Answer:
Sc (Scandium) has the given electronic configuration.
Explanation:
The given electronic configuration is [Ar].
The last electron enters the d-subshell and hence is a d-block element known as Scandium with chemical symbol Sc.
For 4s subshell
n=4,l=0 and m ranges from -l to +l so m=0.
For 3d subshell
n=3,l=2 and m ranges from -l to +l so m can take values -2,-1,0,+1,+2
Note:
l values for subshells:
s : 0
p : 1
d : 2
f : 3 and so on.
Taking into account the definition of calorimetry ans sensible heat, you need a heat of 38.72 kJ to raise the temperature of 400 g of ethanol from 20 °C to 60 °C.
<h3>What is calorimetry and sensible heat</h3>Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where
In this case, you know:
Replacing in the definition of sensible hear:
Q = 2.42 × 400 g× 40 °C
Solving:
<u><em>Q= 38,720 J= 38.72 kJ</em></u>
Finally, you need a heat of 38.72 kJ to raise the temperature of 400 g of ethanol from 20 °C to 60 °C.
Learn more about sensible heat:
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