Which does not describe a function of the dna polymerase molecule?.

a) The explosiveness of hydrogen gas is a chemical property.

b) The bronze color of copper is a physical property.

c) The shiny appearance of silver is a physical property.

d) The ability of dry ice to sublime (change from solid directly to vapor) is a physical property.

Chemical properties are properties that describe the behavior of a substance during a chemical reaction or a chemical change. Explosiveness of hydrogen gas is an example of a chemical property because it describes how hydrogen gas reacts with oxygen to form water and how the reaction releases a large amount of energy in the form of an explosion.

Physical properties, on the other hand, are properties that describe the characteristics of a substance that can be observed or measured without changing the composition of the substance. Examples of physical properties include the color, texture, and melting point of a substance. The bronze color of copper and the shiny appearance of silver are both examples of physical properties.

The ability of dry ice to sublime (change from solid directly to vapor) is also a physical property because it describes a physical change that occurs when dry ice is heated or exposed to high pressure.

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Answer:

The right option is the 4 one. nucleoid

Prokaryotic cells are simple cells that lack a definite nucleus and some membrane-bound organelles. Prokaryotic cells have a nucleoid region, which is an irregularly-shaped central region of the cell that contains the cell’s genetic information (DNA). Other organelles that can be found in prokaryotic cells include plasma membrane, cell wall, cytoplasm, and ribosomes.

Explanation:

Answer:

nucleoid

Explanation:

The time taken for the isotope of the sample element having a half life of 27.7 days to decay from its 600 g sample to 75 g is 36.09 days.

Radioactive decay is a nuclear reaction by which an unstable nuclei will undergo emission of charged particles such as alpha, beta, gamma.

By this process unstable nuclei will form their stable isotope or other new atoms. The decay constant k for the nuclear reaction is calculated from the half life time as below:

decay constant = 0.693 /27.7 days

                          = 0.025 days-1

Now the time taken for the decay of 600 g of the sample to 75 g is calculate as follows:

t = 1/(0.025) log (600/75)

  = 36.09 days

Hence,  time taken for the isotope of the sample element having a half life of 27.7 days to decay from its 600 g sample to 75 g is 36.09 days.

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The pair that has both reduced forms of electron carriers is NADH/FADH2. NADH is a reduced form of nicotinamide adenine dinucleotide (NAD+), which becomes reduced when it gains a pair of electrons and a hydrogen ion.

FADH2 is a reduced form of flavin adenine dinucleotide (FAD), which also becomes reduced when it gains a pair of electrons and two hydrogen ions. These reduced forms of electron carriers play important roles in cellular respiration, particularly in the electron transport chain. NADH and FADH2 donate their electrons to the electron transport chain, which then uses them to generate ATP through oxidative phosphorylation.

Overall, the reduction of NAD+ and FAD to their respective reduced forms, NADH and FADH2, is essential for energy production in cells.

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Answer:19

Explanation:

To create a solution with an anion concentration equal to 0.898 M, you would need to add 58.32 grams of magnesium chloride to 766 mL of water.

To calculate the grams of magnesium chloride needed, we first need to determine the molar mass of magnesium chloride, which is 95.21 g/mol. We then convert the volume of water to liters by dividing 766 mL by 1000, giving us 0.766 L. Next, we use the formula for molarity, which is Molarity (M) = moles of solute / volume of solution in liters. Rearranging the formula, we find that moles of solute = Molarity × volume of solution in liters. Plugging in the values, we get moles of solute = 0.898 M × 0.766 L = 0.688668 mol.

Finally, we multiply the moles of solute by the molar mass to get the grams of magnesium chloride needed: 0.688668 mol × 95.21 g/mol ≈ 58.32 grams. Therefore, approximately 58.32 grams of magnesium chloride must be added to the water to create the desired solution.

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The correct option is (d). The correct statement is "The mixture of solvents should allow the substance to crystallize out when cooled." This is because crystallization is a separation technique that is primarily utilized to purify solid organic compounds that are contaminated.

