Question

Calculate freeze 62.9 g of iron at 1535oC
Hf (J/g)=257

Answer 1

-16200J

Step-by-step explanation:

(257J/g)(62.9g)

eliminate the variables

u get 16165.3

go to 3 significant digits

u get 16200

and since it is freezing we are taking out energy so it would be

-16200J