Answer:
CaCl₂
Explanation:
First we <u>convert the given masses of elements into moles</u>, using <em>their respective molar masses</em>:
Now we divide those numbers of moles by the lowest value among them:
Meaning the empirical formula for the compound is CaCl₂.
69.94% iron by mass.
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For the data set 1, 1, 2, 5, 6, 6, 9 the median is 5. For the data set 1, 1, 2, 6, 6, 9 the median is 4.
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B