## anonymous one year ago It takes 2.52 × 10^5 J of heat to melt 4.00 kg of a substance. According to the table (attached inside!), what is the substance? copper, iron, silver, or gold **not sure! thank you:)

1. anonymous

2. Michele_Laino

we have to find the heat capacity

3. souvik

well...find the amount of heat needed to melt 1 kg of substance

4. Michele_Laino

so we have to compute this: $\Large C = \frac{Q}{m}$

5. Michele_Laino

where Q=2.52 × 10^5 J and m= 4Kg

6. anonymous

okay! so 2.52 * 10^5 / 4 = 63000 ?

7. Michele_Laino

ok!

8. anonymous

so that means 6.3 * 10^4? so our substance is gold?

9. Michele_Laino

that's right!

10. anonymous

yay!! thank you:)

11. Michele_Laino

thank you!! :)