what are electrons. in your own words​

1.64 hours will be taken to plate out 8.90g of nickel.

Nickel (Ni), is a chemical element and Group 10 ferromagnetic metal with high resistance to oxidation and corrosion. Although nickel is more important either as a pure metal or in the form of alloys for its various home and industrial applications, it is also known for being silvery white, robust, and tougher than iron.

Iron and the element nickel extremely seldom co-occur in terrestrial and meteoric deposits. Baron Axel Fredrik Cronstedt, a Swedish chemist and mineralogist, separated the metal in 1751 after preparing an impure sample from an ore containing niccolite. Earlier, a similar ore of this kind was given the nickname Kupfernickel in honor of "Old Nick" and his naughty gnomes because, while looking like copper ore, it produced a brittle, foreign metal.

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This will have a substantial impact on the projected molecular weight of the unknown because the calculations will not account for the mass of the test tube and p-xylene. This indicates that the mass of the unknown that is actually used to determine the molecular weight will be less than the real value, leading to an incorrectly low computed molecular weight. This is done  by determining freezing point.

The addition of a solute to a solvent will decrease the freezing point (temperature) of the solvent. The decrease in freezing point (ΔTf) when a nonvolatile, nonionizing  solute is dissolved in a solvent is proportional to the molal concentration, m, of the solute present in the solution.

ΔTf IS Directly proportional to atomic mass (m)

ΔTf = Kf × m

Kf is a constant for a given solvent. Kf is called the molal freezing point depression constant and represents how many degrees the freezing point of the solvent will change when 1.00 mole of a nonvolatile nonionizing  solute dissolves in one kilogram of solvent.

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Molecular compounds are formed when atoms of different elements share electrons to form covalent bonds. On the other hand, the formation of ionic compounds involves the transfer of electrons from one atom to another.

Molecular compounds:

\(B_2H_6\\NOCI\\CH_3OH\\NF_3\)

Ionic compounds:

\(CsBr\\Ag_2SO_4\\Sc_2O_3\\LiNO_3\)

When determining whether a compound is molecular or ionic, we take into account the types of elements present and the nature of the bond. Covalent bonding, in which atoms share electrons, is the process used to form molecules. Examples of molecules on the list include diborane \((B_2H_6),\) nitrosyl chloride (NOCl), methanol \((CH_3OH)\) and nitrogen trifluoride\((NF_3)\). These nonmetal-based compounds typically have low melting and boiling points.

On the other hand, ions are formed when electrons are transferred between atoms to form an ionic compound. Cesium bromide, silver sulfate, scandium oxide, and lithium nitrate are some examples of ionic compounds on the list. These mixtures, which contain a cation of a metal and an anion of a nonmetal, usually have high melting and boiling points.

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We learned that k is adsorbed to negatively charged soil colloids by electrostatic attraction to three types of exchange sites or binding positions. The cation exchange sites are the most readily available to the soil solution.

The binding position that is readily available to the soil solution is the cation exchange sites. This is because the negatively charged soil colloids attract positively charged ions, known as cations, through electrostatic attraction. These cations are then exchanged with other cations in the soil solution, leading to the term "cation exchange sites."

The other two types of exchange sites are the anion exchange sites, which attract negatively charged ions, known as anions, and the inner sphere binding sites, which involve a direct bond between the metal ion and the soil colloid surface. However, the cation exchange sites are the most readily available to the soil solution.

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Answer:

Answers 1. An amide linkage between the carboxyl group of one amino acid and the amine group of the other amino acid. 2. An ester is a compound formed from the reaction of a carboxylic acid and an alcohol. ( I apologise, I cant figure out number 3.. )

A Keq value of 29 suggests that the products are strongly favored over the reactants at equilibrium, and the ratio of the concentration of products to the concentration of reactants is 29:1.

The equilibrium constant, Keq, for a chemical reaction is a measure of the relative concentrations of products and reactants at equilibrium. If the value of Keq for a reaction is greater than 1, it indicates that the products are favored at equilibrium, and if Keq is less than 1, it indicates that the reactants are favored. In the case of a Keq of 29, it suggests that the products are significantly favored over the reactants at equilibrium.

