Take the Chemical NH4Cl As the chemical dissolves in water, Determine if the Enthalpy ad Entropy are positive or negative. Explain your answer.

3- For a strong electrolyte when C= 0.04 M then Am= 250 S. cm² mol1 and when C = 0.09 M then Am= 200 S. cm² mol1, then for that electrolyte What is the value of Am and A°m are respectively?

900s Figure 5.5 shows the experimentally determined phase diagrams for the nearly ideal solution of hexane and heptane. (i) Label the regions of the diagrams to which phases are present. (ii) For a solution containing Imol each of hexane and heptane molecules, estimate the vapor pressure at 70 °C when vaporization on reduction of the external pressure just begins. (iii) What is the vapor pressure of the solution at 70 °C when just one drop of liquid remains. (iv) Estimate from the figures the mole fraction of hexane in the liquid and vapor phases for the conditions of part b. (v) What are the mole fractions for the conditions of part c? (vi) At 85 °C and 760 Torr, what are the amounts substance in the liquid and vapor phases when zheptane=0.40? 70 °C 700 50아- 30아 0.2 0.4 0.6 0.8 1 Mole fraction of hexane, z 100- 90 80F 70 760 Torr 60 0.2 0.4 0.6 0.8 1 Mole fraction of hexane, z 1 atm 760 Torr Figure 5.5 Phase diagrams for the nearly ideal solution of hexane and heptane. Temperature,…

(10). For pacemaker batteries using the this chemistry (2Li + I2-→ 2Lil) to discharge, you would expect the positive electrode to be: A. Li electrode B. I2 electrode C. No electrode needed D. Either side

derivation of ideal gas equation for kinetic theory of gas 1.frequency of collision 2.derive the force 3.To determine the pressure of the gas 4.to determine energy associated with ideal gas 5.determine ideal gas equation 6.determine V_rms² from ideal gas Please break each derivation step by step for better understanding ,if possible include diagram

How did you assume the coefficient of discharge Cd? Did you get it from a table?    Thx

Can you help me with part d?

Caculate the activity of liquid water at 25 oC and 100 barr pressure. The molar volume of H2O at this temperature is 18.07 cm3.

True or false: For a mixture forming VLE, the fugacities of all chemical species must be identical

Describe the significance of the Gibbs theorem for ideal gases.