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SashulF [63]
3 years ago
6

During an experiment, a student moves a cell from pure water to salted water. What will most likely happen to the cell?

Physics
2 answers:
Alona [7]3 years ago
8 0

Answer:

Explanation:

Osmosis is a phenomenon that occurs when there are two solutions that have different concentrations. In this case, the water or solvent moves through the semipermeable membrane in order to balance both concentrations.

When moving a cell of pure water towards salt water, this is the phenomenon that occurs. The difference in pressure that will be created on both sides of the membrane is what is called osmotic pressure.

The water in the cells moves towards the highest concentration of salt.

In this process the solvent or the substance to be dissolved tends to cross the semipermeable membrane, which has pores of molecular dimension that do not allow the passage of solute molecules, but the solvent.

In this way, the solution with lower concentration increases the amount of that element and in the other decreases until it is equalized. This effect continues until the hydrostatic pressure balances this trend.

maksim [4K]3 years ago
4 0
The cell enters a hypertonic solution where the cell shrinks. This is because water is diffused from insidd of the cell, to outside of the cell inorder to reach equilibrium. Because its solute is salt water, the cell has a semipermeable membrane where it wont allow thd salt water solution to diffuse into the cell.
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Answer:

DMM should be placed in the series combination with the circuit.

Explanation:

DMM is the digital multi meter. It can measure the voltage, current and resistance at a time.

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4 0
3 years ago
How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 23.0 cm in diameter to p
lyudmila [28]

Answer:

10573375000

216.57162\ N/C

Explanation:

k = Coulomb constant = 8.99\times 10^{9}\ Nm^2/C^2

r = Distance = \dfrac{d}{2}=\dfrac{23}{2}=11.5\ cm

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Electric field is given by

E=\dfrac{kq}{r^2}\\\Rightarrow q=\dfrac{Er^2}{k}\\\Rightarrow q=\dfrac{1150\times 0.115^2}{8.99\times 10^9}\\\Rightarrow q=1.69174\times 10^{-9}\ C

Number of electrons is given by

n=\dfrac{1.69174\times 10^{-9}}{1.6\times 10^{-19}}\\\Rightarrow n=10573375000

Number of excess electrons is 10573375000

r = 0.115+0.15 = 0.265 m

E=\dfrac{kq}{r^2}\\\Rightarrow E=\dfrac{8.99\times 10^9\times 1.69174\times 10^{-9}}{0.265^2}\\\Rightarrow E=216.57162\ N/C

The electric field is 216.57162\ N/C

4 0
3 years ago
What is the pH of neutral substance?
Lunna [17]

Answer:

7

Explanation:

A substance that is neither acidic nor basic is neutral. The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral.

8 0
4 years ago
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3 0
4 years ago
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Musya8 [376]

Answer:

a \approx 10.6 m/s²

Explanation:

Since F = ma (Force = mass * acceleration), acceleration would be...

a = F/m

a = 302 N/28.6

a \approx 10.6 m/s²

8 0
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