More specifically, the Keq value indicates the ratio of the concentration of products to the concentration of reactants at equilibrium. A Keq of 29 indicates that the concentration of products is 29 times greater than the concentration of reactants at equilibrium. This suggests that the reaction strongly favors the formation of products, and the equilibrium is shifted towards the products side.

It is important to note that the value of Keq is temperature-dependent and can change with changes in temperature. A decrease in temperature can cause the equilibrium to shift towards the reactants, while an increase in temperature can shift it towards the products. However, at any given temperature, a Keq value greater than 1 indicates that the reaction is proceeding towards the products side, and a Keq value less than 1 indicates that it is proceeding towards the reactants side.

In summary, a Keq value of 29 suggests that the products are strongly favored over the reactants at equilibrium, and the ratio of the concentration of products to the concentration of reactants is 29:1.

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Answer:

I guess 1-mole carbon dioxide contains 6.02 x 10^23 molecules.

False , The most abundant cation in intracellular fluid is potassium (K+), not sodium (Na+). Potassium ions are found in higher concentrations inside cells, contributing to the positive charge within the intracellular environment.

Sodium ions, on the other hand, are more abundant in extracellular fluid. The concentration gradient of sodium and potassium across the cell membrane plays a crucial role in various cellular processes, including the generation of action potentials and the maintenance of cell volume and osmotic balance.

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We first verify that the equation is balanced. We have 5 carbons (C), 2 sulfurs (S), and 4 oxygens (O) on each side of the reaction. So the reaction is balanced.

a) Now if we look at the reaction we can see that when 2 moles of SO2 react, 1 mole of CS2 is produced. That is, the ratio is 2 to 1. For each mole of SO2 half as many moles of CS2 will be produced.

So if we have 9.5 moles of SO2 we will have 9.5/2 moles, that is 4.75 moles of CS2.

Answer a) By reacting 9.50 moles of SO2 with an excess of it would be produced 4.75 moles of CS2.

Now, for the following parts of the question, we can apply the ideal gas law. This is because the reaction is in the gas phase and the law applies only to gases.

Where,

P= Pressure at STP = 1 atm

T= Temperature at STP = 273.15K

R= Ideal law constant = 0.08206 (atm L)/(mol K)

V= Volume of the gas

n= Numer of moles

b)We clear n and we replace the known values of SO2 to find the number of moles of SO2 that react.

Now, for each mole of SO2 that reacts we need 5/2 moles of C, that is 0.24x5/2=0.61 moles of C.

We use mass molar of C to calculate the grams.

Mass molar of C=12.01g/mol

Mass of C= Moles of C x Mass Molar

Mass of C= 0.61 mol x 12.01 g/mol = 7.37 g

So, To fully react 5.5 L of SO2 at STP we will need 7.37 g of C.

c)We apply the gas law again but this time we clear the volume.

We also take into account that for each mole of C, 4 moles of CO are produced, so if we have 20 moles of C we will produce 20x4=80 moles of CO.

So, from 20.0 moles of C at STP can be produced 1793.18 liters of CO

To make an E9 mixture 8657.14 gal of E7 should be mixed with 3000 gal of E10

Given to us is the amount of ethanol in the E10 mixture is 10% of 3000 gallons:

Ethanol in E10 = 10% × 3000 gal = 0.10 × 3000 gal = 300 gal

To solve this problem, we can set up an equation based on the amount of ethanol in each mixture.

Let x represent the amount of E7 mixture (in gallons) that needs to be added to the E10 mixture to obtain the desired E9 mixture.

The amount of ethanol in the E7 mixture is 7% of x gallons:

Ethanol in E7 = 7% ×  gal = 0.07 × gal

The resulting E9 mixture will contain 9% ethanol of the total volume of 3000 + x gallons:

Ethanol in E9 = 9% × (3000 + x) gal = 0.09 × (3000 + x) gal

According to the problem, the resulting E9 mixture contains 906 gallons of ethanol:

Ethanol in E9 = 906 gal

Now we can set up the equation:

Ethanol in E10 + Ethanol in E7 = Ethanol in E9

300 gal + 0.07x gal = 906 gal

Subtracting 300 gal from both sides:

0.07x gal = 606 gal

Dividing both sides by 0.07:

x = 606 gal / 0.07

x = 8657.14

Therefore, approximately 8657.14 gallons of E7 mixture should be mixed with 3000 gallons of E10 to make an E9 mixture.

