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Pavel [41]
3 years ago
15

What are the three challenges of a cell?

Chemistry
1 answer:
Zolol [24]3 years ago
3 0
<span>The cell must exchange materials with the environment across the surface membrane. An increase in size will result in a relatively greater increase in volume and mass than in surface area, so that the cell will lose effective exchange capacity. 

</span>
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Which of the following techniques is most appropriate for the recovery of solid KNO3 from an aqueous solution of KNO3?
Oxana [17]

Answer: option E. Evaporation to dryness

Explanation:

3 0
3 years ago
What was Antoine Henri Becquerel studying when he discovered radioactivity?
ladessa [460]

Answer:

Becquerel was studying the properties of X-Rays when he discovered radioactivity. His original theory was that X- Rays arose from uranium absorbing...

Explanation:

3 0
3 years ago
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the f
deff fn [24]

Explanation:

Entropy means the amount of randomness present within the molecules of the body of a substance.

Relation between entropy and microstate is as follows.

           S = K_{b} \times ln \Omega

where,      S = entropy

             K_{b} = Boltzmann constant

             \Omega = number of microstates

This equation only holds good when the system is neither losing or gaining energy. And, in the given situation we assume that the system is neither gaining or losing energy.

Also, let us assume that \Omega = 1, and \Omega' = 0.833

Therefore, change in entropy will be calculated as follows.

     \Delta S = K_{b} \times ln \Omega' - K_{b} \times ln \Omega

                 = 1.38 \times 10^{-23} \times ln(0.833) - 1.38 \times 10^{-23} \times \times ln(1)

                 = 1.38 \times 10^{-23} \times (-0.182)

                 = -0.251 \times 10^{-23}

or,             = -2.51 \times 10^{-24}

Thus, we can conclude that the entropy change for a particle in the given system is -2.51 \times 10^{-24} J/K particle.

8 0
3 years ago
Which state borders California now México nevada and Utah?
vladimir1956 [14]
Arizona
It is surrounded by California, New Mexico, Nevada, Utah, and Mexico
3 0
3 years ago
Read 2 more answers
24
sveticcg [70]

Answer:

the answer is b

Explanation:

7 0
3 years ago
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