Whichever one has a negative enthalpy value.
Hello,
<span>the gas phase is [Ar] 3d^5 4s^2 and since there are five 3d AOs the atom has five unpaired e⁻: (↑)(↑)(↑)(↑)(↑) (Hund's rule)</span>
Answer:
The answer to your question is:
Explanation:
Which formulas are incorrect:
NaO₂ Incorrect Na₂O correct
RbCl Correct
K₂S Correct
Al₂Cl₃ Incorrect AlCl₃ correct
MgP₂ Incorrect Mg₃P₂ correct
Answer : The specific heat of tin is, 0.213 J/g.K
Explanation :
Formula used :

where,
q = amount of heat lost = -399.4 J
c = specific heat capacity of tin = ?
m = mass of tin = 25.0 g
= final temperature = 
= initial temperature = 
Now put all the given values in the above formula, we get:


Therefore, the specific heat of tin is, 0.213 J/g.K