pls don't answer if you done know. Which of the following best describes what would happen if mitosis did not take place?

A.Cells would get smaller and smaller over time.

B.Body tissues would not be able to repair themselves

C.The production of gametes (reproductive cells) would not occur

D.Organisms would all be multicellular.

pls help i really need this answer

Answer:

11.a

12a

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The best leaving group in a nucleophilic acyl substitution reaction is a weak base.

A good leaving group is a group that can stabilize the negative charge that results from breaking the bond with the substrate. In nucleophilic acyl substitution, the leaving group is often the carboxylate ion (RCO2-). A weak base, such as a carboxylate ion, can stabilize the negative charge on the leaving group better than a strong base. A strong base, such as hydroxide (OH-), is a poor leaving group because it is a strong nucleophile that is likely to attack the electrophilic carbonyl carbon, rather than leaving the molecule. Therefore, in nucleophilic acyl substitution reactions, a weak base is the best leaving group.

what is nucleophilic?

Nucleophilic refers to the ability of a chemical species, such as an atom or a molecule, to donate a pair of electrons to form a new covalent bond with a positively charged or electrophilic species. A nucleophile is a species that donates these electron pairs and is attracted to positively charged or partially positive atoms or molecules, which are called electrophiles.

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If the pressure is initially 1.15 atm before the addition of the gas and the position of the piston does not change,

If the pressure is initially 1.15 atm before the addition of the gas and the position of the piston does not change, then the pressure inside the cylinder will remain the same. This is because the position of the piston does not change, meaning that the volume of the cylinder remains constant.

According to Boyle's law, the pressure of a gas is inversely proportional to its volume when the temperature is kept constant. Therefore, if the volume does not change, the pressure cannot change either. Hence, the new pressure inside of the cylinder will be 1.15 atm, the same as the initial pressure

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One way to distinguish between NH4Cl and AgCl is through a simple solubility test. NH4Cl is a water-soluble salt, meaning it will dissolve in water, while AgCl is insoluble in water.

So if you add both salts to water and only one dissolves, you can easily identify which one is NH4Cl. Another way is through a chemical reaction test. NH4Cl is an acid salt that will react with a base to produce NH3 gas, while AgCl is a neutral salt that will not react with a base.

So if you add both salts to a base, and only one produces NH3 gas, you can identify which one is NH4Cl. AgCl can also be identified through its characteristic white color, while NH4Cl is typically a clear or white powder.

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Answer: 30 g LiF

Explanation:

The concept of energy balance refers to the equilibrium between the energy input into a system and the energy output from that system. It is based on the principle of conservation of energy, which states that energy cannot be created or destroyed but can only be transferred or transformed from one form to another.

In terms of human energy balance, it involves the energy intake from food and beverages (energy in) and the energy expenditure through basal metabolic rate, physical activity, and other bodily processes (energy out). When the energy intake matches the energy expenditure, there is an energy balance. However, when there is an imbalance, either an excess or deficit of energy, it can lead to weight gain or weight loss, respectively.

For example, if a person consumes 2000 calories (energy in) through their diet and expends 2000 calories (energy out) through their daily activities and bodily functions, they maintain an energy balance. This means that the energy intake is equal to the energy expenditure, and their weight remains stable.

On the other hand, if a person consumes 2500 calories (energy in) but only expends 2000 calories (energy out), there is a positive energy balance. The excess energy is stored in the body as fat, leading to weight gain over time.

Conversely, if a person consumes 1500 calories (energy in) but expends 2000 calories (energy out), there is a negative energy balance. The body needs to compensate for the energy deficit by utilizing stored energy reserves, such as fat, resulting in weight loss.

Support for the concept of energy balance comes from scientific studies on weight management and obesity. It has been shown that maintaining an energy balance is crucial for weight maintenance, while sustained positive or negative energy balances can lead to weight changes. Additionally, energy balance plays a role in various physiological processes, including metabolism, hormone regulation, and overall health.

By understanding and managing energy balance, individuals can make informed decisions regarding their diet, physical activity, and lifestyle to achieve and maintain a healthy weight and overall well-being.

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Answer:

Explanation:

Suggestions:

Make sure all words are spelled correctly.

