Plants and animals interact with organic molecules differently. Explain how.

Answer:

a) The predominant Brownstead-Lowry acid- base is perchloric acid

b) A conjugate acid base pair is HClO4 and ClO4^-

c) forward reaction is favored and equilibrium position lies towards the far right

Explanation:

The molecular equation is;

HClO4(aq) + NaH2PO4(aq) -----> H3PO4(aq) + NaClO4(aq)

The net ionic equation of the reaction is;

H^+(aq) + H2PO4^-(aq) ----> H3PO4(aq)

The predominant Brownstead-Lowry acid- base is perchloric acid .

A conjugate acid base pair is HClO4 and ClO4^-

Since the both species; perchloric acid and sodium dihydrogen phosphate are both highly soluble in water yielding ions and also dissociate to a large extent in solution, the forward reaction is favoured leading to the formation of phosphoric acid. Remember that phosphoric acid does not easily dissociate in solution hence the forward reaction is faster than the reverse reaction and the equilibrium position lies towards the far right.

Option B: In most pantomographic units, the central ray of the X-ray beam is directed horizontally.

By aiming the central ray horizontally, the X-ray machine can rotate around the patient's head in a semi-circular motion. During this rotation, the X-ray detector and the X-ray source move simultaneously in opposite directions. This synchronized movement allows for a continuous exposure of the X-ray film or sensor, creating a panoramic image.

The horizontal positioning of the central ray enables the panoramic X-ray machine to capture a wide field of view that includes both the upper and lower jaws, teeth, surrounding bone structures, and other important anatomical features. This comprehensive image assists dental professionals in evaluating the overall dental and skeletal structures, identifying dental abnormalities, assessing impacted teeth, examining the temporomandibular joint, and detecting potential pathology.

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Some people with alcohol dependence report that just the smell of alcohol creates a powerful sense of well-being, increasing the desire to drink the alcohol because of The UCR to the UCS of alcohol is a sense of well-being, and the CS of alcohol is likely to eventually elicit the CR of a sense of well-being.

Without any prior conditioning, UCS automatically cause (UCR) a sense of well-being. Alcohol (UCS) causes the UCR.

The UCR (feeling of well-being) is likely to eventually be evoked by the smell of alcohol because it is frequently coupled with actual alcohol (UCS). The UCR to the UCS of alcohol is a sense of well-being, and the CS of alcohol is likely to eventually elicit the CR of a sense of well-being.

The conditioned response will be eliminated by repeatedly pairing the CS (alcohol smell) with the UCS (alcohol) (CR). As a result, extinction has occurred.

Your question is incomplete but most probably your full question was

Some people with alcohol dependence report that just the smell of alcohol creates a powerful sense of well-being, increasing the desire to drink the alcohol. Explain this reaction using a classical conditioning model, and describe one possible way to decrease the reaction. Use the following terms in your answer:

A. Unconditioned stimulus

B. Unconditioned response

D. Conditioned stimulus

E. Conditioned response

F. Extinction

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Answer:

Element Properties

atomic number 47

atomic weight 107.868

melting point 960.8 °C (1,861.4 °F)

boiling point 2,212 °C (4,014 °F)

specific gravity 10.5 (20 °C [68 °F])

oxidation states +1, +2, +3

electron configuration [Kr]4d105s1

hope that helps

Answer:

355Joules

Explanation:

The amount of heat absorbed can be calculated using the formula:

Q = m × c × ∆T

Where;

Q = amount of heat absorbed in joules

m = mass of substance in grams

c = specific heat capacity of solid (0.727 J/g°C)

∆T = final temperature - initial temperature (°C)

According to the information provided in this question;

Q = ?

m = 12.3g

∆T = 62.1°C - 22.4°C = 39.7°C

c = 0.727 J/g°C

Using Q = m × c × ∆T

Q = 12.3 × 0.727 × 39.7

Q = 355.001

Q = 355Joules

Hence, 355J of heat was absorbed

When you add acid to a starch solution, a chemical reaction occurs. This reaction is known as hydrolysis, where water molecules are split into hydrogen ions (H+) and hydroxide ions (OH-). The hydrogen ions from the acid combine with the starch molecules to break down the starch into simpler forms, such as glucose.

At the molecular level, starch is a complex carbohydrate made up of long chains of glucose molecules. When acid is added, the acid provides the hydrogen ions needed to break the bonds between the glucose molecules. This leads to the breakdown of starch into smaller glucose units.

On the other hand, when you mix glucose with water, you have a simple sugar dissolved in a liquid. The glucose molecules are already in their simplest form and can easily dissolve in water.

