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dexar [7]
3 years ago
8

Which solution is unsaturated? solution Asolution Bsolution Csolution D​

Chemistry
1 answer:
Rama09 [41]3 years ago
4 0
<h3>Answer:</h3>

Solution A

<h3>Explanation:</h3>

Saturation describes the amount of solute that a solvent has or can be absorbed/dissolved.

Types of Saturation

There are 3 different descriptions that can be used to explain how much solute has been dissolved.

  • Undersaturated - Undersaturated solutions have the ability to hold more solute. This means that the solubility has not been reached yet.
  • Saturated - Saturated solutions hold as much solute as the solubility allows. This means that the amount of solute added to the solution is equal to the solubility.
  • Supersaturated - Supersaturated solutions hold more solute than the solubility allows for. This means that the amount of solute added is greater than the solubility.

Finding Unsaturated

Out of the 4 options given, only in option A is the amount of solute less than the solubility. In the other options, the amount of solute is either equal to or greater than the solubility.

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Answer: A) 0.0480 grams and B) 56.16 years.

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The formula we use for solving this type of problem is:

\frac{N}{N_0}=(\frac{1}{2})^n

where, N_0 is the initial amount and N is the remaining amount of radioactive substance and n is the number of half lives.

n=T/t_1_/_2

where, T is the time and t_1_/_2 is half life.

A) from given data, N_0 = 2 g

T = 70 years

t_1_/_2 = 13 years

N= ?

n=\frac{70years}{13years}

n = 5.38

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N = 0.1 g

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Let's first calculate the value of n for this.

\frac{0.1}{2}=(\frac{1}{2})^n

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Taking log to both sides:

log0.05=nlog0.5

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n=\frac{1.3010}{0.3010}

n = 4.32

Half life is 13 years, so we can calculate the time as:

n=T/t_1_/_2

T=n*t_1_/_2

T=4.32*13years

T = 56.16 years

So, it will take 56.16 years for the radioactive substance to decay from 2 g to 0.1 g.

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