The temperature at which molarity of pure water is equal to its molality

3 answers

Never a question like this before and I've been in the business a LOOOOONg time. Since M = mols/L solution and m = mols/kg solvent, then I think the temperature at which the density of water is 1.000 g/mL so google density H2O vs temperature and find that spot.
Calculate the volumeof benzene,C6H6,d=0.88g/ml,molar mass=78.11 g/mol isrequired to produce 1.5 x 10^3 kJ of heat according to the following reaction?
277K