1
Q
Give the equation for pressure
A
Pa= force/ area = newtons/metres squared
2
Q
Who made the first barometer
A
Evangelist Torricelli
3
Q
State the pressure at sea levle
A
760 mmHg
4
Q
Give the manometer equations
A
pressure in torr
- Pgas = Patm - h (if atm is pushing in)
- Pgas = Patm + h (if gas is pushing out)
h = cm (if atmospheric pressure in atm) / 76 cm
5
Q
Define: Boyle’s Law
A
• pressure and volume are inversely proportional
- temperature and number of moles (n) are unchanged
- A plot of V vs 1/P should be a straight line with slope k and intercept of zero (y = mx + b)
- V inverse= 1/P
- V = k/P (k is a constant at a specific t)
6
Q
Define: ideal gas
- since k is constant….
A
a gas that strictly obeys Boyle’s law
- since k is constant P1V1 = k = P2V2
7
Q
Fill in the blank: for 1 mol of any gas at 298 K is exactly ____ L
A
22.41