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Complete question: Ethanol fuel mixtures have "E" numbers that indicate the percentage of ethanol in the mixture by volume. For example, E10 is a mixture of 10% ethanol and 90% gasoline. How much E7 should be mixed with 3000 gal of E10 to make an E9 mixture?

The value of ΔS (change in entropy) for the reaction must be greater than ΔH' (change in enthalpy) divided by 298 K, as the reaction is thermodynamically favorable under standard conditions at 298 K.

The thermodynamic favorability of a reaction at a given temperature can be determined by the Gibbs free energy change (ΔG) using the equation ΔG = ΔH - TΔS, where ΔH is the change in enthalpy, T is the temperature in Kelvin, and ΔS is the change in entropy.

For a reaction to be thermodynamically favorable (spontaneous) at a given temperature, ΔG must be negative. At constant temperature and pressure, ΔG is related to ΔH and ΔS by the equation ΔG = ΔH - TΔS.

Since the reaction is thermodynamically favorable under standard conditions at 298 K, ΔG must be negative. At this temperature, the term -TΔS dominates the equation, indicating that ΔS must be positive. This is because a negative ΔS value would lead to a positive value for -TΔS, which would make the reaction non-spontaneous.

Therefore, ΔS must be greater than ΔH divided by 298 K, as ΔH contributes to ΔG with a negative sign, and ΔS must have a positive value to ensure thermodynamic favorability of the reaction. The answer is A) greater than ΔH'/298 K.

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Answer:

They depend on people to water them and make sure they are by a window for sunlight

Explanation:

plants cant do these things by themselves

Answer:

Most flowering plants depend on animals to make the vital pollen-gran delivery. The remaining rely on wind and sometimes splashing raindrops to ferry pollen, but this is a less precise method. pollinating animals do the job for a reward: food, usually in the form of nectar.

Explanation:

Answer:

1) Assuming you mean Phosphorous Pentoxide (P4O10) there are 6.02x10^23 x 4 (number of P in P4O10) x 5 moles  = 1.38x10^25

2) Divide 1.0x10^20/6.02x10^23 = 1.7x10^-4 moles

3) The balanced equation would be 4P + 5O2 —-> P4O10. Starting with 8 moles of P 8/4 = 2. You generate 2 moles P4O10

4) CH4 has a molecular mass of 12+4 = 16. Starting with 100g/16g/mole = you have 6.25 moles of methane. As there are 4 atoms of hydrogen in each molecule of methane, you multiply 6.25 moles methane by 4 atoms H/molecule and get 25 moles of hydrogen or 1.505e25 atoms of hydrogen

Explanation:

Answer:

hey mate your answer is

D ALL OF THESE

HOPE IT HELPS YOU

To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.

So, option d. is correct.

Sedimentary rocks are created by the accumulation and deposition of mineral and organic particles just at earth's surface, followed by cementation. The processes that enable these particles that settle in place are referred to as sedimentation.

To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.

So, option d. is correct.

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The pH of 1 X 10-2 M HCN acid is 5.7

D) between 4 and 7

HCN is weak acid dissociate as

HCN  + H2O   \rightleftharpoons  H3O+  +  CN-

Ka = [CN- ][H3O+] / [HCN]

but  [CN- ] = [H3O+] = x

Ka = [x][x] / [HCN]

Substitute the value in equation

4.0X 10-10 = [x]2/ 1 X 10-2

[x]2 = 4.0X 10-10 X1 X 10-2  = 4.0 X 10-12

[x] = 2.0 X 10-6 M

Concentration of H3O+ = 2 X 10-6 M

pH = - log[H3O+]

pH = - log (2 X 10-6)

pH = 5.7

Prussic acid, also known as hydrogen cyanide, is a chemical substance with the formula HCN and the structural formula HCN. It is a colourless, incredibly poisonous, and flammable liquid that boils at 25.6 °C (78.1 °F), just slightly above room temperature.

