11. Identify the properties of the shells that are closer to the nucleus.
They are smaller.
They can hold less electrons.
They have less energy.
All of the above
None of the above

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. The frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. However, for the photoelectric effect to occur, the frequency of the incident light must be above a certain threshold frequency.

The threshold frequency is the minimum frequency of light required to dislodge electrons from the material. Below this threshold frequency, regardless of the intensity or duration of the light, no electrons will be emitted.

This behavior can be explained by the particle-like nature of light, where light is composed of discrete packets of energy called photons. The energy of a photon is directly proportional to its frequency. Only photons with energy greater than or equal to the binding energy of the electrons in the material can dislodge them.

Therefore, the frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

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Answer:

Because they are natural

Answer: C

Explanation:

In endothermic reactions, enthalpy is positive, and in exothermic reactions, enthalpy is negative, So, if enthalpy is positive, then it is an endothermic reaction, and hence is required for the reaction to occur.

2 brome butane

it has 4 C atoms therefor we know it is a butan-- and the brome is placed in the second carbone so that gives the answer 2 brome butane

Answer:2

Explanation: Acids do indeed conduct electricity (Love the one peice pfp btw)

The wave number of the compound can be calculated as shown and we are going to have 8.651 x 10^13 s^-1.

The force constant of a molecule is a measure of the strength of the chemical bonds between the atoms in the molecule. It is defined as the second derivative of the potential energy of the molecule with respect to atomic displacements, evaluated at the equilibrium geometry of the molecule.

μH35Cl = 1.627 x 10^-27 kg

v = 1/2π x (480.5kg m s^-2 / 1.627 x 10^-27 kg)^1/2

v = 0.1592 x (2.953 x 10^29 m s^-2)^1/2

v = 0.1592 x (5.434 x 10^14 s^-1)

v = 8.651 x 10^13 s^-1

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The one on the top left corner is condensation. The one below that is evaporation. The one below that in the water is accumulation. The one next to accumulation is ground flow. The one on the trees is transpiration. The one above transpiration is surface flow. The one above surface flow is precipitation and above precipitation it’s condensation. Lmk if you were able to get that.

The question requires us to calculate the theoretical yield of a reaction, given the percent yield (43.3%) and actual yield (7.1g).

The percent yield of a chemical reaction can be calculated as:

We can rearrange this equation in order to calculate the theoretical yield value. Our first step will be conver the

Now, we can apply the values given by the question to the equation above:

Therefore, the theoretical yield of this reaction would be 16g. Note that the value for actual yield, 7.1g, was given with two significant figures - thus our answer must have the same amount of significant figures.

Answer:

it is A tide (A,C)

Explanation:

i just took the test and tried c and it was a plzzzzz put a btw it was my test lol

Answer:

Green.

Explanation:

Only the particles that hit the nucleus of the atom bounced off.

A substance's cooling curve is a graph representing the change in temperature over time as it is allowed to cool. The gradient of the cooling curve is influenced by the heat capacity, thermal conductivity, and ambient temperature of the material. The correct option is A.

The rate of cooling for a sample with a known composition is measured in order to map the phase boundaries on a phase diagram. As the sample (or some piece of it) starts to go through a phase change, the rate of cooling will alter. When the temperature-time curve changes slope, these "breaks" will be visible.

In the cooling curve, the graph never meet with the time axis.

Thus the correct option is A.

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Answer:

Joints

Explanation:

Without joints we would not be able to bend our arms or legs. Hence option C is correct.

Bending is defined as the behavior of a thin structural element under an external load that is applied perpendicular to the element's longitudinal axis. Plants and their parts are thought to bend as a result of a flexure process in which the curvature of the plant part changes. The plant organs' collenchyma gives them flexibility and elasticity, preventing them from breaking when bent.

The force required to bend, straighten, and support joints is applied by muscles to the bones. Muscles act in pairs of flexors and extensors because they may pull on bones but not put them back into place. The extensor muscle relaxes and stretches as the flexor muscle contracts to bend the joint.

Thus, without joints we would not be able to bend our arms or legs. Hence option C is correct.

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Answer:

because it absorbs all colours expect for red,

Explanation: making the red light bounce into your eyes, therefore seeing the colour red

Question 2: The wave transfers its energy to the mineral, I think, thats my best guess

Answer:

2, 4

Explanation:

Answer:

6CO2 + 6H2O → C6H12O6 + 6O2 is a balanced equation

Explanation:

Carbon, Oxygen, Hydrogen

Reactants are carbon dioxide and water, products are glucose and oxygen

Dynamic Equilibrium I have no idea about (soz)

I believe this might be endothermic

The compound that is formed by the combination of the boron and oxygen is boron oxide.

The term periodic table has to do with the arrangement of the elements in such a way that they can be easily studied. We know that the compound boron oxide.

The boron atom is a member of group three while oxygen is a member of group six. We know that the compound is ionic thus the boron ion would combine with the oxygen ion in order to form the boron oxide. the boron is positive and oxygen is negative.

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Answer: the answer is A.

Explanation:

Bailee explained that when traveling to the moon  mass of the objects is which changes when the gravitational pull changes. Bailee is incorrect. Both the mass and weight will change. Option C is correct.

Mass is the physical quantity of any substance or object and weight is the measurement of amount of force acting on a particulate body of the mass.

At the moon both the  mass and weight is divided by 6 means the  mass and weight is six times lighter then the expected  mass and weight on earth.

