The pressure in a constant-volume gas thermometer is 0.700 atm at 1.00 3 102°c and 0.512 atm at 0°c.

(a) what is the temperature when the pressure is 0.040 0 atm?
(b) what is the pressure at 450°c?

To solve this problem we will apply the continuity and pressure and temperature ratio equations defined as

This relationship warns us that there is a proportionality between the pressure and the temperature of state one, compared to the same variables in state two.

Our values are given as,

PART A ) Rearranging to find the Temperature we have,

Therefore the temperature when the pressure is 0.04atm would be

PART B) Using the same relation but now we will find the pressure:

Therefore the pressure at 450°C is 1.35atm

-first use of geothermal energy occurred more than 10,000 years ago in north america by american paleo-indians

-the first industrial use of geothermal energy began near pisa, italy in late 18th century

-in 1904, italian scientist piero ginori conti invented the first geothermal electric power plant in which steam was used to generate the power

-with the above experiment, the first geothermal plant in usa started in 1922 with a capacity of 250 kilowatts

-however, in 1946 first ground-source geothermal heat pump installed at commonwealth building in portland, oregon

-during the 1960’s, pacific gas and electric began operation of first large scale geothermal power plant in san francisco, producing 11 megawatts

-in 1973, when oil crisis began many countries began looking for renewable energy sources and by 1980’s geothermal heat pumps (ghp) started gaining popularity in order to reduce heating and cooling costs

-as effect of climate change started showing results, governments of various countries joined hands to fight against it, for which kyoto protocol was signed in japan in 1997, laid out emission targets for rich countries and required that they transfer funds and technology to developing countries, 184 countries have ratified it

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