In Fig. 17-c, what is the current across I1?                   

  In. Fig. 18-2, what is the Vc?

How much XC will there be if the capacitance is 10 microF and the frequency is 1400 Hz? 

  In Fig. 17-c, what is the current across I2?                      

The rate of voltage change, dv/dt, for a sine wave, is determined by both its amplitude and its frequency. 

Calculate the standard free energy for the reaction given. 2 CH3OH(l) + 3 O2(g) → 2 CO2(g) + 4 H2O(l)

Sodium reacts violently with water according to the equation:2 Na(s) + 2 H2O(l) → 2 NaOH(aq) + H2(g)The resulting solution has a higher temperature than the water prior to the addition of sodium. What are the signs of ΔH° and ΔS° for this reaction?

For bromine, ΔH°vap = 30.91 kJ/mol and ΔS°vap = 93.23 JK-1mol-1 at 25°C. What is the normal boiling point for bromine?

At constant pressure and temperature, which statement is true?

For the reaction 3 C2H2(g) → C6H6(l) at 25°C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. Calculate the standard free energy change at 25°C.