Can someone tell me the answers ​

Answer:

2.5 silly = 0.00025 kilosilly

Explanation:

To convert: \(2.5\) silly to kilosilly

Solution:

Relation between \(2.5\) silly and kilosilly is given as follows:

1 silly = \(\frac{1}{1000}\) kilosilly

Now use this formula to convert \(2.5\) silly to kilosilly.

\(2.5\) silly\(=\) \(\frac{2.5}{1000}\) kilosilly

Here, \(\frac{2.5}{1000} =0.00025\)

So,

2.5 silly = 0.00025 kilosilly

In comparison to hydrogen chloride, ammonia diffuses 1.46 times more quickly.

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Answer:

Option A. KCl (aq)

Option D. Mg(OH)₂(s

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

MgCl₂(aq) + KOH(aq) —>

In solution, MgCl₂(aq) and KOH(aq) will dissociate as follow:

MgCl₂(aq) —> Mg²⁺(aq) + 2Cl¯(aq)

KOH(aq) —> K⁺(aq) + OH¯(aq)

MgCl₂(aq) + KOH(aq) —>

Mg²⁺(aq) + 2Cl¯(aq) + 2K⁺(aq) + OH¯(aq) —> 2K⁺(aq) + 2Cl¯(aq) + Mg(OH)₂ (s)

MgCl₂(aq) + KOH(aq) —> 2KCl (aq) + Mg(OH)₂(s)

Thus, the products of the above reaction are: KCl(aq) and Mg(OH)₂(s)

Thus, option A and D gives the correct answer to the question.

Answer: Psilocybin (4-phosphoryloxy-N, N-dimethyltryptamine) is the active chemical in certain mushrooms that causes hallucinogenic effects.

Explanation:

An active chemical in certain mushrooms that causes hallucinogenic effects is psilocybin.

Some types of mushrooms, referred to as "magic mushrooms," contain psilocybin.

This chemical molecule, when consumed, is changed into psilocin, which causes the hallucinogenic experiences seen by users.

Mushrooms provide protein, vitamins, minerals, and antioxidants. These might offer several health benefits.

For instance, antioxidants are chemicals that help the body eliminate free radicals.

Free radicals are unfavourable byproducts of metabolism and other biological processes. If they accumulate, oxidative stress could start to appear in the body. This can harm the body's cells and result in a variety of diseases.

Some of the antioxidants found in mushrooms include the following:

Choline, selenium, and vitamin C.

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Answer:

If the temperature of the system is increased, then the equilibrium position would shift to the right side. According to Le Chatelier's principle, when a stress is applied to a system in equilibrium, the system will adjust itself to counteract the stress. In this case, increasing the temperature would be an external stress on the system, and the reaction would shift to consume more of the reactants, namely CH4 and H2S, to create more of the products, CS2 and H2, thus shifting the equilibrium position towards the products.

Explanation:

Explanation:

1. volume

2. pressure

3. moles

4. temperature

5. temperature

6. moles

7. pressure

8. volume

9. pressure

10. volume

Answer:

bronze - solid

pure water - liquid

tap water - liquid

trail mix - solid

Explanation:

There are 4 classes of matter based on the characteristics of their molecules:

The molecules in solids are tightly packed together and are more or less fixed about a point with very little of no movement. The molecules in liquids are less tightly packed and are able to take the shape of their containers. The molecules in gases are loosely packed and compressible. They can take the shape of containers as well as expand to a container due to their loosely packed molecules.

Plasma molecules neither have shape nor volume but are able to produce both magnetic and electric currents as well as respond to electromagnetic fields.

Hence bronze has all the characteristics of a solid, pure and tap water both have the characteristics of a liquid, while trail mix can be considered a solid.

No, the two nuclei with different mass numbers (a₁ and a₂) are not necessarily isotopes of the same element. Isotopes of an element have the same number of protons (atomic number), but they can have different numbers of neutrons (mass number).

