Consider the following water and planetary data: Earth surface temperature: 20.0°C Mars surface temperature: –55°C Boiling point of water on Earth: 100°C Mars surface pressure: 0.011 atm Freezing point of water on Mars: 0.0°C Earth surface pressure: 1.0 atm AHfus(water): 6.02 kJ/mol Cp(ice): 2.03 J/(g-°C) AHvap(water): 44.0 kJ/mol Density (H2O): 1.00 g/mL A. What is the boiling point of water (in K) on the surface of the planet Mars? В. How much heat is required to completely vaporize 1.0 L of Martian surface water (the temperature starts at -55°C)? (HINT: warm the ice, melt the ice, warm the water, and boil the water)

A chemical engineer studying the properties of fuels placed 1.300 g of a hydrocarbon in the bomb of a calorimeter and filled it with O₂ gas. The bomb was immersed in 2.550 L of water and the reaction initiated. The water temperature rose from 20.00 °C to 23.55 °C. If the calorimeter (excluding the water) had a J °℃' the correct number of significant figures. Note: Reference the Phase change properties of pure substances table for additional information. heat capacity of 403. what was the heat of reaction for combustion (ahydrocarbon) per gram of the fuel? (d for water = 1.00 .) Be sure your answer has g mL J g 0x10

The following information is given for silicon at 1 atm: Th -2355.00°C Tm =1410.00°C Specific heat solid = 0.7110 J/g °C Specific heat liquid = 0.9080 J/g °C AHvap (2355.00°C) = 1.058 x 10¹ 1/g AHus (1410.00°C) = 1.653 x 10³ 1/g A 30.30 g sample of solid silicon is initially at 1380.00°C. If 4.642 x 10 J of heat are added to the sample at constant pressure (P 1 atm), which of the following is/are true? (Select all that apply.) M The sample is at a temperature of 1410.00°C. The sample is a solid in equilibrium with liquid. The sample is at a temperature greater than 1410.00°C. The sample is a solid. The sample is a liquid.

The boiling point of propane at 1 atm (14.7 psi) pressure is -42.0 °C and its ∆H(vap) is 18.8 kJ/mol. R = 8.314 ×10⁻³ kJ/mol･K. Calculate the pressure (in psi) of propane in a tank of liquid propane at 25.0 °C.