TRUE/FALSE. protein molecules are chains of subunits called amino acids.

Answer:

4.74 x 10-28 Joules

Explanation:

These are the options for the question

. These are the options for the question

.A 4.74 x 10-28 Joules

B. 4.74 x 10-19 Joules

C. 8.35 x 10-32 Joules

D. 2.79 x 10-40 Joules

The energy of the wave can be calculated using below expresion

E=hc/λ

Where h= Plank's constant

c= speed of light

(λ)= 4.2 x 10-7 m

h=6.626×10^-34kgm^2/s

c=2.998×10^8m/s

If we input the values in the formula above, we have

E= (6.626×10^-34×2.998×10^8)/4.2 x 10-7

E=1987.8×10-28/4.2 x 10-7

E=4.74 x 10-28 Joules

Therefore, the energy of the wave is

4.74 x 10-28 Joules

The number of moles of aluminum present in an Al cylinder with a mass of 15 g is C. 0.56 moles

To find the number of moles of aluminum present in an Al cylinder with a mass of 15 g, you can use the formula:

Number of moles = mass / molar mass

The molar mass of aluminum is 26.98 g/mol. Therefore, you can plug in the given values into the formula to find the number of moles:

Number of moles = 15 g / 26.98 g/mol

Number of moles = 0.556 moles ≅ 0.56 moles

Therefore, the correct answer is C. 056 moles of Aluminum.

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The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

Explanation:

Answer:

There are 5.43 grams of NaOCl

Explanation:

The given percent by mass of the solute tells us that out of the 150 g of the solution, 3.62% are due solely to the solute.

In other words, the mass of the solute in the solution is:

Thus, in 150 grams of the given bleach solution, there are 5.43 grams of sodium hypochlorite.

To raise the temperature of a 10.35g sample of carbon tetrachloride from 32.1°c to 56.4°c, 222.92J heat is required.

Heat is a form of energy and it is associated with the motion of particles. The amount of heat required to change the temperature of a substance depends on its mass, the specific heat capacity of the substance and the change in temperature.

The mass of carbon tetrachloride is given as 10.35g. The specific heat capacity of carbon tetrachloride is given as 0.85651 J/g°C and the change in temperature is given as 24.3°C. Putting these values into the formula: q = m × C × ΔTq = 10.35 g × 0.85651 J/g°C × 24.3°Cq = 222.92 J. Therefore, 222.92 Joules of heat are required to raise the temperature of a 10.35g sample of carbon tetrachloride from 32.1°c to 56.4°c.

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Answer:

You will have to mix 240 mL of 75% acid with 300 mL of 30% acid to produce 540 mL of 50% acid

Explanation:

The following options correctly describe enolate formation for a ketone such as the one shown are:

a. Deprotonation of the alpha carbon

d. Formation of a nucleophile

For a ketone, the process of enolate formation involves the following options:

a. Deprotonation of the alpha carbon: This option is correct. Enolate formation involves the removal of a proton (deprotonation) from the alpha carbon adjacent to the carbonyl group. The resulting species is called an enolate.

b. Formation of a double bond between the alpha carbon and carbonyl carbon: This option is incorrect. Enolate formation does not involve the direct formation of a double bond between the alpha carbon and the carbonyl carbon. Instead, the enolate is formed as an intermediate, which may subsequently tautomerize to form an enol, where the double bond forms between the alpha carbon and the carbonyl carbon.

c. Loss of a proton from the carbonyl oxygen: This option is incorrect. In the process of enolate formation, a proton is not lost from the carbonyl oxygen. Instead, a proton is removed from the alpha carbon, resulting in the formation of the enolate.

d. Formation of a nucleophile: This option is correct. Enolate formation leads to the creation of a nucleophilic species. The negative charge that develops on the oxygen of the carbonyl group makes it nucleophilic, and the alpha carbon becomes electron-rich and capable of nucleophilic attack.

Therefore, correct options are:

a. Deprotonation of the alpha carbon

d. Formation of a nucleophile

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In a covalent bond between two atoms, the repulsive forces between the two positive nuclei gets cancelled out as the attractive forces between the positive nuclei and the negative electrons is more.

A covalent bond is said to be a bond formed between two atoms by the sharing of equal number of electrons present in both the atoms.

In a covalent bond, the dense electron cloud is concentrated in between the two nuclei of the atoms.

