A piece of roasted salted fish is put in a mouse trap. Explain why a mouse comes to the trap. ​

There are a few methods that can be used to determine the volume of hydrogen produced during the electrolysis of sodium chloride. Here is one method:

1. Set up the electrolysis cell with the sodium chloride solution as the electrolyte and the electrodes in place. Make sure the cell is sealed and that the hydrogen and oxygen produced during the reaction can be collected.

2. Turn on the power supply and start the electrolysis reaction. Make sure to monitor the reaction and record any relevant data, such as current, voltage, and time.

3. When the reaction is complete, turn off the power supply and carefully remove the hydrogen and oxygen gas collectors from the cell.

4. Measure the volume of the hydrogen gas collected using a gas displacement method. This can be done by measuring the volume of water displaced by the gas in a graduated cylinder or by using a gas pressure gauge to measure the pressure of the gas and converting the pressure to volume using the ideal gas law.

5. Calculate the volume of hydrogen produced by subtracting the volume of oxygen produced from the total volume of gas produced. This value represents the volume of hydrogen produced during the electrolysis reaction.

6. If desired, the mass of the hydrogen produced can be calculated by multiplying the volume of hydrogen by its density. The density of hydrogen gas at standard temperature and pressure (STP) is 0.08988 g/L.

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I would first gather the required materials before using the appropriate method to analyse the volume of hydrogen generated during the electrolysis of sodium chloride.

This would consist of a gas syringe, electrodes, a power source, a beaker, and a sodium chloride solution. I would then get started on the solution. To make the necessary amount of sodium chloride, I would measure it out and mix it with distilled water.

After that, I would add the solution to the beaker. I would then prepare the experiment. The electrodes would be connected to the power source, and then placed inside the beaker. The power supply would then be turned on, and I would wait for the electrolysis to begin.

To collect the generated gas, I would use the gas syringe. I would keep track of the amount of gas created before figuring out the amount of hydrogen produced. I would be able to precisely gauge the volume of hydrogen generated during the electrolysis of sodium chloride using this technique.

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A nucleotide is a molecule that consists of a sugar, a phosphate group, and a base that contains nitrogen.

The part of the DNA double helix that gives the molecule's structure support is known as the phosphate backbone.

A form of sugar called ribose is often produced by the body from glucose. Ribose is crucial for the production of RNA, DNA, and the energy-rich compound adenosine triphosphate (ATP).

Deoxyribonucleic acid (DNA) is made up of the four nucleotides A, C, G, and T. These nucleotides are linked together by a backbone made up of alternating phosphate and deoxyribose sugar residues.

Purines and pyrimidines are the two different types of bases that include nitrogen. A six-membered and a five-membered nitrogen-containing ring are fused together to form purines. Pyridmidines only have a ring with six members that contains nitrogen.

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The balanced equation for the dissociation of PO43- is given by;PO43-(aq)  H2O(l) ⇌ HPO42-(aq)  OH-(aq)The phosphate ion, PO43-, reacts with water to form HPO42- (monohydrogen phosphate) and OH- ions.

The chemical equilibrium between these species is represented by the equation above. In the dissociation reaction of PO43- the phosphate ion reacts with water (H2O) to form monohydrogen phosphate ion (HPO42-) and hydroxide ion (OH-). The reaction can be described as;PO43-(aq)  H2O(l) ⇌ HPO42-(aq)  OH-(aq)where the reactants are on the left and products on the right. In the equation, the state of matter of each reactant or product is written in parenthesis after its chemical formula. In this reaction, the reactant PO43- is an aqueous solution, while H2O is a liquid.

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Both 1 mol of sodium chloride and 1 mol of aluminum chloride are made up of 6.02x\(10^{23\) formula units.The correct answer is D.

A) The statement "Both have the same molar mass" is incorrect. Sodium chloride (NaCl) and aluminum chloride (\(AlCl_3\)) have different molar masses. The molar mass of NaCl is approximately 58.44 g/mol, while the molar mass of \(AlCl_3\)is approximately 133.34 g/mol.

B) The statement "Both have the same number of ions" is also incorrect. Sodium chloride consists of one sodium ion (Na+) and one chloride ion (Cl-), while aluminum chloride contains one aluminum ion \((Al^3\)+) and three chloride ions (Cl-). Therefore, they have a different number of ions in their respective formulas.

C) The statement "Both are made up of 6.02x\(10^{23\) molecules" is not accurate. Sodium chloride and aluminum chloride are ionic compounds and do not exist as discrete molecules. Therefore, they cannot be compared based on the number of molecules.

D) The statement "Both are made up of 6.02x\(10^{23\) formula units" is correct. Avogadro's number (6.02x\(10^{23\)) represents the number of particles in 1 mole of a substance. In the case of sodium chloride and aluminum chloride, 1 mol of each compound contains 6.02x\(10^{23\)formula units.

In sodium chloride, there is one formula unit of NaCl per mole, and in aluminum chloride, there are one formula unit of \(AlCl_3\)per mole.

