As you did before, the conversion factor for volume is 22.4 L/mol
Heat can be used as a separate term in the chemical reactions
-This is called enthalpy
- Rxns that release heat are exothermic
- Rxns that absorb heat are endothermic
Both can be use in stoichiometry
Examples:
If 5.0g of methane (CH4) decomposed, what volume of hydrogen would you have?
1) Balance your equation
CH4= C + 2H2
2) Start writing the equation out to find the volume of hydrogen
5.0g x 1 mole x 2 x 2g = 0.31 g of hydrogen
16 g 1 1 mol
Today, we did the lab that needed to find the mass of the precipitate, which is stronium sulphate and copper (II0 nitrate. We separated the precipitate by filtering and drying it. Overall, we did well on the lab and it was a fun lab.