How much energy is released when 16.5 g of steam is condensed at 100oC?

Hv = 2260 J / g.

Question 4 options:

-37290 J

-3729 J

-136 J

-13 KJ

Answer is A that is - 37290.

Here the steam is condensed at 100⁰ C, and mass of steam, m is given as 16.5 g.

We have provided with the value of heat of vaporization that is given as

Hv = 2260 J g⁻¹.

This process is an exothermic reaction.

Value of energy can be calculated using the equation:

[tex]q = m/times Hv[/tex]

by putting the value of Hv and m and in the equation, we will get q, the energy released.

[tex]q = 16.5/times 2260[/tex]

q = 37290 J

and as it is exothermic reaction so the value of energy release will be - 37290 J.

The answer would be A