90 POINTS FOR A SCIENCE PROJECT.
For this assignment, you will research two land resources that are used to meet the energy needs of the
nation. You will compare these two sources using cost-benefit analysis. Based on your analysis, you will
determine which energy source is better. You will then write a paper to share the information you
researched, your analysis, and your conclusion.
In 2015, the United States produced 89 quadrillion British thermal units (Btu) of energy from different
sources. Coal accounted for 21% of this production, and 32% is from natural gas. The production and
development of these resources involve costs. Coal and natural gas extraction and production also have
environmental and human health implications.

Answers

Answer 1

Growth in the world's population and economy, coupled with rapid urbanisation, will result in a substantial increase in energy demand over the coming years. The United Nations (UN) estimates that the world's population will grow from 7.6 billion in 2017 to 9.7 billion by 2050. The process of urbanisation – which currently adds a city the size of Shanghai to the world's urban population every four months or so – will result in approximately two-thirds of the world's people living in urban areas by 2050 (up from 55% in 2018). The challenge of meeting rapidly growing energy demand, whilst reducing harmful emissions of greenhouse gases, is considerable. In 2019 global energy-related carbon dioxide emissions rose to 33.3 Gt, the highest on record, and about 45% above the total in 2000 (23.2 Gt).Electricity demand growth has outpaced growth in final energy demand for many years. Increased electrification of end-uses – such as transport, space cooling, large appliances, ICT, and others – are key contributors to rising electricity demand. The number of people without access to electricity has fallen substantially, and is now below one billion. However, despite significant progress, over 11% of the world's population still lacks access, mostly in rural areas.Aside from the challenges of meeting increasing demand and reducing greenhouse gas emissions, cleaner air is a vital need. According to the World Health Organization (WHO), air pollution is the world's largest environmental risk. WHO estimates that about seven million people die prematurely as a result of air pollution. Much of the fine particulate matter in polluted areas arises from industrial sources such as power generation or from indoor air pollution which could be averted by electricity use.Studies have repeatedly shown that nuclear energy is a low-emitting source of electricity production in general. It is also specifically low-carbon; emitting among the lowest amount of carbon dioxide equivalent per unit of energy produced when considering total life-cycle emissions. It is the second largest source of low-carbon electricity production globally (after hydropower), and provided about 30% of all low-carbon electricity generated in 2018. Almost all reports on future energy supply from major organisations suggest an expanded role for nuclear power is required, alongside growth in other forms of low-carbon power generation, to create a sustainable future energy system.In June 2019 the OECD’s International Energy Agency (IEA) published a report, Nuclear Power in a Clean Energy System, which concluded that a failure to invest in existing and new nuclear plants in advanced economies would make global efforts to transition to a cleaner energy system drastically harder and more costly.

Answer 2

Answer:

Explanation:

Global population and economic growth, coupled with rapid urbanization, will lead to a significant increase in energy demand in the coming years. The United Nations (UN) predicts that the world population will grow from 7.6 billion in 2017 to 9.7 billion in 2050. By 2050, about two-thirds of the world's population will live in urban areas, due to an urbanization process that currently adds a city the size of Shanghai to the world's urban population about every four months. (up from 55% in 2018). The challenge of meeting rapidly growing energy demands while reducing harmful emissions of greenhouse gases is significant. In 2019, global energy-related carbon dioxide emissions increased to 33.3 Gt, a record high and nearly 45% higher than in 2000 (23.2 Gt). Electricity demand has grown faster than final energy demand over the years. Increasing electrification of end-users such as transportation, cooling, large appliances and ICT contributes significantly to the increase in electricity demand. The number of people without electricity has dropped significantly and now he is below 1 billion. However, despite significant progress, more than 11% of the world's population is still inaccessible, most of them living in rural areas. Aside from the challenges of meeting growing demand and reducing greenhouse gas emissions, clean air is essential. According to the World Health Organization (WHO), air pollution is the world's biggest environmental risk. WHO estimates that about 7 million people die prematurely as a result of air pollution. Much of the particulate matter in polluted areas comes from industrial sources such as power generation and indoor air pollution, which can be avoided by using electricity. Research has repeatedly shown that nuclear power is generally a low-emission power source. It is also particularly low carbon. It has one of the lowest CO2 equivalents per unit of energy produced when considering full life cycle emissions. It is the second largest source of low-carbon electricity generation in the world (after hydropower), providing about 30% of all low-carbon electricity generation in 2018. Nearly all reports on future energy supply by major organizations point to the growing role of nuclear power, along with the growth of other forms of low-carbon electricity generation necessary to build a sustainable future energy system. there is Global efforts to transition to cleaner energy systems will be significantly more complex and costly.


