This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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You're on a roll — here are the solutions for these questions: 14. Find the value of 2 in 4203_five Step 1: Understand place values in base 5. In base 5, the place values are powers of 5, starting from the right: 5^0 (ones place) 5^1 (fives place) 5^2 (twenty-fives place) 5^3 (one hundred twenty-fives place) Step 2: Identify the position of the digit 2. In the number 4203_five, the digit 2 is in the 5^2 place. Step 3: Calculate the value of the digit 2. The value of 2 is 2 × 5^2. 2 × 5^2 = 2 × 25 = 50 50 15. The Executive meeting for DFCU Bank ended at 1:25 pm. If it lasted for 3 hours and 30 minutes, when did it start? Step 1: Convert the end time to 24-hour format. 1:25 pm is 13:25 in 24-hour format. Step 2: Subtract the duration of the meeting from the end time. First, subtract the hours: 13:25 - 3 hours = 10:25 Step 3: Subtract the minutes. We need to subtract 30 minutes from 10:25. Since 25 minutes is less than 30 minutes, we borrow 1 hour (60 minutes) from the hours. 10 hours becomes 9 hours, and 25 minutes becomes 25 + 60 = 85 minutes. Now subtract 30 minutes: 9:85 - 30 minutes = 9:55 Step 4: Convert the start time back to 12-hour format. 9:55 in 24-hour format is 9:55 am. 9:55 am 16. Solve the equation 2(k + 1) = 10 Step 1: Divide both sides of the equation by 2. (2(k + 1))/(2) = (10)/(2) k + 1 = 5 Step 2: Subtract 1 from both sides of the equation to isolate k. k + 1 - 1 = 5 - 1 k = 4 4 What's next?