PLEASE HELP DUE TONIGHT!!! I literally have no clue with these questions please can you help! I’ll give you the highest review if you can give me the answers please!

Answer:

What happens when it is squeezed is that its volume increases, the pressure of the material increases.

Explanation:

This is due to the fact that the elastic modulus of the sponge is high and withstands broad forces without deforming its structure, since the force is made within the proportional limit of its particles without modifying or permanently deforming them, that is why when stopping doing pressure or force on it its shape returns to being the original, this also happens due to the phenomenon of resilience

Answer:Super-giants

Explanation:

Complete question:

A ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. What is the gravitational potential energy of the ball ?

Help me! This is 8th grade sci btw

Answer:

the gravitational potential energy of the ball is is 14.7 J.

Explanation:

mass of the ball, m = 0.5 kg

height above the ground on which the ball is sitting, h = 3 m

The gravitational potential energy of the ball is calculated as follows;

P.E = mgh

P.E = 0.5 x 9.8 x 3

P.E = 14.7 J

Therefore, the gravitational potential energy of the ball is is 14.7 J.

Answer:

Try true

Explanation:

But note I'm not sure

Explanation:

it is true

hope I helped you!! :))

Answer:

Syrup is a mixture of thick sticky liquid consisting of a concentrated solution of sugar and water with or without the addition of a flavoring agent or medicinal substance.

Explanation:

so compound

Explanation:

The Skeletal System (A).

According to the graph, the concentration of A decreases with time before leveling out. Option A.

The reaction shown is that of a reversible reaction in which A is on the reactant's side and A2 is on the product's side.

At the beginning of the reaction, the concentration of A decreases as a result of forming A2. In other words, the concentration of A2 increases just as that of A decreases.

With time, the reaction reaches an equilibrium during which the rate of formation of A equals the rate of formation of A2. At this point, the concentration of A levels off.

In summary, the concentration of A first decreases before leveling off.

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Answer:

In a practical and frequently used form of Gibbs free energy change equation, ΔG is calculated from a set values that can be measured by scientists: the enthalpy and entropy changes of a reaction, together with the temperature at which the reaction takes place.

Explanation:

Answer:

A Carbon

Explanation:

The overall standard state free energy change for the coupled reaction of ADP phosphorylation to ATP and electron transfer reactions in Complex II is -44.0 kJ/mol.

To determine the overall standard state free energy change (ΔG) for a coupled reaction involving the phosphorylation of ADP to ATP and electron transfer reactions in Complex II, we can use the equation,

ΔG_total = ΔG_phosphorylation + ΔG_electron_transfer

ΔG_phosphorylation = -30.5 kJ/mol

ΔG_electron_transfer = -13.5 kJ/mol

Substituting the values,

ΔG_total = -30.5 kJ/mol + (-13.5 kJ/mol)

ΔG_total = -44.0 kJ/mol

Therefore, the overall standard state free energy change for the coupled reaction of ADP phosphorylation to ATP and electron transfer reactions in Complex II is -44.0 kJ/mol.

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Iron is oxidized to form rust. Hence, option C is correct.

A chemical reaction that takes place between an oxidizing substance and a reducing substance.

Chemical reaction: Fe + O₂ → Fe₂O₃.

Oxidation half reaction:

Fe⁰ → Fe⁺³ + 3e⁻  

4Fe⁰ → 4Fe⁺³ + 12e⁻

Reduction half-reaction:

O₂⁰+ 4e⁻ → 2O⁻²

3O₂⁰+ 12e⁻ → 6O⁻²

Balanced chemical reaction:

4Fe + 3O₂ → 2Fe₂O₃.

Oxidation is an increase of oxidation number, iron is oxidized from oxidation number 0 (Fe) to oxidation number +3 (in rust Fe₂O₃).

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Answer:Iron is oxidized to form rust.

Explanation:

The heat of fusion is the amount of heat energy needed to turn anything solid into a liquid. There is a formula, Q = mHf. Because matter doesn't affect temperature, the temperature is not a factor.

There is no increase in the kinetic energies of the particles, and hence no rise in temperature, because the energy required for phase shifts is employed to break bonds. Similarly, energy is required to evaporate a liquid to defeat the attraction forces between the liquid's particles.

The energy that is given during a change in the state of matter is used to alter the binding energies rather than boost the kinetic energy of the molecules. As a result, the temperature doesn't change.

