OMG plz help me out with this!!
What are 3 differences between animal cells and plant cells?
What do the cell wall and chloroplasts do for the plant cell?
What are 2 things that animal cells and plant cells have in common?
Thank you!

They appear as the trait over a recessive allele. Statement C) is true about the dominant alleles.

Dominant alleles are genetic variants that, when present in an individual's genotype, are expressed phenotypically, meaning they determine the visible or observable traits. Dominant alleles are represented by capital letters, while recessive alleles are represented by lowercase letters in genetics.

In terms of inheritance, if an individual has at least one copy of the dominant allele, it will be expressed in the phenotype, regardless of the presence of a recessive allele. This is because dominant alleles exert their influence over recessive alleles, thus "dominating" their expression.

To illustrate this, let's consider a specific example using a trait controlled by a single gene with two possible alleles: dominant (A) and recessive (a). If an individual is homozygous dominant (AA), meaning they possess two copies of the dominant allele, the dominant trait will be expressed.

However, if an individual is homozygous recessive (aa), with two copies of the recessive allele, the recessive trait will be expressed since there are no dominant alleles to override it.

Therefore, dominant alleles appear as the trait over recessive alleles, regardless of the presence or absence of a recessive allele. The presence of even a single copy of the dominant allele is sufficient for its expression in the phenotype. Option C

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The percent ionic character of a molecule can be calculated using the following equation:

Percent Ionic Character = 100 × (μ/r)^2

Where μ is the dipole moment in Debye and r is the bond length in picometers.

Plugging in the given values, we get:

Percent Ionic Character = 100 × (1.39/121)^2

Percent Ionic Character = 100 × (0.0115)^2

Percent Ionic Character = 1.32%

What is dipole moment?

The dipole moment is a measure of the separation of positive and negative charges in a molecule. It is represented by the vector sum of the individual bond dipole moments and is measured in debyes (D).

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3.2 g KClO3

Explanation:

1.1 g C12H22O11 × (1 mol C12H22O11/342.3 g C12H22O11)

= 0.0032 mol C12H22O11

0.0032 mol C12H22O11 × (8 mol KClO3/1 mol C12H22O11)

= 0.026 mol KClO3

Therefore, the minimum amount of KClO3 needed is

0.026 mol KClO3 × (122.55 g KClO3/1 mol KClO3)

= 3.2 g KClO3

Answer:

When the electrons move from the cathode to the anode, they increase the chemical potential energy, charging the battery when they move the other direction, they convert this chemical potential energy to electricity in the circuit and discharge the battery.

Explanation:

Considering the definition of molar mass, the correct answer is option c): the mass of 1.85 moles H₂O₂ is 62.9 grams.

The molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.

The molar mass of a compound is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

So, the molar mass of the compound H₂O₂ is calculated as:

H₂O₂= 2× 1 g/mole + 2× 16 g/mole

Solving:

H₂O₂= 34 g/mole

You can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 34 grams, 1.85 moles of the compound contains how much mass?

mass= (1.85 moles× 34 grams)÷ 1 mole

mass= 62.9 grams

Finally, the mass of 1.85 moles H₂O₂ is 62.9 grams.

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From the information provided in the question, we can see that; the electron moved up to an energy level and has an energy of 21.72 x 10-19 J.

Bohr's model of the atom tells us that electrons are found in certain specific energy levels. Energy is absorbed when an electron moves from a lower to a higher energy level and energy is released when an electron moves from a higher to a lower energy level.

Given that;

ΔE = E2 - E1

E2 = final energy level

E1 = initial energy level

E2  = ?

E1 =  16.32 x 10-19 J

ΔE =  5.4 x 10-19

E2 = ΔE + E1

E2 = 5.4 x 10-19 + 16.32 x 10-19 J

E2  = 21.72 x 10-19 J

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The density of ammonia is 00117 gm|M|.

We know D = MP/RT

Now, P = 1600 mm = 1600/760=2.10atm

∴D=\(\frac{17\times2.10}{821\times 373}\)

D= 0.00117 gm|M|

Density of a material shows the density of that material in a  given area. The density of a material is defined as its mass per unit volume. Density is basically a measure of how tightly  packed a substance is. It is a unique physical property of a particular object. The principle of density was discovered by the Greek scientist Archimedes. Calculating density is easy  if you know the formula and understand the  units involved. The symbol ρ means density, or it can also be indicated by the letter D.

