Question Library

V1 = 600cm3, T1 = 27 = 273 = 300k T2 = 35 + 273 = 308K, V2 = ? (V)1/T1 = (V)2/T2 = V2 = (V)1/T1 x X T2 = (600 X 308)/300 = 616 cm3

Relative Humidity = (S.V.P. of water at dew point)/S.V.P of water at air temperature =(18)/24 x 100% = 75%

If the linear expansivity = ∝ => area expansivity \beta = 2∝. And cubic expansivity δ = 3∝. => 6.3 x 10\(^{-6}\) = 3∝ ∴ ∝ = \(\frac{6.3 \times 10^{-11}}{3}\) = 2.1 x 10\(^{-6}\) ∴ Area = 2∝ = 2 x 2.1x10\(^{-6}\) = 4.2 x 10\(^{-6}\)K\(^{-1}\)

The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion.

As the temperature increases, the molecules in the gas move faster, impacting the gas's container more frequently and exerting a greater force. This increases the pressure. And similarly As the pressure goes up, the temperature also goes up. So the temperature and the pressure is directly proportional to each other. At a fixed point, temperature is kept constant. Hence, at this point, it can be deduced that \(P_{1} = P_{2}\)

30^\circC + 273 = 303K 57^\circC + 273 = 330K ∆T = 330K - 303K → 27K

expansion of wrist-watch causes lose of time

pressure at H = 40m ; pressure at G, p1 = 20m \(\frac{p_1}{p_1}\) = \(\frac{40 + 10}{20 + 10}\) = \(\frac{50}{30}\) ≈ 1.67

General Gas Law: \(\frac{P_1 V_1}{T_1}\) = \(\frac{P_2 V_2}{T_2}\) where T\(_1\) = -73 + 273 = 200k, T\(_2\) = ?, V\(_1\) = 1, V\(_2\) = \(\frac{1}{2V}\), P\(_1\) = 1.5, P\(_2\) = 4.5 T\(_2\) = \(\frac{P_2 V_2 T_1}{P_1 V_1}\) T\(_2\) = \(\frac{4.5 * 1/2 * 200}{1.5 X 1}\) T\(_2\) → 300k or 27ºC

Atmospheric pressure = 70cmHg (which is the height of mecury) pressure = pgh = pwghw Where Pw = density of water hw = height of water ph = pwhw 13.6*70 = 1*hw hw = 952cm Pressure of gas in cm of water = 952 + 3 = 955cm

Since the gas molecules expanded, there's an increase in Separation

Gay-Lussac's Law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas, when the volume is kept constant.