In an experiment, 10.6 grams of steam is produced and then cooled. If the heat of vaporization is 2,257 joules/gram, how much energy is released after all the vapor turns to liquid?

Type the correct answer in the box. Express the answer to the correct number of significant figures.

The amount of energy released from the water is ______ joules.



Answer :

Alright, let's solve this step-by-step.

1. Understand the Question:
We need to determine how much energy is released when 10.6 grams of steam condenses into water. The heat of vaporization of water is given as 2,257 joules/gram.

2. Given Values:
- Mass of steam, [tex]\( m \)[/tex] = 10.6 grams
- Heat of vaporization, [tex]\( L_v \)[/tex] = 2,257 joules/gram

3. Formula to Use:
The amount of energy [tex]\( Q \)[/tex] released when steam condenses is given by the formula:
[tex]\[ Q = m \times L_v \][/tex]
where:
- [tex]\( Q \)[/tex] = Energy released (in joules)
- [tex]\( m \)[/tex] = Mass of the steam (in grams)
- [tex]\( L_v \)[/tex] = Heat of vaporization (in joules/gram)

4. Calculation:
Substitute the given values into the formula:
[tex]\[ Q = 10.6 \text{ grams} \times 2,257 \text{ joules/gram} \][/tex]

5. Perform the Multiplication:
[tex]\[ Q = 10.6 \times 2,257 \][/tex]
After multiplying, we obtain:
[tex]\[ Q = 23,924.2 \text{ joules} \][/tex]

6. Significant Figures:
Both the mass (10.6 grams) and the heat of vaporization (2,257 joules/gram) are given to three significant figures. Thus, the final answer should also be expressed to three significant figures.

The amount of energy released from the water is [tex]\( \boxed{23924.2} \)[/tex] joules.