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d = 0.00117gm|M|

The density of ammonia gas is 0.00117gm|M|

Here we want to find density of ammonia gas,

The equation is,

                       d = MP/RT,

where d is the gas's density in g/L,

M is the gas's molar mass in g/mol,

P is the gas's pressure in ATM, and R is the gas law constant.

The equation shows that as the density of a gas increases, so does its molar mass.

given ,

M = 17.1 g/mol

P = 1600mmHg => (to convert to ATM) = 1600/760  = 2.10 atm

R= 8.31J/K⋅mol

T= 373°c

substituting values,

        d = (17.1 x 2.10) / 8.31 x 373

         d  = 0.00117gm|M|

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Answer:

: kinetic energy is the energy transformation that occurs in a hot balloon.

Explanation:

Hot air balloons use a propane burner that converts chemical energy to thermal energy. The hot air is less dense than than the colder air and it lifts the balloon

287.13 grams of Al₂O₃ were decomposed. Therefore, option A is correct.

The term molar mass is defined as the mass in grams of one mole of the compound. A mole of any substance is 6.022 × 10²³ molecules. It is called as Avogadro's number. The molar mass is a bulk property, it is not molecular, property of a substance.

2Al₂O₃ ⇒ 4Al + 3O₂

Thus, 4 mol of Al combine with 3 mol of oxygen to form 2 mol of Al₂O₃.

2 mol of Al corresponds to 2 × 27 = 54g

Thus, the weight of Al used in the reaction is 108 g.

Molar mass of Al₂O₃ is 101.96g/mol.

5.63 moles of Al = 5.63 × 54 / 101.96

= 287.13 grams

Thus, 287.13 grams of Al₂0₃ were decomposed, option A is correct.

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The International Union of Pure and Applied Chemistry (IUPAC) provides a standard system for naming organic compounds.

It is essential to learn this nomenclature system to communicate correctly about the chemical structures of compounds and how they relate to each other. Here is the IUPAC name of the following substance.Below is the structure of the given compound: In the given compound, there are four carbon atoms that are connected with single bonds. Carbon atoms are also attached to hydrogen atoms. Since it has four carbons in the main chain, the root name will be "but-". The functional group present in the molecule is the carboxylic acid group (-COOH), which gives the suffix "-oic acid." Therefore, the IUPAC name of the given substance is Butanoic acid.Thus, the IUPAC name of the given compound is Butanoic acid. It is essential to know the IUPAC naming of organic compounds to communicate correctly about the chemical structures of the compounds.

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For the given reaction, according to Le -Chatlier principle adding a catalyst will bring the reaction to the right. Removing the hydrogen gas shift  the equilibrium to the left and increasing pressure also shift to right.

According to this principle, when some a disorder is affecting the equilibrium of the system. The system balanced the factors which created the disorder and make  a new equilibrium.

A catalyst always helps to proceed the reaction in the forward direction. Thus adding a catalyst shift the equilibrium to the right.

If any  reactant or produced is removed from the system, the system shifts to the equilibrium to that direction in which they are producing. Removing hydrogen gas will then shift the reaction to the right to produce more hydrogen.

Increasing pressure shift the equilibrium to those direction in which the number of number of moles of gases decreases. Hence, the reaction shifts to the right here.

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The atomic mass of an atom if its mass is approximately equal to carbon-12 will be 12 and in case of 4.5 times carbon-12 will be 54

Atomic mass of an element is the average mass of the atoms of an element which are measured in atomic mass unit. Or we can also say that the atomic mass is actually the weighted mass is a weighted average of all of the isotopes of elements, in which the mass of each element is multiplied by the abundance of that particular isotope.

So the atomic mass of an atom if the mass is approximately equal to carbon-12 then the mass of the element will be equal to 12 as the atomic mass of carbon-12  is 12.

where as the atomic mass of an atom if its mass is approximately equal to 4.5 times as much as carbon-12 will be ⇒ 4.5×12= 54

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Answer:

all I can think of is gamma rays

When copper is placed in water, it reacts with the water molecules to form copper(II) ions and hydrogen gas. The reaction is exothermic, which means it releases heat energy into the surroundings. By measuring the temperature changes that occur, we can determine the amount of heat that is released by the reaction.

The temperature changes can be measured using a thermometer. We can place the copper metal in a container of water and take the initial temperature reading. Then, we can add the copper to the water and record the temperature change over time. By monitoring the temperature changes, we can observe the exothermic reaction taking place.

