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Inga [223]
3 years ago
10

he solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane i

s permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.4 M glucose and 0.5 M sodium chloride (NaCl), and side B is filled with a solution containing 0.8 M glucose and 0.4 M sodium chloride. Initially, the volume in both arms is the same.
Chemistry
1 answer:
GalinKa [24]3 years ago
3 0

If we examine after 3 days, there will be a decrease in the concentration of NaCl and a decrease in the water level.  

<u>Explanation:</u>

  • If we inspect the following 3 days, there'll be a reduction inside the convergence of NaCl and a lessening inside the water level. This focus is diminished in 2 different ways, by expanding the solute or diminishing the water.
  • Expanding the solute will build the arrangement's focus. This should be possible by just including a greater amount of your compound into the arrangement and dissolving it. It may not help in case you're utilizing a watery arrangement that is as of now disintegrated in water.

You can utilize a procedure called dialysis to diminish the water in an solution.

  • Spot your answer in a dialysis pack that is shaped of semipermeable substance. Presently place the pack in an answer which has a high grouping of a particle. Accordingly, water will be kept concealed separately from the pack through the semi-penetrable film by hurrying out of the sack to the arrangement.
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describes a type of reaction in which negative ions in two compounds switch places , forming two new compounds
Nadusha1986 [10]

Answer:

A double displacement reaction or double replacement reaction.

Explanation:

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3 years ago
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3 years ago
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A scientist measures the standard enthalpy change for the following reaction to be 67.9 kJ:
bekas [8.4K]

Answer: The standard enthalpy of formation  of H_2O(g) is  -252.1 kJ/mol.

Explanation:

The balanced chemical reaction is,

Fe_2O_3(s)+3H_2(g)\rightarrow 2Fe(s)+3H_2O(g)

The expression for enthalpy change is,

\Delta H=[n\times H_f_{products}]-[n\times H_f_{reactantss}]

Putting the values we get :

\Delta H=[2\times H_f{Fe}+3\times H_f{H_2O}]-[1\times H_f{Fe_2O_3}+3\times H_f{H_2}]

67.9kJ=[(2\times 0)+(3\times H_f{H_2O})]-[(1\times -824.2kJ/mol)+3\times 0kJ/mol)]

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Thus standard enthalpy of formation  of H_2O(g) is  -252.1 kJ/mol.

3 0
3 years ago
The options are: ( it can’t be repeated )
Artyom0805 [142]

Answer:

3- gamma radiation

Explanation:

Hello,

In the above question, 4 of the options are related to polymerization which are

1. Synthetic polymer

2. Natural polymer

3. Condensation polymerization

4. Addition polymerization.

The first two options are types of polymer that exists while the last two are polymerization techniques.

The odd option here which is "gamma radiation" is a particle which is emitted from radioactive substances during decay. It has no mass and no charge but it is highly penetrating and dangerous to human health.

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Synthetic polymers are also known as man made polymers and they exist around us because they're present in materials which we use everyday. An example is polyethylene, nylon-6,6 etc

Natural polymers are compounds which are polymeric in nature (compounds catenating to form a complex molecule). Natrual occurring polymers can be found in proteins and some lipids.

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Each carbon atom of benzene is involved in two ________
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Benzene is a combination of carbon and hydrogen atoms. The hybridization is sp2 type. During the hybridization of benzene, each carbon atom forms different bonds with two other similar carbon atoms instead of just one.

hope it helps!

please mark as the brainliest!

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3 years ago
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