Question

please help my chemistry homework thank you so muchThe specific heat of gaseous krypton, c = 0.248 J/g°C.

Answer 1

-52.2 Joules

Step-by-step explanation

Given that;

Mass of krypton, m = 12.3 g

Temperature change, ΔT = 22.2°C - 39.3°C = -17.1°C

The specific heat of gaseous krypton, c = 0.248 J/g°C.

What to find:

The energy change, Q.

Step-by-step solution:

The energy change, Q can be determined using:

Q = mcΔT

Putting the values of the given parameters into the formula, this yields:

`\begin{gathered} Q=12.3g*0.248J\text{/}g°C*-17.1°C \\ \\ Q=-52.2\text{ }J \end{gathered}`

Therefore the energy change = -52.2 Joules