Outcomes
Upon completion of this lesson, you should be able to:
- calculate the heat gained or lost from a system using the formula
where ΔH is the molar enthalpy of a phase change or a chemical reaction - calculate the ΔH for a system given the mass of a species (or vice versa)
- perform calculations which apply the first law of thermodynamics in determining the heat of a reaction (or phase change) given experimental data for the changes to the surroundings
Prerequisites
Use a notepad, word processor or html editor to prepare responses to these items. Be prepared to share your answers with your teacher and/or your classmates.
- Convert each of the these amounts to moles
- 15.0 g of hydrogen (apply n = m/M)
- convert 5.0 L of hydrogen at STP to moles (apply n = v/V)
- How many particles are there in a mole?
- What does STP mean? How is it different from SATP?