Industrial-scale HCN production makes it a highly prized precursor to a wide range of chemical compounds, from pharmaceuticals to polymers. Production of potassium cyanide and adiponitrile, which are used in mining and plastics, respectively, has large-scale applications. Due to its volatile nature, it is more toxic than cyanide compounds that are solid.

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Answer: D

Explanation:

I just did it

Genetic diversity is produced by sexual reproduction, which gives a population a variety of appearances. The following paragraph contains the necessary information regarding genetic diversity.

It is possible for organisms to adapt to changing environmental conditions and prevent inbreeding by maintaining significant genetic variety. When there are limited, isolated populations, inbreeding takes place, which might make a species less able to endure and procreate.

Genetic diversity is the range of different hereditary traits within a species. There would be several people with a wide range of diverse traits in such a species with significant genetic diversity. For a community to adapt to shifting surroundings, genetic variety is essential.

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answer :

this is the structure if you want it

The net operating income would be $1,880. To calculate this, we determined the increase in variable costs and advertising spending. Then, we calculated the total increase in expenses and subtracted it from the contribution margin based on the increase in unit sales.

To calculate the net operating income, follow these steps:

Step 1: Calculate the increase in variable costs:

Increase in variable costs = Variable cost per unit x Increase in unit sales

Variable cost per unit = $1

Increase in unit sales = 170 units

Increase in variable costs = $1 x 170 units = $170

Step 2: Calculate the increase in advertising spending:

Increase in advertising spending = $1,350

Step 3: Calculate the total increase in expenses:

Total increase in expenses = Increase in variable costs + Increase in advertising spending

Total increase in expenses = $170 + $1,350 = $1,520

Step 4: Calculate the net operating income:

Net operating income = Contribution margin - Total increase in expenses

Contribution margin is the difference between total sales revenue and total variable expenses.

Given that the sales volume is 1,000 units, you need to calculate the contribution margin per unit.

Contribution margin per unit = Total sales revenue per unit - Total variable expenses per unit

To calculate the total sales revenue per unit, divide the total sales revenue by the sales volume.

Total sales revenue = $50,000 (given)

Sales volume = 1,000 units (given)

Total sales revenue per unit = $50,000 / 1,000 units = $50

To calculate the total variable expenses per unit, divide the total variable expenses by the sales volume.

Total variable expenses = $30,000 (given)

Total variable expenses per unit = $30,000 / 1,000 units = $30

Contribution margin per unit = $50 - $30 = $20

Now, calculate the net operating income:

Net operating income = Contribution margin per unit x Increase in unit sales - Total increase in expenses

Net operating income = $20 x 170 units - $1,520

Net operating income = $3,400 - $1,520 = $1,880

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The percent yield of carbon disulfide is 37.5% if the reaction of 43.7 g of carbon produces 34.8 g of carbon disulfide.

To calculate the percent yield of carbon disulfide (CS₂), we need to compare the actual yield of CS₂ obtained from the reaction to the theoretical yield that would be obtained if all of the carbon reacted to form CS₂. The percent yield is then calculated using the following formula;

Percent yield =(actual yield/theoretical yield) x 100%

First, we need to calculate the theoretical yield of CS₂ based on the amount of carbon used in the reaction. Balanced chemical equation for the reaction is;

C + 2S → CS₂

From this equation, we can see that the molar ratio between carbon and CS₂ is 1:1. Therefore, the number of moles of CS₂ that can be produced from 43.7 g of carbon is;

moles of CS₂ = moles of C = mass of C / molar mass of C

= 43.7 g / 12.01 g/mol

= 3.637 mol

Since the molar ratio between carbon and CS₂ is 1:1, the theoretical

yield of CS₂ would be 3.637 mol.

Next, we need to calculate the actual yield of CS₂ obtained from the reaction, which is given as 34.8 g.

Now we can use the formula above to calculate the percent yield;

Percent yield =(actual yield/theoretical yield) x 100%

= (34.8 g / (3.637 mol x 76.14 g/mol)) x 100%

= 37.5%

Therefore, the percent yield of CS₂ is 37.5%.

