Calculate the heat energy released when 24.1g of liquid mercury at 25 degrees celsius is converted to solid? mercury.; steve i got that answer wrong. i have to convert grams to moles, find heat released in freezing and cooling and then add the amount of heat released heat capacity for hg(l)=28.0j/mol-k enthalpy of fusion: 2.29 kj/mol

Molar mass Hg = 200.5920g/mol 
Hg = 24.1/200.5920 = 0.120mol 

234.32K liquid to 25C (298.15K) liquid 
h = (0.120)(28.0)(298.15 - 234.32) = 214.4688 J 

234.32K liquid to 234.32K solid 
h = (0.120)(2.29) = 0.2748 kj 

total heat = 0.2145 + 0.2748 = 0.4893 kJ

C3HNO

Explanation:

Organic molecules are molecules that are found in living organisms. They are characterised by the presence of carbon atoms (C). These could be in the form of linear chains or cyclic structures. In general, the C atoms in organic molecules can be linked to other C atoms or to hetero atoms like oxygen (O), nitrogen (N), sulfur (S), halides etc.

Based on the given options: C3HNO contains C, H, N and O and best fits the description and characteristics of an organic molecule