Therefore, when you compare the acid-starch reaction to the glucose-water mixture, the acid-starch reaction more closely resembles the starch-water mixture. In both cases, the starch is broken down into simpler forms.

In summary, when acid is added to a starch solution, it undergoes hydrolysis, breaking down the starch into smaller glucose units. This process is similar to the breakdown of starch in the presence of water, as the acid provides the necessary hydrogen ions for the reaction.

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Answer:

produced whenever a charged particle, such as an electron

Explanation:

Electromagnetic radiation is produced whenever a charged particle, such as an electron, changes its velocity—i.e., whenever it is accelerated or decelerated. The energy of the electromagnetic radiation thus produced comes from the charged particle and is therefore lost by it.

The hydrated ions are free to move around when ionic salts dissociate in aqueous solutions. Their movement, however, is random, and there is no charge.

After separating a solid substance into its ions, the ions are ready for reactions. When a compound is solid, the ions are held together by electrostatic attractions. To allow ions to move freely, it must first be dissolved in solution. Consider the reaction between sodium chloride and silver nitrate. Both of these compounds are commonly available in solid form. First, you would dissolve both solids in a solution, in this case water. (See Equations 1 and 2)

Once the solid has dissolved and separated into its ions in solution, these ions are ready to react in the chemical reaction (Equation 3).

Keep in mind that the AgNO3(aq) and NaCl(aq) reactants demonstrate that the ions are in solution. In other words, AgNO3(aq) is the same as Ag+(aq)+NO3(aq), and NaCl(aq) is the same as Na+(aq)+Cl (aq). The equation in Equation 3 represents a double displacement reaction, which means that cations in the reactants exchange anions to form the products. A precipitate is formed in the laboratory that we identify as silver chloride.

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An electrochemical cell is made up of two different metal electrodes in an electrolyte and is used to produce an electric current through an oxidation-reduction reaction. Fe2+(aq) + -Fe3+(aq) option(a).

The half-reaction that takes place in the reduction of an electrochemical cell is referred to as the reduction half-reaction. The half-reaction that occurs in the oxidation half-reaction is known as the oxidation half-reaction. In the given electrochemical cell, the reduction half-reaction is Fe3+(aq) + e- ⇌ Fe2+(aq). The first step in identifying the reduction half-reaction is to distinguish between the anode and cathode. The anode is the electrode at which oxidation occurs, while the cathode is the electrode at which reduction occurs. The zinc electrode in the given cell is the anode, and it loses electrons, becoming Zn2+(aq). The iron electrode is the cathode, and it gains electrons, becoming Fe2+(aq). Fe3+(aq) + e- ⇌ Fe2+(aq)Fe3+(aq) undergoes reduction in the electrochemical cell. Therefore, option a is the right answer. The standard reduction potential for a half-reaction can also be used to predict which half-reaction will be reduced in a cell. The reaction with a more positive E° value (standard reduction potential) is reduced, while the reaction with a lower E° value is oxidized.

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the closest value is C, 85.

hope it helps!!!!

85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population. Therefore, the correct option is option C.

A population is the entire set of people in a group, whether that group is a country or a collection of people who share a certain trait. A population is the group of people where a statistical sample has been collected in statistics. Hence, a population is any collection of people who have something in common.

A statistically substantial chunk of a population, rather than the full population, may also be referred to as a sample. For this reason, the standard deviation, meaning standard error, of a statistical study of a sample from the full population must be disclosed. Only a population-wide analysis would have zero standard deviation. 85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population.

Therefore, the correct option is option C.

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Answer:

The large the atomic radius the more the metallic character of elements

Explanation:

The atomic radius is related to the metallic character in a way that the larger the atomic radius, the more metallic a body becomes.

Therefore, as we go down a group, metallic character increases.

Answer:

it's because the liquid in the bottle is supercooled

Answer:

D

Explanation:

it seems the most logical

Answer:

B

Explanation:

6.00 ml

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Compared to the atomic radius of a sodium atom, the atomic radius of a magnesium atom is smaller. The smaller radius is primarily a result of the magnesium atom having two more electrons in its outermost energy level than the sodium atom.

These extra electrons cause the attractive forces between the nucleus and the electrons to be weaker in the magnesium atom, resulting in a smaller atomic radius. The atomic radius of an element is a measure of the size of its atoms.

The radius is usually measured in picometers (pm), and it corresponds to half the distance between the nuclei of two atoms of the same element that are just touching each other. The atomic radius of an element decreases as you go down a group in the periodic table.

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Answer:

1.18

Explanation:

correct answer on ck-12

divide 120 kpa by 101 (1 kpa per 101 atm) and you get 1.18

If a vessel filled with gas is sealed such that the inside pressure is 120kPa then pressure in atm is 1.18.

