A liquid food product is being cooled from 85oC to 25 oC in an indirect heat exchanger using cold water as a cooling medium. If the product mass flow rate is 1200 kg/h, determine the water flow rate required to accomplish product cooling if the water is allowed to increase from 10oC to 20oC in the heat exchanger. The specific heat of the product is 3.8 kJ/(kg K) and the value for water is 4.1 kJ/(kg K)

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 !

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

it is b that is the answer.