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zlopas [31]
2 years ago
9

Why did the outside of the bag get wet? From ice melting in the bag

Chemistry
1 answer:
dezoksy [38]2 years ago
7 0
Because the water seeped through the bag (? I don’t know the context correct me if I’m wrong)
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The size of camphor kept in store house gradually decrease in size after few а days? ​
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Because it goes through the process of sublimation.

Explanation:

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2 years ago
The nucleus of an atom is _______________________ charged.
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positivly charged

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What is the molality of a solution in which 0.42 moles aluminum chloride has been dissolved in 4200 water ?
madreJ [45]

Answer:

0.1 M

<h3>Explanation:</h3>
  • Molarity refers to the concentration of a solution in moles per liter.
  • It is calculated by dividing the number of moles of solute by the volume of solvent;
  • Molarity = Moles of the solute ÷ Volume of the solvent

<u>In this case, we are given;</u>

  • Number of moles of the solute, NH₄Cl as 0.42 moles
  • Volume of the solvent, water as 4200 mL or 4.2 L

Therefore;

Molarity = 0.42 moles ÷ 4.2 L

            = 0.1 mol/L or 0.1 M

Thus, the molarity of the solution will be 0.1 M

7 0
3 years ago
Which statements about the operation of an automated micropipettor are true? The volume dial has already been set, do not alter
yanalaym [24]

Answer:

The correct statement is that the point of initial resistance is the level of depression that will fill the pipette with the desired volume of solution.

Explanation:

The pipette can be otherwise stored vertically or horizontally, this has nothing to do with the operation, and before the operation, the dial needs to be set. Also, the plastic pipette tip should not be ejected at all, thus, no new disposable plastic tip is required for each sample.

The correct statement is that the point of initial resistance is the level of depression that will fill the pipette with the desired volume of solution.

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3 years ago
How is a compound different from a mixture? *
andreyandreev [35.5K]

Answer:

a.  mixtures are created through physical changes and compounds are created through chemical reactions

Explanation:

5 0
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