<p>How would you do the 2 half-life problems below?
I have the use the first order rate equation…but i have no idea what i’m doing.</p>
<ol>
<li><p>Consider a certain type of nuclueus that has a half-life of 32 min. Calculate the time required for 51% of the nuclides to decompose.
Answer choices: 31 min, 21 min, 48min, 41min, 33min</p></li>
<li><p>The Br-82 nucleus has a half-life of about 1.0 x 10^3 minutes. If you wanted 1.6 g of Br-82 and the deliverty time was three days, about how much NaBr should you order (assuming all of the Br in the NaBr was Br-82)?
Answer choices: 1.6g, 3.2g, 3.7g, 41g, 7.1g</p></li>
</ol>
<p>Thanks :)</p>