Option D

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Answer:

of the Drain! What happens to rain after it falls? Rainwater, or snow melt, either soaks into the ground to become groundwater, evaporates, or flows over the surface of the land. The water that flows over the ground is called stormwater or runoff.

The substance 'X' used for whitewashing is calcium oxide also known as quicklime. Its chemical formula is CaO.

Calcium oxide is formed by the thermal decomposition of calcium carbonate, found mainly in limestone, coral reefs, and seashells. It is used in various industrial processes.

When Calcium oxide(X)  is mixed with water, it undergoes an exothermic reaction and produces calcium hydroxide, also known as slaked lime.

The reaction of Calcium oxide(X) with water(H2O) is:

CaO + H2O → Ca(OH)2 + heat

The product formed is Ca(OH)2 known as Calcium hydroxide.

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Answer:

A

Explanation:

Hopefully this helps

Answer:

A copy of DNA is made from existing DNA.

Explanation:

Just did the quiz

Reaction 1 is nuclear fusion

Reaction 2 is nuclear fission

Nuclear fission is the process in which the nucleus of an atom is split into two or more smaller nuclei while Nuclear fusion, on the other hand, is the process in which two or more atomic nuclei combine to form a larger nucleus.

In reaction 1, there is the combination of hydrogen nuclei while in reaction 2 we have the breaking apart of a uranium nuclei. This is fission and fusion reactions respectively.

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10.45 kJ heat would be needed to change the temperature of 100g water from 10°C to 50°C.

Temperature is the degree of hotness or coldness expressed in phrases of any of several scales, inclusive of Fahrenheit and Celsius. Temperature shows the direction in which warmness electricity will spontaneously waft i.e., from a hotter body to a colder frame.

calculation:-

Heat = ms× change in temperature.

= 100 × 4.2 × 50-10

= 100 × 4.2 × 40

= 10.45 J

The heat of an item is the whole energy of all of the molecular movement inside that item. Temperature is the degree of the thermal power or common heat of the molecules in a substance.

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Answer:

im 99% sure it's 175.

Explanation:

keep trucking, i know school is hard but you're doing amazing

Answer:

This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.

Explanation:

Considering the Charles's law and STP conditions, the volume of the gas at standard temperature is 12.61 L.

Charles's law establishes the relationship between the volume and temperature of a gas sample at constant pressure.

This law says that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. That is, the volume is directly proportional to the temperature of the gas.

Mathematically, Charles's law states that the ratio between volume and temperature will always have the same value:

\(\frac{V}{T} =k\)

Considering an initial state 1 and a final state 2, it is fulfilled:

\(\frac{V1}{T1} =\frac{V2}{T2}\)

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In this case, you know:

Replacing in the definition of Charles's law:

\(\frac{13.4 L}{290 K} =\frac{V2}{273 K}\)

Solving:

\(V2= 273 K\frac{13.4 L}{290 K}\)

V2= 12.61 L

Finally, the volume of the gas at standard temperature is 12.61 L.

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1-61.11 ml of the 18 M solution is required to prepare 550 ml of a 2.0 M solution.

2-0.117 liters or 117 ml of the 1.5 M solution is required to prepare 25 ml of a 7.0 M solution.

To calculate the volume of concentrated 18 M solution required to prepare 550 ml of a 2.0 M solution, we can use the formula:

M1V1 = M2V2

where:

M1 = 18 M (concentration of concentrated solution)

V1 = volume of concentrated solution to be added (unknown)

M2 = 2.0 M (final concentration required)

V2 = 550 ml (final volume required)

Rearranging the formula to solve for V1:

V1 = (M2 x V2) / M1

Substituting the values given:

V1 = (2.0 M x 550 ml) / 18 M

V1 = 61.11 ml

To calculate the volume of concentrated 1.5 M solution required to prepare 25 ml of a 7.0 M solution, we can again use the formula:

M1V1 = M2V2

where:

M1 = 1.5 M (concentration of concentrated solution)

V1 = volume of concentrated solution to be added (unknown)

M2 = 7.0 M (final concentration required)

V2 = 25 ml (final volume required)

Converting the final volume required to liters:

V2 = 25 ml = 0.025 L

Rearranging the formula to solve for V1:

V1 = (M2 x V2) / M1

Substituting the values given:

V1 = (7.0 M x 0.025 L) / 1.5 M

V1 = 0.117 L

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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The correct solution to this question here is option c. The volume occupied by 9.03×10²³ molecules of N₂ gas at STP is closest to 33.6 L

We'll start by figuring out how many molecules of N2 gas there are in 9.03×10²³ molecules. This is attainable as follows:

From Avogadro's hypothesis

6.02×10²³ molecules = 1 mole of N₂

Therefore,

9.03×10²³ molecules = 1.5 mole of N₂

Finally, we will calculate the volume that 1.5 moles of N2 at STP occupy.

