3 years ago

One of the reasons it is important to keep our water supplies pollution free is potability. Water that is potable is

Physics

2 answers:

Lynna [10]3 years ago

8 0

C)fit to drink.

potability means water that is healthy to drink.

Black_prince [1.1K]3 years ago

6 0

Potable water is Fit to drink. It is both safe and healthy enough for consumer use.

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0.0000076 grams

Explanation:

We're given the half life of Tritium to be 12.3 years. In order to find out the amount of substabce remaining:

Let's first find how many 'half lives' are in 250 years.

$n = \frac{250}{12.3} = 20.325$

Now what is half life? It means the time taken for a given quantity of an element to lose half it's mass.

So in 12.3 years we can find that The amount of 250 g of Tritium will be 250/2 = 125 g. In 24.6 years we'll have 125/2 = 62.5 g

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$m = \frac{original \: amount}{ {2}^{n} }$

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Using this formula we can calculate:

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