The table below shows four samples of carbon dioxide and the temperature of the water that they were dissolved in. sample temperature of water (°c) 1 78 2 73 3 55 4 63 which of the samples most likely had the lowest solubility? 1

1- 78

Explanation:

The "sweet spot" for solubility is right as you get closer to the middle point between cold and hot, too cold would decrease the solubility and too hot would make it impossible to dissolve, solubility of carbon dioxide decreases as it gets hotter, in this case the hottest temperature would be 78º so that would be the one with the lowest solubility, the colder carbon dioxide gets, the more solubility it has.

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c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current