ag2S (silver sulfide) and KC2H3O2 (potassium acetate)

Step 5: Determine the solubility of the products in water:
According to solubility rules, silver sulfide (Ag2S) is insoluble in water, whereas potassium acetate (KC2H3O2) is soluble.

Since one of the products, silver sulfide, is insoluble, it will precipitate out of the solution, confirming that a reaction occurs between the two compounds. The balanced chemical equation for this reaction can be written as:

2 AgC2H3O2 (aq) + K2S (aq) → Ag2S (s) + 2 KC2H3O2 (aq)

In summary, when aqueous solutions of silver(I) acetate and potassium sulfide are combined, a double displacement reaction occurs, resulting in the formation of silver sulfide (an insoluble precipitate) and potassium acetate (a soluble product). This confirms that a reaction takes place between the two compounds.

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The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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Chromosomes are formed inside the nucleus of a cell. They carry genetic information and are responsible for traits and characteristics passed down from one generation to the next. Chromosomes play a crucial role in cell division, and chromosomal abnormalities can lead to a variety of genetic disorders.

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Latent heat refers to energy absorbed or released during a change in physical state without a temperature change. Between 20ºN and 40ºN, the increased temperature may enhance evaporation from bodies of water, allowing more water molecules to transition from liquid to gas.

Based on the given information, latent heat refers to the energy absorbed or released by a substance during a change in its physical state without a change in temperature. In the context of evaporation, the process involves the transformation of a liquid into a gas state.

Between 20ºN and 40ºN, it appears that we are referring to a geographic region or latitude range. The specific conditions or context of this region are not mentioned, so it is unclear how it directly relates to latent heat or evaporation.

However, if we consider the general principles of evaporation, we can infer that in this temperature range, there may be a significant amount of liquid water present, such as oceans, lakes, or bodies of water. The increase in temperature can lead to an increase in the rate of evaporation.

As the temperature rises, the kinetic energy of water molecules increases, causing them to move faster. This increased movement and energy can overcome the intermolecular forces holding the liquid together, allowing more water molecules to escape the liquid surface and become water vapor in the atmosphere. This process is known as evaporation.

In summary, between 20ºN and 40ºN, the increase in temperature may result in an increased rate of evaporation from bodies of water due to the greater availability of thermal energy for water molecules to transition from the liquid to the gas phase.

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The 0.118 moles are the mass Iron(III) oxide reacts with carbon monoxide gas to form solid iron metal and carbon dioxide gas: Fe2O3+3CO→2Fe+3CO2.

Limiting and Excess Reactants:There are sorts of reactants which can be utilized in a chemical response process, those are the proscribing reactant and the extra reactant. There is continually a leftover quantity of the extra reactant after a response. The most quantity of merchandise that may be produced relies upon at the proscribing reactant.

First, we convert the loads of the reactants into moles the usage of their molecular weight:

Solving for moles of Fe2O3, nFe2O3,

nFe2O3=mFe2O3MWFe2O3=23.0g159.69gmolnFe2O3=zero.144molesSolving for moles of CO, nCO,nCO=mCOMWCO=15.4g28gmolnCO=zero.55molesIn figuring out the proscribing and extra reactants, we decide the moles required for every reactant if we used all of the given moles adjusted consistent with their mole ratio withinside the balanced response.

The moles ecess reactant =nCO−nCOx=zero.fifty five−zero.432=0.118 molThe mass of the extra reactant left is calculated the usage of its moles and molecular weight,

massexcessreactantleft=mCO×M.

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The set up to obtain the density is;

density = mass of NH\(_{3}\)/ V

Since density is an intense quality, it is independent of a substance's size or volume. No matter how big the sample is, it stays the same.

The units used for mass and volume determine the units of density. Density measurements are frequently expressed in terms of grams per cubic centimeter (g/\(cm^3\)) or kilograms per cubic meter (kg/\(m^3\)). Density for gases is frequently stated in terms of grams per liter (g/L) or kilograms per cubic meter (kg/\(m^3\)).

There are numerous scientific and practical applications for density. Since different materials have varying densities, it can aid in the identification of substances.

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Sure, here is a brief explanation of the difference between atoms, molecules, compounds, and mixtures in chemistry:

Atoms are the smallest unit of an element that can exist. They are made up of protons, neutrons, and electrons.

Molecules are groups of two or more atoms that are chemically bonded together. The atoms in a molecule can be of the same element, like in oxygen (O2), or of different elements, like in water (H2O).

Compounds are substances that are made up of two or more elements that are chemically combined. Compounds have a fixed composition, meaning that they always contain the same elements in the same proportions.

Mixtures are substances that are made up of two or more substances that are not chemically combined. The components of a mixture can be separated by physical means, like filtration or distillation.

Here is a table that summarizes the key differences between atoms, molecules, compounds, and mixtures:

| Property | Atom | Molecule | Compound | Mixture |

|---|---|---|---|---|

| Composition | Single element | Same element or different elements | Two or more elements | Two or more substances |

| Bonding | Not bonded | Chemically bonded | Chemically bonded | Not chemically bonded |

| Separation | Not possible | Not possible | Possible | Possible |

| Properties | Same as element | Same as elements or different | Different from elements | Same or different from components |

I hope this helps! Let me know if you have any other questions.

