Hey Gabriel,

So this problem is asking about specific heat and the heat needed to change temperature given a mass and specific heat. This means we must use the q=mcΔT formula, where q= heat in Joules, m is mass (g), c is specific heat in (J/g°C) and ΔT is the change in temperature in Celsius.

First, let's start with finding ΔT. ΔT is always defined as T_{final} - T_{initial}.

Therefore, 55°C- 22°C= 33°C.

Now we must plug in all of our variables

q=mcΔT

q= (10.0g)(0.90J/g°C)(33°C)_{ }

q= 297 Joules

Hope this helped!