However, if two nuclei have different mass numbers, it means they have different numbers of protons and/or neutrons, indicating that they belong to different elements or isotopes of different elements.

Isotopes of an element have nearly identical chemical properties but differ in their atomic mass. They have the same number of protons, determining their elemental identity, but varying numbers of neutrons. This difference in neutron count results in different mass numbers.

Therefore, if two nuclei have different mass numbers, it implies that they have different numbers of protons and/or neutrons, indicating that they are not isotopes of the same element.

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Answer:

C. Condensation

Explanation:

When molecules release heat energy, it is called exothermic. In this case, condensation would be an example of this.

Answer: it is C condensation

Explanation: I took the quiz

Hope this helps

Hane a nice day

Could you mark me as branly if you could thank you :)

The sponge is unsaturated when it is taking in more water. It becomes saturated when it stops taking in water. It is supersaturated when water starts oozing out from the sponge.

A saturated solution contains just as much solute as it normally hold at a particular temperature. An unsaturated solution contains less solute than it can normally hold at a particular temperature. A supersaturated solution contains more solute than it can normally hold at a particular temperature.

We can use a sponge to model these three scenario as follows;

Water continues to enter into the sponge when it is unsaturated, this continues until the sponge becomes saturated with water and takes in no more water. When the sponge becomes supersaturated, water begins to ooze out from the sponge because it can no longer hold more water.

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Answer:

The correct answer is - butanoic acid

Explanation:

An empirical formula is the general formula or base formula that is the simplest positive integer ratio of atoms present in a compound. The empirical formula is specific to specific compounds or types of compounds.

Among the given options, the empirical formula C2H4O is butanoic acid as the molecular formula of butanoic acid is - C4H8O2 which is multiple of C2H4O. Other compounds have different than this empirical formula.

Answer:

Gavin magnus

Explanation:

I don't really care tho

Answer:

3846g of Carbon tetrachloride is in the chemical equation.

Explanation:

The Balanced equation is :

   CH4 + 4CL2 -> CCL4 + 4HCL

Converting grams to moles ;

  Moles of CL2 = Mass / Molar mass

  Molles of CL2 = 709.0g/70.906g/mol => 10 moles

  Moles  of CCL4 = Moles of CL2 / 4

  Moles of CCL4 = 10 moles/ 4 => 2.5 moles

Converting moles of CCL4 to grams:

 Mass of CCL4 = Moles of CCL4 x Molar mass of CCL4

 Mass of CCL4 = 2.5 moles x 153.823 g/mol => 384.5575 grams

Therefore 384.6 grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine.

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Rutherford's experiments showed that most of the volume of the gold atom is empty space and the alpha particles and the gold nuclei are both positively charged therefore, option C is the right answer.  

Rutherford put out the idea that elements are composed of atoms. The Rutherford atomic model states that:

A majority of an atom's mass and the vast majority of its positive charge are packed into a very small space. He coined the term "nucleus" to describe this part of the atomic structure.

According to Rutherford's hypothesis, an atom's negatively charged electrons should orbit the positively charged nucleus. He also theorized that the electrons that orbit the nucleus do so in a circular fashion at extremely high velocities. These arcs got the orbital naming from him.

Electrons, being negatively charged, are attracted to the positively charged nucleus with a strong electrostatic force of attraction.

Rutherford bombarded a thin gold foil with α-particles and examined their trajectory after impact. Rutherford focused radioactive α-particles towards a thin gold sheet in his experiment. He wrapped a fluorescent zinc sulfide screen around the thin gold foil to analyze α-particle deflection. Rutherford's observations contradicted Thomson's atomic model.

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Manipulation of the independent variable directly, Extraneous variable control, Extraneous variable control, statistically correct for the variable's influence.

define experimental ?

relating to, based on, or having the nature of experiment: an experimental study. based on or derived from experience; empirical: experimental evidence. tending to experiment: an experimental artist. tentative or provisional: an experimental rule in football.

an experimental science. relating to, developed from, or founded on experiment: an experimental science. of the nature of an experiment; provisional:

The new software is still in the testing phase.

