Which of the following changes can alter the form of a substance but does not necessarily change it to an other substance?
1 answer:
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Answer:
<em> Pressure exerted by the gas is 574.85 torr</em>
Explanation:
Atmospheric pressure = 751 torr
but 1 torr = 1 mmHg
therefore,
atmospheric pressure = 751 mmHg
1 mmHg = 133.3 Pa
therefore,
atmospheric pressure = 751 x 133.3 = 100108.3 Pa
distance labeled (tube section with mercury) = 176 mm
the pressure within the tube will be
= ρgh
where ρ is the density of mercury = 13600 kg/m^3
h is the labeled distance = 176 mm = 0.176 m
g is acceleration due to gravity = 9.81 m/s^2
= 13600 x 9.81 x 0.176 = 23481.216 Pa
The general equation for the pressure in the manometer will be
=
+
where is the atmospheric pressure
is the pressure within the tube with mercury
is the pressure of the gas
substituting, we have
100108.3 = 23481.216 +
= 100108.3 - 23481.216 = <em>76627.1 Pa</em>
This pressure can be stated in mmHg as
76627.1 /133.3 =<em> 574.85 mmHg </em>
and also equal to<em> 574.85 torr</em>
Answer:
Explanation:
Boyle's law states that:
"For an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume".
Mathematically:
where
p is the pressure of the gas
V is the volume of the gas
The important condition in order to verify Boyle's law in an experiment is that the temperature of the gas must remain constant. This means that the temperature of the gas during the experiment must be kept constant. This can be achieved, for example, by placing the apparatus containing your gas (for example, a glass tube) inside a thermal bath: for instance, a large amount of water kept at constant temperature. This way, the gas inside the tube will also have the same temperature of the water, which is constant.
Learn more about ideal gases:
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