Try different keywords.

Try more general keywords.

Answer:it’s called osmosis

Explanation:Osmosis is a specific type of diffusion; it is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. 

Answer: 3

Nucleon number is 31

Explanation:

Answer:

Im pretty sure its B) 43

Explanation:

Answer:

i looked it up its slinky waves

Explanation:

Answer:

diffracted

Explanation:

Sure it might look like a slinky but if you're talking about waves then it's deffinetly diffracted hope this helps

At high altitudes, the concentration of Bisphosphoglycerate (BPG) increases in red blood cells, resulting in increased oxygen transport to the body's tissues. At low temperatures, the concentration of BPG increases in red blood cells, resulting in increased oxygen transport to the body's tissues. when the blood glucose level is raised, the oxygen-binding capacity of hemoglobin decreases in HbA1C.

a. BPG binds to a specific site on Hb, which is not the same as the oxygen-binding site. When BPG binds to Hb, it stabilizes the T-state of the Hb molecule, which has a lower affinity for oxygen. Oxygen is unloaded from the Hb molecule when BPG binds to it. BPG enhances oxygen transport by releasing it at high altitudes or other places where it is required by the tissues. BPG can be separated from Hb when the partial pressure of oxygen in the body tissues is low.

The Hb molecule can then pick up oxygen at a low oxygen partial pressure because of the absence of BPG. This results in the formation of HbO2 (oxyhemoglobin). In the lungs, BPG is produced from 1,3-BPG by the enzyme bisphosphoglycerate mutase.

At high altitudes, the concentration of BPG increases in red blood cells, resulting in increased oxygen transport to the body's tissues. At low temperatures, the concentration of BPG increases in red blood cells, resulting in increased oxygen transport to the body's tissues.

b. HbA1C glycosylation obstructs BPG binding by competing for a binding site. This means that oxygen-binding capacity of HbA1C decreases in comparison to HbA. When blood glucose levels are high, it causes increased HbA1C levels.

Because BPG binding is reduced as a result of glycosylation, the amount of oxygen carried by hemoglobin is lowered in people with high HbA1C levels. As a result, when the blood glucose level is raised, the oxygen-binding capacity of hemoglobin decreases in HbA1C.

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Because the electrons are switching between one side of the cell and the other, to maintain charge balance.

The correct option is C.

The salt bridge is frequently an upside-down glass U-shaped tube filled with table salt in empirical settings. In order to create an electrochemical cell, its two legs dip into two different electrolyte vessels (the half-cells).

The salt bridge's job is to maintain the solutions' electrical neutrality while allowing unrestricted ion passage across cells. The absence of the salt bridge will result in a buildup of both positive and negative charges surrounding the electrodes, which will stop the reaction.

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The complete question is -

What is the main purpose of a salt bridge?

A-To maintain solution volume to allow higher concentration solution

B-To migrate to lower concentration solution.

C-To maintain charge balance because the electrons are moving from one-half cell to the other.

D-To allow exchange of metal cations only

The two compositional groups that can be ruled out for an igneous rock that contains quartz are mafic and ultramafic based on Bowen's reaction series, which defines the order of mineral crystallisation during the cooling of magma.

A geological principle known as Bowen's reaction series explains the sequence in which minerals form from cooling magma. In the early 1900s, Canadian geologist Norman Bowen made the initial suggestion. The theory describes how different minerals develop at various temperatures when lava cools. Higher temperature minerals begin to develop first, followed by minerals that crystallise at lower temperatures. Understanding the content and texture of igneous rocks requires an understanding of the order in which minerals crystallise. Bowen's reaction series is used to analyse the geological history of a region and anticipate the kinds of minerals and rocks that would occur under certain cooling circumstances.

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Which compositional groups of igneous rocks can be excluded based on the presence of quartz in the rock, and what is the scientific basis for this exclusion?

Answer:

elements hope this answer helps you out! :)

Answer:

Elements

Explanation:

Water = water

Carbon Dioxide = gas

Answer:

It is important to identify it because the two types of crust are made up of two different types of rock

Explanation:

Have a nice day

The intermolecular forces between particles in a solid are stronger than those in a liquid.

