find [oh−][oh−] in 6 m . naoh.6 m aq. naoh. [oh−]=

Answer:

Because of the Strong force

The most frequent form of buffer overflow attack, called a stack overflow, involves a buffer overflow in the top of the stack. This kind of attack targets information on the heap, an open memory pool.

When a hacker takes advantage of the code mistake to carry out a malicious action and breach the affected system, it is called a buffer overflow attack. The hacker changes the app's execution path and overwrites some of its memory.

When more data is loaded into a fixed-length memory than the reader can hold, it overflows or overruns. which, by overflowing into neighboring memory space, corrupts or overwrites the data stored in that region, which must go someplace.

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Answer:d

Explanation:

Answer:

The given equation shows the decomposition of hydrated sodium sulfate to form anhydrous sodium sulfate:

$Na_2SO_{4 \cdot x} \rightarrow Na_2SO_4 + xH_2O$

From the given data, we know that 10.10 g of hydrated sodium sulfate decomposes to form 4.40 g of anhydrous sodium sulfate. Let's first calculate the number of moles of anhydrous sodium sulfate formed:

$Moles\ of\ Na_2SO_4\ =\ \frac{4.40\ g}{142.04\ g/mol} = 0.0310\ mol$

Since one mole of hydrated sodium sulfate produces one mole of anhydrous sodium sulfate, the number of moles of hydrated sodium sulfate present in 10.10 g can be calculated as:

$Moles\ of\ Na_2SO_{4 \cdot x}\ =\ 0.0310\ mol$

The formula mass of the hydrated sodium sulfate can be calculated by adding the molar masses of all its constituent atoms:

$Formula\ mass\ of\ Na_2SO_{4 \cdot x}\ =\ 2\times23.00\ g/mol\ +\ 32.06\ g/mol\ +\ x\times18.02\ g/mol = 142.04\ g/mol$

Solving for x, we get:

$x = \frac{142.04\ g/mol - 46.00\ g/mol - 32.06\ g/mol}{18.02\ g/mol} = 4$

Therefore, the formula of the hydrated sodium sulfate is $Na_2SO_{4 \cdot 4H_2O}$ and its formula mass is 322.20 g/mol.

Note that the three types of plate boundaries are:

The geological features that can occur in each type of boundary are given as follows:

1) Divergent plate boundaries occur when plates move apart and magma rises to the surface to form new crust. A geologic feature that occurs at a divergent plate boundary is a mid-ocean ridge.

2) Note that convergent plate boundaries occur when plates collide and one plate is forced beneath the other, into the mantle. A subduction zone is a geologic feature at a convergent plate boundary.

3) In the case of transform plate boundaries, it occurs when plates slide past each other along a transform fault. A geologic feature that occurs at a transform plate boundary is a strike-slip fault.

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After 45 minutes, the temperature of the sand sample was -1°C, the temperature of the 50-gram cold water sample was 0°C, and the temperature of the 100-gram cold water sample was 0°C.

What is temperature?

The experiment is testing the ability of different substances to retain or lose heat in a cold environment. By placing the sand and water samples in an ice water bath and checking their temperatures every 15 minutes, the experiment shows how long it takes for each substance to reach thermal equilibrium with the cold environment. The final temperatures of the samples after 45 minutes show that the sand reached a lower temperature than the water samples, indicating that it lost heat more quickly. This is because sand has a lower heat capacity than water, meaning it takes less energy to change its temperature. The two water samples reached the same temperature, demonstrating that the amount of water in a sample does not affect its ability to retain heat in a cold environment.

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Answer:

Pros: Cheap, Reliable, and Abundant.

Cons: Pollution, Waste, and harmful substances

Explanation:

Pros

Cheap: it's cheaper then using other energy sources and is a lot less expensive to extract

Reliable: Coal can supply power during peak demand which means avoiding blackouts.

Abundant: there are approximately over 300 years of coal deposits still available.

Cons

Pollution: the byproducts from coal can cause a lot of pollution and can contribute to global warming

Waste: a lot of waste which can no longer be reused is generated from coal fired plants.

Harmful Substances: Coal fired plants emit harmful substances to the environment including Sulfur, Mercury, Dioxide, Arsenic and Etc.

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One round of the Krebs cycle produces (B) NADH (C) FADH₂ (D) CO₂. Hence, the correct options are B,C and D.

