Answer:
Given Elements are
- Ferrus(Fe)
- Zinc(Zinc)
- Sodium (Na)
- Copper (Cu)
- Silver(Ag)
<h3>Decreasing Order:-</h3>
Na>Zn>Fe>Cu>Ag
<h3><u>Expla</u><u>nation</u><u>:</u><u>-</u></h3>
- Here is the reactivity series of elements to let you understand better .

Answer:
i believe it is lithium cause its is used for batteries and potassium is in like foods right? lmk if im wrong
and potassium helps to protect from radiation
Explanation:
Answer:
197 + (35.5×3) = 303.5
Explanation:
relative formula mass is the sum of the relative atomic masses of the atoms in the formula ( AuCl3 )
Independent would be the amount of sugar given and the dependent would be the amount of cavities
Scientists have control groups so they can have evidence to show the difference between that one and the experimental ones.
And the independent variable is the one that changes because with out it changing you wouldn't get different results.
I could be wrong tho sorryyy! but i hope this helps