The molecular formula for the structure show below is: 1. CF
2. CF2
3. CF3
4. CF4

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

This drawing shows a human body system. what is the primary function of this body system?

What is the average rate of the reaction between 10 and 20 s?