At standard temperature and pressure (STP),

1 mole of N₂ = 22.4 L

Therefore,

1.5 moles of N₂ = 1.5 × 22.4

1.5 moles of N₂ = 33.6 L

Thus, we can conclude that the volume occupied by 9.03×10²³ molecules of N₂ gas at STP is closest to 33.6 L

Therefore the solution is option c which is 33.6L

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Answer:

it is damp moist and other things

Explanation:

Answer:

it would be 25% sorry if I'm wrong

Answer:

Explanation:

a i think

Answer:

it would (a)

Explanation:

carcinogen is a substance that gives your tissues a higher chance of getting cancer

Answer: In other for an organism to survive it basic needs to met. Like : a place to breed its young, a shelter from the weather, food and water. Also the organism has to have an adaptable environment to survive or put it this way the organism has to adapt to his environment to survive.

Explanation:

The percent composition of anhydrous salt (MgBr2) is approximately 74.95%.

Anhydrous salt refers to the salt which doesn’t have any water molecules attached to its structure. MgBr2.6H2O is an example of hydrated salt. The formula states that there are six moles of water for every one mole of magnesium bromide. The formula mass of MgBr2.6H2O (hydrated salt) can be calculated by adding the formula mass of the anhydrous salt to the formula mass of six water molecules. So, the formula mass of the hydrated salt is:MgBr2.6H2O = 24.31 + (2 × 79.90) + (6 × 18.02) = 245.43 g/mol The formula mass of MgBr2 (anhydrous salt) is 24.31 + (2 × 79.90) = 184.11 g/mol.

The mass of water in the hydrated salt is 61.32 g/mol (6 × 18.02 g/mol).The percent composition of anhydrous salt MgBr2 in hydrated salt MgBr2.6H2O can be calculated by dividing the mass of anhydrous salt by the mass of hydrated salt and multiplying by 100. Therefore, the percent composition of anhydrous salt in hydrated salt is: Mass percent of MgBr2 = (184.11/245.43) × 100% ≈ 74.95%.

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The task of an employer who attempts identify dependable, conscient, hard-working job applicants is similar to task of industrial organizational psychologist, who attempts to identify, assess individual differences in the workplace.

Industrial refers to the application of scientific principles, knowledge, and practices in the context of industry and the workplace. It typically relates to the management, organization, and optimization of industrial processes, systems, and resources to enhance productivity, efficiency, and safety. Industrial processes can include manufacturing, production, logistics, quality control, and related areas. Industrial professionals, such as engineers and managers, work to design, implement, and improve systems, technologies, and strategies to maximize output, minimize waste, ensure safety standards, and achieve organizational goals within industrial settings.

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The formula of Hypolaryous acid wold depend on the valency of hydrogen and the valency of Laryine. The formula of  Hypolaryous acid will be HLy.

Hydrogen is an element in found in group 1 while Laryine is a halogen. Halogens are placed in group 17 while hydrogen is placed in group 1 for convenience.

Both hydrogen and Laryine have a valency of + 1. This implies that the compound formed by the two elements (Hypolaryous acid) will have the formula HLy.

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Answer:

You can infert that it has a mass of 40 grams.It also has desnity of 40 grams per millilieter.

Explanation:

The volume of water raised from the glass is equal to the density of the object which displaces water. Hence, 40 g/ml is the density of the rock.

The Greek mathematician and inventor Archimedes discovered the physical law of buoyancy, which states that any body completely or partially submerged in a fluid (gas or liquid) at rest is subject to an upward, or buoyant, force whose magnitude is equal to the weight of the fluid displaced by the body.

The volume of fluid that has been displaced is equal to the volume of an object that is completely submerged in the liquid or to the portion of the volume below the surface for an object that is only partially submerged.

Therefore, the density of the rock is equivalent to the volume of water level raised in the glass. Thus density of rock is 40 g/ml.

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Answer:

It is illegal

Explanation:

Fracking involves drilling deep into the earth crust in which a water mixture with high pressure is directed at the rock with the purpose of releasing the gas inside. This process is common in the exploration of natural gas and other hydrocarbons.

It is however illegal because the water are mostly contaminated due to the hydrocarbons present and harmful to life. It is advisable and the best to remove the water and recycle them in treatment plants

The reaction that occurs when solid iron(III) bromide is put into water can be written as: FeBr3 (s) + 3H2O (l) → Fe(OH)3 (s) + 3H+ (aq) + 3Br- (aq).

Here, the compound iron(III) bromide is put into water, which is a polar solvent.

The compound is a strong electrolyte as it dissociates into ions in the water.

The chemical formula for iron(III) bromide is FeBr3. It is a dark brown solid, and when it is put into water, it dissociates into its respective ions. Here, it forms Fe3+ and Br- ions.

The reaction can be written as:FeBr3 (s) + 3H2O (l) → Fe3+ (aq) + 3Br- (aq) + 3H+ (aq)

This is an example of an ionic compound dissolving in water, which is also known as an aqueous solution.

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Explanation:

it will be physical feeling cold after eating maybe related to the type of food you're eating even your diet that said extreme body chills your body is directing its energy and relativism and digesting the food you just saying bottom line feeling cold after eating is normal once in a while in some cases it might be a system of medical condition like diabetes or kidney disease

Answer:

The Eukaryotic cell has a nucleus

Explanation:

Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.