Based on the thermodynamic properties provided for water, determine the amount of energy released for 50.00 g of water to go from 62.0 °C to -17.0 °C. Property Melting point Boiling point AHtus AHvap Cp (s) Cp (1) Cp (8) Value 0.0 100.0 6.01 40.67 37.1 75.3 33.6 Units °C °C kJ/mol kJ/mol J/mol. °C J/mol °C J/mol °C

Based on the thermodynamic properties provided for methanol (below), select from the following list the equation(s) necessary to calculate the amount of energy needed for 5.0 kg of methanol to go from -64°C to 88°C. Property Value Units Melting point -94 °C Boiling point 65 °C AHfus 3.18 kJ/mol AHvap 37 kJ/mol 615) 48.7 J/mol.°C Cp (1) 81.1 J/mol.°C 5 (8) 43.8 J/mol °C Choose one or more: A. q = n(43.8 J/mol °C)AT, where AT is negative B. q=n(48.7 J/mol ·°C)AT, where AT is negative C. q= n(81.1 J/mol -°C)AT, where A Tis negative D. q = n(43.8 J/mol °C)AT, where A Tis positive E. q=n(-3.18 kJ/mol) F. q- n(37 kJ/mol) G. q=n(-37 kJ/mol) H. q- n(3.18 kJ/mol) 1.q=n(48.7 J/mol °C)AT, where AT is positive J.q=n(81.1 J/mol °C)AT, where A Tis positive

Based on the thermodynamic properties provided for water, determine the amount of energy needed for 2.00 kg of water to go from -16.0 °C to 69.0 °C. Property Melting point Boiling point AHfus AHvap Cp (s) Cp (1) Cp (8) kJ Value 0.0 100.0 6.01 40.67 37.1 75.3 33.6 Units °℃ °C kJ/mol kJ/mol J/mol. °C J/mol • °C J/mol. °C

Please answer question 3.

Octane(C3H18) is a hydrocarbon found in crude oil. Thermochemical data for octane is provided below. The total change in enthalpy is 15.94 kJ when heating 0.2500 moles of octane from -70.00°C to 100.0°C. Determine the AHfusion. Melting point: -57.00 °C Boiling point: 126.0 °C J Csolid : 185.0 °C mol J Cliquid: 254.0 °C mol J Cgas: 250.0 °C mol AHvap: 34.40 kJ/ mol Molar mass: 114.23 g/mol 0.2693 kJ/mol 4.720 kJ/mol O 21.50 kJ/mol 0.2540 J/mol

Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 1.05  kg of water decreased from 117  °C to 56.5  °C.  Property Value Units Melting point 0 °C Boiling point 100.0 °C ΔHfus 6.01 kJ/mol ΔHvap 40.67 kJ/mol cp (s) 37.1 J/mol · °C cp (l) 75.3 J/mol · °C cp (g) 33.6 J/mol · °C

Calculate the amount of heat needed to raise the temperature of 55.0 g of liquid water from 25°C to 99°C. The specific heat of liquid water is 1.00 cal/g °C

How many joules of heat are required to heat 25.2 g of ethyl alcohol from the prevailing room temperature, 22.5 oC, to its boiling point, 78.5 oC?

Calculate the heat required to bring 10.0 g CCl2F2 from -29.8°C as a liquid to the gas phase at 10.0°C. (molar mass = 120.91 g/mol) Cs (gas) = 0.074 kJ/mol·K ΔHvap = 20.1 kJ/mol ΔHfus = 4.14 kJ/mol

Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 1.45  kg of water decreased from 109  °C to 40.5  °C.   Property Value Units Melting point 0 °C Boiling point 100.0 °C ΔHfus 6.01 kJ/mol ΔHvap 40.67 kJ/mol cp (s) 37.1 J/mol · °C cp (l) 75.3 J/mol · °C cp (g) 33.6 J/mol · °C      kJ