nevaehm50 nevaehm50

13-05-2020
Chemistry

contestada

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

Respuesta :

demiriuss demiriuss

13-05-2020

Answer:

-16200J

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

Answer Link

Otras preguntas

which determines the chemical properties of minerals? A. crystal shape B. cleavage C. luster D. type of atoms

What are the coordinates of the vertex for f(x) = x2 + 4x + 10? (−2, 2) (2, 2) (−2, 6) (2, 6)

can you solve this for me

which organelle serves as temporary storage of melanin or glycogen?

What infectious disease can causes neurocognitive disordertive?

pros and cons of canopy fogging?

The expression 3.25b + 2h gives the cost of b burgers and h hotdogs what is the cost of 4 burgers and 6 hotdogs

PLS HELP QUICK!!!!!!! Acting as a citizen from your assigned city-state, write a journal comparing the forms of government of the ancient Greek city-states. Ans

The quantity y varies directly with the square of x and inversely with z. When x is 9 and z is 27, y is 6. What is the constant of variation?21854

How have political conditions in paraguay changed in recent decades?