The molar heat of fusion of iron(ii) sulfide (fes) is 20.9 kj/mol. what mass of melted fes at its melting point must solidify to release 150.0 kj of energy? round to the nearest whole gram.

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?