NADH and FADH2 are electron carriers that will go on to produce ATP in the electron transport chain. CO2 is a waste product that is released into the atmosphere. ATP is not directly produced by the Krebs cycle, but rather by the electron transport chain, which uses the NADH and FADH2 produced by the Krebs cycle to generate ATP. The Krebs cycle, also known as the citric acid cycle or the tricarboxylic acid cycle, is a series of biochemical reactions that occur in the mitochondria of eukaryotic cells, as well as in the cytoplasm of prokaryotic cells. The purpose of the Krebs cycle is to generate energy in the form of ATP, as well as to produce electron carriers such as NADH and FADH2 that will go on to generate more ATP in the electron transport chain. In the Krebs cycle, acetyl-CoA, a two-carbon molecule derived from the breakdown of carbohydrates, lipids, and proteins, enters the cycle and is combined with a four-carbon molecule called oxaloacetate to form citrate, a six-carbon molecule. Citrate is then converted through a series of reactions into isocitrate, which is then converted into alpha-ketoglutarate. During these reactions, CO2 is released as a waste product. Alpha-ketoglutarate is then converted into succinyl-CoA, which releases another molecule of CO2. This reaction produces a molecule of ATP as well as a molecule of the electron carrier NADH. Succinyl-CoA is then converted into succinate, which is further converted into fumarate, releasing another molecule of FADH2. Fumarate is then converted into malate, which is then converted back into oxaloacetate, which can combine with another molecule of acetyl-CoA to continue the cycle.

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Explanation:

CH4 + 4S ---> CS2 + 2H2S

4) 0.75 mol S × (1 mol CS2/4 mol S) = 0.19 mol CS2

5) 3 mol H2S × (1 mol CH4/2 mol H2S) = 1.5 mol CH4

Fe2O3 + 2Al ---> 2Fe + Al2O3

6) 25 g FeO3 × (1 mol Fe2O3/159.69 g Fe2O3) = 0.16 mol Fe2O3

0.16 mol Fe2O3 × (2 mol Al/1 mol Fe2O3) = 0.32 mol Al

0.32 mol Al × (26.98 g Al/1 mol Al) = 8.6 g Al

7) Given:

45 g Al × (1 mol Al/26.98 g Al) = 1.6 mol Al

85 g Fe2O3 ×(1 mol Fe2O3/159.69 g Fe2O3)

= 0.53 mol Fe2O3

Let's look at how much Fe each reactant will produce:

1.6 mol Al × (2 mol Fe/2 mol Al) = 1.6 mol Fe

0.53 mol Fe2O3 × (2 mol Fe/1 mol Fe2O3) = 1.1 mol Fe

Note that the given amount of Fe2O3 will give us fewer Fe. Therefore, Fe2O3 is the limiting reactant.

8) Al will produce 1.6 mol Fe × (55.845 g Fe/1 mol Fe)

= 89 g Fe

Fe2O3 will produce 1.1 mol Fe × (55.845 Fr/1 mol Fe)

= 61 g Fe

9) Since Fe2O3 is the limiting reactant, the ideal yield of Fe for the reaction is 61 g. If the actual reaction only gave us 25 g Fe. then the percent yield of Fe is

%yield = (25 g Fe/61 g Fe) × 100% = 41%

10) If we only got 25 g Fe, then the amount of Al actually used in the reaction is

25 g Fe × (1 mol Fe/55.845 g Fe) = 0.45 mol Fe

0.45 mol Fe × (2 mol Al/2 mol Fe) = 0.45 mol Al

0.45 mol Al × (26.98 g Al/1 mol Al) = 12 g

Therefore, the leftover amount of Al is

25 g Al - 12 g Al = 13 g Al

Answer:

The empirical formula simply states the ratios of the elements that make up the molecule, while molecular formulas specify the amounts of each element exactly, not just giving the ratio. Let's take ethane (C2H6) as an example.

The diffusion of carbon in iron occurs through an interstitial mechanism which happens in bcc iron from one tetrahedral site to another.

The carbon atoms diffuse through the iron lattice and are located in the interstitial sites within the lattice.

This interstitial mechanism is observed to happen in the Body centered cubic (BCC) structure of iron, and the carbon atoms fill the tetrahedral voids of the bcc iron lattice.

Interstitial diffusion of carbon in BCC iron involves the movement of a carbon atom from one tetrahedral site to another.  

The interstitial diffusion of carbon in iron is responsible for the hardening of steel via heat treatment, which makes the steel stronger and more durable.

This property is used in the manufacturing of steel tools and machinery components that are expected to endure high stress.

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About  739,982.4 Joules energy is required to raise the temperature of 100.0 grams of water from -269 degrees Celsius to 1500 degrees Celsius.

