According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas.

Almost all bath bombs contain sodium bicarbonate and citric acid. These two ingredients combine to create that fizzing sensation bath bombs are famous for. More than that, though, they clean, deodorize, and repair skin, and strengthen blood vessels. These two main ingredients leave you with healthier, younger looking ...

The value of the resistor R that will produce a force of 9.00×10⁻⁵ N between the two parallel wires separated by 5.0 mm and each having a length of 10 cm is approximately 1.8 Ω.

To calculate the value of the resistor R, we can use the formula for the magnetic force between two parallel wires:

\[ F = \frac{{\mu_0 \cdot I_1 \cdot I_2 \cdot \ell}}{{2 \pi \cdot d}} \]

where F is the force, μ₀ is the permeability of free space, I₁ and I₂ are the currents in the wires, ℓ is the length of the wires, and d is the separation between the wires.

In this case, the force F is given as 9.00×10⁻⁵ N, the length of each wire ℓ is 10 cm (or 0.10 m), and the separation between the wires d is 5.0 mm (or 0.005 m).

By rearranging the formula, we can solve for R:

\[ R = \frac{{2 \pi \cdot d \cdot F}}{{\mu_0 \cdot \ell}} \]

Substituting the given values into the equation, we get:

\[ R = \frac{{2 \cdot 3.1416 \cdot 0.005 \cdot 9.00×10⁻⁵}}{{4\pi × 10^{-7} \cdot 0.10}} \approx 1.8 \, \Omega \]

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Answer and explanation:

Based on the temperature change, we can conclude that the reaction of baking soda and vinegar is exothermic. In an exothermic reaction, energy is released from the system to the surroundings in the form of heat, which causes an increase in the temperature of the surroundings.

In this case, the system consists of the baking soda and vinegar, which react to form carbon dioxide gas, water, and sodium acetate. As the reaction proceeds, energy is released from the system to the surroundings in the form of heat. This heat causes an increase in the temperature of the surroundings, which in this case is the surrounding air and any objects in the vicinity of the reaction.

The decrease in temperature from 25˚C to 19˚C indicates that the reaction released energy to the surroundings, and this energy was absorbed by the air and objects in the vicinity of the reaction. This is why the temperature of the surroundings decreases.

Overall, an exothermic reaction like this involves the conversion of potential energy stored in the reactants into kinetic energy in the form of heat, which is released to the surroundings.

Answer:

Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.

Explanation:

This is the answer i just did it.

I hope this helps.

Answer:

Students communicate results in laboratory reports, and professional scientists communicate results in scientific journals.

Explanation:

brainliest please

The relative contribution of CO2 attributed to global warming is 60 % in the environment.

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Explanation:

An element is define as a substance which contains only those atoms which have same number of protons. Basically, an element contains atoms of one type only.

For example, a piece of sodium metal will contain only atoms of sodium.

An element can never be divided further into simpler substances. So, in the given figure box 1 is containing atoms of only blue color is an element.

A compound is a substance formed by the chemical combination of two or more different atoms present in a fixed ratio.    

For example, \(MgCl_{2}\) is a compound which contains atoms of Mg and Cl in a 1:2 ratio.

The box containing pink and yellow balls in not a compound because here atoms are not chemically combined to each other but they are just present as individual atoms in same box. Hence, this is not a compound.

Therefore, when one or more elements are in a fixed ratio joined together they form a compound.

A buffer is made from an acid - base conjugate pair as shown by option A

Buffers are often composed of weak acids and their conjugate bases (or weak bases and their conjugate acids). The weak acid can contribute a proton to balance any new base, whereas the conjugate base can absorb a proton to do so.

This balance between the acid and its conjugate base allows the buffer to survive pH changes. Buffers are essential in biological systems because many biochemical processes are particularly sensitive to pH changes.

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Answer: The number of electrons held in sub-level l = 3 can be, 14 electrons.

Explanation:

The number of electrons held in sub-level l = 3 can be, 14 electrons

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of  will be -2, -1, 0, +1, +2.

Spin Quantum number : It describes the direction of electron spin. This is represented as  The value of this is  for upward spin and  for downward spin.