Related Questions

Calculating an equilibrium composition Consider the following reaction in a closed vessel at a pressure of 1.0 atm and to ature of 500 K isobutane + 1-butene=2,2,3-trimethylpentane T + B P (a) Dets equ (b) Set reas (c) Con fro The standard Gibbs energy and enthalpy changes for this reaction at 500 K are AG - -4.10 kcal/mol, AH -20.11 kcal/mol. (a) Determine the equilibrium composition for this system for an initial equimolar mixture of isobutane and butene. What assumptions did you make?

Answers

At equilibrium, 0.313 moles of isobutane react with 0.313 moles of butene to form 0.626 moles of 2,2,3 trimethylpentane, and the mole fractions of isobutane and butene in the system are 0.313 and 0.687, respectively.

To determine the equilibrium extent of reaction and composition for the given system, we need to use the thermodynamic equilibrium constant, Kp. At constant temperature and pressure, the equilibrium constant can be written as:

Kp = exp(-ΔG* ÷ RT)

Where R is the gas constant and T is the temperature in Kelvin. Using the given value of ΔG* and the ideal gas law, we can calculate the equilibrium constant:

Kp = exp(4.10 kcal/mol ÷ (1.9872 cal/mol-K * 500 K)) = 7.78

Therefore, the equilibrium extent of the reaction is:

E = 2x ÷ (x + 1) = 2x ÷ (total moles)

To find the composition of the system at equilibrium, we can use the mole balance equation and the ideal gas law. Let y₁ and y₂ be the mole fractions of isobutane and butene, respectively, at equilibrium. Then, we have:

y₁ + y₂ = 1

And the mole balance equation for isobutane is:

x ÷ (x + 1) = y₁ ÷(1 - y₂)

Using the ideal gas law, we can express the mole fractions in terms of the partial pressures of the components:

y₁ = P₁ ÷ P

y₂ = P₂ ÷ P

where P1 and P2 are the partial pressures of isobutane and butene, respectively, and P is the total pressure of the system. Then, using the given initial conditions of the equimolar mixture and the ideal gas law, we can find the partial pressures of the components:

P₁ = P₂ = (1 ÷ 2) × P = 0.5 atm

y₁ = 0.313, y₂ = 0.687

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The complete question is:

Consider the following reaction in a closed vessel at a pressure of 1.0 atm and temperature of 500 K,

isobutane + 1-butene ⇄ 2,2,3 trimethylpentane

The standard Gibbs energy and enthalpy changes for the reaction are:

ΔG* = - 4.10 kcal/mol

ΔH* = -20.11 kcal/mol.

Determine the equilibrium extent of reaction, E (mols reacting), and the composition (in mole fractions) for this system for an initial equimolar mixture of isobutane and butene. Assume this mixture behaves as an ideal gas mixture.

Part BCalculate the molar mass for Mn3O4, an oxide of manganese.Express your answer to five significant figures.

Answers

To solve this question, we need to know the molar mass of Mn and O. We can look for it at the periodic table:

Mn = 54.938044 g/mol

O = 15.999 g/mol

Now, we multiply each molar mass by the number of atoms of each element in the compound Mn3O4 and sum the result.

There are 3 atoms of Mn and 4 atoms of O.

