Question

U DUDUB DOOD 1. What causes increased gas pressure? A) Reduce volume while keeping temperature constant. B) Reduce the number of moles and temperature while keeping the volume constant. C) Increase volume with temperature constant. D) Decrease the temperature while keeping the volume and number of moles constant. 2.The volume of the amount of gas is equal to 10L at 30C" and 760torr., The temperature needed to make the volume equal to 9L with its constant pressure equal to (in K units): - pv, Rv. A) 272.7 b) 0.0 T C) 100.0 d) 25.4. 3. Which of the following laws is Boyle's law: B) - 0 C) n.T=C P =C Q6L 4. A sample of helium gas has volume 600cm at temperature 27 °C and pressure of 570torr. b) -145 c) 0,0 d)-123. Pu 5. Volume (22 g) of carbon dioxide (CO2) at (STP) is equivalent to: A) 1.0 mole b) 22.4 liters C) 12.7 liters d ) 11.2 liters. 6. If the temperature of the gas is increased : A) its intensity increased b) its speed increased b) its spee d) the forces of attraction between its C) its volume decreased molecules increased.

Answer 1

1. According to Boyle's Law- At constant temperature pressure is inversely proportional to Volume. So if we reduce the volume, the pressure will increase. So option A is correct.

2. To solve this question we will use Charles' Law (as the pressure is constant)

According to Charle's Low, | 10 L 밟는을 (3+273k = 는 °C = 273 k JOL XT = 9L x 303 K - 9Lx 303k 10L : T2 = TX363] < = 2727k

3. According to Charles' Law - at constant pressure the ratio of Volume and Temperature remains constant or V/T = c

So option B is correct.