How does energy flow when a refrigerator door is accidentally left open? In other words, does the cold air from the fridge flow out or does the heat from the room flow inside the fridge?

Explanation:

Energy as heat flows from a body of higher temperature to a body of lower temperature.

In this question, inside the refrigerator represents the lower temperature. The room temperature represents the body of higher temperature.

Hence;

The heat would flow from inside room to inside the fridge.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.