I would think force. Because friction has to have force to work ^-^
Answer:
The desire to continue with your exercise would be the correct answer! :D
B they formed from the dense elements as compared to the others in the solar system
If the same atoms appear on both sides, then it's balanced.
In this reaction, there are 4 Oxygens, 2 Carbons, and 2 Nitrogens on each side. So numerically, <em>it's balanced</em>. But I don't know enough chemistry to say whether the reaction is possible.
