the quantiti of heat released 10 gr of steam at 100 degrees Celcius[ latent heat of steam =540 cal g -1 ].
Huh, you already said it
10 grams * 540 calories/gram
are released by the steam as it condenses into water at the boiling point of 100 C
10 grams * 540 calories/gram
are released by the steam as it condenses into water at the boiling point of 100 C