Gas Laws. Advanced Problem Solving. Dalton’s Law.
Advanced Problem Solving
Hint 1: Dalton’s law says that you can treat each gas individually.
Hint 2: Treat as two different problems, one for each gas.
Hint 3: Then add to get total pressure.
What is the partial pressure of Nitrogen?
A) 321kPa B) 850 kpa C) 47 kPa D) 229 kPa E) none of the above
Hint 1: If the total pressure is 755 Torr, what is the pressure of N2O?
Hint 2: How do you determine the volume of a gas at a new pressure?
What is the volume of dry gas?
A) 126 mL B) 736 torr C) 129 mL D) 123 mL E) none of the above
Hint 1: Due to the combustion reaction, it must be all CxHyOz. Find the empirical formula, and therefore empirical mass as in fundamental sections.
Hint 2: You know grams of eugenol, so if you know the T, V, and P you can find moles. Can you use grams and moles to find molecular mass? (hint what are the units on molecular mass).
Density, Molar mass and Ideal Gas Law
(likely won’t get to this one, answers online if we don’t)
you have g/L
You want g/mol
What units will cancel the L and give you mol?
Hint 2: Can you get that (hint 2.a, maybe by using the ideal gas law)