A chemist prepares a solution of barium acetate (Ba(CH, CO*
by measuring out 60.3 umol of barium acetate into a 450 mL volumetric flask and filling the
flask to the mark with water.
Calculate the concentration in mmol/L of the chemist's barium acetate solution. Round your answer to 3 significant digits.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

b.

the accuracy of the data.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.