The correct statement is "The mixture of solvents should allow the substance to crystallize out when cooled."This is because crystallization is a separation technique that is primarily utilized to purify solid organic compounds that are contaminated. In order to achieve effective crystallization, the solvents selected must have suitable characteristics. When the solvent is heated, it dissolves the impure compound. The mixture is then cooled until it solidifies in the form of crystals. If the substance is very soluble in solvent 1 but has low solubility in solvent 2, then solvent 1 will be the ideal solvent for dissolving the impure sample so that it can be separated from the mixture as a pure substance. If the two solvents chosen are both organic, they are more likely to dissolve the impure sample than an inorganic solvent would. However, the substance to be purified should be very soluble in the solvent in both solvents and the two solvents chosen should not be miscible. Therefore, the mixture of solvents should allow the substance to crystallize out when cooled.

Crystallization is a separation technique that is primarily utilized to purify solid organic compounds that are contaminated. In order to achieve effective crystallization, the solvents selected must have suitable characteristics. When the solvent is heated, it dissolves the impure compound. The mixture is then cooled until it solidifies in the form of crystals. If the substance is very soluble in solvent 1 but has low solubility in solvent 2, then solvent 1 will be the ideal solvent for dissolving the impure sample so that it can be separated from the mixture as a pure substance. If the two solvents chosen are both organic, they are more likely to dissolve the impure sample than an inorganic solvent would. However, the substance to be purified should be very soluble in the solvent in both solvents and the two solvents chosen should not be miscible. Therefore, the mixture of solvents should allow the substance to crystallize out when cooled.

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Answer:

Na2O

explanation.

Ionic bonds refers to complete transfer of electrons from one atom to another

The molecular formula of a compound is a whole number multiple of its empirical formula. The empirical formula of the hydrocarbon is C₄H₉.

The empirical formula of a compound can be defined as the formula which gives the simplest whole number ratio of atoms of various elements present in one molecule of the compound.

Here moles of 'C' = moles 'CO₂' = 6.16 / 44 = 0.14 moles

Moles of 'H' = 2 × moles 'H₂O' = 2 × 2.84/18.02 = 0.315 moles

Divide both number of moles by 0.14. Then we get

1 mol 'C' and 2.25 mol 'H'

Multiply both with 4 to obtain a whole number.

Then the number of carbon is 4 and that of hydrogen is 9.

Thus the empirical formula is C₄H₉.

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In the bicarbonate buffering system, carbon dioxide and water join to form carbonic acid, which dissociates into hydrogen and bicarbonate.

A buffer solution resists the changes in acidity by combining with the hydrogen ions that were added and inactivates them. It is a solution of weak acid and its conjugate base, (carbonic acid and bicarbonate). The natural conversion of carbon dioxide into carbonic acid is slow.

Bicarbonate buffer absorbs hydrogen ions and forms carbonic acid. The total number of hydrogen ions and hence the pH of the solution does not change. Bicarbonate is consumed and carbonic acid is produced when hydrogen ions are added.

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Explanation:

The molecules of solids are shrinked in there normal state . but as a heat energy is produced , the molecules starts curating fast and fast as temperature goes up . since they vibrate , they hit and collide each other breaking the bondings this increases the surface of area of the solid , and molecules consumes that space and they expand .

When propane undergoes complete combustion, it reacts with oxygen gas to produce carbon dioxide and water vapor.

The chemical equation for this process is:

C₃H₈ + 5O₂ → 4H₂O + 3CO₂

In the above equation, one mole of propane (C₃H₈) reacts with five moles of oxygen gas (O₂) to produce three moles of carbon dioxide (CO₂) and four moles of water vapor (H₂O).

One mole of propane has a molar mass of 44.1 g/mol and 6.80 kg of propane is present in the tank.

Therefore, the number of moles of propane is:

6.80 kg × (1000 g/kg) / 44.1 g/mol = 154.2 mol

By looking at the above chemical equation, three moles of carbon dioxide are produced for every mole of propane reacted. Thus, the number of moles of carbon dioxide produced is:

3 mol CO₂/mol C₃H₈ × 154.2 mol C₃H₈ = 462.6 mol CO₂

The molar mass of carbon dioxide is 44.0 g/mol.

Therefore, the mass of carbon dioxide produced is:

462.6 mol × 44.0 g/mol = 20,358.4 g or 20.36 kg.

The mass of carbon dioxide, in kg, produced by the complete combustion of all the propane in such a tank is 20.36 kg.

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Answer:

lost is the answer to this question but if I am wrong I am so sorry for that

Answer:

A. sunlight

Explanation:

The source of nearly all of the energy for producers and consumers is sunlight

To make 1 liter of a 10% NaCl solution from a solid stock, you will require the following materials and containers.MaterialsSolid NaClDistilled water1-Liter volumetric flask250-mL volumetric flask 2-beakersProcedureTo prepare 1 liter of a 10% NaCl solution, the following procedure should be followed:Measure out 100g of NaCl using a balance.

Measure the weight of an empty 250-mL volumetric flask.Add the NaCl to a 250-mL beaker and add a small amount of distilled water to it to dissolve the NaCl.Carefully pour the dissolved NaCl solution into the 250-mL volumetric flask. Add distilled water to the mark on the flask to make up the volume. Stopper the flask and invert it several times to mix the solution.Measure the weight of the 1-Liter volumetric flask.Add the 250-mL volumetric flask solution to a 1-Liter volumetric flask.Add distilled water to the mark on the flask to make up the volume.

Stopper the flask and invert it several times to mix the solution.The final volume of the solution will be 1 liter of a 10% NaCl solution.PrecautionsEnsure the NaCl has completely dissolved before adding more water to avoid making a less concentrated solution.Measure the weight of the volumetric flask before and after adding the solution to calculate the volume of solution that was added.Use distilled water to prepare the solution.

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Answer:

Chlorophyll.

Explanation:

Chlorophyll is also why plants are green.

Pls mark brainliest with the crown

Chloroplasts are the food producers of the cell. The organelles are only found in plant cells and some protists such as algae. Animal cells do not have chloroplasts. Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells.

:)

Answer:

When the gaseous phase of water reaches a metal lid it condenses to form water.

Explanation:

The gaseous phase of water is at a higher temperature than the temperature of a metal lid. Thus when it comes in contact with the cold lid it loses heat and gets converted to the liquid phase.

When water vapor loses temperature, it undergoes a process called condensation, which results in its conversion to a liquid state. This process is essentially the opposite of vaporization. Typically, condensation occurs when a vapor is compressed or cooled to its saturation limit, causing the molecular density within the gas phase to reach its maximum threshold.

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When salt is dissolved in water, B. the positively charged sodium cation is surrounded by the negative side of encircling water molecules.

This is because water is a polar molecule, meaning it has both a positive and negative side. The oxygen atom in water has a partial negative charge, while the hydrogen atoms have a partial positive charge. When salt (NaCl) is added to water, the positive sodium cation (Na+) is attracted to the negative oxygen side of water molecules, forming a hydration shell around the ion.

The negative chloride ion (Cl-) is attracted to the positive hydrogen side of water molecules, forming its own hydration shell. This process is called hydration, and it helps to stabilize the ions in solution and prevent them from re-forming into salt crystals. The surrounding water molecules form hydrogen bonds with each other and with the hydrated ions, resulting in a homogeneous solution of saltwater. So therefore the correct answer is B. the positively charged sodium cation is surrounded by the negative side of encircling water molecules, when salt is dissolved in water.

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Answer: D sand and water

Explanation:

Since water is less dense than sand it could be easily separated if you go to the ocean that’s why the water is at the bottom of the sand but on above the sand so it will be able to separate easily.

Answer:

Answer: D sand and water

Explanation:

Answer:

Explanation:

Overuse of antibiotics leads to bacteria's resistance against our drugs. This is increasing at an alarming rate and the reason is that overuse of antibiotics kills bacteria that lack the "resistance" gene or gene that can help them survive the antibiotics (similar is the case for insects that die to insecticides). But, some bacteria can have random mutations in their gene that can help them survive the antibiotic (similar is the case for some insects that can survive the insecticide), thus the surviving bacteria give rise to next generation of bacteria that are resistant to the given antibiotic (similar to how insects that survive the insecticide give birth to new insects that are resistant to insecticide too). Soon, every generation adds new antibiotic resistant bacteria (or new insecticide resistant insects in the case of insects) which is dangerous for all of life on this planet. Therefore, both are similar in the sense that new generations of these organisms will be resistant to our weapons against them.

Answer

Electromagnetic waves.

Explanation: Waves that Move through matter only are called Mechanical waves. Waves that move through space only are called electromagnetic waves.

Answer:

bnsjsbbakakaisbsbwnsjznss

Explanation:

cnsjzjsnsnsjs ssnsnsnzksmnznnzna

The stroke volume in the next few cardiac cycles will be 100 ml if the end-diastolic volume is increased from 135ml to 165m.

The formula for stroke volume is given as;

SV = EDV - ESV

Here SV represents stroke volume, EDV represents end-diastolic volume and ESV represents end-systolic volume.

First, we calculate this person's end-systolic volume as follows;

If the person’s stroke volume was 70ml and his initial diastolic volume was 135 ml, then:

70 = 135 - ESV

70 - 135 = -ESV

-65 = -ESV

ESV = 65ml

Now the stroke volume in the next few cycles if the end-diastolic volume increase to 165 ml can be calculated as follows;

SV = 165 - 65

SV = 100ml

Therefore, the stroke volume in the next few cardiac cycles is calculated to be 100ml.

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The complete balanced chemical reaction can be written from the half reaction in acidic solution is,

           NO3- + 4H+ + 3e ----> NO + 2H2O.

The half reaction is the part of reaction which represents either an oxidation or a reduction. There are two half-reactions. one is oxidation and other is reduction. Both are necessary to completely describe a redox reaction.

NO3- ----> NO.

This reaction is not balanced and not completed.

NO3- + 4H+ + 3e----> NO + 2H2O.

This is a balanced chemical reaction. A balanced equation contains the same number of each type of atoms on both the left and right sides of the reaction arrow. To write a balanced equation, the reactants go on the left side of the arrow, while the products go on the right side of the arrow.

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Answer:

Explanation:

A

Answer:

Shortest distance between 2 points is called displacemen.

Explanation:

This is because displacement means the distance between 2 points or really the negative distance.

Answer:

acceleration goes on increasing during uniform motio

this is wrong

Explanation:

Because during uniform motion acceleration is always zero .

Answer and Explanation:deposition has been occurring on earth for a very long time. as time goes by, more deposits form layers on the earth, including the remains of animals and plants that would later become fossils, burying the previous deposits in another layer of newer deposits. therefore it follows that layers which are found deeper are older than those found in layers near the surface....

hope it helps u..

7300 mg

7.3x10^-3 kilograms = 7300 milligrams

Overall, the actions of the entire human race can either contribute to or take away from the amount of entropy in the universe, depending on the specific activities and their impact on the environment.

The actions of the entire human race contribute to the amount of entropy in the universe in various ways. For example, human activities such as burning fossil fuels, deforestation, and industrial production all release large amounts of energy and waste products into the environment, increasing the overall entropy of the system.

The energy released during these processes is often dissipated into the environment in the form of heat, which increases the temperature and disorder of the surrounding system.

On the other hand, human actions such as recycling, conservation, and renewable energy production can help to reduce the amount of entropy in the universe. For example, recycling reduces the amount of waste and energy required to produce new materials, which in turn reduces the overall entropy of the system

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