Which best explains why water has a high specific heat?

Answer:

Drop the egg as many times as you want on any floor, as log as it is an inch above your foot or less, it will not break.

Explanation:

If a building has 200 floors, and you go to the top, you are at the highest floor. If you drop it from 1 inch above your foot it will not break, moving to any other floor on the building, so long as you follow the rule it will not break.

Or you can use a boiled egg :P

Answer/Explanation: Two atoms of oxygen form the basic oxygen molecule--the oxygen we breathe that is essential to life. The third oxygen atom can detach from the ozone molecule, and re-attach to molecules of other substances, thereby altering their chemical composition.

Ozone is harmful to breath because it attacks lung tissue by interacting chemically with it.

Ozone, gas molecule, which is made up of three oxygen atoms.

Oxygen and Ozone are both molecules that contain the atom Oxygen. Both are necessary for life, but in different ways. Living things consume oxygen directly. By absorbing dangerous radiation in the atmosphere, ozone protects living things.

Ozone, whether in its pure form or in combination with other substances, can be damaging to one's health. When inhaled, ozone can cause lung damage. Chest pain, coughing, shortness of breath, and throat irritation can all be caused by quite low levels of ozone.

When the temperature is hot, an invisible gas called ozone can make breathing difficult for some people. When sunlight causes a chemical reaction between oxygen and some emissions from automobiles, this gas is produced.

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Neither the reduction and phosphorylation of glyceraldehyde 3-phosphate to produce 1,3-bisphosphoglycerate nor the oxidation of a molecule of NAD+ to NADH.

What is G3P and how does it work?

The energy-producing processes glycolysis and glycerolipid biosynthesis both require glycerol-3-phosphate (G3P), which is a necessary component.

                               Enzymes involved in G3P biosynthesis and catabolism, as well as those involved directly or indirectly in G3P biosynthesis, control the amount of G3P in plants.

What is the purpose of glyceraldehyde 3-phosphate?

The end result of the Calvin cycle is glyceraldehyde 3-phosphate, or G3P. A 3-carbon sugar, it serves as the building block for the creation of other carbs.

                                The cycle is continued in part by using this G3P to regenerate the RuBP, but some of it is also available for molecular synthesis and is utilized to create fructose diphosphate.

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Answer:

carbon dioxide hope I helped please mark brainliest

In the reaction 4 Cr²⁺(aq) + O₂(g) + 4 H⁺(aq) → 4 Cr³⁺(aq) + 2 H₂O(l), trace amounts of oxygen gas are removed from the mixture. This reaction involves redox processes, where oxidation and reduction occur simultaneously. The correct options are A and B.

A. O₂ (g) is reduced: This statement is true. In the reaction, the oxygen gas (O₂) gains electrons, changing its oxidation state from 0 to -2 (in H₂O). Gaining electrons is the process of reduction.

B. Cr²⁺(aq) is the oxidizing agent: This statement is also true. The oxidizing agent is the substance that causes the reduction of another species. In this case, Cr²⁺ causes the reduction of O₂ by accepting electrons and undergoing a change in its oxidation state from +2 to +3.

C. O₂(g) is the reducing agent: This statement is false. The reducing agent is the substance that causes the oxidation of another species. In this reaction, O₂ is reduced, not the reducing agent. The reducing agent is Cr²⁺, as it loses electrons and causes the oxidation of other species.

D. Electrons are transferred from O₂ to Cr²⁺: This statement is false. Electrons are transferred from Cr²⁺ to O₂. Cr²⁺ loses electrons and gets oxidized to Cr³⁺, while O₂ gains electrons and gets reduced to form H₂O.