The formula for the change in heat is,

Q = mcΔT, the amount of energy required is Q, m is the mass of water, specific heat capacity of water is c, the change in temperature is ΔT,

ΔT = 1500°C - (-269°C)

ΔT = 1769°C

Next, we can look up the specific heat capacity of water, which is 4.184 J/g°C. Then, we can substitute the values into the formula,

Q = 100.0 g * 4.184 J/g°C * 1769°C

Q = 739,982.4 J

Therefore, it would require 739,982.4 Joules of energy to raise the temperature of 100.0 grams of water from -269 degrees Celsius to 1500 degrees Celsius.

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Answer:

8txirzrz8rzrirzriz£=,£=,,-8/-9/-¥/

Explanation:

otcitxfi

Answer:

D. Asthenosphere

Explanation:

The theory of plate tectonics states that the lithosphere which is the solid outer crust of the earth contains segmented plates that shift to the asthenosphere. The asthenosphere is the upper part of the mantle that is molten in form.

So, the ability of the plates to move over to the asthenosphere, is an important feature of the plates. There are different points in the earth where the plates merge and separate.

Answer: a. seafloor

Explanation:

The refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

To calculate the kilowatt-hours (kWh) of electric energy used by the refrigerator in 30 days, we need to multiply the power rating by the total running time.

Given:

Power rating of the refrigerator = 500 W

Running time per day = 12 hours

Number of days = 30

First, we need to convert the power rating from watts to kilowatts:

Power rating = 500 W / 1000 = 0.5 kW

Next, we calculate the total energy used in kilowatt-hours (kWh) over the 30-day period:

Energy used = Power rating × Running time × Number of days

Energy used = 0.5 kW × 12 hours/day × 30 days

Energy used = 180 kWh

Therefore, the refrigerator would use 180 kilowatt-hours (kWh) of electric energy over the course of 30 days, assuming it runs for 12 hours each day.

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Answer: Group 18, non-reactive noble gas

Explanation:

This electron configuration denotes the elements Argon. It is at the end of the 3p subshell and we can tell this because it says 6 for the value in 3p. This element is in group 18 and something important about that group is that they are typically non-reactive gases, because they have a full electron shell.

Group 18

non-reactive noble gas

The partial pressure of H₂ 0.69 atm is  and N₂ is 0.38 atm  the total pressure of the gas is 1.07 atm.

given that :

mass of H₂ = 0.174 g

moles of H₂ = mass / molar mass

                    = 0.174 / 2

                    = 0.087 mol

moles of  N₂  = mass / molar mass

                      = 1.365 / 28

                      = 0.048 mol

the ideal gas formula is given as :

P V = n R T

Partial pressure of H₂ = n R T / V

                                    = ( 0.087 × 0.0823 × 273) / 2.83

                                    = 0.69 atm

Partial pressure of  N₂ = n R T / V

                                      = ( 0.048 × 0.0823 × 273 ) / 2.83

                                      = 0.38 atm

The total pressure  gas = partial pressure of H₂ + partial pressure of N₂

                                       = 0.69 + 0.38

                                       = 1.07 atm

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Answer:

C

Explanation:

Fresh water fish need freshwater.

Answer:

Ethane & propane are members of same homologous series : alkane which is indicated with Cn H2n+2

Explanation:

In the model, the base-pairing properties for 'H' and 'X' must adhere to the standard DNA base-pairing rules. These rules state that 'H' must pair with 'X' in a complementary manner, forming a stable hydrogen bond.

Specifically, 'H' must pair with 'X' using adenine (A) and thymine (T) base pairing, where 'H' represents adenine and 'X' represents thymine. This complementary base pairing ensures the stability and accuracy of DNA replication and transcription processes within the model. The base-pairing properties for 'H' and 'X' in the model must follow the established rules of DNA base pairing. DNA consists of four nucleotide bases: adenine (A), thymine (T), cytosine (C), and guanine (G). These bases have specific pairing relationships, where 'A' pairs with 'T' and 'C' pairs with 'G'. This pairing occurs through hydrogen bonds, which provide stability to the DNA structure. In the model, 'H' represents adenine (A), and 'X' represents thymine (T). Therefore, the base-pairing between 'H' and 'X' must adhere to the A-T pairing rule. Adenine (H) forms two hydrogen bonds with thymine (X), establishing a stable base pair. This pairing ensures that the model's DNA sequences maintain the fundamental characteristics of DNA and allows for accurate replication and transcription processes. By following the standard base-pairing rules, the model can simulate DNA interactions, including replication, transcription, and other molecular processes. These properties are essential for accurately representing biological systems and understanding genetic information within the context of the model's simulations or analyses.

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Hydrogen molecule is a molecule that releases the most energy when forming its bonds as compared to other molecules.