So:

(3x54.938044) + (4x15.999) = 228.81 g/mol

Answer: 228.81 g/mol

8. Look at the following electronic configurations of elements and predict which element has the highest electron affinity? Explain your answer. [ /3A]
a. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
b. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
c. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
d. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
e. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2

Answers

Answer:

e, beacause that is the higher voltage

Explanation:

calculate

A voltaic cell is constructed in which the following cell reaction occurs. the half-cell compartments are connected by a salt bridge. ag (aq) cr2 (aq) ag(s) cr3 (aq)

Answers

The cell reaction is Ag(aq) + Cr3+(aq) → Ag(s) + Cr2+(aq). The standard cell potential is 0.742 V.

A voltaic cell is a device that utilizes a spontaneous chemical reaction to generate electricity. A half-cell is a component of the voltaic cell that contains either an oxidizing or reducing agent.

The salt bridge is used to connect the two half-cells and prevent mixing of the solutions.The given cell reaction is Ag(aq) + Cr3+(aq) → Ag(s) + Cr2+(aq).

This reaction takes place in two half-cells.

In one half-cell, Ag is oxidized to Ag+.

In the other half-cell, Cr3+ is reduced to Cr2+.

The cell potential, Ecell, can be calculated using the Nernst equation:

Ecell = E°cell - (RT/nF)

lnQwhere E°cell is the standard cell potential,

R is the gas constant,

T is temperature in kelvin,

n is the number of electrons transferred in the reaction,

F is the Faraday constant, and

Q is the reaction quotient.

The standard cell potential for the given cell reaction is 0.742 V.

Therefore, the cell generates 0.742 volts of electrical potential difference.

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calculate the boiling point of a solution that contains 0.900 mole of K3 PO4 dissolved in 2750g of water.

Answers

The solution was calculated to have a boiling point of 100.167 °C.

How to calculate boiling point?

To calculate the boiling point of the solution, use the equation:

ΔTb = Kb × m

where ΔTb = change in boiling point, Kb = boiling point elevation constant for water (0.512 °C/m), and m = molality of the solution.

First, calculate the molality of the solution:

molality (m) = moles of solute / mass of solvent (in kg)

mass of solvent = 2750 g / 1000 = 2.75 kg (conversion to kg)

moles of solute (K3PO4) = 0.900 moles

m = 0.900 / 2.75 = 0.327 mol/kg

Now calculate the boiling point elevation:

ΔTb = Kb × m = 0.512 °C/m × 0.327 mol/kg = 0.167 °C

Finally, calculate the boiling point of the solution:

boiling point of solution = boiling point of pure solvent + ΔTb

The boiling point of pure water is 100 °C, so:

boiling point of solution = 100 °C + 0.167 °C = 100.167 °C

Therefore, the boiling point of the solution is 100.167 °C.

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If you have a volume of 10 mL and a mass of 100 kg, what is the density?

Answers

Destiny 100/10=10kg/ml

explain how shielding contributes to the atomic radius trend within a group.

Answers

Shielding is a term used to describe the ability of inner electrons to shield or reduce the effective nuclear charge (Zeff) experienced by the valence electrons in an atom.

The number of valence electrons and the outermost energy level (also known as the primary quantum number or n value) are the same for all elements in a periodic table group (or column). This indicates that the valence electrons in all of the group's atoms have comparable energy levels and shielding effects from the inner electrons. As a result, the number of energy levels, or the primary quantum number (n), and the shielding effect of the inner electrons dictate the trend in atomic radius within a group.

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What is the wavelength of waves that have a frequency of 2.20 x 10 −4 Hz

Answers

Answer:

1.36 x 10^12 m

Explanation:

This is because the equation for wavelength is a modification of c = λf.

c is the speed of light, which is 3.00 x 10^8 m/s

2.20 x 10^-4 Hz is the frequency (f)

so to find λ, which is the wavelength, you would have to divide c by f. You would write it out like 3.00 x 10^8 m/s divided by 2.20 x 10^-4 1/s (Hz is a unit whose time is measured in seconds). The s would cancel out, you would divide 3.00 by 2.20, and you would apply the rule of exponents to the 10^8 power divided by 10^-4 for 10^12 power because the -4 is the denominator, and because it is negative, instead of subtracting the exponent you would add it

Which of the following represents a double-displacement reaction?
a. ABC ➡️AB +C
b. A+B ➡️AB
c. AB + CD➡️AD + CB
d. A + BC ➡️AC + B

Answers

It’s C! Here’s an equation you can refer to that’ll help in the future!
AX + BY —> AY + BX
The first letter of the first letter of the 1st reactant and the last letter of the 2nd reactant go together to make a new product. The second letter of the 2nd reactant and the second letter 1st reactant go together.

