Which organelle of a prokaryotic cell contains genetic information?


cell membrane


ribosomes


nucleus


nucleoid

Answer:

Mean: 4.92

Median: 3

Mode: 2

Explanation:

(1+1+2+2+2+3+3+4+5+11+12+13)/12=4.92

Answer:

The nucleus is responsible for storage as well as the transfer of genetic materials in the form of DNA or RNA.  It aids in the process of transcription by the synthesis of mRNA molecules and the nucleus controls the activity of all other organelles while facilitating processes like cell growth, cell division and synthesis of proteins.

Explanation:

The nucleus is a double membrane-bound structure responsible for controlling all cellular activities as well as a center for genetic materials, and it’s transferring.

Answer:

It is the nucelus

Explanation:

the nucleus is the control center of the cell

Explanation:

0.24 grams of LiOH are needed to make 100 ml of a 0.1 M solution

The volume of \(KMnO_{4}\) having molarity 0.122M is equal to 12.3ml.

we know that \(M_{1} V_{1} =M_{2} V_{2}\).

Given that, \(M_{1}\)= molarity of oxalic acid=?.

\(M_{2}\)= molarity of NaOH= 0.149M.

\(V_{1}\)= volume of oxalic acid= 15ml.

\(V_{2}\)= volume of NaOH= 25.2 ml.

Therefore, \(M_{1} = \frac{M_{2V_{2} } }{v_{1} }\)= \(\frac{0.149*25.2}{15} = 0.2503M\).

Potassium permanganate, is widely used as an oxidising agent in volumetric analysis. In acidic solution, permanganate ion undergoes a 5 electrons reduction to manganese (2) ion:-

\(8H^{+} + MnO_{4} ^{-} + 5e^{-}\)⇒\(Mn^{2+} + 4H_{2} O\).

The oxalate ion, derived from the weak oxalic acid, may undergo a 2 electrons oxidation:-

\(C_{2} O_{4} ^{2-}\)⇒\(2CO_{2} + 2e^{-}\)

The balanced net ionic equation for the reaction of permanganate ion with oxalate ion is as follows:-

\(16H^{+} + 2MnO_{4} ^{-} + 5 C_{2} O_{4} ^{-}\)⇒\(10CO_{2} +2Mn^{2+} + 8H_{2} O.\)

From the above reaction, it tells 2 moles of potassium permanganate are neutralizing 5 moles of oxalic acid.

Therefore, one mole of oxalic acid= \(\frac{5}{2}\)moles of potassium permanganate.

So, molarity of \(KMnO_{4}\)= \(\frac{5}{2} * 0.122= 0.305M.\)

Again we involve above reaction, \(M_{2} V_{2} = M_{3} V_{3}\)= \(0.2503* 15= 0.305*V_{3}\).

\(V_{3} = 12.3ml.\)

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Answer:

wavelength!!

Explanation:

because because it is a way of measuring the size of waves. it is the distance between two corresponding points on adjacent waves. the wavelength of a transverse wave can be measured in the distance between two adjacent crests. HOPE THIS HELPS!

In the electromagnetic spectrum , wavelength is the term which is used to describe the distance between corresponding points on two adjacent waves.

The electromagnetic spectrum consists of electromagnetic  radiation consisting  of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.There are 7 types of electromagnetic waves in the electromagnetic spectrum.

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Answer:

Lithium Carbonite

Explanation:

Answer:

Lithium

Explanation:

Answer:

Acidic oxides, or acid anhydride, are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetals or of metals in high oxidation states.

Explanation:

Answer:

5mol at most

Explanation:

as we hv 5mol Ca available, the 5 mol Ca can react with 5/2 = 2.5mol O2, as we have more mol of O2 than that Ca can react with, Ca is the limiting reactant. Therefore at most 5/2x2 = 5 mol of CaO can be made

Answer:

3000 Nm^2

Explanation:

We must remember that pressure is defined as force per unit area.  

We have been given the following information in the question;

Area of the tank= 1.5 m^2

Weight of water in the tank = 4500N

And;

P = F/A

F= force

A = area

P = 4500 N/1.5m^2

P= 3000 Nm^2

The increase in the concentrations of the reactants will increase the rate of the reaction. So, the correct answer is e. increasing the concentrations of the reactants.

The rate of a chemical reaction is the speed at which reactants are consumed and products are formed. The rate of a reaction can be increased by increasing the frequency of collisions between the reactant molecules, and this can be achieved by increasing the concentration of the reactants.

When the concentration of the reactants is increased, the number of reactant molecules per unit volume also increases, and this leads to an increase in the frequency of collisions between the reactant molecules. This, in turn, increases the probability that the reactant molecules will collide with enough energy to overcome the activation energy barrier and form products.

Therefore, increasing the concentrations of the reactants will increase the rate of the reaction. So, the correct answer is e. increasing the concentrations of the reactants.

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7 moles of oxygen are in the sample.

According to the chemical formula, each mole of nickel tetracarbonyl contains 4 moles of C atoms. Simply convert it into a fraction by putting the original solution in the denominator and the diluted solution in the numerator if you need to determine the concentration ratio between two solutions. The V/n ratio for each gas must be the same if the two gases are at the same temperature and pressure. The volume ratio of two gases at the same temperature and pressure is equal to their molar ratio. The mole ratio of C to O is 1 : 1

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It is true that the most common type of regenerated fiber, which is derived from cellulose and is mostly plant in origin, is rayon.

The most widely used type of regenerated fibre is rayon, which is mostly derived from plants and is manufactured from cellulose. Synthetic polymer fibres with a cellulose base are all derived from petroleum. 

Dietary fibres are produced from indigestible plant parts and frequently consist of long, repeated chains of carbohydrates. The majority of fibers come from cereal and grain husks, which contain the insoluble fibers cellulose and lignin. The bulk of plant fibers are made of cellulose, sometimes in combination with other materials like lignin.

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Answer:

Al2O3

Explanation:

Al2O3 has an ionic bond because the bonds between them are very strong

The result table indicate that A. The solute is a SOLID because it has a DECREASE in the amount dissolved as temperature decreases.

The solubility of a solid solute in a liquid solvent generally decreases as the temperature decreases. This is because the kinetic energy of the solute molecules decreases as the temperature decreases. As the kinetic energy of the solute molecules decreases, they are less likely to have enough energy to escape from the solution and enter the gas phase.

In the table, as the temperature decreases, the concentration of the solute in the solution decreases. This indicates that the solute is a solid and that the solubility of the solute decreases as the temperature decreases.

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Answer:

i've had my ups and down but i'm alright

Explanation:

no need to explain, enjoy your day

Answer:

The answer is b

Explanation:

they both are decomposition

Answer:

B and BBr3

Explanation:

1) 3HBr + B = BBr3 + H2 (double all equation because H2)

2) 6HBr + 2B = 2BBr3 + 3H2

The optimal pH for the Ni deposition process may depend on several factors, but a high pH is generally preferred for achieving a high current efficiency.

The current efficiency of a Ni deposition process at 60°C and pH 5 is likely to be affected by the pH of the electrolyte solution. If we decrease the pH to zero, it is expected that the current efficiency will decrease significantly.

This is because the acidic conditions would lead to a high concentration of hydrogen ions in the solution, which could compete with the Ni ions for electrodeposition. As a result, the deposition rate of Ni could decrease, and the current efficiency could drop.

Therefore, it may not be practical to operate the Ni deposition process at a pH of zero, as the current efficiency would be adversely affected. Instead, it is recommended to operate the process at a high pH value, where the concentration of hydrogen ions is low, and the Ni ions can be easily electrodeposited. A high pH also provides a suitable environment for the formation of a uniform and adherent Ni coating.

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To determine the empirical formula, we need to find the simplest whole number ratio between the elements present in the compound.

Given the percentages:

Aluminum (Al) = 35.98%

Sulfur (S) = 64.02%

Step 1: Convert the percentages to grams.

Assuming we have 100 grams of the compound:

Aluminum (Al) = 35.98 grams

Sulfur (S) = 64.02 grams

Step 2: Convert the grams to moles using the molar mass.

The molar mass of aluminum (Al) is 26.98 g/mol.

The molar mass of sulfur (S) is 32.06 g/mol.

Moles of Aluminum (Al) = 35.98 g / 26.98 g/mol ≈ 1.333 moles

Moles of Sulfur (S) = 64.02 g / 32.06 g/mol ≈ 1.997 moles

Step 3: Divide the moles of each element by the smallest number of moles to obtain the simplest whole number ratio.

Dividing both moles by 1.333 (the smallest number of moles), we get:

Moles of Aluminum (Al) ≈ 1 mole

Moles of Sulfur (S) ≈ 1.5 moles

Therefore, the empirical formula is AlS1.5, which can be simplified to Al2S3 by multiplying all subscripts by 2.

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Answer:

124 grams of Na2O are required to produce 160 grams of NaOH.

Explanation:

The balanced chemical equation is: Na2O + H2O -> 2NaOH

From the equation, we can see that 1 mole of Na2O produces 2 moles of NaOH.

To find the amount of Na2O required to produce 160 grams of NaOH, we need to first calculate the number of moles of NaOH:

Molar mass of NaOH = 23 + 16 + 1 = 40 g/mol

Number of moles of NaOH = mass / molar mass = 160 g / 40 g/mol = 4 moles

Since 1 mole of Na2O produces 2 moles of NaOH, we need half as many moles of Na2O, which is 2 moles.

Finally, we can calculate the mass of Na2O required:

Molar mass of Na2O = 23 + 23 + 16 = 62 g/mol

Mass of Na2O = number of moles * molar mass = 2 moles * 62 g/mol = 124 g

Therefore, 124 grams of Na2O are required to produce 160 grams of NaOH.

Answer:

algun moderador puede acabar a este otro este me borró respuesta que no debió borrar

Answer:

e. 327/227

Explanation:

This is the correct standard pressure.

Hydrophobic colloids option b- can be stabilized by adsorption of ions.

Hydrophobic colloids are colloidal particles that repel water molecules and tend to aggregate or coagulate in aqueous solutions. To stabilize hydrophobic colloids, surfactants or stabilizing agents are added to the system.

These surfactants have hydrophobic and hydrophilic regions that can adsorb onto the surface of the colloidal particles, forming a protective layer that prevents their aggregation. This adsorption of surfactant molecules on the particle surface is commonly referred to as "stabilization by adsorption of ions".

The surfactant molecules adsorb onto the particle surface with their hydrophobic tails pointing inward towards the particle surface and their hydrophilic heads pointing outward towards the solvent, creating a stable colloidal dispersion. This stabilization mechanism is commonly used in the formulation of emulsions, suspensions, and other colloidal systems.

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B. The particles move faster, and their average kinetic energy increases.

Hope this helps :))

The sample of gas particles as the temperature decreases particles move slower, and their average kinetic energy decreases. option C is correct.

Every matter in this universe consist of small particles and gas also have small particles which are spherical in shape and collide with each other to move in zig zag form.

As temperature decreases the particles will move slow because of low energy as temperature is the source of energy for them and the collision between them also decreases due to which kinetic energy will also decreases.

On increasing the temperature the gas molecules move fast and kinetic energy will also be more.

Therefore, sample of gas particles as the temperature decreases particles move slower, and their average kinetic energy decreases. option C is correct.

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Answer:

3.02 X1023 atoms Ag limol. - - 0.50 1 moles. 6.02241023 atoms.

a. Decreasing alpha from 0.05 to 0.01 makes the significance level more stringent. You will be less likely to reject the null hypothesis, even when it's false. This increases the probability of a Type II error, thus potentially reducing the power of the test. The power curve will shift to the left.

b. If the sample size is reduced from 90 to 50, the effect on the power curve is that it will also shift towards the left.

The power curve is a graph that shows the probability of rejecting the null hypothesis as a function of the true value of the mean.

In the given scenarios of this study, Reducing the significance level and reducing the sample size will shift the power curve to the left, indicating a decrease in the statistical power of the test.

The power of a statistical test is the probability that it correctly rejects the null hypothesis when the alternative hypothesis is true.

a) Reducing alpha from 0.05 to 0.01 means that we are more stringent in our assessment of whether the new treatment is effective.

This will result in a decrease in the power of the test, meaning that it is less likely that we will be able to detect a difference between the new treatment and the previous treatment.

b) If the sample size is reduced from 90 to 50, the effect on the power curve is that it will also shift towards the left.

This is because a smaller sample size decreases the power of the test. A larger sample size provides more information and thus makes it more likely to correctly reject the null hypothesis when the alternative hypothesis is true.

Therefore, by reducing the sample size, you are decreasing the likelihood of detecting a true effect if one exists, thus reducing the power of the test.

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Answer:

Hailey should add, they are inexpensive to produce.

Explanation:

Reason being why they are inexpensive to produce, is due to them being chemical based and easy to product in the factory setting. Which makes them extremely cheap to make.

Reason being why the others are wrong, synthetic polymers are not biodegradable as they are made in a factory with oils. Synthetic polymers are not flexible due to them being used for harder products. Synthetic polymers are not recycled cheaply as they are made with chemicals which makes it very hard to recycle.

answer:D

Explanation: i took it

The scientific statement is

D. There is life on some other planet in the universe aside from Earth.

A scientific statement is a statement that is based on empirical evidence, logical reasoning, and the scientific method. It is a claim or proposition that can be tested, observed, or measured, and is subject to scrutiny and verification.

Scientific statements are characterized by objectivity, reliance on evidence, and the potential for falsifiability or validation through experiments or further investigation. these statements aim to describe, explain, or predict phenomena in the natural world and are an essential part of scientific inquiry and the advancement of knowledge.

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complete question

Which sentence is a scientific statement?

A.

Food cooked in ceramic pots has a better aroma than food cooked in copper pots.

B.

A tall glass of water tastes better with a lemon wedge and ice cubes.

C.

Today, there are more viewers watching baseball than ice hockey on television.

D.

There is life on some other planet in the universe aside from Earth

Answer:

- Anode: Co3+ | Co2+

- Cathode: Ni | Ni2+

Explanation:

The anode is where oxidation reaction occurs, and the cathode is where reduction reaction occurs.

From the table of reduction potencials, we find that:

- Co reaction:

- Ni reaction:

Now, to find out which one is the anode and which one is the cathode, it is necessary to compare the reduction potencials.

The reaction of Ni have negative potentials, so Ni will be the anode and Co will be the cathode.