Number 9 adding oil lubricates the chain making it easier to pedal. Also the oil prevents rusting
A nanoparticle is larger than an atom. A nanoparticle is usually made from a few hundred atoms. These particles range from 1 nanometers to 100 nanometers. On the other hand an atom ranges from 0.1 nanometers to 105 nanometers. Using the sizes above, one can clearly see and understand that an atom is smaller.
You kind of need to show more, but the independent variable would be something that you are changing to then measure the reaction, like the time left in for example.
3 minutes are left (16-13=3)
It is 116.0206134 I guess
