Amineral sample is obtained from a region of the country that has high arsenic contamination. an elemental analysis yields the following elemental composition:
element atomic weight (g/mol) percent composition
ca 40.078 22.3%
as 74.9216 41.6%
o 15.9994 35.6%
h 1.00794 60%
what is the empirical formula of this mineral?
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