25 grams of (nh4)2co3 is decomposed in an empty container at 100.0 c and 1 atm what is the final volume

The reaction of nitrogen oxides (NOx) and volatile organic hydrocarbons (VOCs) can produce photochemical smog. Photochemical smog occurs when nitrogen oxides and volatile organic hydrocarbons react when activated by sunlight. When sunlight shines on these chemicals, it initiates a complex chain reaction that produces photochemical smog. Smog is the product of many chemicals combined with sunlight. These pollutants, which include nitrogen oxides and hydrocarbons, are emitted by vehicles, factories, and other sources of combustion. When these pollutants react in the presence of sunlight, photochemical smog forms.

Summer smog, also known as photochemical smog, is a form of smog that develops when UV radiation from the sun reacts with the nitrogen oxides in the air. This kind of smog frequently occurs in densely populated cities that are situated in very warm climates and typically appears as a brown haze. Furthermore, the mornings and afternoons are when photochemical haze is most conspicuously seen.

A complicated series of chemical reactions involving sunlight, nitrogen oxides, and volatile organic molecules that are present in the environment as a result of air pollution create photochemical form. Ozone at ground level and other airborne particles are frequently produced as a result of these interactions. The concentration of primary pollutants in the atmosphere has a direct impact on how photochemical smog develops. Additionally, it is connected to the quantity of secondary contaminants.

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Answer:

Atmoic weight / mass...........

Question:

A student weighed an empty graduated cylinder. It weighed 35.86 g. She then carefully added water to the graduated cylinder until it reached the 7.5 mL mark. When she weighed the graduated cylinder again, this time with the 7.5 mL of water in it, it weighed 43.18 g. What was this student's experimental density of water?

Answer:

0.976 g/mL

Explanation:

Weight of empty cylinder = 35.86g

Volume of water = 7.5mL

Weight of cylinder + water = 43.18g

Experimental density = ?

Density of water = Mass of water / volume of water

Mass of water = (Weight of cylinder + water) - Weight of empty cylinder

Mass of water = 43.18 - 35.86 = 7.32g

Density = 7.32 / 7.5 = 0.976 g/mL

The formula managers use to calculate a food service operation's total expense percentage is to divide the total cost of food by total sales.

The resulting amount should then be multiplied by 100 to get the percentage. A food service operation's total expense percentage is the percentage of its total sales that are spent on food.

The formula to calculate the food service operation's total expense percentage is:

Expense percentage = (Total cost of food / Total sales) * 100

This formula gives the total amount or the total expense percentage which a food service operation spends on its food to generate its total sales or revenue.

In this calculation, the total cost of food includes all expenses associated with purchasing, preparing, and serving the food, such as ingredients, labor, and supplies.

The calculation of the food service operation's total expense percentage is critical for the management and profitability of the business. It helps to determine the actual cost of the food and the operation's overall profitability.

By comparing the expense percentage of the business with industry standards and previous performance, management can make informed decisions to control costs, increase revenue, and maximize profits.

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rocks buried is first

its:

Rock is buried deep under Earth's surface.

Rock melts due to high temperature.

Magma is forced out of Earth's surface during volcanic eruption.

Lava cools and crystallizes to igneous rock.

14 litres of volume in litres is occupied by 8.22 g of so2 gas confined at a pressure of 1200 torr at 75.0°c

We know that,
PV=nRT
where,
P = 1200 torr

  = 1.578947 atm

T = 75 C

  = 348.15 K

R = 0.0821 lit/ atm

n = \(\frac{8.22}{64}\) × \(6.022 \\\) × \(10^{23}\)

  = \(0.77\) × \(10^{23}\)

now substituting all the values, we get
\(1.57V = 0.77\) × \(10 ^{23}\) × \(0.0821\) × \(348.15\)

V = 22 / 1.57 (approxx )

V = 14 litre (approxx)

Define pressure.

The force applied direction perpendicular to an object's surface per unit area over which that force is diffused is known as pressure. With relation to the surrounding pressure, gauge pressure is the pressure relative to the ambient pressure  Pressure is expressed using a variety of units.

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The concentration of A is 0.764 mg/mL for a known mixture of compounds a and b gave the following HPLC results.

The force can be calculated buy using the response area for compounds A and B.

10.8/1.03=Fx1.37/1.16

F=2.799

The unknown solution has 29.81 mg of B.

Final concentration of B= 29.81 mg/25 ml =1.924 mg/ml

Let suppose concentration of A to be x mg/ml.

Therefore, the final concentration of A= 10 ml/25 mlx x mg/ml = 0.4 x mg/ml

Now,

Area (A) = 4.3 cm2

Area (B) = 5.99 cm2

So,

4.3/0.4x=2.799 x 5.99/1.1924

x=0.764 mg/ml

Thus, the concentration of A is 0.764 mg/ml.

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The density of the solid is  6.724 g/ml.

Density is the number of factors which can be people, animals, vegetation, or objects in a sure place. To calculate density, you divide the number of objects by the dimension of the place. The populace density of a rustic is the wide variety of human beings in that us of a divided by means of the location in square kilometers or miles.

