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The atmospheric concentration of a gas depends on its emission into the atmosphere and its rates of physical, chemical and biological removal. The time to lower the concentration of the gas to 37% of its original amount is its atmospheric lifetime.

The measurements of CO2 equivalents in parts per million CO2 is termed as atmospheric concentration. The pressure exerted by the atmosphere on the gas is called atmospheric pressure.

The atmospheric lifetime of a species mainly measures the time which is require to restore equilibrium in the atmosphere that follows a sudden decrease or increase in the concentration of the species in the atmosphere.

Emission is something which can be released, emitted or discharge.

Types of emission

Thus, we concluded that the atmospheric concentration of a gas depends on its emission into the atmosphere and its rates of physical, chemical and biological removal. The time to lower the concentration of the gas to 37% of its original amount is its atmospheric lifetime.

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Answer:

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Explanation:

Answer:

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Answer:

17.03052 g/mol

Explanation:

Ammonia formula is given as NH3.

To estimate the molar mass of any compound, we have to add up the molar masses of every atom of the given compound. Ammonia comprises of one nitrogen atom and three hydrogen atoms.

So the molar mass of ammonia is

N: 14.0067 g/mol

H: 1.00794 g/mol

The molar mass of ammonia will thus be

14.0067 g/mol +3× 1.00794 g/mol =17.03052 g/mol

Under standard conditions, the numerical value of the reaction quotient (Q) in the Nernst equation is 1. Yes, the Nernst equation can be used at temperatures other than room temperature.

In the Nernst equation, the reaction quotient (Q) represents the ratio of product concentrations to reactant concentrations, each raised to their respective stoichiometric coefficients. Under standard conditions (298 K, 1 atm, and 1 M concentrations), Q is equal to 1 because the concentrations of products and reactants are equal.

The Nernst equation can be applied at temperatures other than room temperature, as it contains a temperature term (T) in its formula. By adjusting the temperature value, the equation can calculate cell potentials for various temperatures, making it applicable for a wide range of conditions.

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The concentration contained in 14.5 grams of ammonium nitrate that is dissolved creating 250 milliliters is 0.72M.

The molarity or concentration of a substance refers to the concentration of a substance in solution, expressed as the number moles of solute per litre of solution.

Molarity can be calculated by dividing the number of moles in a substance by its volume as follows:

Concentration = no of moles ÷ volume

14.5 grams of ammonium nitrate with a molar mass of 80.043g/mol can be converted to moles to be 0.18 moles.

molarity = 0.18 mol ÷ 0.250L = 0.72M

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Answer:

The final temperature of the mixture is 22.3°C

Explanation:

Assuming that the 120 g substance at 80°C is water, final temperature of the mixture can be determined using the formula:

Heat lost = Heat gained

Heat = mc∆T where m is mass, c is specific heat capacity of water, and ∆T is the temperature change = Tfinal - Tinitial.

Let the final temperature be T

Heat lost = 120 × c × (T - 80)

Heat gained = 3000 × c × ( T - 20)

Equating the heat lost and heat gained

120 × c × -(T - 80) = 3000 × c × (T - 20)

9600 - 120T = 3000T - 60000

60000 + 9600 = 3000T + 120T

69600 = 3120T

T = 69600/3120

T = 22.3°C

Therefore, the final temperature of the mixture is 22.3°C

The mass οf a gaseοus cοmpοund οf phοsphοrus is 3.60 gmοlar, then  mass will be 34.0g/mοl and the density will be 1.39g/L.

The mass in grams οf οne mοle οf a cοmpοund is its mοlar mass. A mοle is the quantity οf entities, such as atοms, mοlecules, οr iοns, in a substance. A chemical entity's mass per unit amοunt οf substance is referred tο as its mοlar mass (symbοl M, SI unit kgmοl1).

When setting up an experiment, mοlar mass is very impοrtant. The mοlar mass allοws yοu tο determine hοw much yοu shοuld weigh οut οn yοur scale when testing principles invοlving specific amοunts οf a substance.

Tο calculate mοlar mass:  

mοlar mass= dRT/P

mm= (.943g/L)(.0821 L-atm/mοl-K)(420K)/(727/760)atm

mm=34.0g/mοl

Fοr calculating density,

density = PM/RT

d= (1amt)(34g/mοl) /(.0821 L-atm/mοl-K)(298K)

d= 1.39g/L

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False, Asbestos is a naturally occurring mineral fiber that was commonly used in various industries due to its heat resistance, strength, and insulating properties.

