Need help with physical changes
1 answer:
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Answer:
Explanation:
The formula we must use is given to us:
q is the energy, m is the mass, and L(vapor) is the latent heat of vaporization.
The energy is what we calculate and the mass is 2 kilograms. We need to find the latent heat of vaporization, which is on the table.
- We know the sample is copper.
- Find that element on the table, then the third box tells us it's latent heat of vaporization is 4730 kJ/kg
Now we know:
Substitute the values into the formula.
Multiply. Note that the kilograms (kg) will cancel each other out.
<u>9460 kilojoules</u> are required to vaporize 2 kilograms of copper.
