Answer: aging?
Explanation: sorry, i’m not too sure, but that would be my best guess.
I want to say physical change? i’m not quite sure, i hope this helps tho!
Answer:
just replace the 9 mole with 3.68 g of Al .
I think it will help you.
Answer:
a) the atomic number is 15
b) the mass number is 15+16 = 31
c) element is phosphorus
d)Group 15 period 3
<span>Ernest Rutherford was the scientist that developed a model of the atom that looked like a nucleus surrounded by electrons.
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