Why are noble gases called "safe" gases?

Answers

Answer:

Noble gases are called "safe" gases because they are inert.

General Formulas and Concepts:

Reading a Periodic TableChemical Properties of Noble Gases

Explanation:

Because Noble Gases have filled their outer shell electrons fully, they tend not to form compounds with other elements or react with others to produce another compound.

Take Ne (neon) for instance. It's electron configuration is 1s²2s²2p⁶. The outer most shell is the 2p sublevel, and according quantum numbers, the 2p sublevel only has 3 spaces for 2 electrons each that it can hold. Therefore, Ne has a full outer shell and no electron spots to create a bond with other elements.

how many moles of gas would exert a pressure of 2.5 atm at a volume of 7.2L and a temperature of 468k? A-0.23moles B-0.36moles C-0.49moles D-0.58moles

Answers

A is the answer but always look it up first

Why is health needed for developed?​

Answers

Answer:

Improvised health has been one of the main benefits of development. As humans, we need the primary aspects of life to keep us going. (food, water, oxygen) But scientificly we need health that will improve health. and Improved Health has been one of the main benefits of development. This benefit results partly from an increase in income and partly from scientific progress in the fight against disease and disability.

How many moles of Al³+ are there in 3 moles of Al₂(SO4)3?

Answers

The moles of Al³+ are there in 3 moles of Al₂(SO4)3 is 0.14 mole.

What is mole ?

The International System of Units uses the mole (symbol: mol) as the unit of material quantity. How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that material. It is specified that the mole contains exactly 6.022140761023 elementary entities.

The mole, which is denoted by the symbol "mol," is the volume of a system that includes as many elementary particles as there are atoms in 0.012 kilogrammes of carbon 12.

No. of moles = mass / molecular mass

Given, mass of Al2(SO 4) 3 = 60g

Molecular mass of Al2(SO 4) 3

= 2 × 27 +3 ( 32 + 4 × 16 )

= 342g

moles of Al³+ = 60 /   342

= 0.14 mole

Thus, The moles of Al³+ are there in 3 moles of Al₂(SO4)3 is 0.14 mole.

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what does Le châteliers principle state?

Answers

Le Chatelier’s principal states: “A change in one of the variables that describe a system at equilibrium produces a shift in the position of the equilibrium that counteracts the effect of this change.”

Hope this helps!

Choose the BEST answer from the four options A, B, C, or D: Due to which property of LPG are we asked to close the valve of the gas cylinder, in the kitchen in our homes? A. It is inflammable B. It is a liquid C. It has a bad smell D. It is a mixture

Answers

Answer:

A

Explanation:

We are usually asked to close the valve of the gas cylinder in our various kitchens at home due to the inflammable property of the Liquified Petroleum Gas.

Without closing the valve, the LPG would diffuse into our homes, and any form of spark would cause an explosion and lead to a fire. Lives and properties could be lost in the process.

The correct option is A.

Question 6 of 10
What are unit conversions used for?
OA. Unit conversions express the fractional size of something.
B. Unit conversions are used to write very large numbers.
OC. Unit conversions associate a number with its units.
D. Unit conversions express an amount in a different unit.

Answers

Unit conversions used for unit conversions are used to write very large numbers.

Unit conversion is the process of converting the measurement of a given amount between various units, often by multiplicative conversion factors that alter the value of the measured quantity without altering its effects. The term "conversion" describes the procedure of altering or converting a word's class without altering its form.

Even if it was solely used as a noun in the past, the term "email" is now a verb in Modern English. The measurement's unit is crucial. We can learn about a thing's property through measuring. It provides information about an object's weight or length. We can assign a number to that property using a measurement.

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Unit conversions used for unit conversions are used to write very large numbers.

