Answer the following questions based on the phase diagram (not to scale!) for hydrogen , H2 , and on the following data: ΔHfusion = 58.4 J/g, ΔHvap = 452 J/g, specific heat gas = 14.3 J/g·K (a) What is the normal melting point?___ K The normal boiling point?___ K (b) At what temperature and pressure do the three phases coexist in equilibrium? T=___ K, P =____ atm (c) Is hydrogen a solid, a liquid or a gas at room temperature and pressure? If a gas, is it a permanent gas? (d) Which is the more dense phase, the liquid or the solid? (e) A 38.5 g sample of liquid hydrogen is heated at a constant pressure of 1 atm from a temperature of 20.3 K to a temperature of 109.7 K. How much energy in kJ is required?______ kJ

Answer the following questions based on the phase diagram (not to scale!) for hydrogen , H₂ , and on the following data:
ΔH_fusion = 58.4 J/g, ΔH_vap = 452 J/g, specific heat gas = 14.3 J/g·K


(a) What is the normal melting point?___ K   The normal boiling point?___ K

(b) At what temperature and pressure do the three phases coexist in equilibrium? T=___ K, P =____ atm

(c) Is hydrogen a solid, a liquid or a gas at room temperature and pressure?

   If a gas, is it a permanent gas? 

(d) Which is the more dense phase, the liquid or the solid? 

(e) A 38.5 g sample of liquid hydrogen is heated at a constant pressure of 1 atm from a temperature of 20.3 K to a temperature of 109.7 K. How much energy in kJ is required?______  kJ