The density of an amount to being counted is its mass divided by means of its quantity. it also includes measured at zero °C and at 1 atmosphere of stress. Density is vital in figuring out the buoyancy of materials in fluids, as well as in evaluating materials and other measurements.

The density of an object is certainly one of its maximum crucial and easily-measured physical properties. Densities are extensively used to perceive natural substances and to represent and estimate the composition of many varieties of combos.

density = mass/ volume

      = 975g/145ml

      = 6.724 g/ml

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Answer:

37 %.

Explanation:

¡Hola!

En este caso, para el problema descrito, conocemos la corriente de entrada y la de salida del agua, por lo que podemos obtener el flujo de la corriente que contiene el zumo a la salida una vez el agua fue evaporada:

\(F_{sol}=11500kg/dia-3000kg/dia=8500 kg/dia\)

Luego, por medio de un balance de zumo de limón en el evaporador en el cual la cantidad que entra es igual a la que sale con sus respectivas concentraciones:

\(x_z^{entra}*11500kg/dia=x_z^{sale}*8500kg/dia\)

Como la concentración del zumo a la salida es del 50 % (0.50), la de entrada es:

\(x_z^{entra}=\frac{x_z^{sale}*8500kg/dia}{11500kg/dia} =\frac{0.50*8500kg/dia}{11500 kg/dia}\\ \\x_z^{entra}=0.37\)

Que es igual al 37%.

¡Saludos!

Answer:

The protons are located in the nucleus and have a positive charge

Explanation:

(2R,3R,4S)-2,3,4-trichloroheptane and (2S,3S,4R)-2,3,4-trichloroheptane are diastereomers.

Diastereomers can be defined as stereoisomers that are not mirror images of each other. Therefore, option D (diastereomers) is the correct answer. Enantiomers are stereoisomers that are non-superimposable mirror images of each other. Constitutional isomers are molecules that have the same molecular formula but different connections between their atoms, while not isomers are molecules that have the same chemical formula but differ in their three-dimensional arrangement.

Diastereomers are stereoisomers with two or more stereocenters, and they vary in configuration at some stereocenters while retaining others. When molecules have more than one chiral center, there are many ways to combine them, and the resulting isomers can be either diastereomers or enantiomers.

In this case, both compounds have four chiral centers, but they differ in the configuration of only one of the chiral centers, making them diastereomers.

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Orbitals that are described by each of the combinations quantum numbers ; n = 3, ℓ =2 orbitals n = 4, ℓ = 2 is 5. ml=2 here is referring to last(5th) orbital space 4d.

In atomic theory and quantum mechanics, atomic orbital is a function describing the location and wave-like behavior of electron in an atom.

Quantum numbers  (n, l, ml, ms )

n=3, refers to 3rd energy level      

3rd energy level has 3 possible values of l  and d has 5 different orientations.

s=0   p=1    d=2

--> -2,-1,0,1,2

When; n=3 l=2, then number of orbitals is 5.

n=4 refers to 4th energy level ;        

4th level has 4 possible l values;      

s=0 p=1 d=2 f=3        

When, n=4   l=2 and  ml=2  

The number of orbitals is 5 and  ml=2 is referring to last(5th) orbital space 4d.

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The correctly balanced equation for a reaction of aluminium oxide and zinc is as follows: 3Zn + Al2O3 → 2Al +3ZnO

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Answer:

D. 238 94 pu

Explanation:

Answer:

D

Explanation:

Ap3x

Friction acts in the opposite direction to the direction of an object's motion. Therefore, option (b) is correct.

Friction can be defined as the resistance provided by the surfaces that are in contact when they pass over each other. Friction offers the traction that is required to walk without slipping.

Friction can be described as a force that is dependent on external factors.  Friction depends upon the nature of the two surfaces that are in contact and on the smoothness or roughness of the two contacted surfaces. When one body moves over the surface of another, these irregularities on the surface of the bodies get entangled and develop friction.

Friction depends upon the force that is exerted on these surfaces and increases when the force is applied along with the irregularities. Types of Friction are Rolling friction, Static friction, Sliding friction, and Fluid friction.

The force of friction acts in the opposite direction to the direction of an object's motion.

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Using only maps, scientists observed several lines of evidence that led them to theorize that the continents were once joined together before there was evidence from rocks and fossils.

One key observation was the remarkable fit between the coastlines of different continents, such as South America and Africa. They noticed that the shapes of these continents seemed to match like puzzle pieces, suggesting they were once connected.

Additionally, scientists observed similar geological features across continents, such as mountain ranges and rock formations, that extended across apparent continental boundaries. They also noticed the distribution of certain plant and animal species that were found on different continents but had no means of natural dispersal.

These observations, made solely through maps, led scientists to propose the concept of continental drift, which was later supported by geological and paleontological evidence found in rocks and fossils.

Therefore, using only maps, scientists observed several lines of evidence that led them to theorize that the continents were once joined together before there was evidence from rocks and fossils.

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Explanation:

Two main ways, free elections, casting your vote for the candidate supporting your goals. Second, Lobbying the sitting gov.

