What particle is emitted (known as an alpha particle)

Answer:

True

Explanation:

(with a manganese dioxide catalyst)

Answer:

Total minute ventilation is comprised of dead space plus alveolar ventilation. Minute ventilation is respiratory frequency (14 breaths per minute) multiplied by tidal volume (450 mL/breath) = 6300 mL/min.

Explanation:

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Answer:

poor access to health care providers

Explanation:

without health care providers you cant get tested.

Answer:

c

Explanation:

kw=h+bls

Answer:

Sugar dissolves in water because energy is given off when the slightly polar sucrose molecules form intermolecular bonds with the polar water molecules. The weak bonds that form between the solute and the solvent compensate for the energy needed to disrupt the structure of both the pure solute and the solvent.

Explanation:

The sugar cubes soften when placed in the water and begin to dissolve. The sugar cube in the hot water dissolves the fastest. Sugar will dissolve faster when you stir the solution quickly because the act of stirring increases kinetic energy which increases the temperature.

The claim that the atomic model should not be continually changed is based on the principle of scientific stability and coherence. Continually changing the atomic model can undermine the stability of scientific understanding and impede the development of robust theories.

The claim that the atomic model should not be continually changed is based on the principle of scientific stability and coherence. Continually changing the atomic model can undermine the stability of scientific understanding and impede the development of robust theories. The current atomic model, based on quantum mechanics and the understanding of subatomic particles, has provided a consistent framework that has successfully explained and predicted numerous phenomena. This model has undergone rigorous testing, verification, and refinement over the years. While scientific progress and new discoveries are essential, it is important to maintain a balance between incorporating new evidence and maintaining a stable foundation. Frequent changes to the atomic model can lead to confusion and make it difficult to build upon existing knowledge. It is preferable to refine and expand upon the current model as new evidence emerges, rather than discarding it entirely. This approach ensures continuity and progress in scientific understanding while maintaining a coherent framework for further exploration.

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Answer:

Endoplasmic reticulum, Golgi apparatus, Nucleus, Storage Organelles, and Energy - Producing Organelles.

Explanation:

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Answer:

C is my answer

Explanation:

none explain

A potential disadvantage of an enzyme having a very high affinity for its substrate, other things being equal, is that the enzyme-substrate complex will be in a deep energy well (option C).

This means that the enzyme-substrate complex will be more stable, which could potentially slow down the rate of the reaction as it takes more energy for the complex to transition to the product state.

Option A is not accurate, as pulling the substrate out of the solution does not necessarily decrease the driving force for the forward reaction.

Option B is also not accurate, as high affinity does not inherently cause spatial distortion of the enzyme.

Option D is incorrect, as tight binding does not necessarily result in a higher energy transition state complex.

Therefore, the correct answer is not E, as not all of the options are accurate.

The most suitable answer is option C: The enzyme-substrate complex will be in a deep energy well, meaning that the enzyme-substrate complex will be more stable.

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Answer:

HCl is an acid, and Cl– is its conjugate base.

Explanation:

HCl is an acid, and \(Cl^-\) is its conjugate base.

The reaction that we are to consider is; HCl + H2O → \(Cl^-\)+ \(H3O^+\).

According to the Brownstead - Lowry definition of an acid, an acid is a substance that donates a proton while a base is a substance that accepts a proton.

The conjugate base of a substance is obtained by the loss of a proton from the substance.

Now, if you look at HCl and \(Cl^-\), you will notice that \(Cl^-\) is obtained from HCl by loss of a proton.

Therefore, HCl is an acid, and \(Cl^-\) is its conjugate base.

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Answer:

septembar 9 2003

Explanation:

he died in september 9 2003

Answer:

Your answer:

His cause of death was a stroke ( heart attack)

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Answer:

Chemical indicator, any substance that gives a visible sign, usually by a color change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow color to an alkaline solution.

Answer:

0.018 grams

Explanation:

The number of moles (n) in such number of atoms of Aluminum must be calculated by dividing the number of atoms (nA) by Avagadro's number i.e.

n = nA ÷ 6.02 × 10^23atoms

The number of atoms of Aluminum in this question has been given as: 3.99 x 10^20 atoms.

n = 3.99 x 10^20 ÷ 6.02 × 10^23

n = 3.99/6.02 × 10^(20-23)

n = 0.663 × 10^-3

n = 0.000663moles

Next, we convert the mole value to mass in grams by using the formula;

mole = mass/molar mass

mass = mole × molar mass

Molar mass of Al = 27g/mol

mass (g) = 0.000663 × 27

mass = 0.0179

mass of Aluminum is 0.018grams

Answer:

Molecules speed up when they get energy from other molecules and slow down when they give energy to other molecules.

