The answer is B the silicon
Answer:
PHYSICAL CHANGE
Explanation:
It doesnt affect the arrangment of the atoms therefore not changinh the substance its self
The answer is true. i’m sorry if i get this wrong.
Answer : 2Mg
Explanation: you have to set up a cross-multiply-divide formula for example 2Mg=2O
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2.2. 2.2
You have 4.5 you need 2.2 which makes Mg the limiting reactant