In one liter there are almost 34 ounces, or more exactly, 33.8140227 ounces. In five liters of any liquid there are exactly 169.070113 ounces.You can find more information here:
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5 liters is equal to 169.0701 ounces.
http://wiki.answers.com/Q/How_many_ounces_in_a_5li...

1 liter is equal to 33.8140227 US fluid ounces, so .5 liters is equivalent to
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5 liters is equivalent to 169.070114 US fluid ounces. Fluid ounce is an imperial volume unit. Liter is widely used in metric system as volume unit.
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