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Figure 1 below shows a cross –section of a vacuum flask.
![figheat10620201413.JPG](/courses/uploads/figheat10620201413.JPG)
(i) Name the parts labeled
(ii) Explain how the heat losses are minimized when hot liquid is poured into the flask.
(iii) Boiling water is poured into two identical vacuum flasks A and B. flask A is partially filled while B is completely filled. Both are closed tightly. State with reasons the flask in which the water is likely to have a higher temperature eight hours later.