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3 years ago

Which medical condition(s) can prevent molecules from entering the cell?

Chemistry

2 answers:

kvasek [131]3 years ago

6 0

Answer:

Explanation:

any type of spreading disease that kills

-BARSIC- [3]3 years ago

5 0

Answer:

The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others. Small molecules that are nonpolar (have no charge) can cross the membrane easily through diffusion, but ions (charged molecules) and larger molecules typically cannot.

Explanation:

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Where did the lighter elements like hydrogen and helium go to when the solar system formed

Veronika [31]

Some of them remained in space, some ended up in the gas giants, Jupiter, Saturn, etc. A good percentage ended up in the sun

4 0

4 years ago

A zinc rod is placed in 0.1 MZnSO4 solution at 298 K. Write the electrode reaction and calculate the potential of the electrode.

yanalaym [24]

Answer: The potential of electrode is -0.79 V

Explanation:

When zinc is dipped in zinc sulfate solution, the electrode formed is $Zn^{2+}(aq.)/Zn(s)$

Reduction reaction follows: $Zn^{2+}(0.1M)+2e^-\rightarrow Zn(s);(E^o_{Zn^{2+}/Zn}=-0.76V)$

To calculate the potential of electrode, we use the equation given by Nernst equation:

$E_{(Zn^{2+}/Zn)}=E^o_{(Zn^{2+}/Zn)}-\frac{0.059}{n}\log \frac{[Zn]}{[Zn^{2+}]}$

where,

$E_{cell}$ = electrode potential of the cell = ?V

$E^o_{cell}$ = standard electrode potential of the cell = -0.76 V

n = number of electrons exchanged = 2

$[Zn]=1M$ (concentration of pure solids are taken as 1)

$[Zn^{2+}]=0.1M$

Putting values in above equation, we get:

$E_{cell}=-0.76-\frac{0.059}{2}\times \log(\frac{1}{0.1})\\\\E_{cell}=-0.79V$

Hence, the potential of electrode is -0.79 V

4 0

3 years ago

Which type of energy in gasoline is transformed into mechanical energy and a motorcycle engine

vichka [17]

"Chemical Energy" in gasoline is transformed into mechanical energy and a motorcycle engine

Hope this helps!

7 0

4 years ago

Need help fast

vovangra [49]

Answer:

Keep the temperature at 20°C. Stir the solution

Explanation:

3 0

3 years ago

What are two parts of the atomic theory of atoms?

MissTica

Answer:

The first part of his theory states that all matter is made of atoms, which are indivisible. The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms.

Explanation:

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4 0

4 years ago