what are the two quantities in this module for which we will develop unit factors to do dimensional analysis with chemical substances?

The pressure in the left intrapleural cavity changes when the valve was opened as : It went from negative number to zero and the pressure in intrapleural cavity equalized with the atmospheric pressure.

The pressure inside the pleural cavity is called as intrapleural pressure. It is characterized as negative pressure when the pressure inside the pleural cavity is typically only a little bit lower than the ambient pressure.

The external intercostal muscles and diaphragm contract during inspiration, expanding the thoracic cavity. As a result, the intrapleural pressure decreases, increasing the transpulmonary pressure and expanding the lungs.

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K can be found in solid form. Water exists as a liquid. KOH can be found in aqueous form. Hydrogen exists as a gas.

Reactants are chemical compounds that engage in chemical reactions, resulting in the formation of new chemicals known as products. Products are the new compounds created as a result of the chemical reaction between reactants.

Reactant- The substances which participate in a chemical reaction, are called reactants. A chemical reaction describes the process by which atoms, the fundamental building blocks of matter, rearrange themselves to form new combinations. Reactants are raw materials that react with one another.

Product- A product is a substance that is present at the end of a chemical reaction. In the equation above, the zinc and sulfur are the reactants that chemically combine to form the zinc sulfide product.

Here,

K=solid

H₂O=liquid

KOH=aqueous

H₂=gas

K exist in solid form. H₂O exist in liquid form. KOH exist in aqueous form. H₂ exist in gas form.

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The transition causing the absorption line at the longest wavelength is the transition from -2 to +2.

Ground State: -2

Number of Excited States: 4

Number of Lines in the Absorption Line Spectrum: 8

Transition Causing Absorption Line at Shortest Wavelength: -3 to -2

Transition Causing Absorption Line at Longest Wavelength: -2 to +2

The ground state is the state at the bottom of the diagram, which is -2.

There are 4 excited states, which are -3, -2, +1, and +2.

There are 8 lines in the absorption line spectrum, which are the 4 transitions from the ground state to the excited states, and the 4 transitions from the excited states back to the ground state.

The transition causing the absorption line at the shortest wavelength is the transition from -3 to -2.

The transition causing the absorption line at the longest wavelength is the transition from -2 to +2.

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Answer: -162,120J

Explanation:

Okay, so q stands for work, given by the formula q = -P∆V,

For the first round, we have 2atm (for P) and a volume change of 3.2 (6.4-3.2) for the first experiment.

Find the work: q = -2 • (3.2 - 6.4) = 6.4L/atm

For the second experiment, it is now 2.5atm, with the change in volume going from 3.2 to 2.56.

So, work is q = -2.5(2.5 - 3.20) = 1.6L/atm

Add the total work: 1.6 + 6.4 = 8L/atm

To find the Joules per L/atm, recall that a mol of gas in K is 8.31447J, while the gas constant where a liter of gas per mol in K is 0.08206L/atmK. Divide these two values, which leaves us with 101,325J

So, for the first round, multiply 8 x 101,325, which leaves us with 810,600J.

Second round: The pressure is 2.5atm, with the volume change from 6.40 to 2.56

Solve for work: q = -2.5(2.56-6.4) = 9.6L/atm

Multiply with the Joule unit found earlier: 9.6 x 101,325 = 972,720J.

To find the difference, subtract the value of the single-step process (second round) from the first round (multistep)

810600 - 972720 = -162,120J. Therefore, it takes more heat to do the single step than the multistep process.

The mathematical expressions written using a single exponent are as follows:

4⁴(4⁷) = 4¹¹

5⁹/5³; a = 6

(6²)⁷ = 6¹⁴

A number or letter written above and to the right of a mathematical expression known as the base is termed an exponent. It denotes that the base is to be increased in strength.

Consider the following expression: xⁿ

In the given expression above, the base is x, while the exponent or power is n. For expressions having the same base, the exponents are added if the expressions are to multiplied, and subtracted when the expressions are to be divided.

