Answer:
2.2 J/°C.g.
Explanation:
- To solve this problem, we can use the relation:
Q = m.c.ΔT,
where, Q is the amount of heat released by the unknown substance (Q = 550 J).
m is the mass of the unknown mass (m = 25.0 g).
c is the specific heat of the unknown substance (c = ??? J/°C.g).
ΔT is the difference between the initial and final temperature (ΔT = 10°C).
∴ c = Q/(m.ΔT) = (550 J)/(25.0 g)(10°C) = 2.2 J/°C.g.
