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An aqueous solution of NaCl has a boiling point of 103.2oC.  What is the concentration of NaCl in molality (m)?  The boiling point constant for water is 0.52 oC/m and the normal boiling point of water is 100 oC.

Using the bond enthalpies tabulated below, calculate the enthalpy of reaction for the combustion of hydrogen.  Hint: first draw the lewis structures for each reactant and product. 2H2(g)  +  O2(g) 

Which of the following would you expect to form a solution?

All of the following statements are TRUE except

Choose the chemical equation that describes the 

Which of the following chemical equations represents a reaction for an energy of formation (ΔHfo)?

45 g of ethanol (CH3CH2OH) is combined with 100 g of H2O. What is the mole fraction of ethanol in this solution?

Determine the convergence of the following series:

Using the disk method, find the volume of the solid obtained by rotating the region underneath the graph  on  around the -axis.

Determine which of the following integrals represents the area of the inner loop of