Sketch the graph given in figure below in(p, T) and (p, V) coordinates. Aluminum

Question

Sketch the graph given in figure below in(p, T) and (p, V) coordinates. Aluminum has a specific heat capacity more than twice that of copper Place equal masses of aluminum and copper wire in a flame and the one to undergo the fastest increase in temperature will be copper. aluminum. both the same. A temperature difference of 10 degrees Celsius is also equal to a temperature difference of 10 on the Fahrenheit scale Kelvin scale both of these. neither of these. A 25-L tank contains 0.280 kg of helium at 24.0 degree C. The atomic mass of heium is 4.00 g/mol. (a) How many motes of helium are in the tank? What is the pressure in the tank?

Explanation / Answer

6. Give alluminium has heat capacity , twice that of copper

   so the temperature increase is fastest in alluminium than copper , option (b)

7. the temperature difference of 10 degrees celcius is also equal to temperature difference of 10 on the both Fahrenheit scale and Kelvin scale.

   because it is difference of temperature though it may be different scale of temperature , the quantity of heatness is same in both scales

8.

   volume of tank V = 25 L, mass of helium is 0.28 gm, temperature is T = 24 0C = 273.15+24 = 297.15 k

   atomic mass of helium is 4 g/mol

   we know that umber of moles = mass/ molar mass = 0.28/4 = 0.7

   0.7 moles of helium in the tank.

   from ideal gas equatio PV= nRT

           P = nRT/V = 0.7*8.314*297.15/25 = 69.17 Pa

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