Question

Of an initial amount of 3000 g of lead-210, how much will remain in 100 years? Lead-210 decays at a rate of 3.15%/yr. 122.29 (Round to one decimal place as needed.)

Answer 1

Approximately 122.29 grams of lead-210 will remain after 100 years.

Step-by-step explanation:

To calculate how much lead-210 will remain in 100 years, we need to use the decay rate. Lead-210 has a decay rate of 3.15% per year. We can use the formula:

Remaining Mass = Initial Mass * (1 - Decay Rate)^Time

Plugging in the values, we have:

Remaining Mass = 3000 g * (1 - 0.0315)^100

Calculating this, we find that approximately 122.29 grams of lead-210 will remain after 100 years.