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lesantik [10]
3 years ago
11

Any molecule within a cell that has a uracil group will also contain

Chemistry
2 answers:
Gwar [14]3 years ago
7 0

Answer:

A

Explanation:

pretty sure..

Iteru [2.4K]3 years ago
3 0

Answer:

Either c or d.

Explanation:

Sorry probs not alot of help o.o

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Is there more or less air near sea level
vampirchik [111]

there is more air near sea level

7 0
3 years ago
The standard free energy of activation of a reaction A is 81.9 kJ mol–1 (19.6 kcal mol–1) at 298 K. Reaction B is one million ti
klasskru [66]

Answer:

54.9 kJ/mol

Explanation:

The relation between the activation energy (Ea) and the rate constant (k) is given by the Arrhenius equation.

k=A.e^{-Ea/RT}

where,

A is a collision factor

R is the ideal gas constant

T is the absolute temperature

Reaction B is one million times faster than reaction A at the same temperature. So k_{B}=10^{6} k_{A}.

Then,

k_{B}=10^{6} k_{A}\\A.e^{-Ea_{B}/RT}=10^{6}A.e^{-Ea_{A}/RT}\\e^{-Ea_{B}/RT}=10^{6}e^{-Ea_{A}/RT}\\ln(e^{-Ea_{B}/RT})=ln(10^{6}e^{-Ea_{A}/RT})\\\frac{-Ea_{B}}{RT} =ln10^{6} -\frac{Ea_{A}}{RT} \\Ea_{B}=(ln10^{6} -\frac{Ea_{A}}{RT}).(-RT)=(ln10^{6}-\frac{89.1kJ/mol}{(8.314\times 10^{-3} kJ/mol.K).298K} ).(-8.314\times 10^{-3} \frac{kJ}{mol.K}.298K )=54.9kJ/mol

8 0
3 years ago
A sample of oxygen gas at a pressure of 690 mmHg and a temperature of 32°C occupies a volume of 14.2 L if the gas is cooled at c
Diano4ka-milaya [45]

Answer:

12.66 L

Explanation:

- Used combined gas law formula

- Change C to K

- Rearrange formula to fit your values

- If you would like further explanation or want to learn how to do these please let me know. Hope this helped!

5 0
4 years ago
What is the principal reason we must consider the uncertainty principle when discussing electrons and other subatomic particles
Pie
Here is the correct answer of the given question above. The principal reason that we must consider the uncertainty principle when discussing electrons and other subatomic particles, but not when discussing our macroscopic world is that photons of only certain allowed frequencies can be absorbed or emitted as the electron changes energy state. Hope this answer helps.
3 0
3 years ago
Which are examples of dynamic equilibrium? Check all that apply.
Ivan
B, D, E 
<span>A person's bank account balance remains constant because income and expenses are equal.

</span>When humidity is high, the rate at which water evaporates from the surface of a puddle is the same as the rate at which water vapor condenses from the air, so the puddle's size does not change.

Sodium moves between many different compounds during chemical reactions on Earth, but the total amount of sodium on Earth is constant.

3 0
4 years ago
Read 2 more answers
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