To learn more about the genetic material of plant and animal cells, where would a person look?

Chemistry

1 answer:

Agata [3.3K]3 years ago

6 0

The person would look B) in the nucleus.

Hope this helps!

-Payshence xoxo

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Which solution has the lowest freezing point?

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Correct Answer: Option 3 i.e. 30 g of KI dissolved in 100 g of water.

Reason:
Depression in freezing point is a colligative property and it is directly proportional to molality of solution.

Molality of solution is mathematically expressed as,
Molality = $\frac{\text{Number of moles}}{\text{Weight of solvent (Kg)}}$ 

In case of option 1 and 2, molality of solution is 0.602 m. For option 3, molality of solution is 1.807 m, while in case of option 4, molality of solution is 1.205 m.

Thus, second solution (option 2) has highest concentration (in terms of molality). Hence, it will have lowest freezing point

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Boyle's law states that pressure is inversely proportional to volume of gas at constant temperature
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P1V1 = P2V2
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substituting these values in the equation
1.25 atm x 0.75 L = P x 1.1 L
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final pressure is B) 0.85 atm

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