How much energy does a copper sample absorb as heat if its specific heat is 0.384 J/g·ºC, its mass is 8.00 g, and it is heated from 10.0ºC to 40.0ºC?
A. 0.0016 J/g•°c
B. 0.0016 J
C. 92.2 J
D. 92.2 J/g•°c

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

16

explanation:

the marks go by 4s