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Answer:

There is only 1 sig figures in 6

Explanation:

There is no 0 after it so it is considered as only 1 significant figure

Answer:

is there an attachment to this question? i can help if u insert one :)

Explanation:

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While the atomic mass is simply the sum of the protons and neutrons, the average atomic mass is a weighted average of all the isotopes.

The isotope symbol can be used to identify the element's most prevalent form.

Atomic mass is connected to mass number and average atomic mass, however their definitions differ.

The total number of protons and neutrons in an atom's nucleus is known as mass number. Usually, the letter A is used to denote it. Since the mass number is the sum of the whole numbers of protons and neutrons, it has an integer value.

Average atomic mass, on the other hand, is the weighted average of the masses of all the naturally occurring isotopes of an element, taking into account their abundance. It is usually represented by the symbol A or M.

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The IUPAC name of the compound NaB(OH)4 is sodium tetrahydroxyborate.

The compound NaB(OH)4 is made up of sodium ions (Na+) and tetrahydroxyborate anions (B(OH)4-).

According to IUPAC naming conventions, the name of an ionic compound is written by listing the cation first, followed by the anion. In this case, the cation is sodium (Na+) and the anion is tetrahydroxyborate (B(OH)4-).

To name the tetrahydroxyborate anion, we start by identifying the boron atom, which has a valency of three. The hydroxide ions (OH-) are then added to balance the charge, resulting in the formula B(OH)4-.

The prefix "tetra-" indicates that there are four hydroxide groups attached to the boron atom. The suffix "-ate" is used to indicate that this is an anion.

Finally, the name of the compound is written as "sodium tetrahydroxyborate" because it contains one sodium cation and one tetrahydroxyborate anion.

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The word equation that represents the violent reaction between sodium and water to produce sodium hydroxide and hydrogen gas is:

Sodium + Water → Sodium Hydroxide + Hydrogen

The reactants and products involved in a chemical reaction, as well as their relative amounts, are shown in a chemical equation which is a symbolic representation of the process.

Therefore, The hydrogen gas could ignite and burst as a result of this reaction's strong exothermicity and potential heat release. As a result, it's crucial to handle sodium with caution and carry out this response in a controlled setting.

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The major product expected from the sequential reaction of cyclopentene with \(Br_{2} /H_{2} O\) , followed by sodium hydroxide is cyclopentene epoxide.

The treatment of cyclopentene with  \(Br_{2} /H_{2} O\)  which is known as bromine water is an electrophilic substitution reaction.

In the first step the bromine molecule and the water molecule reacts each other and leads to formation of the bromohydrines . After that bromohydrines  will break and we get halide anion i.e., bromine anion because bromine is more electronegativity and hydrin as a cation.

The cyclopentene will react with bromohydrin to give trans-2-bromopententanol and after reaction with base it give cyclopentane epoxide .

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Answer:

yes tomato juice is a solution. because it is homogenous mixture and it's ingredient dissolve in water.

Solutions are made of a solute and a solvent. Tomato juice is solution since it contains the tomato pulp and water which can be mixed well.

A solution is a combination of a soluble or insoluble salt and a solvent like water. There are homogenous solutions and heterogenous solutions. In  the homogenous solutions the solute is completely soluble in the solvent and both exists in one phase.

In heterogenous solutions, the solute form a different phase from the solvent and appear immiscible. The components can be mixed well using stirring methods.

Tomato juice is made by the tomato pulp and water. The pulp and water is mixed well to form the juice and it appear to be one solution

Therefore, tomato juice can be considered as a solution.

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Answer:

Knowing your lab equipment and their names will aid in having a successful experiment and may help in correcting errors.

If you do not know your lab equipment, that will only result in having a lack of knowledge of the equipment or not knowing how to correct a mistake in an experiment.

Explanation:

Hope I helped.

To produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta. To determine the amount of pasta required to produce 1000 kg of fishmeal, we need to consider the mass balance of the process. Let's break down the steps involved:

A. Extraction of fish oil:

The pasta obtained from the extraction stage contains 20% flour and 80% water. To calculate the amount of pasta, we need to determine the mass of flour and water in the pasta. Let's assume the total mass of the pasta is P kg.

Mass of flour = 20% of P = 0.2P kg

Mass of water = 80% of P = 0.8P kg

b. Drying of pasta:

During the drying stage, the pasta is dried in a rotary drum, resulting in fishmeal with 40% humidity. This means that the final fishmeal will contain 60% dry matter.

