Question 1210263
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The container with the gallon of water weighs 5 kg.<br>
When half of the water is emptied, the container and the remaining water weigh 2.6 kg.  So the weight of the half gallon of water that was emptied is (5-2.6) = 2.4 kg.<br>
The weight of the half gallon of water that remains in the container is also 2.4 kg.<br>
Since the combined weight of the container and the remaining half gallon of water is 2.6 kg, the weight of the container alone is (2.6-2.4) = 0.2 kg.<br>
ANSWER: 0.2 kg<br>