An living creature which is not a human
A living organism that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli.
you take the atomic mass of calcium over the atomic mass of
and multiply it by 100 to get the percentage.
the mass of
is 40.078 g; the mass of
is 12.01 g, and the mass of
is 47.997 g (
add all the masses together to get a total mass of 100.085 g.
0.4004 or 40.04 %
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