g two nuclei of 40ca (atomic number 20) undergo fusion to form a nucleus of 80 zr (atomic number 40). the total binding energy of 40ca is b. what would be the best estimate for the total binding energy of 80 zr?

Answer:

endothermic reaction

Photosynthesis is an endothermic reaction. This means it cannot occur without energy (from the Sun). The light required is absorbed by a green pigment called chlorophyll in the leaves.

Explanation: hope this helps u!

Answer:

Endothermic reaction I believe.

Explanation:

It can't occur without the energy from the sun. The light is absorbed by the green pigment called chlorophyll which is in the leaves of the plant.

The chemical reaction for photosynthesis is as follows:

\(6CO_{2} + 6H_{2} O\)→\(C_{6} H_{12} O_{6} + 6O_{2}\)

Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into oxygen and sugar energy. Photosynthesis is a process that plants and other organisms use to convert light energy into chemical energy that can then be released to fuel the organism's activities via cellular respiration.

Photosynthesis' primary function is to convert solar energy into chemical energy and then store that chemical energy for later use. This process powers the majority of the planet's living systems. Jan Ingenhousz, a Dutch-born British physician and scientist best known for discovering photosynthesis, the process by which green plants absorb carbon dioxide and release oxygen in the presence of sunlight.

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Answer: A

Explanation: I hope this helps!

Answer:

A or C. Best to go with A

Explanation:

Hope it works!!

Answer:

d

Explanation:

Answer:

I believe the seasons would be reversed

Explanation:

If I'm wrong sorry

Answer:

D.) The seasons would be reversed

Explanation:

Hope I helped

Answer:$$7.50 x 10^23$$

$$H_2SO_4$$?

Explanation:It is a fact that such a quantity has a mass of  

98.08

⋅

g

. Why? Because  

6.022

×

10

23

particles SPECIFIES a molar quantity. And we know (or can calculate) that sulfuric acid has a molar mass of  

98.08

⋅

g

...  

Answer:

6x10^23

Explanation:

When you inhale 5.0 mol of oxygen, 3.0 × 10²⁴ molecules of oxygen enter your lungs.

We want to know how many molecules of oxygen are contained in 5.0 mol of oxygen.

The number of molecules in 1 mole is a constant known as Avogadro's number.

Avogadro's number is the number of atoms or molecules in one mole of a substance, equal to 6.023 × 10²³.

5.0 mol × (6.023 × 10²³ molecules/1 mol) = 3.0 × 10²⁴ molecules

When you inhale 5.0 mol of oxygen, 3.0 × 10²⁴ molecules of oxygen enter your lungs.

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Explanation:

The frequency of 100 MHz is equivalent to a frequency of 100,000,000 Hz (hertz).

Answer: 1 x 10^8 Hz

Explanation:

Answer:

137.18mL

Explanations:

To get the required volume, we will use the dilution formula expressed as:

C1 and C2 are the concentration of the solution

V1 and V2 are the corresponding volumes

Given the following parameters:

Substitute the given parameters into the formula:

Hence the required volume of KCL that must be diluted to make 825 milliliters of a 0.705 M KCl solution is 137.18mL

Answer: simple and complex.

Explanation:These are also called simple sugars. They're found in refined sugars, like the white sugar you see in a sugar bowl. If you have a lollipop, you're eating simple carbs.

Based on how to wrire chemical formulae, the formula for chlorine monobromide is BrCl.

Chlorine monobromide is a covalent compound formed from the covalent combination of chlorine and bromine.

The covalent bond is formed from the sharing of electrons between atoms chlorine and bromine.

Br2 + Cl2 ---> 2 BrCl

Tye formula of chlorinr monobromide is BrCl.

It is also known as bromine monochloride.

Therefore, the formula for chlorine monobromide is BrCl.

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When a chiral starting material undergoes an Sn1 reaction, it yields a 50:50 mixture of enantiomers because of the formation of a planar carbocation intermediate.

1. The chiral starting material undergoes ionization, forming a planar carbocation intermediate. The chirality is lost during this process, as the intermediate is achiral.

