Thermochemistry: heat, enthalpy and calorimetry

Use this for “A reaction warms 100 g of water from 21 °C to 27.5 °C. How much heat did it give off?”, or a metal’s specific heat from its heat, mass and warming.

Use this for the ΔH per mole of a salt that cools the water as it dissolves.

Use this for the heat to take ice all the way to steam: warm it to 0 °C, melt it, warm the water to 100 °C and boil it away.

Use this for ΔH of this reaction, CH₄ + 2O₂ → CO₂ + 2H₂O, from the heats of formation.

Use this for ΔH of this reaction, C + O₂ → CO₂, from C + ½O₂ → CO and CO₂ → CO + ½O₂.