Given the small intermolecular spaces in solids, the intermolecular force of attraction is very strong. This is the primary reason why solids cannot be easily compressed. Because the molecules in a particular solid cannot swap positions, solids have a definite shape and volume.

When compared to liquids and gases, solids typically have the strongest intermolecular forces. Because the particles in solids are closely packed, they are incompressible and have a high density. As a result, when compared to solids and liquids, gases have the weakest intermolecular force of attraction. It varies depending on the type of matter.

The following is the increasing order of force of attraction in three states of matter: gases, liquids, and solids.

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Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of bromine = 50 mL

density = 3.10 g/cm³

It's mass is

mass = 50 × 3.10

We have the final answer as

Hope this helps you

Answer:

\(\boxed {\tt 155 \ grams}\)

Explanation:

The formula for density is:

\(d=\frac{m}{v}\)

Rearrange the formula for mass, m. Multiply both sides by v.

\(d*v=d=\frac{m}{v}*v\)

\(d*v=m\)

Mass is found by multiplying the mass by the volume.

The density of the bromine is 3.10 grams per cubic centimeter. The volume is 50 milliliters. Since a milliliter is equal to a cubic centimeter, the volume is also 50 cubic centimeters.

\(d= 3.10 \ g/cm^3\)

\(v= 50 \ cm^3\)

Substitute the values into the formula.

\(m=d*v\)

\(m=3.10 \ g/cm^3 *50 \ cm^3\)

Multiply. Note the centimeters cubed will cancel out.

\(m=3.10 \ g * 50\)

\(m= 155 \ g\)

The mass of the bromine is 155 grams.

Answer:

True

Explanation:

All living things are made from many cells

Answer:

\(\huge\boxed{True}\)

Explanation:

All living things are composed of cells which are the basic building blocks of living things.

Cell => Tissue => Organ => Organ System => Organism

So, Cell is the "basic" unit of living organism without  which living things cannot be mage or cannot function.

\(\rule[225]{225}{2}\)

Hope this helped!

The  I-methylcyclohexanol is synthesized by hydroboration oxidation. Methylenecyclohexane can be converted to cyclohexylmethanol through a reduction reaction. Methylenecyclohexane can be converted to 1-(hydroxymethyl)cyclohexanol through a process called hydroformylation followed by reduction.

(a) I-methylcyclohexanol:

Methylenecyclohexane can be converted to 1-methylcyclohexanol through a process called hydroboration-oxidation. The synthesis steps would involve:

Addition of borane (BH₃) to methylenecyclohexane to form the corresponding borane complex.

Oxidation of the borane complex using hydrogen peroxide (H₂O₂) or sodium hydroxide (NaOH) to obtain 1-methylcyclohexanol.

(b) Cyclohexylmethanol:

The synthesis steps would involve:

Use of a reducing agent, such as lithium aluminum hydride (LiAlH₄) or sodium borohydride (NaBH₄), to reduce methylenecyclohexane, resulting in the formation of cyclohexylmethanol.

(c) 1-(Hydroxymethyl)cyclohexanol:

Hydroformylation of methylenecyclohexane using a mixture of carbon monoxide (CO), hydrogen gas (H₂), and a catalyst such as rhodium or cobalt, leading to the formation of an aldehyde.

Reduction of the aldehyde intermediate using a reducing agent like sodium borohydride (NaBH₄) or lithium aluminum hydride (LiAlH₄), resulting in the formation of 1-(hydroxymethyl)cyclohexanol.

(d) Trans-2-methylcyclohexanol:

Methylenecyclohexane can be converted to trans-2-methylcyclohexanol through a combination of hydrogenation and isomerization reactions. The synthesis steps would involve:

Catalytic hydrogenation of methylenecyclohexane using hydrogen gas (H₂) and a suitable catalyst like palladium on carbon (Pd/C) or platinum (Pt), leading to the formation of cis-2-methylcyclohexanol.

Isomerization of cis-2-methylcyclohexanol to trans-2-methylcyclohexanol using an acid catalyst or by heating.

