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

PLEASE ELP ME ITS URGENT!!! 25 POINTS!!!!! Write 2.4 × 1012 in standard notation.

A particular electric car is supplied with 300 kJ of chemical energy by the battery. Of this, a total of 70.5 kJ of energy is wasted as heat. Calculate the ove

Sa S.N Date Title Page No. Re What is Internet

Qual é o pigmento responsável pela cor da pele?

The solution of this equation has an error. Which of the following steps has an error? Step 1: -2x + 8 - 3x = 7 Step2:–5x+8=7 Step3:-5x = 15 Step4: x = -3 O Ste

if 2 sides of a triangle are 6 and 16, what is the range of the possible lengths of the third side?

describe the left right side and background of the picture

When colonists boycotted British goods under the Stamp Act, they stole products that were taxed. refused to participate in buying stamps. sold products that wer

A candidate scored 32 marks out of 80, find his percentage score

A car horn creates a 595 Hz tone at rest. Two cars pass on the street, each going 20.0 m/s; the first car honks. What frequency does the other car hear before t