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To calculate the amount of energy lost every second, we can use the formula for heat transfer through conduction:

Q = (k * A * (T1 - T2)) / d Where Q is the amount of heat transferred per unit time (energy lost per second) k is the thermal conductivity of the insulating material (0.29 W/(m·°C)) A is the surface area of the pip T1 is the temperature inside the pipe (275 °C)

First, let's calculate the surface area of the pipe. The pipe has a diameter of 2.10 m and a length of 300 m. The formula for the surface area of a cylinder is: A = 2πrh + 2πr^2 - r is the radius of the pipe (half of the diameter)
- h is the height of the pipe (length)

Given the diameter of 2.10 m, the radius is 2.10/2 = 1.05 m. Therefore, the surface area of the pipe is: A = 2π(1.05)(300) + 2π(1.05)^2 Now, we can substitute the values into the formula for heat transfer: Q = (0.29 * A * (275 - 20)) / 0.038

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Claim: The separation of Mesosaurus fossils can be explained by the continental drift hypothesis. Evidence: Fossil Distribution, Geological Similarities, Matching Climate and Habitat. The distribution of Mesosaurus fossils across South America and Africa, the geological similarities between these regions, and the matching climate and habitat conditions all support the claim that the separation of Mesosaurus populations can be explained by the process of continental drift.

Claim: The separation of Mesosaurus fossils can be explained by the continental drift hypothesis.

Evidence:

Fossil Distribution: Mesosaurus fossils are found in both South America and Africa. This distribution aligns with the hypothesis of continental drift, which suggests that these continents were once connected and later separated. The similarity in fossil remains on different continents supports the claim that Mesosaurus populations were separated when the continents drifted apart.

Geological Similarities: The geological formations and sedimentary layers in which Mesosaurus fossils are found in South America and Africa display remarkable similarities. This similarity implies that these regions were once part of the same landmass and were subsequently separated. The matching geological features provide further evidence for the separation of Mesosaurus populations due to continental drift.

Matching Climate and Habitat: Mesosaurus fossils indicate that the species was adapted to a freshwater environment. The presence of similar freshwater environments in both South America and Africa further supports the claim that Mesosaurus populations were separated when the continents drifted apart. The matching climate and habitat conditions provide evidence that supports the idea of geographic isolation and subsequent speciation.

In conclusion, the distribution of Mesosaurus fossils across South America and Africa, the geological similarities between these regions, and the matching climate and habitat conditions all support the claim that the separation of Mesosaurus populations can be explained by the process of continental drift.

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Answer:

1.In electronics

2 In medicine

3.In the construction

4.In jewelry

5.In machinery and automobiles

6.In agriculture

7.In the kitchen

8.Furniture

9. Security system

10 Bullion market

To calculate the pH at each volume of added acid, we need to use the formula:

pH = -log[H+]

First, we need to determine the number of moles of puradine in the 25.0ml sample:

moles of puradine = volume of sample (in L) x molarity of puradine
moles of puradine = 0.025 L x 0.125 mol/L
moles of puradine = 0.003125 mol

Next, we can set up a table to calculate the pH at each volume of added acid:

Volume of added acid (mL) | Moles of HCl added | Total moles of H+ | pH
---------------------------------------------------------------------
0                          | 0                  | 0.003125          | 2.90
5                          | 0.005              | 0.00363           | 2.44
10                         | 0.01               | 0.004375          | 2.36
15                         | 0.015              | 0.005125          | 2.28
20                         | 0.02               | 0.005875          | 2.22
25                         | 0.025              | 0.006625          | 2.16

To calculate the moles of H+ at each volume of added acid, we need to use the balanced chemical equation for the reaction between puradine and hydrochloric acid:

C5H4N4 + 4HCl → 4Cl- + C5H3N4H+

For every mole of HCl added, we get one mole of H+. Thus, the total moles of H+ at each volume of added acid can be calculated as follows:

Total moles of H+ = moles of puradine + moles of HCl added

Finally, we can calculate the pH at each volume of added acid using the formula:

pH = -log[H+]

Note that the initial pH of the puradine solution (at zero volume of added acid) is calculated using the Ka value for puradine (1.2 x 10^-5) and the Henderson-Hasselbalch equation. However, since the question only asks for the pH at each volume of added acid, we do not need to calculate the initial pH.

In summary, we can calculate the pH at each volume of added acid by setting up a table and using the formula pH = -log[H+]. The initial pH of the puradine solution can be calculated separately using the Henderson-Hasselbalch equation.

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Answer:

The mass number (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. The mass number is different for each different isotope of a chemical element.

The limestone sample is approximately 87.6% calcium carbonate based on the back titration with HCl and NaOH solutions.