Let's assume the mass of the dried fishmeal is M kg.

Mass of dry matter = 60% of M = 0.6M kg

Since the dry matter in the fishmeal comes from the flour in the pasta, we can equate the mass of dry matter to the mass of flour:

0.6M kg = 0.2P kg

To produce 1000 kg of fishmeal, we want to find the corresponding value of P:

0.6M = 0.2P

P = (0.6M) / 0.2

P = 3M

Therefore, to produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta.

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Answer:

L-2.75 W-2.75 H-2.85

Explanation:

The E2 mechanism is predicted to predominate in the given reaction.

In the reaction described, the presence of a strong base (Br⁻) suggests that an elimination reaction will likely occur. There are two possible elimination mechanisms: E1 (unimolecular elimination) and E2 (bimolecular elimination).

The E1 mechanism involves a two-step process where the leaving group (Br) dissociates to form a carbocation intermediate, followed by the abstraction of a proton by a base. However, in the given reaction, no mention of a solvent or conditions favoring carbocation stability is provided, making the E1 mechanism less likely.

On the other hand, the E2 mechanism occurs in a single step where the base removes a proton from the adjacent carbon, while the leaving group departs simultaneously. This concerted process results in the formation of a double bond. The E2 mechanism is favored when a strong base is present and the substrate has a good leaving group.

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The rate law for the reaction between iodide ion and dibromothane (C₂H₄Br₂) in methanol is determined to be Rate = k[C₂H₄Br₂][I], indicating that the reaction is first-order with respect to both reactants.

The rate constant (k) for the reaction is calculated to be approximately 4.88 M⁻¹s⁻¹ using the initial rate data from Experiment 1.

The rate of consumption of iodide ion (I) is estimated to be around 1.79 M/s when [C₂H₄Br₂]₀ = 0.74 M and [I]₀ = 0.52 M.

The activation energy (Ea) for the reaction is found to be approximately 51.3 kJ/mol using the Arrhenius equation and temperature data from Experiment 4.

To determine the rate law, we need to examine how the initial rates change with respect to the initial concentrations of the reactants. Let's consider the first experiment (Experiment 1) and compare it with the other experiments:

Experiment 1: [C₂H₄Br₂]₀ = 0.127 M, [I]₀ = 0.102 M, Initial rate = 6.45x10⁻² M/s

Experiment 2: [C₂H₄Br₂]₀ = 0.254 M (2 * [C₂H₄Br₂]₀), [I]₀ = 0.127 M (2 * [I]₀), Initial rate = 0.102 M/s (2 * Initial rate)

Experiment 3: [C₂H₄Br₂]₀ = 0.204 M (1.6 * [C₂H₄Br₂]₀), [I]₀ = 1.29x10⁻² M (0.126 * [I]₀), Initial rate = 0.204 M/s (3.16 * Initial rate)

From the comparisons above, we can see that doubling the initial concentrations of both reactants (Experiment 2) doubles the initial rate, indicating that the reaction rate is first-order with respect to both [C₂H₄Br₂] and [I].

The rate law for the reaction can be expressed as:

Rate = k[C₂H₄Br₂]ᵃ [I]ᵇ

Since the reaction is first-order with respect to both reactants, we have a = 1 and b = 1.

Therefore, the rate law for the reaction is:

Rate = k[C₂H₄Br₂][I]

To determine the rate constant (k), we can choose any of the experiments and use the given data. Let's use Experiment 1:

[C₂H₄Br₂]₀ = 0.127 M

[I]₀ = 0.102 M

Initial rate = 6.45x10⁻² M/s

Plugging these values into the rate law equation, we can solve for k:

6.45x10⁻² = k(0.127)(0.102)

k = 6.45x10⁻² / (0.127)(0.102)

k ≈ 4.88 M⁻¹s⁻¹

So, the rate constant for the reaction is approximately 4.88 M^(-1)s^(-1).

Now, to determine the rate of consumption of iodide ion (I) when [C₂H₄Br₂]₀ = 0.74 M and [I]₀ = 0.52 M, we can use the rate law:

Rate = k[C₂H₄Br₂][I]

Plugging in the given concentrations and the rate constant we just determined:

Rate = (4.88 M^(-1)s⁻¹)(0.74 M)(0.52 M)

Rate ≈ 1.79 M/s

Therefore, the rate of consumption of iodide ion when [C₂H₄Br₂]₀ = 0.74 M and [I]₀ = 0.52 M is approximately 1.79 M/s.

