A red hot iron bar is dipped into 600 ml of water ( 600.g of water) which causes the temperature of the water to rise from 22 degrees celcius to 89 degrees
celcius. Determine the heat lost by the iron bar. hint: The amount of heat lost
= amount of heat gained

168277.2 J

Explanation:

m = Mass of water = 600 g

c = Specific heat of water = 4.186 J/g°C

= Change in temperature of water =

We know that the amount of heat lost = amount of heat gained

Heat lost by the iron bar is 168277.2 J.

the millers tale is the answer.

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 !