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3 years ago

If a red blood cell is placed in a 0.5 salt solution what will occur

1 answer:

4 0

The red blood cell will shrink.
In salt solution, the water potential is a lot lower than the cell cytoplasm. In that way, water molecules will flow from the inside of the cell to the salt solution by osmosis. The red blood cell will loose so much water that it shrinks.
But we don't have to worry about that because this won't occur inside our body, since there is mechanism in our body that regulates the concentration of blood.

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. Name the solute and solvent in the following: a. 14-karat gold b. corn syrup c. carbonated, or sparkling, water

Elena L [17]

Answer:

a) gold-solvent

silver+ copper-solute

b) solvent- water

solute- sugar

c) solute- CO2

solvent- H2O

8 0

3 years ago

Calculate the value of ka for acetylsalicylic acid

lianna [129]

The value of Ka for acetylsalicylic acid will be calculated as Ka=(x+a)²/x.

Ka is known by the name of acid dissociation constant and for weak acid HA at equilibrium Ka will be calculated as:

Ka = [H⁺][A⁻] / [HA]

Chemical equation with ICE table for the acetylsalicylic acid will be shown as:

C₉H₈O₄(aq) + H₂O(l) ⇄ C₉H₇O₄(aq) + H₃O⁺(aq)

Initial: x 0 0

Change: -a +a +a

Equilibrium: x-a x+a x+a

So, Ka for acetylsalicylic acid will be calculated by putting values on the above equation as:

Ka = [x+a][x+a] / [x-a]

Value of a is negligible as compared to the value of x of acetylsalicylic acid so the term x-a becomes x and equation will be written as:

Ka = (x+a)² / x

By knowing the all values of concentration we can calculate the value of Ka.

Hence Ka value for acetylsalicylic acid will be calculated by using the formula as Ka = (x+a)² / x.

To know more about Ka, visit the below link:

brainly.com/question/26998

#SPJ4

5 0

2 years ago

The pressure and temperature inside a bike tires 10 ATM and 10 K receptively. What will the pressure be come in the tire when th

pishuonlain [190]

Answer:

P = 20atm

Explanation:

P1 = 10atm

T1 = 10K

P2 = ?

T2 = 20K

This question requires the use of pressure law which states that the pressure of a fixed mass of gas is directly proportional to its temperature provided its volume remains constant

Mathematically,

P = kT, k = P / T

P1 / T1 = P2 / T2 = P3 / T3=........=Pn / Tn

P1 / T1 = P2 / T2

P2 = (P1 × T2) / T1

P2 = (10 × 20) / 10

P2 = 20atm

The final pressure of the gas is 20atm

4 0

3 years ago

What causes water to become denser when it is carried to the poles by surface currents??

rewona [7]

Answer: Decreased temperatures and increased salinity. Colder water is denser than warm water and the higher the salinity of water the denser it is.

4 0

4 years ago

A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spheric

Luba_88 [7]

Complete Question

A marine biologist is preparing a deep-sea submersible for a dive. The sub stores breathing air under high pressure in a spherical air tank that measures 74.0 wide. The biologist estimates she will need 2600 L of air for the dive. Calculate the pressure to which this volume of air must be compressed in order to fit into the air tank. Write your answer in atmospheres. Round your answer to significant digits.

Answer:

The pressure required is $P_2= 12.2 \ atm$