The heat released by the reaction between copper and water has many practical applications, including in the design of power plants and in the production of steam for heating and electricity generation. Therefore, understanding the heat released during this reaction is important for a variety of scientific and engineering fields.

In conclusion, step 7 of putting copper metal in water and measuring the temperature changes allows us to observe and measure the heat released by the exothermic reaction between copper and water, which has important applications in various scientific and engineering fields.

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Answer:

Aluminum

copper

Iron

Lead

The Final Slide:

Aluminum- 0.90

Copper- 0.35

Iron- 0.44

Lead- 0.12

Explanation:

I hope this helps! :))))

\(p = 10 \frac{a - b}{(c + t)} \)

Vapor Pressure of Water calculator Formula:

\(p = 10 \frac{a - b}{(c + t)} \)

Answer:

B.

Explanation:

it's B because 4 x 2 is 8 and we all know 8 x 8 is 64. So the answer is B.

The equation that is correct if the volume of a block is 64 cm³ is 8 cm x 4 cm x 2 cm = 64 cm³. The correct option is B.

Volume is the space occupied by any three-dimensional object. The volume is also considered as the total weight of the object. The volume is calculated as mass is divided by the density.

A block will be a rectangle because it contains length, breadth, and height. The formula will be V = L x B x H

As take all the options, and multiply them, we can calculate the actual volume of the box;

5 cm x 5 cm x 5 cm = 125

8 cm x 4 cm x 2 cm = 64 cm3

5 cm + 5 cm + 5 cm = 15

8 cm + 4 cm + 2 cm = 14

So, the correct option will be B, 8 cm x 4 cm x 2 cm = 64 cm. All others are incorrect.

Thus, the correct option is B.  8 cm x 4 cm x 2 cm = 64 cm.

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Answer:

6.0221421 x 1023 or 6160.6513683

Explanation: Avogardo's number is 6160.6513683 . which is the answer to the equation above.

Answer:

B) Pressure and Temperature

Explanation:

Just did it

Answer:

Hafnium is more likely to be the identity of the substance.

Explanation:

The given information about the substance is:

- Mass: 46.9g

- Volume: 3.5cm^3

- Solid at room temperature (23°C)

We can calculate the density of the substance by replacing the values of mass and volume in the density formula:

Now we know that the density of the substance is 13.4g/cm^3.

At this point, the substance could be mercury or hafnium, because they have a similar density, but we also know that the substance is solid at 23°C, so since hafnium has a melting point of 2,233°C, it is more likely to be the identity of the substance.,

The pH of the solution would be 4.5

What is pH?

It is the degree of acidity or alkalinity of a substance.

The pH of any substance is mathematically given as:

pH = -log [\(H^+\)]

In this case,  [\(H^+\)] = 3.43 x \(10^{-5}\)

Hence,

pH = -log 3.43 x \(10^{-5}\) = 4.46 = 4.5 to 1 decimal place

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Ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)) mixture could be a useful buffer in a solution. Option C

A buffer is a solution that can resist changes in pH when small amounts of acid or base are added. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. The buffer system works by the principle of Le Chatelier's principle, where the equilibrium is shifted to counteract the changes caused by the addition of an acid or a base.

In option A, acetic acid (\(CH_3CO_2H\)) is a weak acid, but hydrochloric acid (HCl) is a strong acid. This combination does not form a buffer because HCl is completely dissociated in water and cannot provide a significant concentration of its conjugate base.

Option B consists of sodium hydroxide (NaOH), which is a strong base, and elemental sodium (Na), which is a metal. This combination does not form a buffer as there is no weak acid-base pair involved.

Option D contains acetic acid (\(CH_3CO_2H\)), a weak acid, and ammonia (\(NH_3\)), a weak base. Although they are weak acid and base, they do not form a buffer system together as they are both weak acids or bases and lack the required conjugate acid-base pair.

Option C, ammonia (\(NH_3\)), is a weak base, and ammonium chloride (\(NH_4Cl\)) is its conjugate acid. This combination can form a buffer system. When ammonia reacts with water, it forms ammonium ions (NH4+) and hydroxide ions (OH-).

The ammonium ions act as the weak acid, while the ammonia acts as the weak base. The addition of a small amount of acid will be counteracted by the ammonium ions, and the addition of a small amount of base will be counteracted by the ammonia, thus maintaining the pH of the solution relatively stable.

Therefore, option C, consisting of ammonia (\(NH_3\)) and ammonium chloride (\(NH_4Cl\)), is the suitable mixture that could be a useful buffer in a solution.