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There are 64g grams of oxygen are in a sample of carbon dioxide (CO₂) that has 24 grams of carbon.

First, carbon and oxygen combine to create CO₂as shown below.

C + O₂ => CO₂

The equation states that one mole of carbon combines with one mole of oxygen to produce one mole of carbon dioxide.

Since C's molar mass is 12 g/mol and O's is 16 g/mol

A mole of (C) weighs 12g.

O₂ is composed of 16(2) = 32g per mole.

As a result, 24g of C would equal 24 32 / 12.

= 768/12

= 64g

Therefore, if there was 24g of carbon, there would be 64g of oxygen.

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Answer: Science and Mathematics- Anthropologist, Meteorologist

Engineering and technology- Fuel Cell Technician, Computer programmer, electrical Drafter, Civil Drafter

Answer:

i have the same question  

Explanation:math and science is the meteorologs and the  anthropologist

The spontaneity of a process is determined by the changes in enthalpy (ΔH) and entropy (ΔS).  Option A is answer.

If a process has a negative change in enthalpy (ΔH < 0) and a negative change in entropy (ΔS < 0), it will generally be nonspontaneous. This means that the process does not occur spontaneously or without external intervention. For a process to be spontaneous, it typically requires a favorable combination of a negative change in enthalpy (exothermic) and a positive change in entropy (increased disorder).

In the given scenario, the negative change in enthalpy and negative change in entropy work against spontaneity, indicating that external factors, such as energy input or favorable conditions, are needed for the process to occur.

Option A is answer.

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In this reaction, sodium reacts with methanol to form sodium methoxide (NaOCH3) and hydrogen gas (H2).

Based on the given terms, it seems that you are looking for the product and mechanism of a reaction involving sodium (Na) and methanol (CH3OH).

In this reaction, sodium reacts with methanol to form sodium methoxide (NaOCH3) and hydrogen gas (H2). The reaction is as follows:

2Na + 2CH3OH → 2NaOCH3 + H2

The mechanism for this formation involves sodium donating an electron to methanol, causing the O-H bond in methanol to break. As a result, sodium bonds with the oxygen atom (forming NaOCH3) and hydrogen gas is released.

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Answer:

the answer is homologous

Hope you have a good day :)

Le Chatelier's principle predicts that if NH3 is introduced to the reaction, the equilibrium will move towards products (P) to partially balance the addition of reactant.

Since the concentration of the product will decrease if NO is eliminated from the reaction, the equilibrium will likewise change in favour of the products (P). Water being a product, the addition of H2O would change the reaction's direction towards reactants (R).

The equilibrium would shift towards reactants (R) if O2 were taken out of the process to make up for its loss. As the temperature rises, the equilibrium will move in favour of the reactants (R), or endothermic reactions. Reduced pressure will cause the equilibrium to shift in favour of the side that contains more gas molecules, in this example, towards products.

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Neutral atoms of all isotopes of a given element have the same number of protons and neutrons.

All the isotopes of the same element consists of the same number of protons, which defines the element.

Depending on the neutron count, different isotopes can exist . This is  because electrons are negatively charged and they can counterbalance the positive charge of protons. Also, they are present in equal numbers in neutral atoms of the same element.

Mass number is formed from the addition of protons and neutrons, which varies between isotopes. An isotope's mass can differ between different isotopes since it depends on its mass number and the masses of the particles that it is formed from.

However, the masses of various isotopes of the same element are extremely close. Hence, this can be challenging to distinguish without the help of specialized tools.

Thus, option (a) is correct.

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True, the side chain of an amino acid differentiates one amino acid from another.

Amino acids are the building blocks of protein, which is a macronutrient essential for the growth and repair of body tissues, among other things.

The side chain of an amino acid distinguishes it from other amino acids. Amino acids are organic compounds that have two functional groups: an amino group (-NH2) and a carboxyl group (-COOH). They can be divided into two categories: non-essential amino acids, which are made by the body, and essential amino acids, which must be obtained from food.

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