Asbestos does not necessarily need to be removed if it will not be disturbed or pose a risk to human health. Asbestos-containing materials that are in good condition and undisturbed are generally considered safe. However, if asbestos-containing materials are damaged, deteriorating, or will be disturbed during renovation or demolition activities, it is necessary to take appropriate precautions, which may include professional removal or encapsulation, to prevent the release of asbestos fibers into the air. The decision to remove asbestos should be based on an assessment of its condition, potential for disturbance, and adherence to local regulations and guidelines.

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By looking at a nuclear reaction, a fission reaction can be easily identified as it shows the breakdown of a larger atom into two or more smaller nuclei.

it is the formation of one or more new nuclides by the collision of two nuclei or external subatomic particles. Nuclear reactions are of two types:

In nuclear fission reaction, a heavier nucleus splits into several smaller lighter nuclei fragments and two or more neutrons. These fragments, or fission products, are either equal to or half of the original mass of the atom The reaction proceeds with a very high emission of energy.

\(238_{92}\)U → \(234_{90}\)Th + \(4_{2}\)\(\alpha\)

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Increasing the pressure in the system would favor the forward reaction in the equilibrium, which is the production of Ni and CO gas.

According to Le Chatelier's principle, when a system at equilibrium is subjected to a change in pressure, it will shift to the direction that reduces the effect of the change.

In this case, increasing the pressure would cause the system to shift towards the side with fewer moles of gas, which is the side with solid Ni and CO gas.

Therefore, increasing the pressure would result in a higher rate of nickel production, as more Ni(CO)4 would be converted to Ni and CO gas. However, it is important to note that increasing the pressure beyond a certain point may not result in any significant changes in the rate of the reaction, as the equilibrium constant for this reaction may be reached at high pressures.

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The average translational kinetic energy of the oxygen molecules under these conditions is 339.48 x 10⁻²³ J.

Kinetic Translational energy is the energy associated with the movement of a chemical reality's center of mass, where m is the mass of the chemical reality( patch, snippet or ion) and v is the haste of its center of mass.

Number of moles of oxygen m =  mol

Volume of gas V = 5.06L

= 5.06 x 10⁻³ m³

Pressure of the gas P = 8.01 atm

= 8.01 x (1.013x10⁵ Pa)

= 8.114 x 10⁵ Pa

Use the ideal gas equation

PV =nRT

T = temperature of the gas

= PV/nRT

= \(\frac{(8.114*10^5 Pa) (5.06*10^-^3)}{3mol*8.314J/molK}\)

= 164K

Average translational Kinetic energy

KE = 3/2KbT

= 3/2 (1.38 x 10⁻²³ J/K) (164K)

= 339.48 x 10⁻²³ J

Therefore, The average translational kinetic energy of the oxygen molecules under these conditions is 339.48 x 10⁻²³ J.

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Answer: Metallic bonding is a type of chemical bonding and is responsible for several characteristic properties of metals such as their shiny lustre, their malleability, and their conductivities for heat and electricity. Both metallic and covalent bonding can be observed in some metal samples

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Electrons move freely among positively charged ions. This is the characteristics of a metallic bond. Therefore, the correct option is option B.

Valence electrons in a metallic link are not bound to a specific pair of atoms, but rather travel freely among a "sea" of positively charged metal ions. These electrons are not assigned to any specific atom and are shared by all metal ions in the metallic lattice.

The electron sea model depicts the valence electron arrangement as a "sea" of negatively charged electrons encircling positively charged metal ions. Metals have strong electrical and thermal conductivity due to electron mobility.

Therefore, the correct option is option B.

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Answer:

Light and Sound can be considered as non-matter.

Explanation:

Various forms of Energy like Heat, Sound, Light can be considered as non-matter

Answer and Explanation:

A) Unconditioned Stimulus- The onion

B) Unconditional Response- Crying

C) Conditioned Stimulus- Chiming clock

D) Conditioned Response- Crying

In the above scenario( an example of classical conditioning), Elmer has been conditioned by the continuous iterations of having to cook everyday by 5pm. He cooks with onions by 5pm around the same time his uncle's clock chimes five times. He cries/has teary eyes(unconditioned response) because of the response to the onions(unconditioned stimulus) around the same time the clock chimes five times thereby conditioning his response so that even when the onions isn't there/he isn't even cooking, he tears up to the clock chimes around 5pm. The clock is therefore a conditioned stimulus and there is a conditioned response of crying.

The unconditioned response to an unconditioned stimulus happens naturally(an instinct) because it is a biological response to the onions, not conditioned.

Answer:

15.30 ×10²³ molecules of ammonia

Explanation:

Given data:

Volume of ammonia = 57.0 L

Temperature = standard = 273 K

Pressure = standard = 1 atm

Number of molecules of ammonia = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

1 atm ×57.0 L = n ×0.0821 atm.L/ mol.K   × 273 K

57.0 L.atm =  n × 22.41 atm.L/ mol

n = 57.0 L.atm/22.41 atm.L/ mol

n = 2.54 mol

Number of molecules of ammonia:

1 mole of gas have 6.022 ×10²³ molecules of ammonia.

2.54 mol ×6.022 ×10²³ molecules / 1 mol

15.30 ×10²³ molecules

Explanation:

CH4 + 4S ---> CS2 + 2H2S

4) 0.75 mol S × (1 mol CS2/4 mol S) = 0.19 mol CS2

5) 3 mol H2S × (1 mol CH4/2 mol H2S) = 1.5 mol CH4

Fe2O3 + 2Al ---> 2Fe + Al2O3

6) 25 g FeO3 × (1 mol Fe2O3/159.69 g Fe2O3) = 0.16 mol Fe2O3

0.16 mol Fe2O3 × (2 mol Al/1 mol Fe2O3) = 0.32 mol Al

0.32 mol Al × (26.98 g Al/1 mol Al) = 8.6 g Al

7) Given:

45 g Al × (1 mol Al/26.98 g Al) = 1.6 mol Al

85 g Fe2O3 ×(1 mol Fe2O3/159.69 g Fe2O3)

= 0.53 mol Fe2O3

Let's look at how much Fe each reactant will produce:

1.6 mol Al × (2 mol Fe/2 mol Al) = 1.6 mol Fe

0.53 mol Fe2O3 × (2 mol Fe/1 mol Fe2O3) = 1.1 mol Fe

Note that the given amount of Fe2O3 will give us fewer Fe. Therefore, Fe2O3 is the limiting reactant.

8) Al will produce 1.6 mol Fe × (55.845 g Fe/1 mol Fe)

= 89 g Fe

Fe2O3 will produce 1.1 mol Fe × (55.845 Fr/1 mol Fe)

= 61 g Fe

9) Since Fe2O3 is the limiting reactant, the ideal yield of Fe for the reaction is 61 g. If the actual reaction only gave us 25 g Fe. then the percent yield of Fe is

%yield = (25 g Fe/61 g Fe) × 100% = 41%

10) If we only got 25 g Fe, then the amount of Al actually used in the reaction is

25 g Fe × (1 mol Fe/55.845 g Fe) = 0.45 mol Fe

0.45 mol Fe × (2 mol Al/2 mol Fe) = 0.45 mol Al

0.45 mol Al × (26.98 g Al/1 mol Al) = 12 g

Therefore, the leftover amount of Al is

25 g Al - 12 g Al = 13 g Al

Answer:

Final Temp = 23.92°C

Explanation:

ΔH(total) = (m·c·ΔT)ice + (m·ΔH(f))melt'g + (m·c·ΔT)water

2182.5j = (5g)(2.092j/g·°C)(1°C) + (5g)(334.56j/g) + (5g)(4.184j/g·°C)(ΔT)

(2182.5 - 10.46 - 1672.8)j = 20.92j/°C·ΔT

ΔT = (2182.5 - 10.46 - 1672.8)j / 20.92j/°C = 23.92°C

Since the melting ice starts and ends at 0°C and is then warmed to 23.92°C then the temperature change is also the final temp of the water based upon given energy input values.

Answer:

22 626 000 J. = 22 626 kJ. 4. If 9000 J of heat are absorbed by 800 g of water at 5.0 o. C, what maximum temperature will the water attain? Q = mc ∆T.

Explanation:

The final temperature can be calculated using the calorimetric equation. Here, the final temperature of water is 27.71 °C.

The calorimetric equation connecting the heat energy absorbed or released q by a system with the mass m, temperature difference ΔT and the specific heat capacity c as follows:

q = m c ΔT

The specific heat capacity of water = 4.15 J/ °C g.

given that heat energy absorbed q = 9000 J

mass = 800 g

initial temperature = 25 °C.

