A solution is prepared by dissolving 8.50 g of c6h12o6 in 4.15 g of cyclohexane. what is the % mass of c6h12o6 in the new solution? round your answer to 1 decimal places.

The initial volume of the gas was approximately 14.5 liters. The molar volume of a gas expresses the volume occupied by 1 mole of that respective gas under certain temperature and pressure conditions. This answer supports our expectation from Charles law.

To find the initial volume, we can use the Ideal Gas Law formula, which is PV = nRT. Here, P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant (8.314 J/mol·K), and T is the temperature in Kelvin. Step 1, Convert the given pressure from kPa to Pa by multiplying by 1000. So, 60.0 kPa * 1000 = 60000 Pa. Step 2, Plug the values into the Ideal Gas Law formula: 60000 Pa * V = 1.50 mol * 8.314 J/mol·K * 115 K. Step 3, Solve for V: V = 1.50 mol * 8.314 J/mol·K * 115 K / 60000 Pa. Step 4, Calculate the volume: V ≈ 14.5 liters.

So, you started with approximately 14.5 liters of gas. Finally, we can use the fact that the initial number of moles of particles was 1.50, and that only 1.00 moles remained after some gas escaped, to calculate the initial volume of the gas, so the correct number is 14.5 liters.

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Ignoring the effects of recoil, the minimum energy must the photon have for this reaction to occur is 10 MeV

The nuclear reaction is (28,14)Si+ γ---(24,12)Si+He(2,4)

The binding energy that holds the nuclide is

E=Δmc^2

where Δm is the mass defect

Δm=27.976927+0-[23.985042+4.002602]

Δm=-0.010717x1.66054x10^-27 kg

So the minimum energy of photon should be

ΔE=Δmc^2=0.017796x10^-27x(3x10^8)^2/1.6x10^-19 V

ΔE= 10 MeV

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Answer:

aluminum has 3 energy levels and 3 valance electrons

The regiochemistry of hydroboration/oxidation of alkenes is (a) Markovnikov.

The hydroboration/oxidation reaction follows Markovnikov's rule, which states that the electrophile (in this case, the boron atom) adds to the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it. The regioselectivity of the reaction is determined by the relative stability of the carbocation intermediates formed during the reaction.

In hydroboration, the boron atom adds to the less substituted carbon atom of the double bond, leading to the formation of a boron-alkyl bond and a boron-hydrogen bond. Subsequently, in the oxidation step, the boron-alkyl bond is replaced with an alcohol group (-OH) while maintaining the regiochemistry established during hydroboration.

Therefore, the regiochemistry of hydroboration/oxidation of alkenes is Markovnikov, where the electrophilic addition occurs preferentially at the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it.

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Answer:

The term niche, when used in the science of ecological biology, is used to define an organism's role in an ecosystem. Not only does its niche include the environment that a given organism lives in, but it also includes the organism's "job" in that environment.

Answer:

a niche is an area within an ecosystem in which a particular group of organisms live in.

Answer:

As ozone is tri-atomic molecule, made up of the 3 O-atoms, hence, as all atoms are same. Ozone has coordinate bond hence these can not form the ionic compound. While all others are ionic compound.

Answer:

Explanation:

Ionic bonds are not formed by atoms that find it difficult to obtain or lose electrons from their outermost orbit.

Example: silicon and carbon.

3 moles of NaOH reacts with 1 mole of phosphoric acid.

The moles ratio of the reaction between NaOH and Phosphoric acid is given by the equation of the reaction below:

\(3\:NaOH + H_{3}PO_{4} \rightarrow Na_{3}PO_{4} + 3\:H_{2}O \\ \)

Based on the equation of the reaction, 3 moles of NaOH reacts with 1 mole of phosphoric acid.

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They mimicked the flight of birds.

Answer:

B.

Explanation:

Just took the test

To determine the number of moles of hydrogen needed to crack one mole of the long saturated hydrocarbon chain (C40H82), we can analyze the reactants and products involved in the cracking reaction.

The cracking reaction is given as: C40H82 -> 3 C8H18 + n C2H6. From the equation, we can see that one mole of the long hydrocarbon chain (C40H82) produces three moles of octane (C8H18) and n moles of ethane (C2H6). Since the cracking process involves breaking the carbon-carbon bonds and forming new carbon-hydrogen bonds, the number of hydrogen atoms in the products should remain the same as in the reactant.

The long hydrocarbon chain (C40H82) contains 82 hydrogen atoms, and the products, 3 moles of octane (C8H18), contain (3 moles) * (18 hydrogen atoms/mole) = 54 hydrogen atoms. Therefore, the number of moles of hydrogen needed for cracking one mole of the long hydrocarbon chain can be calculated as: Number of moles of hydrogen = 82 - 54 = 28 moles. Hence, 28 moles of hydrogen are required to crack one mole of the long saturated hydrocarbon chain (C40H82).