Unit conversion is the process of converting the measurement of a given amount between various units, often by multiplicative conversion factors that alter the value of the measured quantity without altering its effects. The term "conversion" describes the procedure of altering or converting a word's class without altering its form.

Even if it was solely used as a noun in the past, the term "email" is now a verb in Modern English. The measurement's unit is crucial. We can learn about a thing's property through measuring. It provides information about an object's weight or length. We can assign a number to that property using a measurement.

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If the sample has a total mass of 5.76 g and contains 1.79 g k, what are the percentages of kbr and ki in the sample by mass

Answers

The percentages of KBr and KI  in the sample by mass is 80.68 and 19.32 % respectively.

What is Molar Mass ?

Molar mass is defined as the mass contained in 1 mole of sample.

It is given that

the sample has a total mass of 5.76 g contains KBr and KI

and contains 1.79 gm of K is present

what is the percentage of KBr and KI in the sample

Molecular weight of K = 39

Molecular weight of Br = 79.9

Molecular weight of I = 126.9

In KBr the mass percentage of K is 39/(39+79.9) = 32.89%

In KI the mass percentage of K is 39/(39+126.9) = 23.5%

Let the mass of KBr present in the sample is x

K will be 0.3289 x

and let the mass of KI present be y

K will be 0.235y

x +y =5.76

0.3289x+0.235y = 1.79

0.0939y = 0.1045

y = 1.1125 gm

x = 5.76-1.1125

x = 4.6475 gm

% of KBr = (4.6475/5.76  )*100 = 80.68 %

% of KI = (1.1125/5.76) *100 = 19.32%

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What mass, in grams, of H₂ can be produced from 35.0 g Na?
2 Na + 2 H₂O → 2 NaOH + H₂
6.15 g H₂
3.08 g H₂
1.54 g H₂
4.39 g H₂

Answers

The balanced chemical equation shows that 2 moles of Na produce 1 mole of H₂. First, we need to calculate the number of moles of Na in 35.0 g Na:

molar mass of Na = 23.0 g/mol
moles of Na = mass/molar mass = 35.0 g / 23.0 g/mol = 1.52 mol

From the balanced equation, 2 moles of Na produces 1 mole of H₂. Therefore, 1.52 moles of Na produces:

1.52 mol Na × (1 mol H₂/2 mol Na) = 0.76 mol H₂

Finally, we can calculate the mass of H₂ produced using its molar mass:

molar mass of H₂ = 2.02 g/mol
mass of H₂ = moles of H₂ × molar mass of H₂ = 0.76 mol × 2.02 g/mol ≈ 1.54 g

Therefore, the mass of H₂ that can be produced from 35.0 g of Na is approximately 1.54 g. Answer: 1.54 g H₂

Balance this chemical equation

__K+__H2O>>> __KOH+__H2

Answers

Answer:

2K+2H2O=2KOH+H2

Explanation:

Try to ensure there is same number of reactants as products

A fire that is burning wood will release water vapor and carbon dioxide
true or false?

Answers

Answer:

true.

Explanation:

the half-life of radioactive chemical 'x' is 10 minutes. if you initially had 200 grams of the substance, how many grams of the substance would you have after 30 minutes?

Answers

After 30 minutes, the amount of radioactive substance 'X' remaining can be calculated using the concept of half-life. With a half-life of 10 minutes and an initial amount of 200 grams, the remaining amount of the substance would be 25 grams.

The half-life of a radioactive substance is the time it takes for half of the initial amount to decay. In this case, since the half-life of substance 'X' is 10 minutes, after 10 minutes, half of the initial 200 grams, which is 100 grams, would remain.

After another 10 minutes (20 minutes in total), half of the remaining 100 grams, which is 50 grams, would remain. Finally, after 30 minutes, half of the remaining 50 grams, which is 25 grams, would be left. Therefore, after 30 minutes, you would have 25 grams of the substance remaining.

