Homework Answers
Let total mass be 100 g
we have mass of each elements as:
K: 28.3 g
V: 37.0 g
O: 100 g - 28.3 g - 37.0 g = 34.7 g
Divide by molar mass to get number of moles of each:
K: 28.3/39.1 = 0.7238
V: 37/50.94 = 0.7263
O: 34.7/16.0 = 2.1688
Divide by smallest to get simplest whole number ratio:
K: 0.7238/0.7238 = 1
V: 0.7263/0.7238 = 1
O: 2.1688/0.7238 = 3
So empirical formula is:KVO3
Answer: KVO3
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