Suppose that when you exercise, you consume 100 g of glucose and that all the energy released as heat remains in your body at 37 c. what is the change in entropy of your body?

Answer:

A. dust

Explanation:

Answer: Probably why are you wearing it and why do you have it on

Explanation:

Answer:

remove it, tuck it under ur shirt

Explanation:

The position at which force is equal to 0 is +1 and -1.

The potential energy of the function is U.

U = 3x + 1 x²

Force is F.

F = 0

[tex]F = \frac{ - dU}{dx}[/tex]

[tex]F= \frac{ - d(3x + 1x ^{2} }{dx} [/tex]

= ( -3 - 3 x²)

= -3 ( 1+ x²)

As the force is zero.

The position at which force is equal to 0 is,

0 = -3 ( 1 + x ²)

[tex]x = \sqrt{ 1} [/tex]

x = 1

Therefore, the position at which force is equal to 0 is +1 and -1.

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API assigns a default value of Hs/D = 0.5 and an assumption of αR = αS , resulting in the  32.7 35.2 42.1 50.6 59.6 67.2 70.3 69.2 62.6 51.1 41.2 34.5.

Communication between two or more computer applications is made possible via application programming interfaces (APIs). It is a kind of software interface that provides a service to other software. An API specification is a document or a standard that outlines how to create or use a connection or interface of this type. The term "implement" or "expose" refers to a computer system that conforms to this standard. A specification or an implementation may both be referred to as an API.

An application programming interface, as opposed to a user interface, links computer systems to people, while a user interface does the opposite.

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The first physical test that we will do is flame test, Test the rate at which the substance catches fire.

So in flame test the white powder sample is introduced to a non-luminous, hot flame and observing the colour of the flame and observing the colour of the flame. The main concept behind the flame test is the sample atoms evaporate and since they are hot, they emit light when being in flame.

Here we are looking into the chemical change which is happening to the substance. Burning is a chemical change as new substance is formed with new properties and it cannot be reserved.

So the first physical test a forensic scientist might do is  Test the rate at which the substance catches fire.

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32 hydrogen atoms are present in a saturated open chain hydrocarbon has 15 carbon atoms.

Saturated hydrocarbons have only single bonds between carbon atoms.

The carbon atoms are saturated with hydrogen as many hydrogen atoms as possible.

Alkanes are saturated hydrocarbons.

General formula for alkanes is CₓH₂ₓ₊₂.

x is the number of carbon atoms in hydrocarbon.

x = 15; the number of carbon atoms in the hydrocarbon

The number of hydrogen atoms in the hydrocarbon = 2 × 15 + 2

The number of hydrogen atoms in the hydrocarbon = 32

Hydrocarbons can form open chains, branched chains and rings.

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In a sample of dichloromethane intermolecular forces that will be present are dispersion interactions and dipole - dipole forces.

There are two kinds of Van der Waals forces: weak dispersion interactions and stronger dipole-dipole forces.

Intermolecular forces are the forces between molecules or particles.

The London dispersion force is the weakest intermolecular force.

Dispersion force is also called an induced dipole-induced dipole attraction.

The London dispersion force (intermolecular force) is a temporary attractive force between molecules.

There are several types of intermolecular forces: hydrogen bonding, ion-induced dipole forces, ion-dipole forces andvan der Waals forces.

In the molecule of dichlormethane (CH₂Cl₂) there are dipole-dipole forces between negatively charged chlorine atom from one molecule of the compound and positively charged hydrogen atom of another molecule of the compound.

Missing options: dipole-dipole interactions, hydrogen bonding, dispersion forces.

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Answer:

Explanation:

14.74

The use of phenyl isothiocyanate, the key reagent in the Edman degradation, makes it possible to remove and identify one amino acid at a time.

In the process of Edman degradation, Phenyl isothiocyanate is exposed by the protein, which then tends to react with the uncharged alpha-amino group present on the first amino acid which results in the formation of an intermediate molecule. The intermediate molecule of protein thus formed now contains an amino acid that is labeled.

Edman added Phenyl isothiocyanate as it creates a phenyl thiocarbamoyl derivative complex with N-terminal. Then the N-terminal is made to cleave under certain acidic conditions which are harsh, which creates a cyclic complex of phenylthiohydantoin PTH type of amino acid.

