How many 204pb atoms are present in a piece of lead weighing 230 mg ? the percent natural abundance of 204pb is 1.4%?

- of Pb-204.

Solution:- From given info, the percent natural abundance of Pb-204 is 1.4%. It means, 1.4 grams of Pb-204 are present in 100 grams sample. With the help of this, we could calculate the amount of Pb-204 present in 230 mg that is 0.23 grams sample as:

= 0.00322 g of Pb-204

Let's convert grams to moles and then atoms as:

= of Pb-204

So, there would be of Pb-204 present in the sample.

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