Question

Calculate the heat exchanged in the conversion of 20.0 g of steam at 104 ºc to ice at –10.5 ºc.

Answer 1

To calculate the heat exchanged in the conversion of steam to ice, we need to consider several steps: cooling the steam, condensing it to water, and cooling the water to ice.

Step-by-step explanation:

To calculate the heat exchanged in the conversion of steam to ice, we need to consider several steps:

1. First, we need to calculate the heat required to cool the steam from 104 ºC to the boiling point of water (100 ºC). For this, we will use the equation Q = mcΔT, where Q is the heat, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
2. Next, we need to calculate the heat required to condense the steam to water at 100 ºC. To do this, we use the equation Q = mL, where Q is the heat, m is the mass, and L is the latent heat of vaporization.
3. Finally, we need to calculate the heat required to cool the water from 100 ºC to -10.5 ºC. We can use the equation Q = mcΔT once again.

By summing up the heat values obtained from each step, we can calculate the total heat exchanged in the conversion of steam to ice.