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The net ionic equation for the reaction would be: Zn(s) + Cu(NO3)2(aq) → Cu(s) + Zn(NO3)2(aq)

In this reaction, zinc metal (Zn) reacts with aqueous copper(II) nitrate (Cu(NO3)2) to form solid copper (Cu) and aqueous zinc nitrate (Zn(NO3)2).

Zn(s) + Cu(NO3)2(aq) → Cu(s) + Zn(NO3)2(aq)

To write the net ionic equation, we need to remove the spectator ions (ions that do not participate in the reaction and remain unchanged).

The complete ionic equation is:

Zn(s) + Cu2+(aq) + 2NO3-(aq) → Cu(s) + Zn2+(aq) + 2NO3-(aq)

The spectator ions are the two nitrate ions (NO3-), which appear on both sides of the equation. Therefore, we can eliminate them from the equation to obtain the net ionic equation:

Zn(s) + Cu2+(aq) → Cu(s) + Zn2+(aq)

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Answer:

Your body can cool itself by sweating. When sweat evaporates, it lowers your temperature

Explanation:

Balancing a chemical equation is the process of ensuring that the number of atoms of each element in the reactants is equal to the number of atoms of that same element in the products.

Balance the chemical eqations given in the problem?

Chemical equations are used to describe the reactants and products in a chemical reaction. These equations are written using chemical formulas and symbols, indicating the types and numbers of atoms or molecules involved in the reaction. However, these equations must be balanced to obey the law of conservation of mass, which states that the total mass of the reactants must equal the total mass.

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First, let's see that we can extract the concentration of OH- because Ba(OH)2 is a base. Let's see the dissociation of this base:

You can realize that we have 2 moles of OH-. The next step is to multiply this number of moles by the concentration (0.050 M):

Remember that the formula of pOH is -log ( [OH-] ):

And with this result, we can find pH, using the formula:

And we're going to obtain:

The pH of the solution would be 13, so the answer is (2).

The hydrogen molecule in the container has a ground state energy of 3.17 x 10-18J. The quantum state that would match this thermal energy's associated quantum number is 30.

The ground state energy of the hydrogen molecule in the container can be determined using the Schrödinger equation in one dimension. The following is the Schrödinger equation for a particle in a one-dimensional box: E(n) = (n^2 x h^2)/(8mL^2) E(n) is the energy of the nth energy level, L is the length of the container's side, h is Planck's constant, and m is the mass of the hydrogen molecule.

(a) For n=1 as ground state E(1) = 1^2 * (6.626 x 10^-34)^2)/(8*1.67x10^-27* (20 x 10^-2)^2) = 3.17 x 10^-18 J

(b)The Schrödinger equation must be rearranged in order to determine the quantum number n that corresponds to a thermal energy of kBT/2:

n = √(8mL^2 * E(n)/h^2)

n = √(8x1.67x10-27x(20 x 10-2)^2x(1.38 x 10-23x300)/(6.626x 10 ^-34) ^2)

n = 29.9

The thermal energy of kBT/2 therefore has a quantum number n that is roughly 30.

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complete question: Hydrogen H2 molecules are kept at 300.0K in a cubical container with a side length of 20.0cm. Assume that you can treat the molecules as though they were moving in a one-dimensional box. (a) Find the ground state energy of the hydrogen molecule in the container. (b) Assume that the molecule has a thermal energy given by kBT/2 and find the corresponding quantum number n of the quantum state that would correspond to this thermal energy.

Answer:

4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g)

Explanation:

Answer:

0.849 L

Explanation:

Since pressure is being held constant, you need to use the Charles' Law equation to find the final volume. The equation looks like this:

V₁ / T₁ = V₂ / T₂

In this equation, "V₁" and "T₁" represent the initial volume and temperature. "V₂" and "T₂" represent the final volume and temperature. After you plug the given values into the equation, you can simplify to find "V₂".

V₁ = 13.3 L                         V₂ = ? L

T₁ = 47 °C                          T₂ = 3 °C

V₁ / T₁ = V₂ / T₂                                    <----- Charles' Law equation

13.3 L / 47 °C = V₂ / 3°C                      <----- Insert values

0.283 = V₂ / 3 °C                                 <----- Simplify left side

0.849 = V₂                                          <----- Multiply both sides by 3 °C

Answer:

No

Explanation:

Wheat flour is an impure substance because it is made up of two or more types of atom