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

Hello everyone! This is all about simile can you answer this?Instruction: What are compared in the following lines? What do the two unlike objects have in commo

how to factor the trinomial 3 x^{2} + 8 -3

Work out the length of line segment PQ. Give your answer correct to 3 significant figures. The coordinates for line PQ are: (-2,5) (6,2) The line goes down dia

Jon is standing on a bridge over a creek. He releases a stone 20 feet from the water. How long will it take the stone to hit the water?

if x+y+z=9, xy+yz+zx =26; find x²+y²+z²

what is the intercept? what is the slope? y+2=9

Robert Hook's discovery helped scientists learn more about _____.

how do you write triple a quantity more than nine

Which element reacts spontaneously with 1.0 M HCl at room temp? 1.copper 2.gold 3.silver 4.zinc

Differentiate the following functions y=4x^3-2x^2+5x^-3.7-6