Answer:
d
They do not depend on the amount of substance you have.
The digestive system I think, I could be wrong but that’s what I think
B. The periodic law
The periods that make up the periodic table were conceived by Mendeleev in 1869, not Dalton
Answer:

Explanation:
Dimensional analysis uses the fact that any number can be multiplied by one without changing its value.
You want to convert hectometres to metres, so you multiply the hectometres by a conversion factor that equals one.
For example, you know that hecto means "× 10², so
1 hm = 100 m
If we divide each side by 1 hm, we get 1 = 100 m/1 hm.
If we divide each side by 100 m, we get 1 hm/100 m = 1.
So, we can use either (100 m/1 hm) or (1 hm/100 m) as a conversion factor, because each fraction equals one.
We choose the former, because it has the desired units on top.
The calculation becomes

You so you do 5x5x10 and that equals 100. Hope this helped(: