diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index b8b49fa5e..297674489 100755
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -64,7 +64,7 @@
             }
           }
         ],
-        "currentTab": 3
+        "currentTab": 4
       }
     ],
     "direction": "vertical"
@@ -194,7 +194,7 @@
       "obsidian-full-calendar:Open Full Calendar": false
     }
   },
-  "active": "8bf53bf6649cb555",
+  "active": "4f3f806fef2c3a30",
   "lastOpenFiles": [
     "3-99 Research/99. Getting Used to Obsidian/Markdown Cheat Sheet.md",
     "300s School/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-03 Homework 1.md",
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 c26658ed7..8c8116b84 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	
@@ -2,7 +2,7 @@
 title: Homework 1
 allDay: false
 startTime: 11:30
-endTime: 12:30
+endTime: 15:30
 date: 2024-09-03
 completed: null
 type: single
@@ -30,6 +30,7 @@ $\frac{ ^{59}\text{Co}}{^{12}\text{C}} = \frac{58.93319}{12.00000} = 4.91110 \te
 $10 \text{g} \times \frac{1 \text{ mol } ^{12}\text{C}}{12 \text{g}} \times \frac{0.6022045 \times 10^{24} \text{ atoms}}{1 \text{ mol } ^{12}\text{C}} = 5.0184 \times 10^{23} \text{ atoms of } ^{12} \text{C}$
 **4. A beaker contains 50 g of ordinary water.**
 	*a. How many moles of water are present?*
+	$10 \text{g} \times \frac{1 \text{ mol } ^{12}\text{C}}{12 \text{g}} \times \frac{0.6022045 \times 10^{24} \text{ atoms}}{1 \text{ mol } ^{12}\text{C}} = 5.0184 \times 10^{23} \text{ atoms of } ^{12} \text{C}$
 	*b. How many hydrogen atoms?*
 	*c. How many deuterium atoms?*
 **5. Find the mass of an atom of $^{235}\text{U}$**