As we are given that,

(For each sub-shell)

From this we conclude that, there are 7 orbitals and each orbital contains 2 electrons. So, the number of electrons held in sub-level l = 3 are,  electrons.

Hence, the number of electrons held in sub-level l = 3 can be, 14 electrons

Answer:

Also, l=3 is an F orbital which has 14 electrons and 7 orbitals. How many total orbitals are there in sublevel 3? Answer: There are 9 orbitals in 3rd energy level. Explanation: Thus, the third level holds a maximum of 18 electrons: 2 in the s orbital, 6 in the three p orbitals, and 10 in the five d orbitals.

Explanation:

Hope this helps:) Also can I have brainliest?

Answer:The reaction of zinc oxide with carbon monoxide forms the product zinc metal and carbon dioxide. Zinc oxide is reduced to metallic zinc and carbon monoxide is oxidized to carbon dioxide.

Explanation:

In the following voltaic cell, the addition of SnCl2(aq) to the anodic compartment would cause the emf to increase.
Sn(s) + 2 Cu2+ ⇄ Sn2+(aq) + 2 Cu+(aq)
The given voltaic cell has the following half-reactions:

Sn(s) → Sn2+(aq) + 2e- (oxidation at the anode)

Cu2+(aq) + 2e- → Cu+(aq) (reduction at the cathode)

The standard cell potential for this cell can be calculated using the standard reduction potentials for the half-reactions:

E°cell = E°reduction (cathode) - E°oxidation (anode)

E°cell = E°(Cu2+(aq) + 2e- → Cu+(aq)) - E°(Sn2+(aq) + 2e- → Sn(s))

E°cell = (+0.15 V) - (-0.14 V)

E°cell = +0.29 V

The positive value of E°cell indicates that the reaction is spontaneous and that the cell generates electrical energy as written (from the oxidation of Sn to the reduction of Cu2+).

If SnCl2(aq) is added to the anodic compartment, it will increase the concentration of Sn2+ ions, which will shift the equilibrium of the anode reaction to the left, according to Le Chatelier's principle. This will decrease the concentration of electrons available for the reduction of Cu2+ ions at the cathode, and thus decrease the overall cell potential.

Therefore, the statement "the addition of SnCl2(aq) to the anodic compartment would cause the emf to increase" is False.

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The molecules that are products in the Krebs cycle are CO2, NADH, FADH2, and ATP. The remaining molecules listed (FAD, NAD+, Acetyl, CoA, Oxygen, and Pyruvate) are not direct products of the Krebs cycle.

The Krebs cycle, also known as the citric acid cycle or tricarboxylic acid cycle, is a series of chemical reactions that occur in the mitochondria of cells. It plays a crucial role in the oxidative metabolism of glucose and other fuels.

In the Krebs cycle, the following molecules are products:

a) FADH2: FADH2 is produced during the conversion of succinate to fumarate in the Krebs cycle.

b) NADH: NADH is produced during multiple steps of the Krebs cycle, including the conversion of isocitrate to α-ketoglutarate and the conversion of malate to oxaloacetate.

c) ATP: ATP is not directly produced in the Krebs cycle. However, it is generated through oxidative phosphorylation, which is tightly coupled to the electron transport chain that receives electrons from NADH and FADH2 produced in the Krebs cycle.

d) CO2: Carbon dioxide (CO2) is released as a byproduct during various reactions in the Krebs cycle, including the conversion of isocitrate to α-ketoglutarate and the conversion of α-ketoglutarate to succinyl-CoA.

The molecules FAD, NAD+, Acetyl, CoA, Oxygen, and Pyruvate are involved in the Krebs cycle but are not considered direct products. FAD is a cofactor that is reduced to FADH2 during the cycle, NAD+ is reduced to NADH, Acetyl is a reactant that combines with oxaloacetate to form citrate, CoA is a cofactor that assists in the formation of acetyl-CoA, Oxygen is used as the final electron acceptor in oxidative phosphorylation, and Pyruvate is an intermediate produced from glucose metabolism but enters the Krebs cycle after being converted to acetyl-CoA.

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Answer: You would place the apple on the person's head.

Explanation:

Answer:

Background research

Explanation:

The mass of the sample of calcium carbonate when it absorbs 45. 5 J of heat is option B: 5.0 grams.