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Which statement describes a mixture of salt and water? Chose Correct answer
Homogeneous mixture: the parts are uniformly mixed
Heterogeneous mixture: the parts are uniformly mixed
Homogenous mixture: the parts are not uniformly mixes

Answers

Answer:

Homogeneous mixture is the answer for this

Try these conversions, using the ladder method.
10) 2000 mg = g
11) 5 L = mL
12) 104 km = m
13) 198 g = kg
14) 2500 m = km
15) 75 mL = __ L
16) 65 g = __ mg
17) 5.6 kg == __ g
18) 8 mm= __ dam
19)5.6m= __ em
20) 120 dag = __ dg

Answers

The conversions are 2000 mg to g id 2 g, 5 ml to l is 0.005 l, 104 km to m is 104000 m, 198 g to kg is 0.198 kg, 2500 m to km is 2.5 km, 75 ml to l is 0.075 l, 65 g to mg is 65000 mg, 5.6 kg to g is 5600 g,8 mm to dm is  0.0008 dm, 5.6 m to cm is 560 cm and 120 dag to dg is  12000 dg.

What is conversion?

Conversion is defined as a client action that is performed on your website and is tracked by conversion rate.

1 mg = 0.001 g

1 L = 1000 ml

1 km = 1000 m

1 g = 0.001 kg

1 mm = 0.0001 dm

1 m = 100 cm

1 dag = 100 dg

Thus, the conversions are 2000 mg to g id 2 g, 5 ml to l is 0.005 l, 104 km to m is 104000 m, 198 g to kg is 0.198 kg, 2500 m to km is 2.5 km, 75 ml to l is 0.075 l, 65 g to mg is 65000 mg, 5.6 kg to g is 5600 g,8 mm to dm is  0.0008 dm, 5.6 m to cm is 560 cm and 120 dag to dg is  12000 dg.

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In an aqueous chloride solution cobalt(II) exists in equilibrium with the complex ion CoCl42-. Co2 (aq) is pink and CoCl42-(aq) is blue. If we represent the equilibrium as:...Co2 (aq) 4Cl-(aq) CoCl42-(aq) We can conclude that: 1. This reaction is: A. Exothermic B. Endothermic C. Neutral D. More information is needed to answer this question. fill in the blank 2 2. When the temperature is increased the equilibrium constant, K: A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question. fill in the blank 3 3. When the temperature is increased the equilibrium concentration of Co2 : A. Increases B. Decreases C. Remains the same D. More information is needed to answer this question.

Answers

The given reaction is exothermic. 1- Option A, 2- Option A, 3- Option A.

The equilibrium reaction is expressed as:

CoCl₄²⁻(aq) <--> Co²⁺(aq) + 4 Cl⁻(aq) + heat

There is a predominance of pink color which means the product formation is favored. So the reaction is exothermic.

1. This reaction is exothermic. So option A is correct.

2. When the temperature is decreased the equilibrium constant, K:

equilibrium constant = [products] / [reactants] = [Co²⁺][Cl⁻⁴ / [CoCl₄²⁻]

temperature is decreased then the concentration of Cl- and Co²⁺ increases and so K increases.

A. Increases.

3. When the temperature is increased the equilibrium concentration of Co²⁺: temperature is decreased then the equilibrium shifts in the right direction.

A. Increases.

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Complete the passage:

During the process of polymerization____
combine by sharing electrons. This process forms a
,____which is made of repeating subunits. The resulting material is used in a variety of ways.

Answers

Answer:

During the process of polymerization, monomers

combine by sharing electrons. This process forms a polymer, which is made of repeating subunits. The resulting material is used in a variety of ways.

Answer:

monomers and polymer.

Explanation:

will an electron and a proton attract or repel one another? how about two electrons?

Answers

Electron and proton attract each other.

Two electrons will repel each other.

An electron is a negatively charged subatomic particle that can be either sure to an atom or free (no longer certain). An electron this is certain to an atom is one of the three primary varieties of particles inside the atom -- the other  are protons and neutrons. collectively, electrons, protons and neutrons shape an atom's nucleus.

A proton is a subatomic particle observed inside the nucleus of each atom. The particle has a positive electric price, same and opposite to that of the electron. If remoted, a single proton could have a mass of best 1.673 ? 10-27 kilogram, simply barely much less than the mass of a neutron.

