A closed, rigid tank contains a two-phase liquid-vapor mixture of Refrigerant-22 initially at −18°C with a quality of 50.9%. Energy transfer by heat into the tank occurs until the refrigerant has become purely a saturated vapor. What is the final temperature, in [°C]? (2°C) What is the net amount of heat per unit mass of refrigerant to/from the tank, in [kJ/kg]? (103 kJ/kg)

Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

In a chemical reaction, the final amount of the products is determined by the a. universal gas law b. law of definite proportions c. air pressure d. temperature e. none of the above me