The exponents are multiplied if the exponents are raised to a power.

Considering the given expressions:

4⁴(4⁷) = 4¹¹

5⁹/5³ =  5⁶

Hence, a = 6

(6²)⁷ = 6¹⁴

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As a result, 6.022 x 10 23 molecules of water weigh 18.02 g. A mole of sodium chloride (6.02 x 1023 formulas) weighs 58.44 g.

A substance's mole is equivalent to 6.022 x 1023 of that material (such as atoms, molecules, or ions). One mole, or 6.022 x 1023 molecules, is equal to one gram's worth of any given substance's molecular mass. Thus, a mole of oxygen (O2) weighs 32 kilos and has a molecular mass of 6.022 1023.

12 grams of pure carbon-12 weigh exactly one mole, or 6.022 x 1023 atoms, making one mole equivalent to 12 grams of pure carbon-12. • Avogadro's Number refers to the quantity of particles contained in one mole (6.0221421x1023).

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The reaction that has been shown in the table above is a double replacement reaction, and each compound has the same set of ions. Option D

Another word that we can use for reaction is what we call a chemical change. We know that a chemical change is the kind of change that will lead to the formation of a new product. It is an irreversible process as we can not be able to get back the reactants again.

We should note that there are various types of reactions. In a single  replacement reaction, you would notice that there is only one substance that reacts and causes a change while in the double replacement reaction, the anions that are in the compounds that underwent the reaction would just exchange anion partners and we would have two ionic products.

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The price of the wax from the U.S. supplier in €/kg would be: €25.53 / 2.20 lb = €11.67/kg.

The price of the wax from the German supplier in $/lb would be $11.90 / 0.76 = $15.68/lb.

This price is calculated by taking the cost of the wax in US dollars and converting it to Euros using the current exchange rate of $1 = €0.76.

This price is calculated by taking the cost of the wax in Euros and converting it to US dollars using the current exchange rate of $1 = €0.76. It's important to note that the price of the wax from the German supplier is higher than the price from the US supplier when converted to dollars per pound.

This is because the price per kg is lower but the conversion to pound makes it higher.

The price of the wax from the U.S. supplier in €/kg would be: €25.53 / 2.20 lb = €11.67/kg.

The price of the wax from the German supplier in $/lb would be $11.90 / 0.76 = $15.68/lb.

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D. methane, butane and propane

Propane and butane are both types of alkane hydrocarbons with relatively low boiling points, which allows them to be easily converted to a liquid form at relatively low pressures. This makes them easy to transport and store. Methane, ethane, and hexane are also alkane hydrocarbons, but they are not typically found in large amounts in LPG.

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Mass is a measure of an object's resistance to acceleration.

1. Calculate the total mass of the sample:

37.50 g

2. Calculate the total mass of the elements O and C:

19.01 g + 4.76 g = 23.77 g

3. Calculate the mass of Cr:

37.50 g - 23.77 g = 13.73 g

4. Calculate the composition of Cr in the compound:

13.73 g / 37.50 g x 100 = 36.56

What is Mass?

The resistance to acceleration of an object is measured by its mass. It is a fundamental property of physical objects and is often expressed in kilograms (kg) or grams (g). Mass is related to the inertia of an object, which is a measure of how difficult it is to change the object's motion. Mass also determines the strength of the gravitational force acting on an object.

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There are two isotopes of bromine atom⁷⁹Br, ⁸¹Br.

a) Each peak originates from a different isotope of bromine. Each peak is composed of a different isotope of bromine. The mass of each isotope is the sum of the masses of the two atoms in the molecule. The average molecular weight of Br_ molecules is 36.184 g/mol.

b) The isotope of bromine has an atomic weight of 78.92 amu and a relative abundance of 50.69. The other major isotope of bromine has an atomic mass of 80.92 amu and a relative abundance of 49.31.

c) The average molecular mass of a [tex]Br_{2}[/tex] = 159.8066274.

d) The average atomic mass of Bromine is found to be. 9 u or 79.9 g mol⁻¹.

e) Bromine has two stable isotopes, ⁷⁹Br and ⁸¹Br, having relative mass abundances of 50.686% and 49.314%

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Titration is a quantitative analysis method for determining the concentration of a substance from a measured titrant. According to the equation, if the reactants are halved, the amount of H2O produced will be halved.