2. Nucleophilic attack can occur from either face of the planar carbocation intermediate, leading to the formation of two enantiomers.

3. Since both faces of the carbocation intermediate are equally accessible to the nucleophile, the probability of attack from each side is the same. This results in a 50:50 mixture of enantiomers.

In summary, a chiral starting material yields a 50:50 mixture of enantiomers when it undergoes an Sn1 reaction due to the formation of a planar carbocation intermediate, which allows for nucleophilic attack from either face, ultimately leading to the equal probability of forming both enantiomers.

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Answer:

Chronic traumatic encephalopathy (CTE) is a progressive brain condition that's thought to be caused by repeated blows to the head and repeated episodes of concussion. It's particularly associated with contact sports, such as boxing or American football.

Explanation:

Answer:

2,400,000 torr (3 s.f.)

Explanation:

Convert the pressure from Pascal to atm first:

\(\boxed{1 \: atm = 101325 \:Pa }\)

3.20 ×10⁸ Pa

= [(3.20 ×10⁸) ÷101325] atm

= 3158.2 atm (5 s.f.)

Convert atm to torr:

\(\boxed{1 \: atm = 760 \: torr}\)

3158.2 atm

= (3158.2 ×760) torr

= 2400000 torr (3 s.f.)

If 51 moles of water reacts in the above chemical reaction, then 34 moles of phosphoric acid will be produced.

Stoichiometry refers to the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).

According to this question, phosphorus oxide reacts with water to produce phosphoric acid as follows:

P₄0₁₀ + 6H₂O → 4H₃PO₄

Based on the above equation, 6 moles of water produced 4 moles of phosphoric acid.

This means that 51 moles of water will produce 51 × 4/6 = 34 moles of phosphoric acid.

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Note that the experiment described is the Rutherford Scattering Experiment invented by Ernest Rutherford for simulating alpha particle dispersion. See the procedure below.

Students might use the above contraption to simulate alpha particle dispersion by rolling the marble down the moveable slope towards the circular weight placed on the huge sheet of lined paper.

The scattering of alpha particles can be studied by measuring the angle of deflection using a protractor.

The significance of this experiment is that it contributes to our understanding of subatomic particle behavior, notably how alpha particles disperse when they contact with other particles. See a clearer image attached.

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The system adjust to reestablish equilibrium by shifting the reaction toward the products and decrease the concentrations of SO₂ and O₂. The correct option is (C).

Given the chemical equation:

2SO₂ (g) + O₂ (g) 2SO₃(g) + 198 kJ

This is an Exothermic reaction of Sulfur-dioxide and Oxygen gas to form Sulfur-trioxide.

According to Le Chatelier's principle, if a system at equilibrium is disturbed by a change in temperature, pressure, or concentration, the system will respond in a way that tends to counteract the disturbance and reestablish equilibrium.

In this case, cooling the system would decrease the temperature, which would shift the equilibrium in the direction that produces heat (since the reaction is exothermic). Therefore, the system would shift towards the products (right) to produce more heat and reestablish equilibrium. This would result in a decrease in the concentration of SO₂ and O₂ and an increase in the concentration of SO₃.

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a. The chemical reaction can be rewritten as a word equation as follows:

Hydrogen Peroxide -> Oxygen + Water

b. Evidence that a chemical reaction has occurred includes the production of a new substance (oxygen and water), a change in the physical properties of the reactants (change in color, odor, or temperature), and the release of energy (evolution of oxygen gas).

c. The reaction is likely exothermic, which means it releases energy. This is because the reaction produces new substances (oxygen and water) and releases energy in the form of oxygen gas. In an endothermic reaction, the reactants would absorb energy from the surroundings.

…for his invention of the Wilson cloud chamber, which became widely used in the study of radioactivity, X rays, cosmic rays, and other nuclear phenomena.

