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antiseptic1488 [7]

4 years ago

5

Does the following statement describe a function of DNA, a function of RNA, a function of both DNA and RNA, or a function of nei

ther DNA nor RNA? It makes up a main part of the ribosome, where amino acids are attached to one another to make a protein.
A- DNA

B- RNA

C- both DNA and RNA

D- neither DNA nor RNA

1 answer:

BabaBlast [244]4 years ago

5 0

This function describes only in RNA

In short, Your Answer would be Option B

Hope this helps!

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The enthalpy of vaporization of a certain liquid is found to be 14.4 kJ mol-1 at 180 K, its normal boiling point. The molar volu

Sedaia [141]

Answer :

(a) The value of $\frac{dP}{dT}$ is $5.56\times 10^3Pa/K$

(b) The percentage error will be 2.5 %

Explanation :

(a) First we have to calculate the $V_{vap}$ .

$V_{vap}=V_2-V_1$

$V_1$ = volume of liquid = $115cm^3mol^{1-}=115\times 10^{-6}m^3mol^{1-}$

$V_1$ = volume of vapor = $14.5dm^3mol^{1-}=14.5\times 10^{-3}m^3mol^{1-}$

$V_{vap}=V_2-V_1$

$V_{vap}=(14.5\times 10^{-3}m^3mol^{1-})-(115\times 10^{-6}m^3mol^{1-})$

$V_{vap}=1.44\times 10^{-2}m^3mol^{1-}$

Now we have to calculate the value of $\frac{dP}{dT}$

The Clausius- Clapeyron equation is :

$\frac{dP}{dT}=\frac{\Delta H_{vap}}{T\Delta V_{vap}}$

where,

T = temperature = 180 K

$\Delta H_{vap}$ = heat of vaporization = 14.4 kJ/mole = 14400 J/mole

$V_{vap}=1.44\times 10^{-2}m^3mol^{1-}$

Now put all the given values in the above formula, we get:

$\frac{dP}{dT}=\frac{(14400J/mole)}{(180K)\times (1.44\times 10^{-2}m^3mol^{1-})}\times \frac{1Pa}{1J/m^3}$

$\frac{dP}{dT}=5.56\times 10^3Pa/K$

(b) Now we have to calculate the percentage error.

Now we have to calculate the value of $\frac{dP}{dT}$ at normal boiling point.

The Clausius- Clapeyron equation is :

$\frac{dP}{dT}=\frac{\Delta H_{vap}}{T\Delta V_{vap}}$

As we know that : PV = nRT

So,

$\frac{dP}{dT}=\frac{P\Delta H_{vap}}{RT^2}$

where,

R = gas constant = 8.314 J/K.mol

T = temperature = 180 K

$\Delta H_{vap}$ = heat of vaporization = 14.4 kJ/mole = 14400 J/mole

P = pressure at normal boiling point = 101325 Pa

Now put all the given values in the above formula, we get:

$\frac{dP}{dT}=\frac{(101325Pa}\times (14400J/mole)}{(8.314J/K.mol)\times (180K)^2}$

$\frac{dP}{dT}=5.42\times 10^3Pa/K$

Now we have to determine percentage error.

$\%\text{ error}=\frac{(5.56\times 10^3Pa/K)-(5.42\times 10^3Pa/K)}{5.56\times 10^3Pa/K}\times 100$

$\%\text{ error}=2.5\%$

Therefore, the percentage error will be 2.5 %

4 0

4 years ago

What makes a charged object attract an uncharged object?

Ratling [72]

Answer:

its c I think C)

The reason for this is due to the phenomenon called "Charging by Induction". What that means is that when something with a charge, for example a negative charge, is brought near an uncharged one, it induces the opposite charge onto it (positive in this case) and therefore since opposites attract, it attracts it.

The reason for this is that since, just like a positive magnet rejects and pushed away like charges, the electrons hold a negative charge, they push away any electrons that may be in the neutrally charged item causing only protons to be left, thus creating an oppositely charged object. Or vice versa.

So whatever charge the object has, it induces the opposite charge into the uncharged object, causing the charges to move only in the uncharged one.

Explanation:

7 0

3 years ago

Using the accepted value for the volume of 1 gram of water at the temperature of the room that you reported above, what is the a

inessss [21]

Write procedural steps that allow you to demonstrate the sun's role in the water cycle using common material - for each explain what you are modeling and how the materials you have chosen represent nature.

Using the accepted value for the volume of 1 gram of water at the temperature of the room that you reported above, what is the accepted value for the density of water

3 0

3 years ago

Amoxicillin Suspension 125 mg/ 5 ml is 125 mg of Amoxicillin per 5 ml of suspension is an example of weight to ________.

kkurt [141]

Answer : Amoxicillin Suspension 125 mg/ 5 ml is 125 mg of Amoxicillin per 5 ml of suspension is an example of weight to volume.

Explanation :

Weight by volume (w/v) means that the mass of solute present in 100 mL volume of solution.

Weight by weight (w/w) means that the mass of solute present in 100 gram of solution.

Volume by volume (v/v) means that the volume of solute present in 100 mL volume of solution.

As per question, amoxicillin suspension is, 125 mg/ 5 ml that means 125 mg of Amoxicillin present in 5 mL of suspension. So, it is an example of weight to volume.

Hence, it is an example of weight to volume.

8 0

4 years ago

Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pr

Delvig [45]

<h2>Hello!</h2>

The answer is: Charle's Law.

<h2>Why?</h2>

The law that states that the volume and absolute temperature of a fixed quantity of gas (ideal gas) are proportional under constant pressure is the Charle's Law, also known as the law of volumes.

The law describes how a gas kept under constant pressure tends to expand when the temperature increases and it's described by the following equation:

$\frac{V}{T}=k$

Where,

$V=Volume\\T=Temperature\\k=constant$

Also, to describe the relationship between two differents volumes at different temperatures, we have:

$\frac{V_{i}}{T_{i}}=\frac{V_{f}}{T_{f}}$

Where,

$V_{i}=InitialVolume\\T_{i}=InitialTemperature\\V_{f}=FinalVolume\\T_{f}=FinalTemperature$

Have a nice day!

8 0

4 years ago

Read 2 more answers