Therefore, Bailee is incorrect. Both the mass and weight will change. Option C is correct. which changes when the gravitational pull changes

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The moles of Cl₂(g) will be present at equilibrium is 3.94 × 10⁻⁴ mol

To determine the number of moles of Cl₂(g) at equilibrium, we need to use the given equilibrium constant (Kₑ) and the initial concentrations of CO(g) and COCl₂(g).

Given:

[CO(g)] = 0.3500 mol

[COCl₂(g)] = 0.05500 mol

Kₑ = 1.2 × 10²

The balanced equation for the reaction is:

CO(g) + Cl₂(g) ⇌ COCl₂(g)

Let's denote the number of moles of Cl₂(g) at equilibrium as x. At the start, we have [Cl₂(g)] = 0 mol, but it will change by x at equilibrium.

Using the equilibrium expression, we can write:

Kₑ = [COCl₂(g)] / ([CO(g)] * [Cl₂(g)])

Plugging in the values:

1.2 × 10² = [COCl₂(g)] / (0.3500 * [Cl₂(g)])

To solve for [Cl₂(g)], we need to isolate it on one side of the equation:

[Cl₂(g)] = [COCl₂(g)] / (0.3500 * Kₑ)

Now, let's substitute the given values:

[Cl₂(g)] = 0.05500 / (0.3500 * 1.2 × 10²)

[Cl₂(g)] ≈ 3.94 × 10⁻⁴ mol

Therefore, approximately 3.94 × 10⁻⁴ moles of Cl₂(g) will be present at equilibrium.

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The question was Incomplete, Find the full content below:

Starting with 0.3500 mol CO(g) and 0.05500 mol COCl₂(g) in a 3.050-L flask at 668 K, how many moles of Cl₂(g) will be present at equilibrium

CO(g) + Cl₂(g) ⇄ COCl₂(g)  Ke 1.2 x 10^{2} at 668 K

A reaction that looks to follow second-order kinetics but is not actually a second-order reaction is described by the pseudo-second order (PSO) model.

A chemical reaction that looks to follow second-order kinetics but is not actually a second-order reaction is referred to as pseudo second order (PSO) in a kinetic model.

It is frequently seen in reactions where one reactant's concentration is substantially higher than that of the other reactant, resulting in an abundance of the abundant reactant that remains essentially constant throughout the reaction.

The rate equation in PSO kinetics has the following structure:

1/t = k * [A] * [B]

where [A] and [B] stand for the reactant concentrations, k for the rate constant, and t for the passage of time. According to the equation, the rate of the reaction is inversely proportional to the product of the reactant concentrations.

The consumption of the limiting reactant, which determines the total reaction rate, is what causes the apparent second-order behaviour. The rate of the reaction falls together with the concentration of the limiting reactant with time.

Adsorption reactions, surface reactions, or situations where one reactant is present in excess of the other are frequently described by the PSO model. The PSO model is an approximation and does not imply a real second-order reaction mechanism, it is vital to remember this.

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The gas law that explains the phenomenon of a weather balloon increasing in volume when heated from room temperature (25 °C) to 58 °C is Charles' Law, also known as the law of volumes. option(d)

Charles' Law states that the volume of a given amount of gas is directly proportional to its temperature, assuming constant pressure and amount of gas. According to this law, when the temperature of a gas increases, its volume also increases, and vice versa, provided that other factors remain constant.

In the case of the weather balloon, as it is heated from room temperature (25 °C) to 58 °C, the temperature of the gas inside the balloon increases. According to Charles' Law, this increase in temperature causes the volume of the gas to expand or increase. This is because the gas particles gain kinetic energy with an increase in temperature, leading to more frequent and energetic collisions with the balloon's walls, which results in an expansion of the gas and an increase in volume.

On the other hand, Gay-Lussac's Law describes the relationship between the pressure and temperature of a gas, while Boyle's Law relates the pressure and volume of a gas. The Combined Gas Law combines the three gas laws (Boyle's Law, Charles' Law, and Gay-Lussac's Law) to describe the relationships between pressure, volume, and temperature for a given amount of gas.

Charles' Law explains the phenomenon of a weather balloon increasing in volume when heated, as it describes the direct relationship between the volume and temperature of a gas under constant pressure and amount. option(d)

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Answer:

conservation of mass

The empirical formula for the given compound B₃H₆N₃ is BH₂N. Therefore, option (1) is correct.

The empirical formula can be described as the simplest ratio of the number of different atoms present in a compound. The molecular formula of the compound can be defined as the actual number of each atom present in a molecule. This formula is generally used and is also a multiple of the empirical formula of a compound.

The empirical formula provides the ratio of the number of atoms of different elements in a given compound. The percentage composition of a compound gives the empirical formula of that compound.

Given the compound is inorganic benzene which has a molecular formula is  B₃H₆N₃. We can write this molecular formula as (BH₂N)₃. Therefore the empirical formula of the given compound is BH₂N.

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Answer:

Contemporary light microscopes are able to magnify objects up to about a thousand times. Since most cells are between 1 and 100 μm in diameter, they can be observed by light microscopy, as can some of the larger subcellular organelles, such as nuclei, chloroplasts, and mitochondria.

Answer:

Increased

Explanation:

Answer: Only non-polar medicines can diffuse across the membrane. non-polar drugs are lipid soluble, while polar drugs are water soluble, so polar drugs cant absorb through biological membranes.