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AP EAMCET201822 Apr 2018Morning ShiftPhysicsThermal Properties of MatterActual

Steam at 100^ C is passed into 1 ~kg of water contained in a calorimeter at 9^ C till the temperature of water and calorimeter is increased to 90^ C . The mass of the steam condensed is nearly (water equivalent of calorimeter =0.1 ~kg , specific heat of water =1 calg ⁻¹ ^ C ⁻¹ and latent heat of vaporisation =540 calg ⁻¹ )

Options

  1. A81 ~g
  2. B162 ~g
  3. C243 ~g
  4. D486 ~g

Correct answer

B. 162 ~g

Step-by-step solution

Let mass of the steam condensed is x . Heat released = Heat gained by water aligned & x 540+x 1 (100-90) & =1 1 (90-9)+0.1 1 (90-9) & 540 x+10 x=81+81 & x= 891 550 =0 162 ~kg , x=162 ~g aligned

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