In general, it does not damage the structures of protein and then exits out two peptide constituents. This method can be again repeated for the remaining residues, which separates only one residue at a time. Thus phenyl isothiocyanate helps in the removal and identification of one particular amino acid at a time in Edman degradation.

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The molecular formula of a compound is C₂H₂O₄.

Take 100 grams of compound:

1) ω(C) = 26.7% ÷ 100% = 0.267

m(C) = ω(C) × m(compound)

m(C) = 0.267 × 100 g.

m(C) = 26.7 g.

n(C) = m(C) ÷ M(C).

n(C) = 26.7 g ÷ 12 g/mol.

n(C) = 2.22 mol; amount of carbon

2) ω(H) = 2.2 % ÷ 100% = 0.022

m(H) = 0.022 × 100 g.

m(H) = 2.2 g.

n(H) = 2.2 g ÷ 1 g/mol.

n(H) = 2.2 mol; amount of hydrogen

3) ω(O) = 71.1 % ÷ 100%.

ω(O) = 0.711

m(O) = 0.711 × 100 g

m(O) = 71.1 g

n(O) = 71.1 g ÷ 16 g/mol

n(O) = 4.4 mol; amount of oxygen

4) n(C) : n(H) : n(O) = 2.2 mol : 2.2 mol : 4.4 mol /2.2 mol.

n(C) : n(H) : n(O) = 1 : 1 : 2

M(CHO₂) = 45 amu; empirical formula

90 amu ÷ 45 amu = 2 CHO₂

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The carbon dioxide concentration in the pre-industrial atmosphere was around 280 ppm but has increased to around 400 ppm today.

Burning fossil fuels for electricity production and transportation, making cement, destroying forests, farming, and many other activities all contribute to CO2 pollution. The planet's atmosphere warms steadily as a result of the presence of CO2 and other greenhouse gases, which trap heat that would otherwise radiate from the surface and escape into space. This warming of the atmosphere triggers a variety of weather changes, such as periods of extreme heat, drought, and wildfire activity, as well as heavier precipitation, flooding, and tropical cyclone activity.

The effects of greenhouse gas pollution on the world's oceans include increasing sea surface temperatures, rising sea levels and increased carbon absorption, making seawater more acidic, deoxygenating the oceans and making it harder for some marine organisms to survive.

Hence,the CO2 concentration has increased in todays atmosphere.

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8.22 g ca (no3) Enough water is used to dissolve 2 to create a 0.250 l solution.

The solution's molarity is 0.050/0.250 M, or 0.2 M.

How is Molar concentration is defined?

The term "molar concentration" is used to define the concentration of a chemical species, specifically a solute, in a solution. It denotes the quantity of a substance per unit volume of solution. Other synonyms for this phrase include quantity, substance concentration, and molarity.

M = n/V

where,  n = no of moles of solute

V = volume of solution

and, M = molarity of the solution.

Molecular weight of Ca(NO3)2 = 164g = 1 mole pf calcium nitrate

Thus, 8.22 g  Ca(NO3)2 = 8.22/164 moles. = 0.050 mole

Volume(given) = 0.250l

Therefore, Molarity of the given solution = 0.050/0.250 M = 0.2 M

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The nurse should administer 0.5ml of meperidine hydrochloride injection.

Meperidine hydrochloride is an analgesic drug which acts on the central nervous system used for the treatment of moderate to severe pain which requires opioid treatment. It is a very strong pain killer and sometimes has severe side effects like mood swings, nausea, etc. it may also lead to addiction and thus needs to be taken only in the dosage prescribed by a physician.

Given:

Stock concentration: 100mg/ml

Working concentration: 50mg

To find:

Volume = ?

Formula:

Volume = Working concentration / stock concentration

Calculations:

Volume = 50 / 100

Volume = 0.5ml

Result:

0.5ml of the meperidine hydrochloride injection should be administered by the nurse.

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Knowledge of chemistry help you be a more informed citizen in many ways because it is the foundation of our world.

So,Society as we know it, has been greatly influenced by chemistry, from the creation of stronger materials for large-scale construction to the kind of cosmetics you use on a daily basis.