This is a heat transfer problem The general formula for heat transfer or heat change (as in absorption) is as follows:

Q = m x c x  ΔT

where:

Q = heat absorbed,

m = mass of the substance,

c = specific heat, and

ΔT = change in temperature.

We are already given:

Q = 45.5 J

ΔT is the difference between 28.5 °C and 21.1 °C:

28.5 °C - 21.1 °C = 7.4 °C

c = 0.82 J/g-K

We need to find the mass of the sample or the substance:

m = Q/ c x ΔT

= 45.5 / 0.82 x 7.4

= 5.0 grams

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The lines in a line graph aid in the fairly early detection of trends, allowing the viewer to make predictions about the data that has not yet been recorded.These are appropriate for illustrating the data points since, given one variable, the other is simple to ascertain.

A line graph, often known as a line chart, is a visual representation of data that is continuously changing over time.

There are two axes. in a line graph, the occurrences and categories being compared throughout time are shown on the x-axis (abscissa), and the scale, which is a group of integers that reflects the data and is divided into equal intervals, is shown on the y-axis (ordinate).

Depending on the data, the graph's lines may either decline or ascend. It is practical to plot time graphs along the x/y axis since it shows the rise and fall of data points in great detail.

The reader may readily see changes in one group over time by choosing the appropriate scales for each axis (time on the x-axis and change is measured on the y-axis).

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Answer:

See explanation

Explanation:

Double displacement reaction is a reaction in which the cations in the reactants side exchange partners on the product  side

The molecular equation here is;

CaI2(aq) + K2C2O4(aq) --------->CaC2O4(s) + 2KI(aq)

General ionic equation;

Ca^2+(aq) + 2I^-(aq) + 2K^+(aq) + C2O4^2-(aq) -------> CaC2O4(s) +  2I^-(aq) +

2K^+(aq)

Net ionic equation;

Ca^2+(aq) +  C2O4^2-(aq) ------> CaC2O4(s)

Answer:

as per given balanced equation one mole Zn produces 1mole Hydrogen

when reacted with excess acid.

So 3 moles Zn will give 3moles Hydrogen

Explanation:

According to the balanced chemical equation, one mole of Zn produces one mole of hydrogen . Therefore, 3.86 moles of Zn metal will produce 3.86 moles of hydrogen gas.

Mole ratio refers to the ratio of the number of moles of one substance in a chemical reaction to the number of moles of another substance in the same reaction.

It is derived from the balanced chemical equation for the reaction, which indicates the relative amounts of each substance involved in the reaction.

Mole ratio is important in stoichiometry, which is the study of the quantitative relationships between reactants and products in a chemical reaction.

The given chemical reaction is written as follows:

Zn + 2 HCl ⇒ ZnCl₂ + H₂

According to the balanced chemical equation, one mole of Zn produces one mole of hydrogen . Therefore, 3.86 moles of Zn metal will produce 3.86 moles of hydrogen gas.

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According to the Dalton Law in a blend of non-reacting gases, the entire pressure will be equivalent to the total of partial pressures of the individual gases.

The pressure of H₂ gas collected in the tube will be 728.8mm Hg.

This can be calculated by:

Dalton's formula:

Ptotoal = PH2O + PH2

Given :  

Ptotal = total pressure of gases = 748. 6mm Hg

PH2O = partial pressure of water = 19.8 mm Hg

PH2 = partial pressure of hydrogen = ?

Now using the formula we will calculate:

748. 6mm Hg = 19.8 mm Hg + PH2

728.8mm Hg =  PH2

Therefore, the pressure of the hydrogen in the tube is 728.8mm Hg.

Hence  728.8mm Hg is a correct answer.

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Answer:

An electron in the outer energy level of an atom

Explanation:

Because it is responsible for the chemical properties of the atom and also participates in chemical bonds

The phrase that describes a valence electron is “an electron in the outer energy level of an atom”. Hence, option B is the correct answer.  

Energy levels otherwise known as electron shells are described as distances that are fixed from the atom’s nucleus where electrons may be found. Electrons are defines as particles that are tiny and negatively charged that are present in an atom that tends to move around the positive nucleus present at the center. The valence electrons are described as follows:  

Thus, we can conclude that the valence electron is an electron that is present in the atom’s outermost energy level. Hence, option B is the correct answer.