An experimental aeroplane is one that is in the process of being tested.

based on or drawn from experience; empirical: experimental knowledge.

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The pH of a solution that has a concentration of \(2.78 * 10^{-3}\)M is 2.56. The aqueous solution is acidic because it is less than 7 on the pH scale.

pH is a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid and higher values more alkaline.

The pH is equal to −log {H}

According to this question, \(2.78 * 10^{-3}\) of hydrogen bromide is given. The pH can be estimated as follows:

pH = \(- log\) {\(2.78 * 10^{-3}\)}

pH = 2.56 (acidic)

The complete question is as follows:

What is the hydronium ion concentration for an aqueous solution with a hydroxide ion concentration of 2.78x10^-10 M? Is the solution acidic basic or neutral?

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The type of receptor that facilitates this process is called an ion channel receptor.

Ion channel receptors are integral membrane proteins that form pores or channels in the cell membrane, allowing the passage of specific ions, such as calcium (Ca²⁺), across the membrane. These receptors can be gated, meaning their channels can be opened or closed in response to specific signals or ligands.

In the given scenario, when a ligand binds to the external domain of the protein, it causes a conformational change in the receptor. This conformational change leads to the opening of the ion channel, enabling the passage of calcium ions through the receptor and into the cell.

Therefore, the receptor involved in this process is an ion channel receptor, specifically facilitating the passage of calcium ions.

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Answer:

4665.97

Explanation:

Answer:

Q = -2090 J

Explanation:

Given that,

Mass, m = 50 g

Water is cooled from 70°C to 60°C.

We need to find how many heat energy are released. Heat released is given by :

\(Q=mc\Delta T\)

c is the specific heat of water, \(c=4.18\ J/g-C\)

Putting all the values,

\(Q=50\times 4.18\times (60-70)\\\\Q=-2090\ J\)

So, the heat energy released is 2090 J and negative sign shows heat is released.

Answer:

it is 2,100J

Explanation:

Answer:

Paleoclimatology

Step by Step explanation:

is the study of climate records from hundreds to millions of years ago. Information for paleoclimate studies come from natural records rather than instruments: these indirect records of climatic conditions are called proxy records. Coring a tree to gain access to tree ring data.

A value for the enthalpy of solution of magnesium oxide is not found in data books because magnesium oxide is considered insoluble in water.

The process of dissolving involves the separation of solute particles from each other and the breaking of solvent molecules to make way for the solute.

However, due to the strong ionic bond between magnesium and oxygen in magnesium oxide, it does not dissociate into its constituent ions in water, making the enthalpy of solution for magnesium oxide not applicable.

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The acronym for the detailed profile of a single chemical or mixture provided by the manufacturer and/or supplier and collected by the Local Emergency Planning Committee (LEPC) in a jurisdiction is MSDS, which stands for Material Safety Data Sheet.

An MSDS is a comprehensive document that contains information about the physical and chemical properties, hazards, handling, storage, and emergency response procedures for a particular chemical or mixture.

It provides essential details to ensure the safe handling, storage, and disposal of the chemical, as well as information on potential health hazards and necessary precautions.

MSDSs are an important resource for emergency responders, workers, and other individuals involved in the handling and management of chemicals, aiding in the promotion of safety and compliance with regulations.

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Answer:

I think the answer is the 3rd one

Aconitate hydratase is the enzyme which performs an isomerization reaction carried out by dehydration and hydration steps.

These are proteins which serves as biological catalyst thereby accelerating the rate of chemical reaction.

This enzyme catalyses the stereo-specific isomerization of citrate to isocitrate and contains a 4Fe-4S cluster that is involved in substrate binding.

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The cell potential for this voltaic cell with a 2.995 M solution of Zn²⁺ and 0.1536 M solution of Cu²⁺ at 420.1 K is approximately 1.0671 V.