NATO is described as the international entity experiences have been driving a harmonious support activity in Kosovo - the Kosovo Power (KFOR) - since June 1999.

KFOR was laid out when NATO's 78-day air crusade against Milosevic's system was pointed towards stopping viciousness in Kosovo, was finished.

The North Atlantic Arrangement Association also known as (NATO) completed an aeronautical bombarding effort against the Government Republic of Yugoslavia during the Kosovo War.

NATO sent off an air crusade Activity Associated Power, in Walk 1999 in order to stop the compassionate disaster that was then occurring in Kosovo. The choice to intercede followed by an extended period of battling inside the territory and the disappointment of worldwide endeavors to determine the contention by discretionary means.

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The percentage yield of the  new production technique is 82.8%

Production is the procedure by which finished products are obtained form the raw materials. The production process involves the passing of raw materials through a certain procedure that involves the use of certain machines and equipment to give us the required products.

We are told in the question that there are three shifts;

Shift 1 produces 4562 grams

Shift 2 produces 5783 grams

Shift 3 produces 5247 grams

Average production from the three shifts = 4562 grams + 5783 grams +  5247 grams/3 = 5197 grams

The theoretical average yield is =  7000 grams + 7000 grams + 7000 grams/3 = 7000 grams

Now the percentage yield = actual yield/ theoretical yield * 100/1

percentage yield = 5197 grams/7000 grams * 100/1

percentage yield = 82.8%

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Cooking an egg is endothermic because the egg gains heat from the surrounding and Formation of snow is exothermic because water loses heat to the surroundings wh becomes snow.

Exothermic processes generate heat, which raises the temperature of the surrounding environment. Endothermic processes absorb heat and cool the environment."

Simply put, endothermic reactions absorb energy from their surroundings in the form of heat. An exothermic reaction, on the other hand, releases energy into the system's surroundings. Photosynthesis is a well-known example of an endothermic chemical reaction.

Thus, Cooking an egg is an endothermic process.

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Your question is incomplete, most probably your question was

Which of the following are exothermic and endothermic ?

cooking an egg is endothermic because the egg gains heat from the surrounding Formation of snow is exothermic because water loses heat to the surroundings wh becomes snow. Cooking an egg is exothermic because the egg loses heat to its surroundings.

It can be inferred that due to the relatively slight difference in electronegativity between carbon and hydrogen, and because of its symmetrical tetrahedral shape, methane CH4 is a nonpolar molecule.

Methane is a colorless, odorless gas that occurs naturally in large quantities and is also a byproduct of some human activities. Methane is the most basic hydrocarbon in the paraffin family and one of the most potent greenhouse gases. It has the molecular formula CH4.

Methane is the second most prevalent anthropogenic GHG after CO2, accounting for approximately 20% of world emissions. Compared to carbon dioxide, methane traps heat in the atmosphere 25 times more effectively.

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The volume of this graduated cylinder should be measured at the bottom of the meniscus and is denoted as option C.

This is also known as a measuring cylinder and it is referred to as a laboratory equipment which is in the shape of a narrow cylinder so as to prevent easy spilling of its content. It has marked lines with their accurate readings and is used to measure the volume of a liquid.

When reading the volume, it is important to note that the meniscus should be at eye level in order to get an accurate reading. This should be done by lowering the head in a way such that it is read at eye level which is at the bottom of the meniscus.

This is therefore the reason why option C was chosen as the most appropriate choice.

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nvm

nvm

nvm

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nvm

nvm

nvm

Answer:

Yes!

Explanation:

You certainly could form something. It would be written as H02 and it is called Hydroperoxyl. This is formed by the transfer of a hydrogen atom to an oxygen atom.

The mass of the precipitate is 8.74 g and the concentration of the calcium nitrate is 0.061 M.

The reaction is given by; 2AgNO3(aq) + CaCl2 (aq) ------>2AgCl(s) + Ca(NO3)2(aq)

Number of moles of AgNO3 = 195/1000 * 0.500 = 0.0975 moles

Number of moles of CaCl2 = 305/1000 * 0.100 = 0.0305 moles

If 2 moles of AgNO3 reacts with 1 mole of  CaCl2

0.0975 moles reacts with  0.0975 moles * 1 mole / 2 moles = 0.04875 moles

Thus CaCl2 is the limiting reactant.

1 mole of CaCl2 produces 2moles of AgCl

0.0305 moles produces 0.0305 moles * 2 moles/ 1mole

= 0.061 moles

Mass of precipitate =  0.061 moles * 143.32 g/mol

= 8.74 g

Now 1 mole of CaCl2  produces 1 mole of Ca(NO3)2

Total volume of solution = 195 ml + 305 ml = 500 ml or 0.5 L

Concentration of Ca(NO3)2 = 0.0305 moles/ 0.5 L

= 0.061 M

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