Ethane is supplied at the rate F with oxygen at the rate W and leaves the following products CO2, H2O, O2, C2H6 and H2 at the rate P. How many independent element balances are possible?

Ethane is supplied at the rate F with oxygen at the rate W and leaves

1.	Ethane is supplied at the rate F with oxygen at the rate W and leaves the following products CO2, H2O, O2, C2H6 and H2 at the rate P. How many independent element balances are possible?
A.	t1
B.	t2
C.	t3
D.	t4
Answer» D. t4