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what volume of water is needed to dissolve 2.70 grams of n2 at 25 oc under a pressure of 4.46 atm? kh for n2

Answers

2.70 grammes of N₂ must dissolve in 30.5 litres of water at 25 degrees Celsius and 4.46 atm of pressure.

The solubility of N₂ in water depends on the temperature and pressure. To determine the volume of water needed to dissolve 2.70 grams of N₂ at 25 °C and 4.46 atm, we need to use the Henry's law equation, which relates the solubility of a gas in a liquid to its partial pressure:

C = kH x P

where C is the concentration of the gas in the liquid, kH is the Henry's law constant for the gas, and P is the partial pressure of the gas above the liquid.

The Henry's law constant for N₂ in water at 25 °C is 7.07 x 10⁻⁴ M/atm.

First, we need to convert the mass of N₂ to moles using its molar mass:

moles of N₂ = 2.70 g / 28.02 g/mol = 0.0963 moles

Next, we can use Henry's law equation to find the concentration of N₂ in water:

C = kH x P = (7.07 x 10⁻⁴ M/atm) x (4.46 atm) = 3.16 x 10⁻³ M

Finally, we can use the definition of concentration (C = moles of solute / volume of solvent) to solve for the volume of water needed:

Volume of water = moles of solute / concentration = 0.0963 moles / 3.16 x 10⁻³ M = 30.5 L

Therefore, 30.5 liters of water are needed to dissolve 2.70 grams of N₂ at 25 °C under a pressure of 4.46 atm.

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Given the balanced reaction : N2+3H2 —> 2NH3 If you had 15 grams of nitrogen gas mixed with 4 grams of hydrogen, what would the maximum amount (in grams) of ammonia that would be theoretically produced?

Answers

Answer:

Mass = 18.36 g

Explanation:

Given data:

Mass of nitrogen = 15 g

Mass of hydrogen = 4 g

Mass of ammonia produced = ?

Solution:

Chemical equation:

N₂ + 3H₂      →       2NH₃

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 15 g/ 28 g/mol

Number of moles  = 0.54 mol

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 4 g/ 2 g/mol

Number of moles  = 2 mol

now we will compare the moles of ammonia with nitrogen and hydrogen.

                    H₂            :            NH₃

                      3             :             2

                     2              :            2/3×2 = 1.3

                      N₂            :            NH₃

                      1               :             2

                  0.54             :            2/1×0.54 = 1.08

less number of moles of ammonia are produced by nitrogen thus it is limiting reactant.

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 1.08 mol × 17 g/mol

Mass = 18.36 g

_____ reactions occur when a more reactive metal reacts to displaces a ___ reactive metal in a compound.

What are the missing words?

Answers

Answer:

Displacement reactions occur when a more reactive metal reacts to displace a less reactive metal in a compound.

Explanation:

1) displacement reaction. 2) less.

The final electron acceptor in aerobic respiration is....... NAD water oxygen pyruvate O hydrogen . Answer al Question 16 Which of the following processes generate carbon dioxide? Hint There are more than one. Glycolysis Oxidative Phosphorylation The Link Reaction (pyruvate oxidation) The Citric Arid Cycle Lactic Acid Fermentation Alcoholic Fermentation

Answers

The final electron acceptor in aerobic respiration is oxygen (O2).The electron transport chain (ETC) in cellular respiration relies on a final electron acceptor to help oxygen get reduced into water. This is why oxygen is considered the final electron acceptor in cellular respiration.

During cellular respiration, glucose is broken down into pyruvate. Pyruvate is then transformed into acetyl CoA and enters the citric acid cycle, where it is oxidized and generates ATP, NADH, and FADH2. The final stage of aerobic respiration involves the electron transport chain, in which electrons from NADH and FADH2 are passed through a series of proteins and coenzymes in the inner mitochondrial membrane, ultimately reducing oxygen to form water.

This process is known as oxidative phosphorylation.In conclusion, the final electron acceptor in aerobic respiration is oxygen (O2), and carbon dioxide is generated in the link reaction (pyruvate oxidation) and the citric acid cycle.

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