To calculate the percentage of calcium carbonate in the limestone, we'll follow these steps:

1. Determine the moles of HCl used:

  Moles of HCl = Concentration of HCl * Volume of HCl used

  Moles of HCl = 0.200 mol/dm³ * 0.100 dm³ (volume of HCl used)

  Moles of HCl = 0.0200 mol

2. Determine the moles of NaOH used:

  Moles of NaOH = Concentration of NaOH * Volume of NaOH used

  Moles of NaOH = 0.100 mol/dm³ * 24.8 cm³ (volume of NaOH used)

  Moles of NaOH = 0.00248 mol

3. Calculate the moles of NaOH required to react with the excess HCl:

  Moles of NaOH required = Moles of HCl - Moles of NaOH used

  Moles of NaOH required = 0.0200 mol - 0.00248 mol

  Moles of NaOH required = 0.01752 mol

4. Determine the moles of CaCO₃ in the limestone:

  From the balanced equation, we know that 2 moles of NaOH react with 1 mole of CaCO₃.

  Therefore, Moles of CaCO₃ = 0.01752 mol / 2

  Moles of CaCO₃ = 0.00876 mol

5. Calculate the mass of CaCO₃ in the limestone:

  Mass of CaCO₃ = Moles of CaCO₃ * Molar mass of CaCO₃

  Molar mass of CaCO₃ = (40.08 g/mol) + (12.01 g/mol) + (3 * 16.00 g/mol)

  Molar mass of CaCO₃ = 100.09 g/mol

  Mass of CaCO₃ = 0.00876 mol * 100.09 g/mol

  Mass of CaCO₃ = 0.876 g

6. Calculate the percentage of calcium carbonate in the limestone:

  Percentage of CaCO₃ = (Mass of CaCO₃ / Mass of limestone) * 100

  Percentage of CaCO₃ = (0.876 g / 1.00 g) * 100

  Percentage of CaCO₃ = 87.6%

Therefore, the percentage of calcium carbonate in the limestone is approximately 87.6%.

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Complete Question:

Limestone is mainly calcium carbonate. A student wanted to find what percentage of some limestone was calcium carbonate. A 1.00 g sample of limestone is allowed to react with 100cm^3 of 0.200 mol dm^3 HCl. The excess acid required 24.8cm^3 of 0.100mol dm^3 NaOH solution in a back titration. Calculate the percentage of calcium carbon in the limestone

CN- (cyanide ion) contains a triple bond.

The species that contains a triple bond among the given options is CN- (cyanide ion). The cyanide ion consists of a carbon atom (C) bonded to a nitrogen atom (N) through a triple bond (C≡N).

Let's analyze the options one by one:

HCCl3: This molecule, trichloromethane or chloroform, consists of a carbon atom bonded to three chlorine atoms. There are no triple bonds present.

CO32-: This is the carbonate ion, which consists of one carbon atom bonded to three oxygen atoms. There are only double bonds between the carbon and oxygen atoms, and no triple bonds.

NH3: This is ammonia, which consists of a nitrogen atom bonded to three hydrogen atoms. There are no triple bonds present.

NO3-: This is the nitrate ion, which consists of a central nitrogen atom bonded to three oxygen atoms. There are only double bonds between the nitrogen and oxygen atoms, and no triple bonds.

CN-: This is the cyanide ion, which consists of a carbon atom bonded to a nitrogen atom through a triple bond (C≡N). The triple bond in the cyanide ion is the distinguishing feature among the given options.

Therefore, the species that contains a triple bond is CN- (cyanide ion).

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Answer: c

Explanation:

The Keq for the interconversion for the two chair conformers of methylcyclohexane at 25 °C is 18. The % of the chair conformers having an axial methyl group is A) 95%.

If the value of Keq is higher than 1, that means the reaction is favored in the forward direction. If the value of Keq is lower than 1, that means the reaction is favored in the reverse direction.If the value of Keq is equal to 1, that means the reaction is at equilibrium.Methylcyclohexane is an example of the cyclohexane molecule in which there is a substitution of a methyl group on one of the six carbon atoms in the ring structure. The two chair conformers of methylcyclohexane are the axial and equatorial conformers, in which the methyl group is either in an axial or equatorial position, respectively.