Pressure is an external force which will be applied on any substance or matter to change in its position, state or condition.

As we know that realation between the kilopascal (kPa) unit and atmospheric pressure (atm) unit of gases will be represented as:

1 atm = 101.325 kPa

or 1 kPa = 1/101.325 atm

Given that, pressure inside the vessel = 120 kPa

Here the conversion factor is 1/101.325, now we multiply this factor to the above value and we get

120 kPa = 120×1/101.325 = 1.18 atm

Hence pressure of gas in atm is 1.18atm.

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The chemical reactivity of the core and valence electrons in an atom or ion varies from each other. Valence electrons and core electrons are types of electrons. The key difference between them is their level of engagement in chemical reactions.

Valence electrons are the electrons on the outermost shell of an atom, whereas core electrons are the electrons on the inner shells of an atom. An atom's chemical properties are determined by the valence electrons. The valence electrons' total number and distribution in the outer shell determine the element's reactivity. The core electrons, on the other hand, are highly stable and therefore less reactive.

As a result, it requires a great deal of energy to remove core electrons from the atom's innermost shell. When an ion is formed, it is the valence electrons that determine the ion's chemical properties and reactivity because they are the electrons that are either lost or gained. When an atom or ion is content loaded with valence electrons, it is less reactive than an atom or ion with fewer valence electrons in the outer shell.

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The most nearly mass of combustion products produced is 41 g (Option C).To determine the mass of combustion products, we need to calculate the moles of propane and oxygen consumed in the reaction and then use the stoichiometry to determine the moles and mass of the combustion products.

Propane (C3H8) has a molecular weight of 44 g/mol. The balanced chemical equation for the combustion of propane is:

C3H8 + 5O2 → 3CO2 + 4H2O

From the equation, we can see that for every mole of propane, 5 moles of oxygen are consumed.

Given that we have 11 grams of propane, we can calculate the moles of propane:

Moles of propane = Mass of propane / Molecular weight of propane

Moles of propane = 11 g / 44 g/mol = 0.25 mol

Since the stoichiometric ratio between propane and oxygen is 1:5, the moles of oxygen consumed will be:

Moles of oxygen = Moles of propane * 5 = 0.25 mol * 5 = 1.25 mol

Next, we can determine the moles and mass of the combustion products. From the balanced equation, we see that for every mole of propane, we get 3 moles of carbon dioxide (CO2) and 4 moles of water (H2O).

Moles of CO2 = Moles of propane * 3 = 0.25 mol * 3 = 0.75 mol

Moles of H2O = Moles of propane * 4 = 0.25 mol * 4 = 1.00 mol

To calculate the mass of the combustion products, we need to multiply the moles of each product by their respective molecular weights:

Mass of CO2 = Moles of CO2 * Molecular weight of CO2 = 0.75 mol * 44 g/mol = 33 g

Mass of H2O = Moles of H2O * Molecular weight of H2O = 1.00 mol * 18 g/mol = 18 g

Finally, we can add up the masses of CO2 and H2O:

Mass of combustion products = Mass of CO2 + Mass of H2O = 33 g + 18 g = 51 g

Therefore, the mass of combustion products produced is closest to 51 g, which corresponds to option (D).

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Answer:

Four on three

Explanation:

We so therefore the volume of gas change by a factor of four on three. So the correct option is option d. That is four x 3 is the right answer.

The anion of the weak acid is a product, not a spectator ion.

The weak acid reactant must appear as an undissociated, intact molecule in the equation.

How do the equations for the reaction between a strong acid and a strong base differ?

How do the equations for a strong acid/strong base and a weak acid/strong base neutralise one another? The weak acid's anion is a product and not a spectator ion. The weak acid reactant must show up in the equation as an undissociated, complete molecule.

The weak acid's anion is a produced ion, not a spectator ion. The equations are same. The weak acid reactant must be represented in the equation as an undissociated, complete molecule.

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Antiseptics is a chemical germicides that has been formulated for use on the skin and is registered and regulated by the food and drug administration.

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Answer:

B.) False

Explanation:

The mass number is determined by adding the number of protons and neutrons in an element's nucleus. Since carbon has 6 protons and 6 neutrons, the mass number is 12.

The atomic number is determined by the number of protons in an element's nucleus. Since carbon has 6 protons, the atomic number is 6.

Alpha particles are constituted of two neutrons and two protons like helium atoms. The motion of particles differs as protons repel, while neutrons do not. Thus, option D is correct.

Alpha particles are said to be the radiations that resemble a helium atom in having two neutrons and two protons in their nucleus. They result from the alpha decay of the radioactive elements.

The alpha particle has been constituted of a +2 charge and mass equivalent to the sum of the protons and neutrons which is 4 amu. The protons and alpha particles are positively charged species.

Due to the positive charge on alpha particles, they get repelled by the nuclei containing more protons. Whereas, neutrons do not affect particles as they are neutral and lack charge.

Therefore, in option D. the protons repel the alpha particle.

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The motion of the alpha particles differ because protons repel the particles, while neutrons do not. Option 4 is the answer.

The behavior of alpha particles around nuclei is affected by electromagnetic forces arising from the positively charged protons within the nucleus. When the nucleus comprises 20 protons and 100 neutrons, the presence of more neutrons mitigates the repulsion between alpha particles and protons, enabling the particles to approach closely.

Conversely, if the nucleus contains 100 protons and 20 neutrons, heightened repulsion from the greater number of protons hinders the proximity of alpha particles to the nucleus.

Neutrons, with no charge, evade these repulsive forces, allowing them to mediate the interactions and facilitate closer particle approach. In essence, the differing proton-to-neutron ratios influence the motion of alpha particles around nuclei.

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Answer:

Knowing the moles of the given sample, we can now calculate the number of molecules by using Avogadro's number (6.022×1023) ( 6.022 × 10 23 ) . The answer is 7.71×1022H2Omolecules 7.71 × 10 22 H 2 O m o l e c u l e s .

Explanation:

Materials generally become warmer when they are "absorbed" by light, this statement is more detailed. So, the correct answer is "absorbed by them."

Explanation: When a material absorbs light, it receives energy from the light, which leads to an increase in temperature. When light is absorbed by a material, the energy of the light is transformed into internal energy in the material. The temperature of a material can increase as a result of this energy absorption.

This is due to the fact that the increased internal energy of the molecules in the material causes them to vibrate more quickly and hence results in a temperature rise.

The light reflects or transmits when it passes through the material. When light reflects off a surface, it bounces back in the opposite direction. Transmitted light travels through a material without being absorbed by it.

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Answer:

hey there !!

the mitochondrian is the cell organelle in which cellular respiration takes place and energy is produced during cellular respiration by break down of glucose in presence of oxygen to for energy units known as ATP ( adinosine tri - phosphate) molecule.

since it produces energy it is known as powerhouse of the cell.

i hope this helped.....you

Answer:

A. The energy increases the molecular motion and the kinetic energy of the substance.

Explanation:

When a substance absorbs energy, the molecules will move faster because there will be more vibrations and collisions.

As a result of more molecular motion, the kinetic energy will increase because there is more movement.

Answer:

C

Explanation:

C

Answer: it's C

204/82PB

The formula below can be used to determine how much material is left after three half-lives:

Initial amount multiplied by (1/2) equals the amount left.the number of half-lives is n.After three half-lives, the quantity that would be left if 25 g of each sample were present would be:For substance A, the remaining quantity is 25 g times (1/2)3 = 3.125 g.For substance B, the remaining quantity is 25 g times (1/2)3 = 3.125 g.For substance C, the remaining quantity is 25 g times (1/2)3 = 3.125 g.Therefore, each drug would only have 3.125 g left after three half-lives.We must compare their half-lives to ascertain which material would decompose the slowest. The disintegration happens more gradually the longer the half-life.The half-life of substance A is one day, while substance B has a10 days, while the half-life of substance C is 100 days. Since Substance C has the largest half-life, its decomposition would therefore take the longest.This can be explained by the fact that the half-life controls the pace of disintegration. The chemical takes longer to degrade the longer the half-life and the slower the rate of disintegration. Since Substance C has the largest half-life, its decomposition would therefore take the longest.


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Answer:

Based on the search results [1], [3], and [6], the calculation to determine the empirical formula of butane gas if it consists of 81.82% carbon and 18.18% hydrogen is:

Step 1: Assume 100 g of the compound, so there are 81.82 g of carbon and 18.18 g of hydrogen.

Step 2: Convert the mass of each element to moles using their molar masses.

- Carbon: 81.82 g C × (1 mol C/12.01 g C) = 6.82 mol C

- Hydrogen: 18.18 g H × (1 mol H/1.01 g H) = 18.0 mol H

Step 3: Divide each amount of moles by the smallest number of moles to get the simplest whole-number ratio.

- Carbon: 6.82 mol C ÷ 6.82 = 1 mol C

- Hydrogen: 18.0 mol H ÷ 6.82 = 2.64 mol H ≈ 3 mol H

Step 4: Write the empirical formula using the integers found in the previous step.

- The empirical formula of butane gas with 81.82% carbon and 18.18% hydrogen is CH3.

Therefore, the empirical formula of butane gas when it contains 81.82% carbon and 18.18% hydrogen is CH3.

Explanation: