Can somebody please help write a short paragraph about this including all the words listed in the question. Thanks!

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Answer:

Sample Respond: The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell.

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Explanation:

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Answer:

so what do you need help with?

Explanation:

Answer:

what do you need help with i will try to answer

Explanation:

Answer:

204,375 mL.

Explanation:

327 mL - 3.2 M

x mL - 2 M

x= (2 M x 327 mL) /3.2 M

x= 204,375 mL.

Explanation:

The first statement is correct

Li &Na

Answer:

Chemical reaction occurs when chemical bonds between atoms are formed or broken . The substance that go into a chemical reactions are called reactants, and the substance produced at the end of the reaction are known as the product .

Answer:

These clouds extend through the lower and mid-layers of the troposphere bringing rain to the surface below.

Explanation:

The bases of clouds in the middle level of the troposphere, given the prefix “alto,”

Option C) 19.3L is the correct answer.

Hence, the final volume of the gas at the standard atmospheres and temperature is 19.3L.

Given the data in the question;

At Standard temperature and pressure( STP)

Then

Final Volume; [tex]V_2 = \ ?[/tex]

Combined gas law combines both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]

To determine the new volume of the gas, we substitute our values into the expression above.

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\\\P_1V_1T_2 = P_2V_2T_1\\\\1.00atm * 29.3L * 250.15K = 1.39atm * V_2 * 273.15K\\\\7329.395atm.L.K = 379.6785atm.K * V_2\\\\V_2 = \frac{7329.395atm.L.K}{379.6785atm.K} \\\\V_2 = 19.3L[/tex]

Option C) 19.3L is the correct answer.

Hence, the final volume of the gas at the standard atmospheres and temperature is

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Answer:

They are food for some animals. Some animals use them for nesting material. Humans can dry and burn some types of nonvascular plants as a fuel.

Explanation:

Some nonvascular plants produce various nutrients that are passed to the soil and can be used by other plants. Also, nonvascular plants that cover a large surface area help maintain the cohesion of the land by reducing the risk of erosion. Nonvascular plants are also very important to animals.

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Answer:

A. Things are measured the same way each time.

Explanation:

The resulting pressure of the gas after decreasing the initial volume from 2 L to 1 L is 3 atm.

According to the Boyle's Law at constant temperature, pressure of the gas is inversely proportional to the volume of that gas.

For the given question we use the below equation is:

P₁V₁ = P₂V₂, where

P₁ = initial pressure of gas = 1.5 atm

V₁ = initial volume of gas = 2 L

P₂ = final pressure of gas = ?

V₂ = final volume of gas = 1 L

On putting all these values on the above equation, we get

P₂ = (1.5atm)(2L) / (1L) = 3 atm

Hence required pressure of the gas is 3 atm.

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Given its small size and high polarizing power, lithium is only involved in covalent rather than ionic bonds in the body as does sodium, potassium, and calcium.

Lithium is a metal and a member of group 1 in the periodic table. It is a very small ion hence it has a different chemistry from the rest of the members of the group.

Lithium is not part of any of the biomolecules because given its small size and high polarizing power, it is only involved in covalent rather than ionic bonds in the body as does sodium, potassium, and calcium.

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Answer:

The element that is commonly used to reduce iron oxide would be carbon.

Explanation:

:)

Iron oxide is reduced to a lower oxide or metal by gaseous carbon monoxide or solid carbon.

Reduction is defined as the chemical reaction which involves addition of hydrogen or removal of oxygen or gain of electrons.

For example,

2Na + H2 → 2NaH (addition of hydrogen)

CuO + H2 → Cu + H2O(removal of oxygen)

Fe3+ + e- → Fe2+ (gain of electron)

Above example of reduction reaction is when oxygen reacts with iron to form rust. In this reaction oxygen is reduced because it accepts electrons from iron, which is oxidized.

Thus, Iron oxide is reduced to a lower oxide or metal by gaseous carbon monoxide or solid carbon.

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Answer:

GEL

Explanation:

A colloid is a type of mixture that consists of insoluble particles in another substance. Liquid dispersed in a colloidal solid is called a gel.

A gel is the dispersion of liquid molecules in a solid medium. It is a type of mixture that includes the suspension of particles in another substance. They are colloid that behaves like solid.

The liquid molecules of the medium become thick and viscous in the solid particles and form aggregates of the particles.

Therefore, colloid in which liquid is dispersed in solid is gel.

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If a mixture of hydrochloric acid and lithium hydroxide produces lithium chloride and water, 3.25 moles of water are produced from 3.25 moles of hydrochloric acid.

According to this question, a mixture of hydrochloric acid and lithium hydroxide produces lithium chloride and water. The balanced chemical equation is as follows:

HCl + LiOH = LiCl + H2O

Based on the above equation, 1 mole of HCl produces 1 mole of water.

3.25 moles of HCl will produce 3.25 moles of H2O.

Therefore, a mixture of hydrochloric acid and lithium hydroxide produces lithium chloride and water, 3.25 moles of water are produced from 3.25 moles of hydrochloric acid.

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Answer:

Three principal theories about acid-base are,

1. Arrhenius theory

2. Bronsted-Lowry theory

3. Lux-Flood definition

4. Lewis theory

5. Usanovich definition

1. According to the Arrhenius, acids give up hydrogen ion in aqueous medium and a base give up hydroxyl ion in its aqueous medium. Examples are aqueous solution of HCl, CH3COOH, PhCOOH, and H2SO4. These give up H+ in an aqueous medium. Aqueous solutions of NaOH, Ca (OH)2 are Arrhenius bases.

Arrhenius theory has some limitations. This theory cannot explain the acidic nature of BF3 or basic behavior of NH3. This theory fails to give any explanation about acidity and basicity which does not produce H+ and OH- in their aqueous solutions.

2. According to the Bronsted-Lowry, an acid releases proton and a base accepts proton. NH3 accepts proton and forms ammonium ion, so ammonia acts as a base.

But this theory also has limitations. According to this theory acidic behavior of BF3 still cannot be explained.

3. Lux-Flood describes the acid-base theories based on oxide ion transformation. It gives clear explanation for acid-bases theories of non-protonic system. According to them, a base will donate the oxygen atom and an acid will accept oxygen atom.

4. According to the Lewis theory, acids are those substances which accept electron pair and base are those substances which donates electron pairs. Lewis theory can explain the acidic nature of BF3. In BF3, B is two electrons short to fulfil its octet. So it can accept a pair of electrons from an electron donating substituent. So it is an electron pair acceptor compound and acts as an acid.

Substances which have π electrons can donate electron pair to an electron deficient substance and acts as a base. Ethylene and acetylene is Lewis bases. AlCl3, PCl3 are Lewis acids.

5. According Usanovich, an acid is some chemical species which would react with bases and yields cations or accepts anions or electrons. A base is some chemical species which would react with acids, yield anions or electrons or combine with cations.

Explanation:

Answer:

There is drawing of the major organic product of reaction

Answer:

Option 2 is correct.

Answer:

1 mole of water weighs 18g. 10/18 moles = 10/18 * 6 * 10^23 number of molecules = 3.33 * 10^23 molecules of water. Each molecule of water has 3 atoms, so the total number of atoms in 10g of water is 3*3.33*10^23 = 10^24.

Explanation:

Answer:

Negative impacts include: noise, air and odour pollution from collection and reprocessing facilities; costs to set up recycling infrastructure and education materials for new areas; and costs associated with innovations and technologies, which are likely to be passed on to end consumers in product prices.

Explanation:

Answer:

It goes through a process called absorption. This is when an atom absorbs the energy from its surroundings. The electrons move from the ground state to the excited state because of this process. Once the atoms absorb energy, that affects the inner development when shifting to a new state of being.

Explanation:

The process that is known as absorption is when an atom absorbs energy from its surrounding racing it's energy level causing it to go into an excited state or highly-reactive state. When an atom goes through this process, electrons absorb the energy and raise to higher energy levels, therefore raising the stage of itself. This is how it gets into a excited state.

This is a microscope.

Hope this clears that up for you.

Answer:

B, as height increases gravitational energy increases

Answer:

true

Explanation:

Temperature is a measure of the average kinetic energy of the molecules, so energy would naturally be transferred from the molecules with more kinetic energy to the molecules with less kinetic energy

The absorbance of a solution that has a concentration of 1.8 is 152.75.

The absorbance of a substance can be calculated using Beer's law equation as follows:

A = εmCl

Where;

According to this question, the following information are given:

A = 42.43 × 1.8 × 2

A = 152.75

Therefore, the absorbance of a solution that has a concentration of 1.8 is 152.75.

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Answer:

9   I believe

Explanation:

Answer:

Answer:

Salt marshes have shallower water than oceans

Explanation:

oceans go way deeper then salt marshes with the deepest part of thr ocean at 35,876ft deep

Answer: Salt marshes have shallower water than oceans.

Explanation: oceans are deeper

The solubility curve can show the variation of solubility with temperature.

A saturated solution is one in which there is just enough solute as it can dissolve at a given temperature. The imege is missing hence the question is incomplete.

The solubility curve shows us the solubility of each substance but unfortunately we do not have it hence we can not answer the questions but we do know that the solubility curve can show the variation of solubility with temperature.

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