The Arrhenius equation is given as:

k = Ae^(-Ea/RT)

where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant (8.314 J/(mol·K)), and T is the temperature in Kelvin.

From the given data, we have:

Experiment 1: T = 20°C = 293 K

Experiment 2: T = 20°C = 293 K

Experiment 3: T = 20°C = 293 K

Experiment 4: T = 40°C = 313 K

Let's consider Experiment 1:

[C₂H₄Br₂]₀ = 0.127 M

[I]₀ = 0.102 M

Initial rate = 6.45x10⁻² M/s

We can rearrange the rate law equation to solve for the pre-exponential factor (A):

A = k / ([C₂H₄Br₂]₀[I]₀)

Plugging in the values for Experiment 1:

A = (4.88 M⁻¹s⁻¹) / (0.127 M * 0.102 M)

A ≈ 37.80 s⁻¹

Now, we can use the Arrhenius equation with Experiment 4 to determine the activation energy (Ea):

k = Ae^(-Ea/RT)

Rearranging the equation:

ln(k) = ln(A) - (Ea/RT)

Taking the natural logarithm of the rate constant from Experiment 4:

ln(k) = ln(1.79 M/s)

Substituting the values into the equation:

ln(1.79 M/s) = ln(37.80 s^(-1)) - (Ea / (8.314 J/(mol·K) * 313 K))

Simplifying the equation:

ln(1.79) = ln(37.80) - (Ea / (8.314 * 313))

Now, solve for Ea:

Ea = -(ln(1.79) - ln(37.80)) * (8.314 * 313)

Ea ≈ 51,253 J/mol or 51.3 kJ/mol

Therefore, the activation energy for this reaction is approximately 51.3 kJ/mol.

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Answer:

She okeyy

Explanation:

Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️

Answer:

4. A concentration of a trace mineral was found to be 2.53 ppb in an aqueous solution. A. What mass of solution contains 2.53 g of the mineral? (1 point - Knowledge, 2 points - Inquiry, 1 point - Communication) m=? C = 2.53 ppm or 2.53X106 n = Con ܗ B. What volume of solution contains 2.53 g of the mineral? (1 point - Knowledge, 2 points - Inquiry, 1 point - Communication) VE? C: 2,53 ppm ns Cen

To vaporize 43.0 g of water, more heat needs to be given as a input for the heat of fusion of water is 79.7 cal/g and the heat of vaporization is 540 cal/g.

The necessary thermal/heat energy input is:

Q ( heat) = (mass of water)(heat of phase transition)

Given: Heat of fusion is 79.72 cal/g

So, heat needed to be supplied to melt solid ( ice) to water is +79.72 cal/g

Similarly, to freeze water to ice ( reverse of fusion), the same heat must be released, that is, heat of freezing = ( - 79.72) cal/g

Heat of vaporisation is 540 cal/g

So, 540 cal/g of heat must be supplied to vaporise water.

And heat change when steam condenses is – 540 cal/g ( - sign implies heat is released).

The question asks for input of energy. So, the corresponding heat change must be positive.  Thus, the possible processes are melting and vaporizing.

To vaporize 43.0 g of water, total heat needed to be supplied = (43.0 g )(540 cal/g) = 23220 cal

To melt 380 g of ice: (380 g)(79.72 cal/g) = 30096 cal

So, to vaporize 43.0 g of water, more heat needs to be given

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The correct answer is carbocation.

There are two types of reactions: E1 and E2.

E1 mechanism is the Elimination mechanism. The only difference in these two is that the E1 reaction happens with unimolecular elimination reaction and E2 is the bimolecular elimination reaction.

There are typically two phases in the E1 mechanism, sometimes referred to as unimolecular elimination: ionization and deprotonation. Since there are two two phases so, there will be some intermediate step. This is carbocation.

Carbocation is created as an intermediate during ionization.

Since the E1 reaction uses a carbocation intermediate, the rearrangement of the carbocation could take place if it produces a more stable carbocation.

Carbocation is a carbon atom and this has a positive charge along with the three single bonds.

Carbocation is the organic molecule which is formed by the loss of two electrons.

In the reaction known as unimolecular elimination (E1), a double bond is created when a HX substituent is removed. It shares several characteristics with a unimolecular nucleophilic substitution process (SN1).

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Answer:

inner energy shells are involved in radioactive activity

Answer: I think its NUCLEUS

Explanation: Good luck yall