We know that H-H bond energy is 432 kJ mol-1, CI - CI bond energy is 239kJ mol-1 and Br-Br bond energy is 193 kJ mol-1 so from this data we can conclude that more energy is required to break the bond between hydrogen atom.

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As the fuel burns, chemical reactions occur within the fuel, breaking up molecules, forming new molecules, and releasing energy. The energy released allows parts of the engine to move. The chemical energy is all transformed into thermal and mechanical energy.

Mechanical energy is the sum of potential energy and kinetic energy that an object has due to its motion and position. It is the energy associated with the motion and position of an object.

For example, when a person lifts a weight and holds it above the ground, the person has done work and has increased the object's potential energy. This potential energy is converted to kinetic energy when the person releases the weight and it falls. The kinetic energy of the falling weight is converted to other forms of energy, such as sound and heat, when it strikes the ground.

On the other hand, when a car is accelerating, it is converting its chemical energy (from the gasoline) into mechanical energy. This mechanical energy is then used to move the car forward. The mechanical energy is then converted to other forms of energy, such as heat and sound, when the car brakes.

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Bromobenzene is converted to a compound with the molecular formula c7h7br in the following reaction scheme.

Bromobenzene is an organic compound with the chemical formula C6H5Br. It is a colorless liquid with a sweet, pungent odor. It is used in the production of dyes, pharmaceuticals, and other organic compounds.

Bromobenzene + NaNH2 --> 1-Phenyl-2-bromoethanamine + NaBr

Reagents: Bromobenzene, NaNH2

Products: 1-Phenyl-2-bromoethanamine, NaBr

1-Phenyl-2-bromoethanamine + KOH --> 1-Phenyl-2-hydroxyethanamine + HBr

Reagents: 1-Phenyl-2-bromoethanamine, KOH

Products: 1-Phenyl-2-hydroxyethanamine, HBr

1-Phenyl-2-hydroxyethanamine + HBr --> 2-Bromo-1-phenylethanone + NaBr

Reagents: 1-Phenyl-2-hydroxyethanamine, HBr

Products: 2-Bromo-1-phenylethanone, NaBr

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Answer:

Yes is incorrect

Explanation:

not all veins carry blood rich in CO2 , the pulmonary vein carries blood with O2 which means that not all veins carry blood rich in CO2

Answer:

i speak englae

Explanation:

Answer:

f) 10-etil-2,3,4,11-tetrametilo-7-propilododecano

Explanation:

Decreasing the volume of the chamber by dragging the left side inward will increase the pressure of the container.

Pressure is the amount of force applied perpendicular to the surface of an object per unit area. The symbol for it is "p" or P.

If the volume of a container is decreased, the gas molecules have less space in which to move around. As a result, they will strike the walls of the container more often, and the pressure increases.

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Answer:

C

Explanation:

The weeds will be replaced by woody shrubs and some small trees.

If the forest land is cleared, it is hard to construct a forest again. The cleared land will grow as grass land then if there is no constructions or buildings fills the land. Hence, option B is correct.

Forestation is the process of formation of forests and dense growth of trees and other kinds of plants. Forests are example of ecosystems and  wide variety of plant species and animals are living there.

Nowadays, deforestation is common for the selfish purposes of man to buildups their own amenities so that, many more plants and animals are on the edge of extinction.

There are naturally made forests as well as man made forests.  It was results of hard working that to form a forest with all its atmosphere and biodiversity will take longer time. It will not happen within just five years.

Thus,  if the forest land is cleared, the empty ground may fill with grasses and flower plants. Hence option B is correct.

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Answer:

1. Greenhouse gas.

2. Carbon sequestration.

3. Greenhouse effect.

Explanation:

Greenhouse gases can be defined as gases that trap heat within the Earth's atmosphere. Thus, an increase in global temperature is largely caused due to an increase in the amount of greenhouse gases in Earth's atmosphere.

Some examples of greenhouse gases present in the atmosphere are methane, water vapor, carbon dioxide etc.

Matching the descriptions with their term respectively, we have;

1. Greenhouse gas: carbon dioxide, water vapor, methane, nitrogen oxides, and some CFCs that absorb heat and keep it in the earth's atmosphere

2. Carbon sequestration: it's a technology used to capture the carbon released from smokestacks and store it in some part of the environment to keep it out of the atmosphere. Thus, it's a process that is typically used for capturing and the long-term storage of atmospheric carbon dioxide in soil, ocean, plants and geologic formation, so as to reduce global warming or climate change.

3. Greenhouse effect: it's a term used to describe the negative role that greenhouse gases such as methane, water vapor, carbon dioxide etc., play in keeping the earth warm.

Answer:

True

Its true because on the passage it talks about wolves killing cows