Answer:

Increasing the H+/H3O+ will decrease the pH, while increasing the OH- ions will increase the pH

Explanation:

so pH=-log(H), which means that the smaller H gets to 0, the more the pH rises. The larger the H+ gets, the smaller the pH
if H is 1, then pH is 0
if H is 0.1, then pH is 1
if H is 0.01, then pH is 2
and so on
if H is 0.00000000000001, then the pH is 14
When OH goes up, H goes down, so
if OH is 0.00000000000001, then the ph is 0
if OH is 0.0000000000001, then the pH is 1
and so on
If the OH is 1, then the pH is 14

Helium fusion requires higher temperatures than hydrogen fusion because of the increased electrostatic repulsion between helium nuclei.

Helium has two protons, while hydrogen only has one, the strong nuclear force, which binds the atomic nuclei together, is powerful but short-ranged. To overcome the electrostatic repulsion and allow the strong nuclear force to act, helium nuclei must come very close to each other.  At higher temperatures, the particles have greater kinetic energy, which increases the chances of helium nuclei colliding with enough force to overcome the repulsion.

The temperature required for helium fusion, known as the triple-alpha process, is around 100 million Kelvin, significantly higher than the 15 million Kelvin needed for hydrogen fusion through the proton-proton chain reaction. In summary, the increased electrostatic repulsion between helium nuclei and the need for a closer approach for the strong nuclear force to take effect result in helium fusion requiring higher temperatures than hydrogen fusion.

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Answer:

A

Explanation:

This is because in the graph shown line A has a quite greater impact of refraction than line B .

Hence, we can conclude that line A has the greater reaction at a faster rate.

A way of solving this question is using the molarity formula and finding the number of moles present in the solution, the molarity formula is:

M = n/V

where:

M = molar concentration in mol/L

n = number of moles

V = volume in liters

Now let's add the values to the formula

0.50 = n/0.750 L

n = 0.375 moles

Now let's use the molarity formula again, but with the new volume (750 mL - 150 mL = 600 mL)

M = 0.375/0.600

M = 0.625 mol/L, this is the new concentration of NaCl

Answer:

co2

Explanation:

it is an ionic compound

Answer:

Cm2 Is not a unit of volume.

Explanation:

Hope this helps!

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The following KMT presumptions are nicely illustrated by ideal gases: 1) The volume of the molecules themselves may be disregarded since the particles in an ideal gas are so tiny relative to the space between them. 2) There are no attractor or repellent interactions between the particles of an ideal gas and the container walls.

The kinetic molecular theory of gases provides an explanation for the behaviour of ideal gases. Pressure is explained by molecular mobility, which causes molecular collisions with the container walls, while gases' great compressibility is explained by their vast intermolecular distances.

Large numbers of particles that act like hard, spherical objects in a condition of continuous, random motion make up gases.

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Answer:

B - To increase the rate of the reaction

Explanation:

Catalysts speed up the reaction without being reactants or products, so aren't used up in the reaction.

The characteristics of the graphs we can find the answer on how to draw the graph

The graphical representation is one of the best methods to visualize the relationships between a series of experimental data and to be able to find their functional relationships.

A graphic representation has several parts

The scales are found with the relationship between the variation of the data between the amount of paper or graph range, let's look for the scales for each axis.

x-axis

The variation of the data  Δx = Final value - initial value

Paper range, generally it is  x = 20cm (sheet size)

They indicate that the graph must start at zero, so the minimum value must be changed,

             initial value = 0

              Δx = 760 -0 = 760

             x scale  = 760/20

             x scale  = 38 mb / cm of paper

y-axis

Data range   Δy= 0.9 -0

Paper range  y= 20 cm (sheet size)

            y-scale  = 0.9 / 20

            y scale  = 0.045 mL / cm paper

One of the characteristics of the scale is that it must be comfortable for graphing, which is why it approximates the following units

Selected scales  

         x scale  = 40 mb / cm paper

         y scale = 0.05 mL / cm paper

The second part consists of marking values ​​equally spaced and facilitating readable in the two axes, see attached for a graph made in a computer program

Plot each experimental point as best as possible, there are always some approximations by the selected scales

Draw a curve that passes through most of the experimental points and those that remain outside are balanced above and below the curve, in this case the program draws a line between each point, but it is preferable to draw a smooth curve.

In conclusion with the characteristics of the graphs we can find the answer on how to draw the graph

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