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Answer:

Physical

Explanation:

The volume occupied of ethyl alcohol  with a density of 0.789 g/ml and a mass of  1.5 g is: 1.9011 ml

The density formula and the procedure we will use is:

d = m/v

Where:

Information about the problem:

Applying the density formula and clearing the volume we get:

d = m/v

v = m/ d

v = 1.5 g/0.789 g/ml

v = 1.9011 ml

It is a physical quantity that expresses the ratio of the body mass to the volume it occupies.

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Answer:

covalent bonds

Explanation:

because the electrons are shared between atoms therefore the binds are very directional

When a hydrocarbon undergoes combustion it produces carbon dioxide (CO2), water (H2O), heat, and light.

The carbon compounds which contain only carbon and hydrogen are called hydrocarbons.

Examples of hydrocarbons are compounds like CH4, C2H6, C2H4, C2H2, etc.

Based on the presence of double bonds/triple bonds, the hydrocarbons are of three types- alkanes, alkenes, and alkynes, as shown in the image.

Alkanes are those hydrocarbons that do not contain any double bond.

Alkenes are those compounds that contain at least one double bond between carbon atoms while alkynes contain a triple bond.

All the hydrocarbons mentioned above give the same reaction on their combustion that is

Hydrocarbon + O2 = CO2 + H2O + HEAT + LIGHT

For example,

CH4 + O2 = CO2 + H2O + Heat + Light

Hence, when a hydrocarbon undergoes combustion it produces carbon dioxide (CO2), water (H2O), heat, and light.

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A lot of the fundamental ideas of thermodynamics were established with the help of the kinetic theory of gases, a straightforward yet historically significant classical model of the thermodynamic behavior of gases.

According to kinetic molecular theory At a temperature of a confined Gas rises which of the following characteristics of the gas molecules increase

The macroscopic characteristics of gases, such as volume, pressure, and temperature, as well as their transport characteristics, such as viscosity, thermal conductivity, and mass diffusivity, are all explained by the kinetic theory of gases. The model also takes into consideration associated phenomena like Brownian motion.

According to the kinetic molecular theory, collisions between gas particles happen in a way that is completely elastic. Consequently, as the temperature rises, the speed at which the gas molecules move also does so. First, the gas molecules' conviction energy rises more quickly. The faster the molecules move, the more frequently they will crash with the container's walls, raising the gas pressure.

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Answer:

Answer:

Hope this helps :)

When a person is holding a basketball, there is potential energy, and when the ball is dropped/bounced then there is potential energy. The basketball has the highest amount of kinetic energy when it is falling and bounces on the floor.

Carbon with sp³-hybrid orbitals is the least electronegative.

Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.

Carbon can form chemical bonds with sp, sp² and sp³-hybrid orbitals.

The more percentage s-orbital in hybrid orbitals of carbon, the greater is the electronegativity of the carbon atom.

sp³-hybrid orbital has 25% character of s-orbital, so it is the least electronegative.

sp²-hybrid orbital has 33% character of s-orbital.

sp-hybrid orbital has 50% character of s-orbital.

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The empirical formula of a compound is C₂H₅O.

Take 100 grams of compound:

1) ω(C) = 53.31% ÷ 100% = 0.5331

m(C) = ω(C) × m(compound).

m(C) = 0.5331 × 100 g.

m(C) = 53.31 g.

n(C) = m(C) ÷ M(C).

n(C) = 53.31 g ÷ 12 g/mol.

n(C) = 4.44 mol; amount of carbon

2) ω(H) = 11.18 % ÷ 100% = 0.1118

m(H) = 0.1118 × 100 g.

m(H) = 11.18 g.

n(H) = 11.18 g ÷ 1 g/mol.

n(H) = 11.18 mol; amount of hydrogen

3) ω(O) = 35.51 % ÷ 100%.

ω(O) = 0.3551

m(O) = 0.3551 × 100 g

m(O) = 35.51 g.

n(O) = 35.51 g ÷ 16 g/mol.

n(O) = 2.22 mol.

4) n(C) : n(H) : n(O) = 4.44 mol : 11.18 mol : 2.22 mol /2.22 mol.

n(C) : n(H) : n(O) = 2 : 5.03 : 1

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Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density is a characteristic property of a substance and doesn't depend on the amount of substance.