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Answer:

When light waves strike a medium and are neither reflected or refracted, nor are they allowed to pass through.

Explanation:

This is not the best way to organize a periodic table because two elements might have similar atomic mass.

Periodic table is a chart in which arrangement of chemical elements are done.

In the early periodic table elements are arranged on the basis of their atomic masses, while after sometime Moseley arranged the periodic table on the basis of atomic number as he proposed that properties of an element is justified on the basis of number if electrons.

And mass of two substances may be same so it is difficult to differentiate between them.

Hence, two elements might have similar atomic mass.

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Water is most  polar solvent that is used for the process of re-crystallization and Ethanol is less polar than water .  Ethanol is miscible with both water and hexane.

Water acts as a polar solvent because it can attracted to either the positive or negative electrical charge on the solute .Hence, water is most polar solvent. Ethanol is less polar to water but  very polar molecule due hydroxy group, which forms hydrogen bond with other molecules.Hexane is a non polar compound.

The two liquids that mix completely together are called as miscible liquids.Ethanol is miscible with water and hexane both.water and ethanol both are the pair of miscible liquids because ethanol and water can mix together completely and we get a clear colorless liquid.ethanol can mixed in water in any proportion without any limit.

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Answer:

Plants respond to changes in the environment by growing their stems, roots, or leaves toward or away from the stimulus. This response, or behavior, is called a tropism.

the release of energy

The increase in the diversity of species in an ecosystem  definitely lead to an increase in the productivity from that ecosystem. Hence, the statement is true.

An ecosystem is the regions in earth where  a group of living things and their essential non living things reside. There are various kind of ecosystems such as aquatic systems, forests, deserts etc.

The biodiversity refers to the diverse species of plants , animals and all other kind of livings there. By raising the possibility that species would use complementary resources and by increasing the likelihood that a highly productive or efficient species is present in the population, increasing species diversity can impact ecosystem functions, such as production.

For instance, greater use of soil resources can boost ecosystem production when there is a large diversity of plants. Similarly, when diverse plants populate more dependent animal variants survives more.

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Answer:

A. True

Explanation:

Got it right on Edge 2023.

Answer:

the answer is B

Explanation:

the ice puts 8ts cold into the water taking it away from the ice

The symbol of microliter is μL. It is defined as a unit of volume in the metric system.

Microliter is defined as a unit of volume in the Metric System. The symbol for microliter is μL. The base unit for this is liter and the prefix is micro. The prefix micro is derived from the Greek "mikrós" meaning small and it is symbolized as μ. It denotes a factor of one millionth (10-6) which means that there are 1,000,000 microliters in a liter. The symbol of microliter is μL.

  1 μL = \(10^{-3}\) μL.

It is a small volume and that is measurable in a typical laboratory. The use  of microliter volumes would be in preparation of an electrophoresis sample when isolating DNA or during chemical purification. This is measured and dispensed using micropipettes.

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The bond that links monosaccharides in di- and polysaccharides is called glycosidic.

What is a glycosidic bond?

A glycosidic bond is a covalent bond that connects a sugar molecule to another group or molecule, such as a glycosyl residue.

Glycosidic bonds form between two monosaccharides or between a monosaccharide and another molecule.Di- and polysaccharides are formed when several monosaccharide molecules are connected through glycosidic bonds.

Di- and polysaccharides are also referred to as glycoconjugates due to the presence of carbohydrate molecules on their surfaces, which aid in the identification of cells by the immune system.

To further elaborate, a glycosidic bond forms when a hydroxyl (-OH) group on one sugar molecule reacts with the anomeric carbon atom (the carbon atom that was involved in the carbonyl group of the sugar molecule) of another sugar molecule, resulting in the formation of a new covalent bond and the release of a molecule of water (H2O).

The resulting structure is known as a glycoside.

The type of glycosidic bond that forms depends on the orientation of the hydroxyl group on the anomeric carbon atom. If the hydroxyl group is pointing downwards (in the alpha configuration), an alpha-glycosidic bond forms.

If the hydroxyl group is pointing upwards (in the beta configuration), a beta-glycosidic bond forms.

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Answer:

you would expect 0 radioactive nuclei to be present

Explanation:

got it right on the assignment

keeps soils at a comfortable temperature. Composting helps to keep soil temperatures at a consistent level, which helps to optimize the growth of beneficial organisms and plants.

Temperature is a measure of the degree or intensity of heat or cold in a body or environment. Temperature is measured using a thermometer, which is an instrument that detects the temperature of an object or environment by measuring the intensity of certain physical properties such as thermal expansion of gas, electrical resistance or the velocity of sound. Temperature is typically measured in degrees Celsius (°C) or degrees Fahrenheit (°F). When the temperature of a body or environment is higher than usual, it is said to be hot; when it is lower than usual, it is said to be cold.