The attractive forces balance out the repulsive forces. So, If any net force is left, the atoms will still accelerate. Therefore, the forces that will pull the two atoms together must be equal to the forces that will push them apart.

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Answer:2

Explanation:

Molecules with many polar covalent bonds are polar and can interact with water.

Polar covalent bonds are chemical bonds in which the electrons are shared unevenly between the atoms. This creates a partial positive charge on one end of the molecule and a partial negative charge on the other end. When a molecule has many polar covalent bonds, it means that it has many regions of partial positive and partial negative charges. These regions of partial charges create a polar molecule, which can interact with water. Water is also a polar molecule, it has a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms. This means that polar molecules can interact with water through hydrogen bonding, which is a type of attractive force between a partial positive charge and a partial negative charge.

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The range of the of the oxidation number of the first transition series is +2 to +6.

Transition elements or transition metals are elements or metals that have partially filled d orbitals.

The first main transition series begins with either;

Thus, the range of the of the oxidation number of the first transition series is +2 to +6.

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Oxaloacetate contains 4 carbons. Acetyl-CoA contains 2 carbons in its acetyl group. Citric acid contains 6 carbons. In the first reaction of the citric acid cycle, acetyl-CoA combines with oxaloacetate to form citrate.

The acetyl group of acetyl-CoA is transferred to oxaloacetate, and a molecule of CoA is released. The resulting citrate molecule has 6 carbons. The citric acid cycle is a series of chemical reactions that occur in the mitochondria of cells. The cycle is responsible for the oxidation of acetyl-CoA, which produces energy in the form of ATP. The cycle also produces NADH and FADH2, which are used in the electron transport chain to produce more ATP. The citric acid cycle is a critical part of cellular respiration, and it is essential for the production of energy.

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The mole fraction of HNO₃ is 0.6765

Mole fraction of HNO₃ can be calculate as follows:

we know that the amount of a constituent (represented in moles), ni, divided by the sum of all the constituents in the mixture (also stated in moles), ntotal, is known as the mole fraction or molar fraction

mole fraction = n/ n total

first we should calculate hw many gram  the solution from the density

assume the volume is 1 L

so.

density = mass solution/ volume solvent

1.42 g/ml = mass/ 100mL

mass= 1490 g

so the mole of the solution is

mole = mass/ mass molar

mole solution = 1490 g / 63 g/ mole = 23.65 mole

Then we can find the mole of HNO₃ from the concentration

molar= moles x volume

16 M = moles x 1 L

moles HNO₃ = 16 moles

thus,

mole fraction = n/ n total

mole fraction = 16/ 23.65 = 0.6765

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Isomers are different compounds that have the same molecular formula.

In chemistry the type of compounds that have the same molecular formula but have a different chemical structure are known as Isomers. The isomers have different chemical and physical properties each other, so they can be considered as a total different compound, this is because they have a different arrangement of its atoms.

the atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.

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Answer:

A body becomes weightless in a zero-gravity scenario and when a force is applied to a body that is equal and opposite to the force of gravity. If the body is falling only under the influence of gravity.

Answer:

A body becomes weightless in a zero-gravity scenario and when a force is applied to a body that is equal and opposite to the force of gravity.If the body is falling only under the influence of gravity.

Answer:

The air pressure in tires increases as the temperature goes up. Scientists have figured out that for every 10 degrees (Fahrenheit) that the temperature rises the tire pressure will increase by one pound per square inch

Explanation:

Answer:

decrease

Explanation:

Answer:

6.408924056 miles/hour.

Explanation:

First we have to convert 247.54 km to miles. The conversion factor will be 1 km = 0.621371 miles. To do this I set up my stoichiometry.

247.54km | 0.621371miles = 153.8141773 miles

                 |  1 km

Now we have 153.8141773 miles per 1 day. The conversion factor will be 1 day = 24 hours.

153.8141773 miles | 1 day       6.408924056 miles/hour.

1 day                      | 24 hours

(if you need to know what I did with the stoichiometry just ask! I'll be happy to help!)

Answer:

It comes from the sun.

Answer:

mSn=0.24375*59=14.38125

Explanation:

nHBr=1.3*0.75=0.975

nSn=1/4nHBR=0.975/4=0.24375

mSn=0.24375*59=14.38125

Answer:

4

Explanation:

Speed=Distance/time, so 20/5 divide time divided by distance. so the answer is 4.

