From a7b8daf0d003c28bcae29535caa8e95329b452d4 Mon Sep 17 00:00:00 2001 From: Dane Sabo Date: Tue, 3 Sep 2024 12:28:51 -0400 Subject: [PATCH] vault backup: 2024-09-03 12:28:51 --- .../2024-09-03 Homework 1.md | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/300s School/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-03 Homework 1.md b/300s School/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-03 Homework 1.md index 28feb1e9f..c26658ed7 100644 --- a/300s School/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-03 Homework 1.md +++ b/300s School/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-03 Homework 1.md @@ -27,3 +27,24 @@ Complete the problems below being sure to show your work. If you need to lookup $\frac{ ^{59}\text{Co}}{^{12}\text{C}} = \frac{58.93319}{12.00000} = 4.91110 \text{ times larger}$ **3. How many atoms are there in 10g of $^{12}\text{C}$?** +$10 \text{g} \times \frac{1 \text{ mol } ^{12}\text{C}}{12 \text{g}} \times \frac{0.6022045 \times 10^{24} \text{ atoms}}{1 \text{ mol } ^{12}\text{C}} = 5.0184 \times 10^{23} \text{ atoms of } ^{12} \text{C}$ +**4. A beaker contains 50 g of ordinary water.** + *a. How many moles of water are present?* + *b. How many hydrogen atoms?* + *c. How many deuterium atoms?* +**5. Find the mass of an atom of $^{235}\text{U}$** + *a. in amu;* + *b. in grams.* +**6. The complete combustion of 1 kg of bituminous coal releases about $3\times 10^7 \text{J}$ in heat energy. The conversion of 1 g of mass into energy is equivalent to the burning of how much coal?** +**7. Tritium ($^3\text{H}$) decays by negative beta decay with a half-life of 12.26 years. The atomic weight of $^3\text{H}$ is 3.016.** + *a. To what nucleus does $^3\text{H}$ decay?* + *b. What is the mass in grams of 1 mCi of tritium?* +**8. Approximately what mass of $^{90}\text{Sr}$ (T-1/2 = 28.8 years) has the same activity as 1g of $^{60}\text{Co}$ (T-1/2 = 5.26 years)?** +**9. Using the chart of the nuclides, complete the following reactions. If a daughter nucleus is radioactive, indicate the complete decay chain:** + + + + + + +