Answer:
pls snap the question well
Answer:
Let the sum of moments about a reaction point equal to ZERO (ΣM = 0) ...
Let the sum of vertical forces equal to 0 (ΣFy = 0)
Explanation:
Answer:
Na
Explanation:
<u>Reactant side:</u>
1 Na
1 Mg
2 F
<u>Product side:</u>
2 Na
1 Mg
2 F
There is one more Na atom on the product side than the reactant side. To balance this, multiply the Na on the reactant side by 2.
It;s a physical change because the tablet dissolved and it made the water cooler