Eight (8).
16 gallons is 2,048 ounces @128 fluid ounces per gallon.
1.25 US gallons.
0.703125 gallons
175.5 gallons.
That is 320 ounces.
2.3 US gallons weighs 294.4 ounces
110
About 3.2 (3.234375) US gallons.
That would be 1,280 ounces
That is 80 ounces
1.3 OUNCES
how many ounces do of roundup do I mix with two gallons of water?