The speed of Haley the hummingbird is 4 m/s.

From the question,

We are to calculate the speed of Haley the hummingbird

Speed is given by the formula

\(Speed =\frac{Distance\ traveled}{Time\ taken}\)

From the given information,

The hummingbird can fly from a pansy flower to a hibiscus flower 20 meters away in 5 seconds.

That is,

The bird can cover a distance of 20 meters in 5 seconds.

Therefore,

Speed of the hummingbird = \(\frac{20}{5}\)

Speed of the hummingbird = 4 m/s

Hence, the speed of Haley the hummingbird is 4 m/s.

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A saturated solution is one that contains all of the solute that may possibly dissolve in it. The greatest quantity of sodium chloride that may dissolve in 100 g of water at 20 oC is 36.0 g.

What is an illustration of a solution?

A homogenous combination of two or more components with particles smaller than 1 nm is referred to as solution. Solutions take a variety of forms, include carbonated water, sugar and salt mixtures, and others.

What exactly are solutions?

a procedure of activity for resolving an issue. a solution to with an issue explanation. more specifically: a collection of variable values that satisfy an equation. an action or a procedure that transforms a material into a solid, liquid, or gas

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Rutherford's scattering experiment demonstrated that the mass of an atom was uniformly distributed throughout its volume this statement is incorrect.

Hence, Option B is correct answer.  

Rutherford's Alpha Scattering Experiment demonstrated that Rutherford bombarded most of the alpha particles passed straight through the gold foil. Rutherford observed that most part of the atom is empty.

The mass of an atom was uniformly distributed throughout its volume this experiment was given by Thomson Model.

Thus from the above conclusion we can say that Rutherford's scattering experiment demonstrated that the mass of an atom was uniformly distributed throughout its volume this statement is incorrect.

Hence, Option B is correct answer.  

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When 29.0 g of \(CH_3OH\)(g) is decomposed by this reaction at constant pressure, the amount of heat transferred is: 114.2 kJ.

To calculate the amount of heat transferred when 29.0 g of \(CH_3OH\)(g) is decomposed by the reaction 2\(CH_3OH\)(g) → 2\(CH_4\)(g) + \(O_2\)(g) with ΔH = +252.8 kJ, follow these steps:

1. Determine the molar mass of CH3OH. The molar mass of \(CH_3OH\) is (12.01 g/mol for C) + (3 x 1.01 g/mol for H) + (16.00 g/mol for O) = 32.04 g/mol.

2. Calculate the moles of \(CH_3OH\) in 29.0 g. Moles = (mass of \(CH_3OH\)) / (molar mass of \(CH_3OH\)) = 29.0 g / 32.04 g/mol = 0.9048 moles.

3. Determine the stoichiometry of the reaction. For every 2 moles of \(CH_3OH\), 252.8 kJ of heat is transferred.

4. Calculate the heat transferred for the given moles of \(CH_3OH\). Heat transferred = (0.9048 moles \(CH_3OH\)) * (252.8 kJ / 2 moles \(CH_3OH\)) = 114.2 kJ.

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Therefore, the amount of heat transferred when 29.0 g of CH3OH(g) is decomposed by this reaction at constant pressure is 228.9 kJ.

To calculate the amount of heat transferred in this reaction, we need to use the equation:

q = nΔH

where q is the amount of heat transferred, n is the amount of substance, and ΔH is the enthalpy change.

First, we need to calculate the amount of substance (in moles) of CH3OH(g) that is decomposed. We can use the molar mass of CH3OH(g) to convert grams to moles:

n = 29.0 g / 32.04 g/mol = 0.905 mol

Next, we can use the coefficients in the balanced equation to determine the amount of substance (in moles) of O2(g) produced:

n(O2) = n(CH3OH) / 2 = 0.4525 mol

Now we can use the equation above to calculate the amount of heat transferred:

q = nΔH = (0.905 mol) (252.8 kJ/mol) = 228.9 kJ

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Answer:

2

Explanation:

Electron

Answer:

When two plates press together and a mountain begins to form, which of the following happens? The plate slowly begins to bend because even though the plate material is hard it can still be bent and folded over a very long period of time.

Answer:

Chlorine (Cl)