Which Gas Equation to Use (1)

.pdf
Combined Gas Law P 1 V 1 = P 2 V 2 T 1 T 2 **No grams or mols ** Not changing the amount of gas Ideal Gas Law PV = nRT ** grams or mols (n =mols) ** Not changing the amount of gas R = 0.0821 L•atm mol•K Volume must be in liters Pressure must be in atm Avogadro's Law V 1 = V 2 n 1 n 2 ** grams or mols (n = mols) ** changing the amount of gas Questions to ask: 1. Are they asking about grams or mols? If so, you can't use the Combined Gas Law. 2. Are you adding gas or letting gas out? If so, you use Avogadro's Law 3. Otherwise, use Ideal Gas Law
Page1of 1
Uploaded by SargentElectronScorpion37 on coursehero.com