Answer:
Brainliest pls
Explanation:
The components potassium and sodium have comparable substance properties since they have a similar number of valence electrons
The answers are the following:
1. <span>1.4 x 10^11 kJ/mol
2. </span><span>9.0 × 10^6 kJ
Therefor I conclude that your answers are correct. </span>
Microscope . Small structure of the cells can look into for a microscope... This part regulates the amount of light on the specimen
I am sure it's the first one.
Friction .......................................................................................