To calculate the cell potential at non-standard conditions, we can use the Nernst equation:

E_cell = E°_cell - (RT/nF) × ln(Q)

Here, E°_cell is the standard cell potential, R is the gas constant (8.314 J/mol K), T is the temperature in Kelvin (420.1 K), n is the number of electrons transferred in the reaction (2 for this reaction), F is Faraday's constant (96,485 C/mol), and Q is the reaction quotient.

First, let's calculate Q using the given concentrations of Zn²⁺ and Cu²⁺:

Q = [Zn²⁺]/[Cu²⁺] = (2.995 M)/(0.1536 M)

Now, we can plug the values into the Nernst equation:

E_cell = 1.1032 V - (8.314 J/mol K × 420.1 K) / (2 × 96,485 C/mol) × ln((2.995 M)/(0.1536 M))

After calculating the values:

E_cell ≈ 1.1032 V - 0.0361 V ≈ 1.0671 V

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A Bronsted-Lowry acid is defined by its ability to donate a proton. A Bronsted-Lowry acid is a substance that can donate protons (hydrogen ions) to other substances during a chemical reaction.

In a chemical reaction, a Bronsted-Lowry acid is any species that loses a proton and a Bronsted-Lowry base is any species that accepts a proton.The Bronsted-Lowry definition of acids and bases defines an acid as a substance that donates hydrogen ions (H+) and a base as a substance that accepts hydrogen ions (H+). The Bronsted-Lowry acid-base theory is the most widely used definition of acids and bases, and it defines an acid as a substance that donates a proton and a base as a substance that accepts a proton.In summary, the ability of a Bronsted-Lowry acid is to donate a proton or hydrogen ion during a chemical reaction to another substance or base.

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Answer: 1.93 M

Explanation:

Molarity is Moles / Liters

1.45/0.75 L

Answer:

116.64 g

Explanation:

74.23÷14 This is # of moles .

# of moles for co = 5.302

Then mass of co2 = 116.64

The standard enthalpy of formation, ΔHf°, is the amount of heat released or absorbed when one mole of a compound is formed from its elements in their standard states. For nitrogen gas, N2(g), the standard enthalpy of formation is zero, since it is the element in its standard state.

To estimate the bond enthalpy of N2, we need to use Hess's law, which states that the enthalpy change of a reaction is independent of the pathway taken. In this case, we can use the following reaction:

N2(g) + 3H2(g) → 2NH3(g)

The standard enthalpy of formation of NH3(g) is -46.2 kJ/mol. Using the standard enthalpies of formation, we can calculate the enthalpy change of this reaction:

ΔH° = 2ΔHf°(NH3) - ΔHf°(N2) - 3ΔHf°(H2)
ΔH° = 2(-46.2 kJ/mol) - 0 - 3(0)
ΔH° = -92.4 kJ/mol

The enthalpy change of this reaction is also equal to the sum of the bond enthalpies of the bonds broken and formed. In this reaction, we break one N-N bond and six H-H bonds, and form six N-H bonds. Therefore, we can write:

ΔH° = (bond enthalpy of N-N) + 6(bond enthalpy of H-H) - 6(bond enthalpy of N-H)

Solving for the bond enthalpy of N-N:

bond enthalpy of N-N = (ΔH° + 6(bond enthalpy of N-H) - 6(bond enthalpy of H-H))/1
bond enthalpy of N-N = (-92.4 kJ/mol + 6(-46.2 kJ/mol) - 6(436 kJ/mol))/1
bond enthalpy of N-N = (-92.4 kJ/mol - 277.2 kJ/mol)/1
bond enthalpy of N-N = -369.6 kJ/mol

Therefore, the estimated bond enthalpy of N2 is -369.6 kJ/mol, which is approximately equal to 369.6 kJ/mol. The answer that is closest to this value is (c) 326 kJ/mol.        

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