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Answer:

c. makes nutrients more accessible to organisms

Explanation:

i took the test

Answer:

The answer is nuclear

Explanation:

The Sun is a main-sequence star, and, as such, generates its energy by nuclear fusion of hydrogen nuclei into helium.

The mass of AI needed to react with 72 g of HCI is 54 g.

To determine the mass of AI needed to react with 72 g of HCI, we can use the stoichiometry of the balanced chemical equation you provided:

2AI + 6HCI --> 2AICI3 + 3H

From the equation, we can see that 2 moles of AI react with 6 moles of HCI to produce 2 moles of AICI3.

This means that the mole ratio between AI and HCI is 2:6 or 1:3.

Given the molar mass of HCI is 36 g/mol, we can calculate the number of moles of HCI in 72 g of HCI by dividing 72 g by the molar mass of HCI:

Number of moles of HCI = mass of HCI / molar mass of HCI

Number of moles of HCI = 72 g / 36 g/mol

Number of moles of HCI = 2 moles

Since the mole ratio between AI and HCI is 1:3, the number of moles of AI needed to react with 2 moles of HCI is also 2 moles.

Now, we can use the molar mass of AI, which is 27 g/mol, to calculate the mass of AI needed to react with 2 moles of HCI:

Mass of AI = number of moles of AI × molar mass of AI

Mass of AI = 2 moles × 27 g/mol

Mass of AI = 54 g

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Answer:

D- Assertion is false and Reason is true

Explanation:

Precipitation is said to have occurred when an insoluble product is formed from soluble ones. Let us take an instance;

BaCl2(aq) + H2SO4(aq) -------> BaSO4(s) + 2HCl(aq)

The barium sulphate so formed is an insoluble product obtained from the reaction of soluble barium chloride and sulphuric acid. This is a typical example of a double replacement reaction as the both ions exchanged partners.

Thus, the assertion is false but the reason is true.

Answer:

your answer will be A. The potential energy decreases due to the tighter arrangement of the particles.

Explanation:

if you go to connexus and are doing the science

Thermal Energy Unit Test 10 qestions 8th grd unit 5 test lesson 12 here are the correct answers

1. A. metal is heated from room temperature to 200'C.

2. B. The particles will have more space between them as steam, but they will be moving at the same speed in both states.

3. C. The potential energy decreases due to the tighter arrangement of the particles.

4. B. an increase in heat and an increase in kinetic energy until a phase change occurs.

5. C. thermometer

6. B. 4.

7. D. convection

8. C. Air moves from the areas of higher temperature to areas of lower temperature.

9. C. The temperature of the ice increases, while the temperature of the water decreases

10. A. heat transfer by radiation.

i hope this helps and please let me know if it does! = ) <3

An ice cube tray full of water is put into a freezer.The potential energy decreases due to the tighter arrangement of the particles. Therefore, option A is correct.

Potential energy is the energy held by an object as a result of its position in relation to other objects, internal stresses, electric charge, or other factors.

Because of its position, an object can store energy. When a demolition machine's heavy ball is held in an elevated position, it stores energy. This stored positional energy is known as potential energy. Similarly, the position of a drawn bow allows it to store energy.

Because any object lifted from its resting position has stored energy, it is referred to as potential energy because it has the potential to do work when released.

Thus, option A is correct.

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An electron not only moves around the nucleus but also has wave-like properties. The wave-like behavior of electrons is described by the theory of quantum mechanics.

Quantum mechanics is a branch of physics that studies the behavior of matter and energy at the microscopic level. The theory provides a mathematical description of the wave-particle duality of matter and energy. It also describes the interactions between particles and the laws of nature that govern them.

The wave-like properties of electrons refer to the wave nature of particles. It is a fundamental principle of quantum mechanics that all particles have both wave-like and particle-like behavior. This duality is a fundamental aspect of the theory and has been confirmed experimentally in numerous experiments.

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Answer:

I think D

Explanation:

Kinetic energy has a direct relationship with mass, meaning as mass increases so does the kinetic Energy of an object.

The reaction is used for the anabolism is the dehydration. that means the loss of the water molecules.

The water is the universal solvent. water is the chemically reactive compound and the number of the biochemical reactions takes place. The hydrolysis is the reaction in which use water molecule break the bonds in between the large compounds. the hydrolysis reaction is used in the catabolism. such as the depolymerization of the protein molecules.

In the condensation reaction , the two molecules joined to form the large molecule. this reaction will leads to the water molecule loss. this is called dehydration reaction. the dehydration reaction used in the anabolism reaction or anabolic reaction.

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Answer:

its c

Explanation: