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2 gm of steam condenses when passed thro...

 2 gm of steam condenses when passed through 40 gm of water initially at `25”^(@)C` The condensation of steam raises the temperature of water to `54.3”^(@)C`.What is the latent heat of steam?

A

540 cal/g

B

536 cal/g

C

270 cal/g

D

480 cal/g

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