I'm pretty sure that it's either 83.2% or 91.4%
Answer:
- 0.674 kJ.
Explanation:
The equation used to solve this problem is:
Q = mCΔT
where,
Q = amount of heat
m = mass of the substance
C = specific heat capacity
ΔT = change in temperature
= Temp.f - Temp.i
Given:
m = 29.2 g
Temp.i = 79°C
Temp.f = 27°C
Cp(iron) = 0.444 J/g.K
Q = mCΔT
ΔT = 27.0°C - 79.0°C
= -52°C
= 29.2 * 0.444 * -52
Q = - 674.17 J
= 0.674 kJ.
Answer:
An element is something sound in nature a compound is something with more then one specific atom and can be made or found in nature, and a mixture is a few different atoms that can be separated from each other
