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Single type of atom builds a single atom
So I believe you are supposed to take notes based on the guiding questions (the questions on the side).
In the most basic way of putting it, bone deterioration. Where bones begin to break down because they don't have calcium to fortify themselves.
N=m/M
so n = 25g/(1.01+19.00)g/mol
n = 25g/20.01g/mol
n = 1.2493
Round to 2 sig figs
So the answer is 1.2 mol