Explanation:

We know from the first law of thermodynamics that energy can not be created nor destroyed.

However, according to the kinetic molecular theory, molecules collide frequently with each other. All molecules in a substance do not possess equal energy hence some molecules are more energetic than others.

When a more energetic molecule collides with a less energetic molecule, the more energetic molecule transfers energy to the less energetic molecule. The less energetic molecule speeds up while the molecule that collided with it slows down due to energy transfer from one molecule to another.

The interaction between nonpolar molecules is dispersion forces while between polar molecules like H₂O is lon-dipole forces.

lon-dipole forces can be defined as the attraction between molecules due to the interaction between opposite lons of molecules.

The distribution of electrons is asymmeric in this case.

This Interaction is seen between polar molecules.

For example-Interaction between LiNO3 and H₂O

Therefore, the interaction between nonpolar molecules is dispersion forces while between polar molecules is lon-dipole forces.

If a polar molecule induces a dipole in a neutral molecule, than such interactions are called dipole-induced dipole interactions.

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The carboxylic R-group on an amino acid behaves as an acid and loses a proton at a pH of around 7 in the majority of cells, giving the amino acid a negative charge.

The amino groups in amino acids are protonated to form ammonium ions and the carboxylic acids are ionized to their conjugate bases at neutral pH (about 7, which is the average pH of most bodily fluids and the pH at which biological events typically occur) (carboxylic ions).

One way to look at this is to imagine a water solution with a pH of 7 as a sizable acid reservoir with a constant pKa of 7. When an acid with a pKa lower than 7 (such as a carboxylic acid, which has a pKa of less than 5) dissolves in the mixture, the stronger acid will transfer a proton to the mixture and transform into the carboxylate ion.  Therefore, carboxylic acids become ionized when the pH is kept at 7

Similar to this, when an amine (often an ammonium ion with a pKa value of 10) is dissolved in water with a pH of 7, the water acts as the stronger acid, protonating the amine to create the weaker acid.  Amines are protonated to produce ammonium ions when kept at pH = 7.

Holding the pH at 7 practically means that the solution is buffered by the addition of weak acids and weak bases in sufficient concentration to prevent the H+ concentration from being significantly changed by the transfer of a few protons.

This concept works with any pH. For instance, if an amino acid is dissolved in water with a pH of 2, the resulting solution is a stronger acid than the carboxylic acid that would result from the same procedure.

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The majority of energy within an ecosystem is lost over time due to the increase in entropy. Energy is lost as heat through various processes, such as respiration and metabolic activities, as well as through waste products and excretion. This gradual loss of energy leads to a decrease in the amount of available energy within the ecosystem.

The majority of energy within an ecosystem is lost over time due to the concept of entropy. Entropy is a measure of disorder or randomness in a system. As energy is transferred and transformed within an ecosystem, it tends to become less organized and more dispersed, resulting in an increase in entropy.

Here's a step-by-step explanation of how energy is lost in an ecosystem due to entropy:

1. Energy enters the ecosystem through the process of photosynthesis, where plants convert sunlight into chemical energy.

2. This energy is then passed on to herbivores when they consume plants.

3. When herbivores are consumed by carnivores, a portion of the energy is transferred to the carnivores.

4. However, at each step of energy transfer, some energy is lost as heat through processes such as respiration and metabolic activities.

5. Additionally, energy is also lost through waste products and excretion.

6. As the energy is transferred from one trophic level to another, it becomes less concentrated. This is because not all of the energy is transferred or absorbed efficiently, and some is lost as heat.

7. The energy that is not lost as heat is eventually used by organisms for various activities, such as growth, reproduction, and movement. These activities also contribute to energy loss in the form of heat.

8. Ultimately, the energy that remains within an ecosystem after multiple transformations is relatively small compared to the initial amount of energy that entered the ecosystem.

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According to the question the new volume of the balloon is 2731.66 L.

Volume is the measure o the amount of space a object or material occupies. It is usually measured in liters, cubic meters, gallons, or cubic feet. Volume is an important concept in many fields, including physics, engineering, chemistry, and mathematics. In physics, volume is a measure of the amount of space a body occupies. In engineering, volume is used to determine the size of a tank or reservoir, the capacity of a pipe, or the amount of material needed for a construction project. In mathematics, volume is used to calculate the area of a three-dimensional shape, such as a cube, sphere, or cylinder.

The volume of a gas can be calculated using the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant (8.314 J/mol•K), and T is the absolute temperature.

Since the pressure remains constant, we can rearrange the equation to solve for V: V = nRT/P.

To solve for the new volume, we can plug in the known values:

V = (1 mol)(8.314 J/mol•K)(330.0 K)/(1 atm)

V = 2731.66 J/atm

V = 2731.66 L

Therefore, the new volume of the balloon is 2731.66 L.

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If the reaction has reached equilibrium and then the sealed reaction vessel expands, increasing the volume, the reaction would increase.

The equilibrium will change to favor the direction that produces more moles of gas when the volume is increased.

Equilibrium is a state of balance between opposing forces or actions that can be static (such as when forces are applied to a body and the resultant is zero) or dynamic (such as during a reversible chemical reaction when the velocities in both directions are equal). It can also be a state of equilibrium between the mind and the body.

In terms of economics, equilibrium occurs when supply and demand are equal. When you are composed and steady, you are in an equilibrium state.

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The change in temperature (in °c) of the copper block placed into the water is 67.7 °C

Heat loss = Heat gain

M꜀C(T꜀ – Tₑ) = MᵥᵥC(Tₑ – Tᵥᵥ)

25 × 0.38 (88 – Tₑ) = 500 × 4.184(Tₑ – 20)

9.5(88 – Tₑ) = 2092(Tₑ – 20)

Clear bracket

836 – 9.5Tₑ = 2092Tₑ – 41840

Collect like terms

836 + 41840 = 2092Tₑ + 9.5Tₑ

42676 = 2101.5Tₑ

Divide both side by 2101.5

Tₑ = 42676 / 2101.5

Tₑ = 20.3 °C

ΔT = T꜀ – Tₑ

ΔT = 88 – 20.3

ΔT = 67.7 °C

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The correct receptor pairing is acetylcholine with nicotinic receptors (ACh-nicotinic). Option A is correct.

Acetylcholine is a neurotransmitter that plays a crucial role in the nervous system. It is involved in various physiological processes, including muscle contraction, cognition, and memory.

Acetylcholine acts by binding to specific receptors called cholinergic receptors. There are two main types of cholinergic receptors: nicotinic receptors as well as muscarinic receptors.

Nicotinic receptors are ion channels that are activated by acetylcholine binding. They are named after nicotine because they can also be activated by nicotine, a compound found in tobacco. Nicotinic receptors are found in the central nervous system, autonomic ganglia, and neuromuscular junctions.

Norepinephrine is a different neurotransmitter that primarily binds to adrenergic receptors, which are a separate class of receptors. Norepinephrine does not typically bind to nicotinic receptors.

Hence, A. is the correct option.

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Answer:

*two parameters

Explanation:

Answer:

The organism has a nucleus

Explanation:

According to this question, a student makes a claim that an observed organism is not a Bacteria. Organisms have been classified into two major domains based on their nucleus. Eukaryotic organisms have a well-defined double membrane nucleus while prokaryotes do not.

The organism being observed in this question posseses a nucleus and many chloroplasts meaning that the organism is most likely an EUKARYOTE. The observations that backs the student claim is that the organism has a nucleus. Bacteria is an example of prokaryotic organisms with no nucleus in their cell.

The question requires us to calculate the energy, in joules (J), necessary to heat 83.5g of water from 26.7 °C to 75°C.

The heat energy (Q) can be calculated from the mass of the sample (m), its specific heat capacity of the substance (C) and temperature variation (ΔT), as given by the following equation:

Since the question did not provide a value for the specific heat capacity of water, we'll adopt the value 4.182 J/g.°C. Applying the values provided by the question, we can calculate the heat energy as:

Therefore, the heat energy necessary to heat the amount of water given grom 26.7 to 75°C is 1.69 x 10^4 J (or 16900 J).

Answer:

Atomic Mass of Nitrogen is 14.01

Explanation:

Answer: 4 ATP molecules is produced in the glycolysis of 2 glucose molecules

The first stage of most carbohydrate catabolism, which is described as the breakdown of larger molecules into smaller ones, is glycolysis, which is a part of cellular respiration. Two Greek words that mean "to break down anything sweet" are the source of the word glycolysis. Two molecules of ATP are created during the breakdown of glucose and formation of pyruvate during glycolysis.

Explanation:

2 ATP are produced.

For every glucose molecule, meaning that for every 2 glucose molecules, 4 ATP will be created.

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