Calculate as per mole for the melting of hg at -38°c, ah fus = 2.3 kj/mol. j/mol k

Answer : The value of change in entropy for melting of Hg is 9.8 J/mol.K

Explanation :

Formula used :

where,

= change in entropy

= change in enthalpy of fusion = 2.3 kJ/mol

= melting point temperature =

Now put all the given values in the above formula, we get:

Therefore, the value of change in entropy for melting of Hg is 9.8 J/mol.K

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6