(e) 2-Chloro-1-methylcyclohexanol:

Methylenecyclohexane can be converted to 2-chloro-1-methylcyclohexanol through a substitution reaction with a chlorine source. The synthesis steps would involve:

Treatment of methylenecyclohexane with a chlorine source such as hydrogen chloride (HCl) or thionyl chloride (SOCl₂), leading to the substitution of a hydrogen atom with a chlorine atom, resulting in the formation of 2-chloro-1-methylcyclohexanol.

(f) 1-(Phenylmethyl)cyclohexanol:

Methylenecyclohexane can be converted to 1-(phenylmethyl)cyclohexanol through a Friedel-Crafts alkylation reaction. The synthesis steps would involve:

Treatment of methylenecyclohexane with benzene and a Lewis acid catalyst such as aluminum chloride (AlCl₃) or iron(III) chloride (FeCl₃) under appropriate reaction conditions, leading to the alkylation of benzene with a phenylmethyl group and forming

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Answer:

7.8286×10^21 particles

Explanation:

atomic mass of potassium = 39.1 u

1 u = 1 g/mol

Potassium (K) = 39.1 g/mol × 2 =  78.2 g/mol

Oxygen (O)     =     16 g/mol × 1  =    16  g/mol

K₂O = 94.2 g/mol

1.224 g / 94.2 g/mol = .013 moles

Avogadro's number = 6.022×10²³

particles = moles x Avogadro's number

particles = .013 moles x 6.022×10^23

particles = 7.8286×10^21 particles

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socratic

Answer:

4 sun , planet, moon are the components in the correct order

Answer:

p-Nitro acetanilide. 2-Naphthol aniline dye.

The two organic compounds synthesized from inorganic substance​ is p-Nitro acetanilide and 2-Naphthol aniline dye.

Organic compounds are defined as any of the large class of chemical compounds in which one or more atoms of carbon are covalently liked to atoms of another elements, commonly hydrogen, oxygen and nitrogen.  

There are mainly four types of organic compounds

Inorganic compounds are defined as any substance in which two or more chemical elements are combined in definite proportion.  

There are mainly four class of inorganic compounds

Thus, the two organic compounds synthesized from inorganic substance​ is p-Nitro acetanilide and 2-Naphthol aniline dye.

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Answer:

Option A:

Zn(s) + Cu^(2+) (aq) → Cu(s) + Zn^(2+)(aq)

Explanation:

The half reactions given are:

Zn(s) → Zn^(2+)(aq) + 2e^(-)

Cu^(2+) (aq) + 2e^(-) → Cu(s)

From the given half reactions, we can see that in the first one, Zn undergoes oxidation to produce Zn^(2+).

While in the second half reaction, Cu^(2+) is reduced to Cu.

Thus, for the overall reaction, we will add both half reactions to get;

Zn(s) + Cu^(2+) (aq) + 2e^(-) → Cu(s) + Zn^(2+)(aq) + 2e^(-)

2e^(-) will cancel out to give us;

Zn(s) + Cu^(2+) (aq) → Cu(s) + Zn^(2+)(aq)

215 grams of AlCl₃ is equal to 1,61 moles of AlCl₃. The relative molecular mass of the compound AlCl₃ is 133.5 grams/mol.

The mole is one of the basic units used to indicate the amount of substance in the international system of units. The equation for calculating moles is mol = mass / relative atomic mass. To find out the mol of AlCl₃ you can use the following steps

Step 1: Calculate the relative molecular mass for the compound AlCl₃.

Mr AlCl₃ = ( Ar Al × ∑Al ) + ( Ar Cl × ∑Cl)

              = ( 27 gam/mol × 1) + ( 35,5 gram/mol × 3)

              = 27 gram/mol + 106,5 gram/mol

             = 133,5 grams/mol

Step 2: Calculate the moles of the compound AlCl₃.

n AlCl₃ = mass AlCl₃ ÷ relative molecular mass AlCl₃

            = 215 grams ÷ 133,5 grams/mol

            = 1,61 mol

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Answer:

number of protons and neutrons

Explanation:

Answer:

The extraction is done by electolysis but first the aluminium oxide must be melted so that electricity can pass through it...The use of molten cryolite as a solvent reduces some of the Energy

costs involved in extracting aluminum by allowing the ions in aluminum oxide to move freely at low temperature ..