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When precipitating the lead cation, you were told to place the test tube in ice after adding the appropriate reagent because this helps to increase the solubility of the lead cation and allows for more efficient precipitation.

By lowering the temperature of the solution, the solubility of the lead cation is decreased, causing it to precipitate out of solution more readily. This is known as the "common ion effect" and is a common technique used in chemistry to promote precipitation reactions.

By placing the test tube in ice, the reaction is slowed down, allowing for more complete precipitation of the lead cation and resulting in a more accurate measurement of the amount of lead present in the solution.

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Answer:

chemical reaction between two reagents basically

The given net reaction, "H + OH → H2O," is best described as a neutralization reaction, specifically the combination of a hydrogen ion (H+) and a hydroxide ion (OH-) to form water (H2O).

The net reaction, "H + OH → H2O," represents a neutralization reaction. In this reaction, a hydrogen ion (H+) combines with a hydroxide ion (OH-) to form water (H2O). This reaction is commonly observed in acid-base chemistry, where an acid and a base react to neutralize each other and produce water as the resulting product. The hydrogen ion (H+) is derived from an acid, which is a substance that donates protons (H+) in a solution. The hydroxide ion (OH-) is derived from a base, which is a substance that accepts protons (H+) in a solution.

When these two ions combine, they form a water molecule (H2O), which is electrically neutral. Neutralization reactions are important in maintaining pH balance and regulating acidity in various chemical and biological systems. They play a crucial role in many areas, including chemistry, biology, and environmental science.

What is the best description for the net reaction H + OH → H2O?

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Based on the given image of the process, a chemical reaction did not take place as there was no rearrangement of atoms, rather, the two substances simply mixed.

In a chemical reaction, substances called reactants interact with one another to form new substances called products.

Chemical reactions involve the breaking of chemical bonds in the reactants and the formation of new bonds in the products.

During a chemical reaction, the atoms of the reactants rearrange to form different combinations of atoms in the products.

In the process above, no new substances were formed.

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Answer:

27.50 g

Explanation:

Unless weight was somehow gained/lost during the reaction, the products should weigh as much as the reactants. Since this isn't specified the mass of the reactants should be equal to the mass of the products.

Explanation:

What the question is asking is what is something exciting you've ever seen? It's something extraordinary and happens rarely.

You can use a meteor shower or a shooting star for example.

Suspension will settle out if allowed to sit on a table

In suspension the solute does not dissolve in liquid and when placed on table for sometime and it will settle down at the bottom of the beaker and we can separate particles of solute easily from solvent through filtration and the colloid particles of solute does not dissolve in liquid neither it is settle down and it float through the solvent and in solution the particles of solute dissolve in to the solvent and we cannot identify them as separate we cannot separate them by filtration and in compound the two element combine to form a new thing and resultant compound have two new or different properties other than its ingredients so the correct answer is suspension

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Substituents are trans to each other if the appear on opposite sides in the structure. C, E, G, H and K are trans to the bromo substituent.

The substituted cyclohexane compound is shown in the image attached. Two substituents in a compound are trans to each other if they appear on opposite sides of the structure. Cis substituents appear on the same side of the structure.

Considering the structure as shown in the image attached, the substituents that are trans to the bromo substituent are the substituents shown as letters C, E, G, H and K. They lie opposite to the bromo substituent.

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Answer: H , G , E , K, C

Explanation:

These are all opposite from Bromine, meaning they do not face the same way. Bromine faces upward (axial) while the rest of these face downward, (equatorial) to Bromine. We are looking for this opposite facing options. A is not considered an opposite facing option even though it at least looks opposite to Bromine only because it is connected directly to Bromine, making it neither the same or opposite to Bromine.

Answer:

discoveries that can change little aspects of our daily lives or finding cures for diseases that have hounded humanity, scientists have been hard at work trying to push us toward a brighter future.

Explanation:

thats what i got from my research :D

Answer:

Thomson model of the atom

Explanation:

"plum pudding" from

raisins used to be called plums

distribution of electrons reminded many scientists of raisins

within Thomson's model's positively charged region of space

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