Answer:
17. tie hair up
wear goggles
18. i don't know
19. you light it on the side of the box
20. it should be orange because that is the safest.
21. you turn down the electricity thing
Answer:
hope it helped you
Explanation:
3 atoms of nitrogen and 4 atoms of hydrogen in each molecule
The answer is 7/10 but if you want it in decimal for it is 0.7