KNOWLEDGE WORLD ACADEMY
EMPIRICAL FORMULA ASSIGNMENT(MOLE CONCEPT)
Online class
1) A compound is found to contain 63.52% iron and 36.48% sulfur, find its empirical
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formula ?
A compound is found to contain 26.56% potassium 35.41% chromium and oxygen
38.03% find the empirical formula?
A 60g sample of tetraethyllead, a gasoline additive is found to contain 38.43g lead
17.83g carbon and 3.74g hydrogen. Find its empirical formula?
A 17g sample of unidentified compound contains 29.84g sodium 67.49g chromium and
72.67g oxygen .find its empirical formula?
A sample of an oxide of manganese is analyzed and it is found that 11.0g of manganese
is combined with 4.8g oxygen what is the empirical formula /
A hydrocarbon contains 85.7% carbon and 14.3% hydrogen work out the empirical
formula ?
A compound x contains 505 sulphur and 50% oxygen what is the empirical formula?
A compound ofcarbon has a composition of 15.8% carbon and 84.2% sulphur. Find its
empirical formula?