Then,

9000 J = 4.15 J/ °C g. × 800 g (25 °C + T)

then T = [ 9000 J/  4.15 J/ °C g. × 800 g ] + 25 °C = 27.71  °C.

Therefore, the final temperature of water is 27.71  °C.

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Answer:

they have different wavelengths

Answer: Zinc is a bluish-white metal used to galvanize iron, and is also found in alloys, batteries, and rubber.  Sulfur is a yellow, brittle nonmetal; it can also be found in a powered form.  Zinc and sulfur react with each other violently to produce zinc sulfide; the reaction is accompanied by a vigorous evolution of gas, heat, and light:

Zn(s)  +  S(s)  ——>  ZnS(s)  [one of the easier  

chemical equations  

to balance!]

The products of the reaction also include small amounts of zinc oxide (ZnO) and sulfur dioxide (SO2).

This reaction produces enough hot gas to propel small rockets; this was one of the model rocket propellants described by Homer Hickam in his book Rocket Boys (Delacorte Pr; 1998) [filmed as October Sky (Universal Studios, 1999)].

In the first demonstration below, powdered zinc and sulfur are mixed in a porcelain evaporating dish and heated with a flame; the mixture burns with a yellowish-green flame, and leaves a residue of yellow zinc sulfide in the dish.  In the second video clip, a larger sample is ignited in an evaporating dish, which shatters; and in the third clip, a similar mixture cracks a large porcelain crucible.

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Orbiting electrons would emit light, The solar system model of the atom describes a situation in which the atom would collapse, Orbiting electrons would accelerate.

The elementary electric charge of the electron (eor -), a subatomic particle, is a negative one. Due to the fact that they are assumed to be elementary particles and lack any known components or substructure, electrons, which are a member of the first generation of the lepton particle family, are classified as such. The mass of an electron is around one-eighth that of a proton.  An intrinsic half-integer value angular momentum (spin) with units of the decreased Planck constant,, is one of the electron's quantum mechanical properties. The characteristics of both waves and elementary particles are shared by electrons. They are susceptible to particle collisions and to light-like diffractive effects. It is simpler to understand the wave characteristics of electrons.

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Answer:

18 g H2O

explanation:

(1 mol O atoms)/16.00 g

= 16.00 g

1 mol O

Answer:

A. physical change

b. physical change

c. chemical change

d. chemical change

Answer:

Moles= 11/44 = 0.25 molesof CO2. Click to see full answer Considering this, how many moles of carbon are in 1 mole of co2? A mole of CO2molecules (we usually just say “a mole of CO2”) has one moleof carbonatoms and two molesof oxygen atoms.

Exxplanation:

Answer: I think the answer is B or C, its kind of hard.

As the number of atoms in the water vapor is equal to the number of atoms in the liquid water. Therefore, the mass of the water remains the same.

Evaporation is a process that usually happens on the surface of water or liquid and it involves the conversion of the liquid phase into the gaseous phase. This process involves a change in the state of matter of water or liquids.

When the water is completely evaporated into water vapor the density of the water vapor is less than the density of the liquid water as the vapors occupy a large volume in comparison to liquid water.

But the number of atoms in the water vapor is the same as the number of atoms in the liquid water. The mass of the water is due to the mass of the atoms.

Therefore, the mass of the water remains the same during the phase transition from liquid water to water vapors. Therefore, option (C) is correct.

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Answer:

2.7 mL

Explanation:

The equation of the reaction is;

2AlBr3 + 3Cl2 -----> 2AlCl3 + 3Br2

Number of moles in 2.12 x 1022 formula units of aluminum bromide

1 mole of AlBr3 = 6.02 * 10^23 formula units

x moles = 2.12 x 1022 formula units

x = 2.12 x 1022 formula units  * 1 mole/ 6.02 * 10^23 formula units

x = 0.0352 moles of AlBr3

According to the reaction equation;

2 moles of AlBr3 produces 3 moles of Br2

0.0352 moles of AlBr3 produces 0.0352 moles  *  3 moles /2 moles

= 0.0528 moles of Br2

Mass of Br2 produced = 0.0528 moles of Br2 * 159.808 g/mol

Mass of Br2 produced = 8.44g

But density = mass/volume

volume = mass/density

volume of Br2 = 8.44 g/ 3.12 g/mL

volume of Br2 =  2.7 mL