Which law is described by saying that doubling the absolute temperature will double the pressure of a sample of gas in a rigid c
2 answers:
Answer:
Gay Lussac law
Explanation:
Gay Lussac law states that for a gas kept at constant volume (so, in a rigid container), the pressure of the gas is directly proportional to the absolute temperature.
In mathematical formula:
where
p is the gas pressure
T is the absolute temperature
According to this law, we see therefore that if the absolute temperature of the gas is doubled:
T' = 2T
The pressure will also double:
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Answer:
a) The specific heat capacity means the amount of heat needed by a unit mass of a material to increase its temperature in one unit.
b) Liquid P - , Liquid Q -
, Liquid R -
, Liquid S -
Explanation:
a) The specific heat capacity means the amount of heat needed by a unit mass of a material to increase its temperature in one unit.
b) Let suppose that heat transfer rates between liquids and surroundings are stable. The quantity of the heat released is determined by the following expression:
(1)
Where:
- Mass of the liquid, in kilograms.
- Specific heat capacity, in joules per kilogram-degree Celsius.
- Initial temperature of the sample, in degrees Celsius.
- Freezing point, in degrees Celsius.
Liquid P (,
,
,
)
Liquid Q (,
,
,
)
Liquid R (,
,
,
)
Liquid S (,
,
,
)
Answer:
(a)
67.1 s
(b) 2.5 m
(c) 2.5 m
Explanation:
initial speed, u = 0 m/s
final speed, v = 70 m/s
acceleration, a = 5 m/s2
distance, s = 1800 m
(a) Use third equation of motion
Let the time is t.
Use first equation of motion
v = u + at
134.2 = 0 + 5 t
t = 67.1 s
(b) Use second equation of motion
(c) Use second equation of motion