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The production of uric acid is advantageous to birds because uric acid is safe to store, has little toxicity, and uses little water to excrete when an embryo grows in an egg.

Uric acid is a safe, nontoxic compound that is produced by birds. It is advantageous to birds because it can be stored safely, uses little water to excrete, and is little toxic to embryos. Uric acid is produced as a waste product of purine metabolism and is typically excreted in the urine. However, in birds, uric acid is secreted in the feces. Uric acid has a number of benefits for birds. First, it is safe to store. Second, it uses little water to excrete. Third, it is little toxic to embryos. Uric acid is produced by the liver and is excreted by the kidneys. It is a waste product of purine metabolism and is typically excreted in the urine. However, in birds, uric acid is secreted in the feces. Uric acid has a number of benefits for birds. First, it is safe to store. Second, it uses little water to excrete. Third, it is little toxic to embryos.

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Amine nitrogen atom containing an electron pair and bonded to three different groups is technically a stereogenic center, the chirality of the amine nitrogen is often ignored due to its four bonds are needed to define stereoganic center.

A stereogenic center is any atom that gives different isomers when atoms or groups attached to it are exchanged. These isomers are called stereoisomers because the structures of the molecules are the same but their spatial arrangements are different from each other.

Chirality only exists with the tetrahedral carbon atoms Because there Is usually rapid inter conversion between the two isomeric forms at room temperature. Because there usually slow Inter conversion between the two Isomeric forms at room temperature.

Atom bearing groups such that interchanging of any two groups leads to a stereoisomer, plane of symmetry so that there are no stereoisomers tetrahedral atom enantiomer, non-superimposable mirror image tetrahedral atom bonded to four different substituents.

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The phosphorylation of glucose occurs first in the glycolysis process. ADP + Glucose-6-phosphate + Glucose (6C) is the product of the same process.

Describe glycolysis.

The metabolic process known as glycolysis turns the molecule glucose (C6H12O6) into pyruvate (CH3COCO2H).

The high-energy molecules adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide are produced using the free energy produced during this process (NADH).Glycolysis is a set of ten enzyme-catalyzed reactions. Carbohydrates' binding energy is preserved. ATP retention

Glycolysis is one metabolic pathway that doesn't require oxygen (In anaerobic conditions pyruvate is converted to lactic acid). Numerous species commonly undergo glycolysis, indicating that it is an ancient metabolic pathway.

Thus, the reaction involved in the first reaction of glycolysis is

Glucose (6Carbons) + ATP → Glucose-6-phosphate + ADP.

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The solution of potassium hydroxide with a volume of 252 ml and a concentration of 0.960 m  has: 0.24192 mol

To solve this problem, the formula and the procedure that we have to use is:

m = n(solute)/v(solution) L

Where:

Information about the problem:

By converting the volume units from (ml) to (L) we have;

v(solution) = 252  mL * 1L/1000 mL

v(solution) = 0.252 L

Applying the molarity formula, and clearing the moles we get:

m = n(solute)/v(solution) L

n(solute) = m * v(solution) L

n(koh) = 0.960 mol/L * 0.252 L

n(koh) = 0.24192 mol

In chemistry a solution is known as a homogeneous mixture of two or more components called:

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Complete combustion of 8.00 g of a hydrocarbon produced 25.7 g of CO₂. The empirical formula for the hydrocarbon is C₄H₇.

The empirical formula of the molecule is the simplest whole number of atoms of a compound.

Moles of C in the compound:  27.8 g CO2 x 1 mol CO2/44 g x 1 mol C/mole CO2 = 0.632 moles of C

Moles of H in the compound:  9.96 g H2O x 1 mol H2O/18 g x 2 mol H/mol H2O = 1.11 moles of H

mass C = 0.632 mol C x 12 g/mol = 7.58 g C

mass H = 1.11 mol H x 1 g/mol = 1.11 g H

Sum = 8.69 g total mass (close enough to 8.70 so our assumption of no oxygen is correct)

To find the lowest whole number of moles, we can divide both by the lowest value (0.632) to obtain.

moles C = 0.632/0.632 = 1.0

moles H = 1.11/0.632 = 1.75

Now to get a whole number for H we can multiply both by 4 to obtain

moles C = 4

moles H = 7

Thus, the Empirical formula is C₄H₇.

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