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PilotLPTM [1.2K]
2 years ago
6

Liquid sodium can be used as a heat transfer fluid in some nuclear reactors due to its high thermal conductivity and low neutron

absorptivity. Its vapor pressure is 40.0 torr at 633 degree C and an enthalpy of vaporization of 1.00x10^2 kJ/mol. To what temperature can it be heated if a maximum of 500 torr pressure is allowed in the system?
Physics
1 answer:
Leya [2.2K]2 years ago
5 0

Answer:

1119.1 K

Explanation:

From Clausius-Clapeyron equation:

\frac{dP}{dT}=Δ\frac{h_{v} }{R} (\frac{1}{T^{2} } )dT

The equation may be integrated considering the enthalpy of vaporization constant, and its result is:

ln(\frac{P_{2} }{P_{1} } )=-Δ\frac{h_{v} }{R}*(\frac{1}{T_{2} }-\frac{1}{T_{1} })

Isolating the temperature T_{2}

T_{2}=\frac{1}{\frac{-R}{dhv}*ln(\frac{P_{2} }{P_{1}}) +\frac{1}{T_{1}} }

T_{2}=\frac{1}{\frac{-8.314}{1.00*10^5}*ln(\frac{500}{40}) +\frac{1}{906.15}}

T_{2}=1119.1K

Note: Remember to change the units of the enthalpy vaporization to J/mol; and the temperatures must be in Kelvin units.

There is a format mistake with the enthalpy of vaporization, each 'Δ' correspond to that.

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the focal length of a simple magnifier is 8.50 cmcm . assume the magnifier to be a thin lens placed very close to the eye.
Igoryamba

When the object is at the focal point the angular magnification is 2.94.

Angular magnification:

The ratio of the angle subtended at the eye by the image formed by an optical instrument to that subtended at the eye by the object when not viewed through the instrument.

Here we have to find the angular magnification when the object is at the focal point.

Focal length = 6.00 cm

Formula to calculate angular magnification:

Angular magnification = 25/f

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Therefore the angular magnification of this thin lens is 2.94

To know more about angular magnification refer:: brainly.com/question/28325488

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A 1-kg rock is suspended by a massless string from one end of a
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Answer:

The weight of measuring stick is 9.8 N

Explanation:

given information:

the mass of the rock, m_{r} = 1 kg

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