The percentage of chair conformers having an axial methyl group can be calculated using the following formula:

% axial conformer = Keq / (1+Keq) × 100

Putting the value of Keq in the formula:

axial conformer = 18 / (1+18) × 100%

axial conformer = 18/19 × 100%

axial conformer = 94.7%

The value of percentage has been rounded off to the nearest whole number, which is 95. Therefore, the answer is (A) 95.

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Role does lactase play in breaking apart the disaccharide lactose is lactase prevents too many disaccharide molecules from clumping together during chemical reactions

Lactose is a disaccharide consisting of 2 monosaccharides, glucose and galactose, linked together via a β-1→4 bond and hydrolysis of this bond requires a specific enzyme called lactase which digests lactose to its components allowing the uptake of glucose and galactose from the intestine

When we eat something containing lactose, an enzyme in the small intestine called lactase breaks it down into simpler sugar forms called glucose and galactose and this glucose and galactose are disaccharide and these simple sugars are then absorbed into the bloodstream and turned into energy

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Coefficients and other factors that are used to calculate quantities in a chemical reaction are known as stoichiometric coefficients. These coefficients represent the ratios of the number of molecules or moles of reactants and products in a balanced chemical equation. They help determine the amounts of substances involved in a reaction.

Stoichiometric coefficients are numerical values that are placed in front of the chemical formulas in a balanced chemical equation. They indicate the relative amounts of reactants and products in the reaction. These coefficients are used to calculate the quantities of substances involved in the reaction.

To calculate the quantities, you can follow these steps:

1. Write the balanced chemical equation for the reaction.
2. Identify the stoichiometric coefficients of the reactants and products.
3. Determine the given quantity or the quantity you want to calculate.
4. Use the stoichiometric coefficients to set up a mole ratio between the given quantity and the quantity you want to calculate.
5. Use the mole ratio to convert the given quantity to the desired quantity using mole-to-mole conversions.
6. If necessary, convert the desired quantity to a different unit using appropriate conversion factors.

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the volume of 1.075 M copper(ii) nitrate that must be diluted with water to prepare 122.9 mL of a 0.9995 M solution is approximately 9.95 mL.

To calculate the volume of copper(ii) nitrate, we first need to use the formula:

Molarity (M) = moles of solute (mol) / volume of solution (L)

We know the molarity (0.9995 M) and the volume of the final solution (122.9 mL or 0.1229 L). We can rearrange the formula to solve for the moles of solute:

mol = M x L
mol = 0.9995 M x 0.1229 L
mol = 0.1228 mol

Now we need to use the molar mass of copper(ii) nitrate (187.56 g/mol) to calculate the mass of the solute:

mass = mol x molar mass
mass = 0.1228 mol x 187.56 g/mol
mass = 23.06 g

Finally, we can use the density of copper(ii) nitrate (2.32 g/mL) to convert the mass to volume:

volume = mass / density
volume = 23.06 g / 2.32 g/mL
volume = 9.95 mL

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We need to dilute 114.4 mL of the 1.075 M copper(II) nitrate solution with water to prepare 122.9 mL of a 0.9995 M solution.

Dilution is the act of "simply adding more solvent to the solution, such as water, to lower the concentration of a solute in a solution." In order to dilute a solution, more solvent must be added without increasing solute.

We can use the formula for dilution to solve this problem:

M₁V₁ = M₂V₂

where M₁ is the initial concentration of the copper(II) nitrate solution, V₁ is the volume of the solution that we need to dilute, M₂ is the final concentration of the diluted solution, and V₂ is the final volume of the diluted solution.

We are given that:

M₁ = 1.075 M (the initial concentration of the copper(II) nitrate solution)

M₂ = 0.9995 M (the final concentration of the diluted solution)

V₂ = 122.9 mL (the final volume of the diluted solution)

We can solve for V₁ by rearranging the formula:

V₁ = (M₂ × V₂) / M₁

Substituting the given values:

V₁ = (0.9995 M × 122.9 mL) / 1.075 M

V₁ = 114.4 mL

Therefore, we need to dilute 114.4 mL of the 1.075 M copper(II) nitrate solution with water to prepare 122.9 mL of a 0.9995 M solution.

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The correct order of the steps is: carbonyl oxygen is protonated, alcohol adds to the carbonyl to form a tetrahedral intermediate, hydroxy oxygen is protonated, and alcohol displaces the hydroxy group in an SN2 reaction.

