Answer to Question #221323 in Inorganic Chemistry for Mary

Question #221323
A mineral contains 14.7% calcium and 67.5% tungsten the remainder is oxygen, find its Emperical formula
1
Expert's answer
2021-07-29T22:56:01-0400

"Oxygen = 67.5-14.7= 52.8"


Moles

"calcium =\\frac{14.7}{40.08}=0.367"


"tungsten =\\frac{67}{183.84}=0.367"


"Oxygen =\\frac{52.8}{32}=1.65"


Mole ratio


"Calcium =\\frac {0.367}{0.367}=1"


"Tungsten =\\frac {0.367}{0.367}=1"


"Oxygen =\\frac {1.65}{0.367}=4.49= 4"


Empirical formula CaO4W




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