Answer:

M has lost an electron, one electron, and given it to Mt

Explanation:

There are 15 grams of carbohydrate that is present in one ounce of foods in the grain group.

The simple unit of all carbohydrate is a monosaccharide, that's a single 6-carbon ring structure. Foods high in carbohydrates are an important part of a healthy diet. The RDA for carbohydrates for adults age 19 and older is 130 grams per day. The AMDR is 45% to 65% of total energy intake.  Fiber (non starch polysaccharides), composed of many glucose molecules, which the human frame can't spoil down. Carb counting at its maximum simple stage entails counting the quantity of grams of carbohydrate in a meal and matching that in your dose of insulin.

Therefore, 15 grams of carbohydrate that is present in one ounce of foods in the grain group.

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The list of elements is arranged from smallest to largest atomic radius is F, Cl, and Br. Thus option C is correct.

Atomic radius is defined as the total distance from the nucleus of an atom to the outermost orbital of its electrons.

Periodic table can be defined as a tabular array of the chemical element which is arranged according to their increasing atomic number.

The elements  F, Cl and Br has atomic radius

F = 147 PM

Cl =  175 PM

Br = 185 PM

Thus, list of elements is arranged from smallest to largest atomic radius is F, Cl, and Br. Thus option C is correct.

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Your question is incomplete but probably your full question was

Which of the following list of elements is arranged from smallest to largest atomic radius?

A. K, Ca, Sc

B. K, Na, Li

C. F. CI Br

D. Ge P, O​

answer:asap is the best seller asap is the more complicated i tems

Answer:

A. Heat flows from block 1 to block 2

Explanation:

Thermal or heat energy flows when objects of different temperature come in contact. Heat naturally flows from hot objects (high temperature) to cold objects (low temperature) and will keep on flowing until an equilibrium is reached.

According to this question, two blocks of metal, which are of different temperatures, are illustrated to be in contact. Block 1 is at 60°C while Block 2 is at 25°C. Block 1 is hotter than Block 2, hence, heat will flow from block 1 to block 2.

Answer:  The biology or linguistic  term?

Explanation: The introduction of a plant or animal to a region where it is not indigenous.

In an automated instrument, a sampling source of error could be caused by a short sample or an air bubble in the bottom of the sample cup .

So, the correct answer is A and B.

A short sample may lead to inaccurate measurements, as the instrument might not have sufficient material to analyze, affecting the precision and reliability of the results.

On the other hand, an air bubble in the bottom of the sample cup can interfere with the proper functioning of the instrument's sensors and introduce variability into the measurement process

Both of these factors can compromise the quality of the data generated, making it essential to ensure proper sample preparation and handling to minimize these potential sources of error.

Hence, the answer of the question is A and B

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First, we need to calculate the heat absorbed by the water. Next, we need to use the principle of conservation of energy to calculate the heat released by the pan.

We can use the formula:

Q = m * c * ΔT

We have:

m = 2.0 kg (mass of water)

c = 4.18 kJ/kg·°C (specific heat capacity of water)

ΔT = (63.2°C - 25.0°C) = 38.2°C

Q = (2.0 kg) * (4.18 kJ/kg·°C) * (38.2°C) = 319.22 kJ

Next, we need to use the principle of conservation of energy to calculate the heat released by the pan. We can assume that all the heat released by the pan is absorbed by the water and the calorimeter. We can use the formula:

Q = m * c * ΔT

We have:

m = 3.0 kg (mass of the pan)

c = ? (specific heat capacity of the pan)

ΔT = (300.0°C - 63.2°C) = 236.8°C

Q = 319.22 kJ

Substituting the values, we get:

319.22 kJ = (3.0 kg) * c * (236.8°C)

Solving for c, we get:

c = 319.22 kJ / (3.0 kg * 236.8°C) = 0.449 kJ/kg·°C

The metal that the pan is made of is probably cast iron in this case.

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A tertiary cyclohaloalkane is 1-bromo-1-methylcyclohexane. This indicates that it hinders carbon-1 sterically. As a result, committing to SN1 is more likely than SN2.

The number of protons six and letter C are attributed to the chemical element carbon. Four of its four available electrons can be used to create covalent chemical connections because it is a nonmetallic, tetravalent atom. The periodic table's group 14 includes it. Just 0.025 percent of the carbon on Earth is found in its crust.

Coal, toxic gases, and crude oil are all utilized as fuel in it. It is employed to create a wide range of products, including polymers and steel alloys. Even black ink for printing or painting is produced with it.

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Answer:One carbon atom forms a double bond with an oxygen atom and two single bonds with two hydrogen atoms

Explanation:

Lowering the flame can result in the tip overheating.

An overheating plasma system will wear out torch parts quickly and eventually may burn out the torch and leads.

What is an oxy-acetylene torch set?

A gas torch that burns a mixture of acetylene and oxygen to produce a high-temperature flame (3,000°C or 5,400°F) that can weld or cut metal.

Can an oxy-acetylene torch explode?

Thus, lowering the flame's size may result in the tip overheating.

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Answer:b

Explanation: