How much heat is required to melt 20 g of gold at 1064.18 °C with a heat of fusion of 64 J/g *
1 answer:
Answer:
1280J are required.
Explanation:
Heat of fusion is defined as the amount of heat required to change its state from liquid to solid at its melting point at constant pressure.
As heat of fusion of gold is 64J/g, there are required 64J to melt 1g of gold at its melting point. The energy required to melt 20g is:
20g * (64J/g) =
1280J are required
You might be interested in
7. Atomic mass
8. Atomic number
9. Chemical symbol
10. Right
Answer:
preservatives and low temperature
Answer:
I think option (d) is right answer
Carbon dioxide sublimation
water evaporate
physical change is just change between solid/liquid/gas, other two are chemical changes
It is too early for students to have career preferences while still in school
(i believe) <span />