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How do you read pressure enthalpy chart?
by smoking 3 oz of crack and then u will understand it
Why you calculate enthapy?
Generally enthalpy is analgous to the energy of a material at a particular temperature and pressure. It is calculated to determine the energy a material holds, or more often, enthalpy differences are calculated to determine how much energy is required to bring a material from one temperature and pressure to another temperature and pressure.
What is the relationship between enthalpy and temperature?
Enthalpy is the amount of energy in a system and when this changes (when a reaction happens), the energy is either released (exothermic) or absorbed (endothermic) and this energy is usually released or absorbed as heat. Therefore when the enthalpy decreases, heat is released from the system making it exothermic. In contrast, when the enthalpy increases, heat is absorbed making it endothermic.
What is the physical significance of enthalpy?
it is the total energy required to create any system by displacing its volume and pressure.
Is the heat content of a system at a constant pressure?
Yes it is possible, for example when water freezes there is a point when the temperature remains constant however energy is released as the water condenses.
What does the enthalpy vs temperature graph reveal about the relationship between enthalpy and temperature?
The enthalpy vs temperature graph shows how enthalpy changes with temperature. It reveals that as temperature increases, enthalpy also tends to increase. This indicates a positive relationship between enthalpy and temperature.
What characteristics of a substance is NOT affected by enthalpy and entropy?
Pressure is not affected by enthalpy and entropy.pressure
What is the relationship between constant pressure enthalpy and the changes in a system's energy content during a process?
Constant pressure enthalpy is a measure of the energy content of a system at a constant pressure. During a process, changes in the system's energy content are reflected in the enthalpy changes. The relationship between constant pressure enthalpy and changes in energy content is that they are directly related - as the enthalpy changes, so does the energy content of the system.
How can the enthalpy of air be calculated?
The enthalpy of air can be calculated using the equation: enthalpy internal energy pressure volume. This equation takes into account the internal energy of the air and the pressure and volume of the system.
Define enthalpy and how it is measured?
Enthalpy is a particular amount of heat that is produced or released at a given pressure. There are specific equations that must be used to calculate enthalpy.
When graphing enthalpy and entropy what variables are included?
Temperature and energy are two of the variables included when graphing enthalpy and entropy. Enthalpy is made up of the energy, pressure, and volume of a system. Entropy is a way to determine the different ways energy can be arranged.
Choose the name and symbol for internal heat of a system at constant pressure?
The name for the internal heat of a system at constant pressure is enthalpy, symbolized as "H."
When does heat equal enthalpy in a chemical reaction?
Heat equals enthalpy in a chemical reaction when the reaction is carried out at constant pressure.
What is the enthalpy of condensation for a substance?
The enthalpy of condensation for a substance is the amount of heat released when a gas transforms into a liquid at constant pressure.
What is the enthalpy equation for an ideal gas?
The enthalpy equation for an ideal gas is H U PV, where H is enthalpy, U is internal energy, P is pressure, and V is volume.
which energy profile best shows that the enthalpy of formation of CS2 is 89.4 kJ/mol?
graph D
When does enthalpy become zero?
Enthalpy can be zero for a pure substance at its standard state, where it is defined as the enthalpy of formation. This typically occurs at a reference temperature and pressure specified for the substance.