The first step in the mechanism to convert a carboxylic acid to an ester is the protonation of the carbonyl oxygen. This protonation makes the carbonyl carbon more electrophilic, allowing it to react with the alcohol in the next step. The alcohol then adds to the carbonyl to form a tetrahedral intermediate. The hydroxy oxygen is then protonated, which facilitates the leaving of the hydroxy group and the formation of the ester in an SN2 reaction.

Tetrahydrofuran (THF) and hydrogen sulphide (HSCH3) react in the specified reaction using an SN2 mechanism. SN is a particular kind of nucleophilic substitution reaction in which the nucleophile contacts the substrate directly, which causes the leaving group to be displaced in a bimolecular manner. As the nucleophile in the described reaction, hydrogen sulphide attacks the THF's carbon center. Through a coordinated process, this assault causes the leaving group—an alkyl group linked to the THF—to be displaced.

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The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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Answer:

option d

Explanation:

isotope means atoms with different mass no. 17 and 18 written on the left represent mass number

this is because atoms can differ in mass no.

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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Answer:

19.05 g have been oxidized

Explanation:

This is the unballanced equation:

H₂SO₄ + Cu → CuSO₄ + SO₂ + H₂O

Let's balance as a redox one:

Cu° oxidizes to Cu²⁺

Cu → Cu²⁺ + 2e⁻

SO₄⁻² reduces to SO₂

We add 2 water in the left side in order to ballance the O, so we add 4 protons to the right side, to ballance the H.

SO₄⁻² + 4H⁺ + 2e⁻ → SO₂ + 2H₂O

In the 2 half reactions, we have the same electrons, we sum both equations, so we have the main equation ballanced (we cancel the e⁻):

2H₂SO₄ + Cu → CuSO₄ + SO₂ + 2H₂O

We determine the moles of sulfuric acid:

M = moles /L → 0.5 mol/L . 1.2L = 0.6 moles

As ratio is 2:1, we propose

2 moles of sulfuric react to 1 mol of Cu

0.6 moles of sulfuric will react to (0.6 . 1) /2 = 0.3 moles of Cu

We determine the mass: 0.3 mol . 63.5 g/mol = 19.05 g

The complete question is as follows: Barium chloride (BaCl2) emits a green color when flame tested. What can be said about the wavelength of light it emits? Select all that apply.

A) The thermal energy is transferred to the outer electrons of the barium ions.

B) The electrons gain enough energy to excite them to a higher energy level.

C) The electrons drop back down to their ground state, gaining energy.

D) The electrons release energy emitting a wavelength of 500-560 nm, corresponding to a green light, when going back to their ground state.

Answer: The following can be said about the wavelength of light that Barium chloride emits:

Explanation:

As barium chloride is emitting green color when flame tested. This means that thermal energy is being transferred to the outer electrons of barium ions.

A visible light is emitted by a substance when its electrons move from a region of higher energy level to lower energy level. This is because energy is given off by the electrons when they move in a lower region.

This is only possible when the electrons gain enough energy to excite them to a higher energy level.

Also, the electrons release energy emitting a wavelength of 500-560 nm, corresponding to a green light, when going back to their ground state.

Thus, we can conclude that following can be said about the wavelength of light that Barium chloride emits:

EDTA (ethylenediaminetetraacetic acid) is commonly used to determine the hardness of water due to its ability to form complexes with metal ions, particularly calcium and magnesium ions.

Water hardness refers to the concentration of calcium and magnesium ions present in water. These ions can cause scaling, reduce the effectiveness of soaps, and have other negative effects. EDTA acts as a chelating agent, meaning it can bind to metal ions and form stable complexes.

In the process of determining water hardness, a known amount of EDTA solution is added to a water sample. The EDTA molecules form complexes with the calcium and magnesium ions present in the water.

The endpoint of the titration is reached when all the metal ions are complexed by the EDTA, resulting in a color change or an indicator reaching a specific endpoint.

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Answer:

I don't know about the rest but A is heptane

Answer:

speed = distance/time

100 yards =91.5 metres

=91.5/12=7.625m/s

Answer:

17.05 MPH or 7.62 MPS

Explanation: I am not sure what one you are wanting, either in miles per hour or meters per second