The molecular equations for sodium hydroxide, hydrochloric acid, sodium chloride, and water can be expressed as:

 HCl + NaOH ⇒ NaCl + [tex]H_{2}[/tex]O

In the given equations, the spectator ions and the ionic equation can be distinguished as follows:

H⁺ + Cl⁻ Na⁺ + OH⁻ ⇒ Na⁺ + Cl⁻ + 2H⁺ + O⁻²

The net ionic equation is:

 H⁺ + OH⁻ ⇒ [tex]H_{2}[/tex]O

From the above equation, we can see that the production of water molecules depends on the number of reactants. The reactants are,

H⁺ and OH⁻.

Therefore, when the number of reactants is halved, the resulting water molecules are halved.

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Answer: Pitcher plant have adapted themselves to live in poor nutriet soil As they are carnivorous and feed on the insects is the major adptation for them as they does not have proper nutrients,availabilty for the growth.

Explanation:

Calcium oxide reacts with water to form calcium hydroxide which is a type of combination reaction. Therefore, the balanced chemical equation is: CaO+H2O→Ca(OH)2+Δ

The symbolic representation of a chemical reaction is a chemical equation. In this, the formulas and symbols for the reactants and products are used to depict them. Since the Middle Ages, quicklime, also known as calcium oxide, has been utilized as an alkaline substance. One of the oldest substances that humans have ever discovered is quicklime. Other names for it include lime or burned lime. Lime, or calcium oxide, is a chemical substance with the formula CaO. When calcium oxide, also referred to as quick lime, and water combine, calcium hydroxide is created (commonly known as slaked lime). This reaction is an example of a combination reaction.

Calcium oxide + Water → Calcium hydroxide

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An alpha particle bombardment of aluminum with an atomic number of 27 results in the production of a neutron and phosphorus 15. The particular isotope formed is aluminum-28.

Fundamental alterations take place at the level of the atomic nucleus during nuclear reactions. Analyze the properties of the neutron, which has a mass similar to that of a proton but no electric charge. As a result, when it interacts with the aluminum core, the atomic number should remain constant but the atomic mass should rise by one unit. The newly produced atom is in an excited state when it transitions to the base state with the emission of a high-energy radiation called a gamma ray. Aluminum-28 isotope is formed.   ⁷A₂₇ + ⁰n₁ → ⁷Al₂₈ˣ

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The quantity of atoms or molecules per gram of atomic weight is known as aspartame number, which is 6.022 1023/mole.

A dipeptide made up of the amino acids phenylalanine and aspartic acid is called aspartame and is its methylester. People with phenylketonuria, who must carefully limit their intake of phenylalanine, must be made aware of the ingredient's existence in the medicinal product and the quantity present in each dose unit. In turn, 10 g of aspartame contains 0.034 moles of molecules. How many nitrogen atoms make up 1.2 grams of aspartame? Due to aspartame's 294.347 g/mol molar mass, 1.2 g is equal to 1.2 g / 294 g/mol, or 0.0041 moles. Aspartame is digested in the body, unlike certain other potent sweeteners, and as a result.

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The specific heat capacity of the substance, given that the subtance changes temperature from 35.0 °C to 65.0 °C when it absorb 15000 J of energy is 50 J/gºC

We'll begin by obtaining the change in the temperature of the substance.etails below:

ΔT = T₂ - T₁

ΔT = 65 - 35

ΔT = 30 °C

Finally, we shall determine the specific heat capacity of the substance. Details below:

Q = MCΔT

15000 = 10 × C × 30

15000 = 300 × C

Divide both sides by 300

C = 15000 / 300

C = 50 J/gºC

Thus, the specific heat capacity of the substance is 50 J/gºC

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The student is to weigh out 94.5g of glycerol in accordance with the provided statement.

Glycerin is a kind of carbohydrate known as a polyol, along with other sugar alcohols including sorbitol and erythritol. Glycerin has a complex taste, but unlike sugar I've already discussed—it is not absorbed by the body as sugar and does not raise blood sugar levels. Glycerol may be safe for short-term treatment when taken orally. Headaches, lightheadedness, bloat, nausea, and diarrhea are possible side effects. Glycerol appears to be safe when used topically. It might result in burning, itching, and redness.

1mL = 1cm³

Quantity = 75mL = 75cm³

1.26 g/cm³ is the density.

Mass = ?

Mass is equal to the product of volume and density.

Mass = 1.26 * 75 = 94.5g

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The complete question is-

A chemistry student needs 75.0 mL of glycerol for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of glycerol is 1.26 g.cm⁻³. Calculate the mass of glycerol the student should weigh out. Be sure your answer has the correct number of significant digits.

The specific heat capacity of the gaseous ethanol is less than the specific heat capacity liquid ethanol.

The specific heat capacity is given as :

Q = mc ΔT

where ,

Q = heat

m = mass

c = specific heat capacity

ΔT = temperature change

The heating curve represented the temperature , T in the y axis and the heat added at the x - axis. the slope is given as :

T / Q = 1 / C

T is the temperature and the c is the specific heat capacity.

Thus, the heat capacity of the gaseous ethanol is low as compared to the liquid ethanol.

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Answer:

Explanation:

To determine how many moles of KCI are produced at the same time as 9 moles of O2, you can use the balanced chemical equation for the reaction. The balanced equation for the reaction of potassium chlorate (KCIO3) with oxygen gas (O2) is:

2KCIO3 = 2KCI + 3O2

This equation tells us that for every 2 moles of potassium chlorate that react, 2 moles of potassium chloride (KCI) are produced, along with 3 moles of oxygen gas.

Since we know that 9 moles of O2 are produced, we can use the balanced equation to determine how many moles of KCI are produced as well. Since the ratio of O2 to KCI in the equation is 3:2, we can divide 9 moles of O2 by 3 and multiply the result by 2 to find the number of moles of KCI that are produced:

9 moles O2 / 3 = 3 moles KCI

So, for 9 moles of O2, 6 moles of KCI are produced.

Answer: 6 mol KCI

Explanation:

0.0080 grams are in 0.89 moles of CaCI₂.

The mole (M) is defined as it contain exactly 6.023 × 10²³ elementary entities present in it. 1 mole is exactly equal to the 6.023 × 10²³ elementary entities.

We can solve the above problem as follows;

So,

1 Mole of substance = Molar mass of the substance.

The given compound named is Calcium Chloride.

Then,

Molar mass of Calcium chloride = 1 mole

Molar mass of CaCl₂ = 40 + 2 × 35.4

= 110.9g/mol

Therefore,

110.9 grams of CaCl₂ = 1 mole

1 gram of CaCl₂ = 1 / 110.9

0.89 grams of CaCl₂

= 1 / 110 ×  0.89

= 0.0080 grams

Thus, 0.0080 grams are in 0.89 moles of CaCI₂.

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A chemical reaction reaches equilibrium when the rate of the forward reaction is equal to the rate of the reverse reaction, resulting in no net change in the concentrations of the reactants and products.

A scientist observing a chemical reaction can tell if the reaction has achieved equilibrium by monitoring the following: Concentration of reactants and products: The concentrations of reactants and products should no longer change over time if the reaction has reached equilibrium. Temperature: If the reaction has reached equilibrium, the temperature of the system should remain constant. Pressure: If the reaction is taking place in a closed container, the pressure of the system should also remain constant if the reaction has reached equilibrium. It's worth noting that the equilibrium is a dynamic process, meaning that the concentrations of reactants and products will remain constant over time, but the chemical reaction is still taking place.

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First, we must compute the index of hydrogen deficiency, IHD, using the molecular formula of the compound [tex]C_{10}H_{14}O_{2}[/tex].

What is a spectrum data?

Spectrum data is data collected from spectroscopic experiments, which measure the interaction of matter with electromagnetic radiation. This data can be used to identify the chemical composition of a sample, as different elements and molecules absorb and emit radiation at different wavelengths.

Then, number of C atoms - [tex]\frac{number of atoms}{2} + 1[/tex]

                                          = [tex]10 + \frac{14}{2} + 1[/tex]

                                          = [tex]10 - 7 + 1[/tex]

                                          = [tex]4[/tex]

Based on the molecular structure, this tells us how many multiple bonds and rings the compound has.

This compound contains four unsaturated bonds. We can tell from the spectrum data that it is aromatic (chemical shifts above 6 comes from aromatic protons). Based on this, we can conclude that the structure of this compound contains a benzene ring. Four IHD are found in the benzene ring, one from the ring and three from double bonds.

Following that, IR spectrum data revealed that absorption on [tex]3150-2850 cm^{-1}[/tex] indicated hybridised CH bonds.

The following chemical shifts are observed in the NMR spectrum data:

On 1,4ppm, it becomes a 6H triplet. It has two protons in its neighbourhood because it is a triplet, and it comes from [tex]CH_{3}(1)[/tex]. This group must be linked to the [tex]CH_{2}(2)[/tex].

A quartet on 4,0ppm, belongs to 4H from [tex]CH_{2}(2)[/tex].  It has 3 protons in neighborhood stop it it attached to the [tex]CH_{3}(1)[/tex] and singlet on 6,8ppm comes of aromatic protons, 4H (3).

Based on the [tex]^{1} HNMR[/tex] spectrum data, we can only attach the two O atoms to the benzene ring and the [tex]CH_{2}(2)[/tex] group.

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Answer:

because I'm the reactivity table of metals it shows that iron is indeed more reactive than copper

Explanation:

potassium (most reactive)

sodium

lithium

calcium

magnesium

aluminum

zinc

iron

tin

lead

hydrogen

copper

mercury

silver

gold( least reactive)

The compound is Glucose.

C: 40 g divided by 12 g per mol equals 3.333 mol

H: 6.72 g/mol (1 g) = 6.72 mol

O: 53.28 g/mol (16 g) = 3.33 mol

Subtract the lesser amount of moles.

C: 3.333 / 3.33 = 1.00

H: 6.72 / 3.33 = 2.02 ≈ 2

O: 3.33/3.33 = 1.00

Statistical method

The empirical formula's molar mass is 12 g/mol + 2*1 g/mol + 16 g/mol = 30 g/,ol.

180 g/mol / 30 g/mol = 6 times the mass of the empirical formula is contained in the molar mass.

The empirical formula of compound is six times the molecular formula.

=>[tex]C_{6} H_{12} O_{6}[/tex]

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The moles of ammonia needed to produce 1.3 mole of water is 0.84 mol.

balance chemical equation for the reaction

[tex]4NH_{3}+5O_{2}- > 4NO +6H_{2}O[/tex]

In chemistry, stoichiometry is the measurement of the ratios in which different substances or elements interact. The laws of conservation of mass, energy, and weights or volumes serve as the foundation for the rules used to determine stoichiometric relationships.

stoichiometric moles of ammonia reacting = [tex]\frac{moles}{stoichiometry}[/tex]

stoichiometric moles of water reacting = [tex]\frac{1.3}{6} =0.21[/tex]

0.21 stoichiometric moles of water is given by 0.21 stoichiometric moles of water

so moles of ammonia will form = stoichiometric moles * stoichiometry

moles of ammonia will form = 0.21 * 4  = 0.84 mol

so moles of ammonia produced by reaction = 0.84 mol

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Based on this table which describes geological events, a statement that is most likely correct include the following: B. Event A represents volcanic eruption and Event B represents earthquakes.

Generally speaking, a divergent boundary is characterized by plates that are moving apart from one another, as well as basaltic volcanism and seafloor spreading. Also, a typical example of a divergent is the Mid-Atlantic Ridge.

In this context, we can reasonably infer and logically deduce that Event A is a geological event which most likely represents volcanic eruption because it occurred at both convergent and divergent boundary.

Furthermore, a convergent boundary simply refers to a region where lithosphere or crust is sinking into the mantle. Also, an example of a convergent is a region where subduction zones or collisions occur such as the west coast of South America.

In conclusion, a transform boundary simply refers to a boundary that is normally devoid of volcanism, but allows for the occurrence of earthquakes.

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Protons, neutrons and electrons that carbon-14 have if it has a neutral charge is 6 electrons, 8 neutron, and 6 proton.

The total of an element's protons plus neutrons is that element's mass number. One atomic mass unit, or amu, roughly equals the weight of neutrons and protons. While atomic number equal to proton and electron.

The proton can be calculate as follows:

C−14 has atomic no = 6 and mass no = 14.

so

No of electrons = No of protons = atomic no = 6

No of neutron = mass no-atomic no = 14−6=8

Therefore,  Protons, neutrons, and electrons that carbon-14 have if it has a neutral charge is 6 electrons, 8 neutron, and 6 proton.

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We need to take 5ul of stock solution and add it to 5ul of diluent to achieve a final concentration of 100ug/L.

To solve this problem, you will need to create a stock solution of the chemical substance and then dilute it to the desired concentrations. Here's one way you could approach it:

Create a stock solution by dissolving the 5mg of powder in a solvent with a 2g/L solubility. We know that the solubility of the substance is 2g/L, so we can use the formula:

Stock solution concentration = (mass of substance) / (volume of solvent)

In this case, the mass of the substance is 5mg and the volume of solvent is 1L. So, the stock solution concentration is:

5mg / (1L) = 5mg/L

Dilute the stock solution to the desired concentration for the first dose of 10ug/L. To do this, we can use the formula:

Desired concentration = (volume of stock solution) / (volume of diluent)

In this case, we want a final concentration of 10ug/L, so we'll let the volume of stock solution be x and the volume of diluent be (5ul-x). Then we can set up the equation:

10ug/L = (x) / (5ul-x)

Solving this equation:

x = 0.5ul

Therefore, we need to take 0.5ul of stock solution and add it to 5ul of diluent to achieve a final concentration of 10ug/L

Dilute the stock solution to the desired concentration for the second dose of 100ug/L. Using the same formula as before:

Desired concentration = (volume of stock solution) / (volume of diluent)

In this case, we want a final concentration of 100ug/L, so we'll let the volume of stock solution be y and the volume of diluent be (10ul-y). Then we can set up the equation:

100ug/L = (y) / (10ul-y)

Solving this equation:

y = 5ul

Therefore, we need to take 5ul of stock solution and add it to 5ul of diluent to achieve a final concentration of 100ug/L

So, you can create a stock solution by dissolving 5mg of powder in a solvent with 2g/L solubility and obtain a stock solution of 5mg/L. With this stock solution, you can create two dilutions, the first one is 10ug/L by adding 0.5ul of stock solution to 5ul of diluent, and the second one is 100ug/L by adding 5ul of stock solution to 5ul of diluent.

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The temperature must be greater than 50.5°C and less than 100°C.

What is temperature ?

Temperature is a physical property that is used to measure the average kinetic energy of particles in a system, such as a gas, liquid, or solid. It is measured in units of degrees on the Celsius, Fahrenheit, or Kelvin scales.

Temperature is related to the average kinetic energy of particles in the system, and is affected by the number of particles, their mass, and the strength of their interactions.

Which temperature range is typical?

Core temperature is 98.6 F on average (37 C). However, the average body temperature might be anywhere from 97 F (36.1 C) to 99 F (37.2 C) or higher. Depending on the period of year or how busy you are, your body temperature may change. In general, elderly people's temperature are lower than those of younger people.

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